CN102104473A - Method and system for conversation between simplex terminal and duplex terminal - Google Patents
Method and system for conversation between simplex terminal and duplex terminal Download PDFInfo
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- CN102104473A CN102104473A CN2011100056056A CN201110005605A CN102104473A CN 102104473 A CN102104473 A CN 102104473A CN 2011100056056 A CN2011100056056 A CN 2011100056056A CN 201110005605 A CN201110005605 A CN 201110005605A CN 102104473 A CN102104473 A CN 102104473A
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Abstract
The invention discloses a method and system for a conversation between a simplex terminal and a duplex terminal. The method comprises the steps: S1, receiving a calling signal and establishing a conversation connection according to the calling signal; S2, receiving a voice signal and performing digital analysis process on the voice signal to judge whether the voice signal is a human voice signal or not, and if so, executing the step S3; and S3, generating an effective human voice indicator signal, and setting a simplex transceiving unit to be in a transmitting state according to the effective human voice indicator signal, and transmitting the voice signal to the simplex terminal. The invention has the advantages of high human voice identification accuracy, no voice loss, stability and reliability; the interferences of non-human voice signals are fully removed; and the aim for smooth conversations between mobile phones or wired landline telephones and interphones is realized.
Description
Technical field
The present invention relates to wireless cluster communication field and voice detection techniques, relate in particular to the method and system of a kind of single worker's terminal and duplex terminals conversation.
Background technology
Current, global system for mobile communications (GSM, Global System For MobileCommunication), public telephone network (PSTN, Public Switched Telephone Network) etc. public communication network is popularized, specialty cordless communication network (group system, conventional system) also covered each cities and towns main region of the whole nation, in order to promote to public safety, the quick response of major events such as social security and remote command dispatching are badly in need of a kind of advanced person's of research and development, stable, reliably, the application technology scheme that interconnects of simple and practical public network and private network.
In the prior art wire and wireless connector is connected with an intercom, and connector inserted telephone wire, the intercom that links to each other with connector can be used as Telephone set and uses, and " remaining intercom " can make a phone call and receive calls, and becomes transportable cell-phone.The major function of the intercom that links to each other with connector is the transfer phone, throws into, transfers to and inner intercommunication; The major function of " remaining intercom " is inner intercommunication, and dialing is got and freely received calls.This connector mainly comprises ring detecting unit, analog voice control transmission (VOX, Voice-Operated Transmission) detecting unit, dual-tone multifrequency (DTMF, Dual Tone Multiple Frequency) codec unit, microcontroller (MCU, MicroControl Unit) and noise elimination/PTT (PPT, point-to-talk) control unit, this connector links to each other with outside line by telephony interface.Wherein simulate the VOX detecting unit and be used to realize single worker's pattern of " the base intercom " that be connected with connector and the conversion between the quasi-duplex pattern.If " remaining intercom " do not possess the dtmf dialing function, can also select DTMF signaling box for use, only need during use the microphone transmitter that its back side sound hole is aimed at intercom is got final product.
Because realizing the core of the call function of outside line and mobile intercom in the prior art is dynamically to control the emission closed condition of " base intercom " according to " simulation VOX detecting unit " output speech index signal, so the performance of " simulation VOX detecting unit " directly influences communication effect.Because the principle of " VOX detecting unit " is with behind the audio signal noise reduction, detects its intensity of sound index, greater than default thresholding, just export useful signal, otherwise the output invalid signals, therefore, if at non-voice (environmental noise, grating, chatter, the animal cry, wheeze, running sound) under the environment, the indication of this " simulation VOX detecting unit " as easy as rolling off a log generation mistake, cause the conversation effort, even can't converse.
Summary of the invention
The technical problem to be solved in the present invention is, at can't converse or converse between single worker's terminal of prior art and duplex terminals effort and the serious defective of loss of voice, the method and system that provide a kind of accuracy rate height, no loss of voice and reliable and stable single worker's terminal and duplex terminals to converse.
The technical solution adopted for the present invention to solve the technical problems is:
The system of a kind of single worker's terminal and duplex terminals conversation is provided, comprises:
The public network access unit is used for sending call signal and/or voice signal from the duplex terminals reception and/or to described duplex terminals;
The voice detecting unit is used for carrying out digital assay processing and output voice index signal from described public network access unit received speech signal and to described voice signal, also is used to transmit described voice signal;
Single worker's Transmit-Receive Unit, be used for according to the described voice index signal of described voice detecting unit output switch between accepting state and emission state so that and carry out the reception and the emission of call signal and/or voice signal between single worker's terminal;
Microprocessor, the described call signal that is used to handle described public network access unit and described single worker's Transmit-Receive Unit reception also is used for controlling according to the described voice index signal of described voice detecting unit output the reception and the emission state of described single worker's Transmit-Receive Unit so that setting up conversation is connected.
In the system of a kind of single worker's terminal of the present invention and duplex terminals conversation, described voice detecting unit also is used for the described voice signal of buffer memory.
In the system of a kind of single worker's terminal of the present invention and duplex terminals conversation, described public network access unit comprises public telephone net unit or global system for mobile communications unit, wherein:
The public telephone net unit is used for sending described call signal and/or voice signal by public telephone network switch or public telephone network from described duplex terminals reception and/or to described duplex terminals;
The global system for mobile communications unit is used for sending described call signal and/or voice signal by the global mobile communication network from described duplex terminals reception and/or to described duplex terminals.
In the system of a kind of single worker's terminal of the present invention and duplex terminals conversation, described public network access unit comprises public telephone net unit and global system for mobile communications unit, wherein, the public telephone net unit is used for sending described call signal and/or voice signal by public telephone network switch or public telephone network from described duplex terminals reception and/or to described duplex terminals, and the global system for mobile communications unit is used for sending described call signal and/or voice signal by the global mobile communication network from described duplex terminals reception and/or to described duplex terminals;
The system of described single worker's terminal and duplex terminals conversation also comprises the audio exchange unit, is used for carrying out the switching of voice-grade channel so that transmit described voice signal between described single worker's Transmit-Receive Unit and described public telephone net unit and described global system for mobile communications unit.
The present invention also provides the method for a kind of duplex terminals dialing with single worker's terminal call, may further comprise the steps:
S1, from the duplex terminals receiving calling signal, and set up conversation according to described call signal and connect;
S2, from described duplex terminals received speech signal, described voice signal is carried out digital assay handles, and judge whether described voice signal is people's acoustical signal, if, execution in step S3;
S3, the effective voice index signal of generation are made as emission state according to described effective voice index signal with single worker's Transmit-Receive Unit, and launch described voice signal to described single worker's terminal.
In the method for a kind of duplex terminals dialing of the present invention and single worker's terminal call, if the voice signal that receives from described duplex terminals is inhuman acoustical signal, described method also comprises:
Generate invalid voice index signal, and described single worker's Transmit-Receive Unit is made as accepting state according to described invalid voice index signal.
In the method for a kind of duplex terminals dialing of the present invention and single worker's terminal call, described step S2 also comprises the described voice signal of buffer memory.
The present invention also provides the method for a kind of single worker's terminal dialing and duplex terminals conversation, may further comprise the steps:
S4, from single worker's terminal receiving calling signal, and set up conversation according to described call signal and connect;
S5, from described duplex terminals received speech signal, described voice signal is carried out digital assay handles, and judge whether described voice signal is people's acoustical signal, if, execution in step S3;
S6, the effective voice index signal of generation are made as emission state according to described effective voice index signal with single worker's Transmit-Receive Unit, and launch described voice signal to described single worker's terminal.
In the method for a kind of duplex terminals dialing of the present invention and single worker's terminal call, if the voice signal that receives from described duplex terminals is inhuman acoustical signal, described method also comprises:
Generate invalid voice index signal, and described single worker's Transmit-Receive Unit is made as accepting state according to described invalid voice index signal.
In the method for a kind of duplex terminals dialing of the present invention and single worker's terminal call, described step S5 also comprises the described voice signal of buffer memory.
The beneficial effect of the method and system of a kind of single worker's terminal of the present invention and duplex terminals conversation is: in the system's conversation that the voice detection techniques is applied to duplex terminals and single worker's terminal, voice recognition accuracy height, no speech is lost, fully got rid of the interference of non-voice voice signal, reliable and stable, realized the smooth purpose of conversing between mobile phone or telephone base and the intercom.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples, in the accompanying drawing:
Fig. 1 is the structural representation of prior art wire and wireless connector;
Fig. 2 is the structural representation of the system of single according to an embodiment of the invention worker's terminal and duplex terminals conversation;
Fig. 3 is the structural representation of the system of single in accordance with another embodiment of the present invention worker's terminal and duplex terminals conversation;
Fig. 4 is the structural representation of voice detecting unit according to an embodiment of the invention;
Fig. 5 is the flow chart of the method for duplex terminals dialing according to an embodiment of the invention and single worker's terminal call;
Fig. 6 is the flow chart of the method for single according to an embodiment of the invention worker's terminal dialing and duplex terminals conversation;
Fig. 7 is the flow chart of the method for single in accordance with another embodiment of the present invention worker's terminal and duplex terminals conversation;
Fig. 8 is the schematic diagram of emergency communication portable mobile wireless dispatching and command system according to an embodiment of the invention.
Embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
Fig. 2 is the structural representation of the system of single according to an embodiment of the invention worker's terminal and duplex terminals conversation.In the present embodiment, the system of single worker's terminal and duplex terminals conversation comprises public network access unit 110, voice detecting unit 120, single worker's Transmit-Receive Unit 130 and microprocessor (MCU, Micro ControlUnit) 140.
Public network access unit 110 is used for sending call signal and/or voice signal from the duplex terminals reception and/or to duplex terminals.Duplex terminals can comprise duplex communication equipment such as base, mobile phone.
Single worker's Transmit-Receive Unit 130, be used between accepting state and emission state, switching from MCU 140 reception control signals and according to this control signal, thereby send call signal and/or voice signal from single worker's terminal reception and/or to single worker's terminal, wherein, this control signal is the voice index signal generation of MCU 140 according to 120 outputs of voice detecting unit.Single worker's Transmit-Receive Unit 130 can comprise simplex equipment such as intercom, ride.Single worker's Transmit-Receive Unit 130 remains on accepting state so that receiving calling signal at any time what do not have a control signal as the time spent.
MCU 140, are used for carrying out respective handling so that be connected setting up conversation between single worker's terminal and duplex terminals from public network access unit 110 or single worker's Transmit-Receive Unit 130 receiving calling signals and to call signal.MCU140 also is used for receiving effective or invalid voice index signal from voice detecting unit 120, and generates control signal so that control is made as reception or emission state with single worker's Transmit-Receive Unit 130 according to the voice index signal.
The present invention is by being applied to the voice detecting unit in the phone system of single worker's terminal and duplex terminals, can judge more accurately whether the voice signal that receives from public network is people's acoustical signal, and then control the reception and the emission state of single worker's Transmit-Receive Unit, realized the function of the smooth conversation of duplex terminals and single worker's terminal.Because the voice detecting unit is in the pinpoint accuracy of distinguishing aspect the voice, the present invention has effectively avoided the false triggering of the non-voice voice signal of duplex terminals side, has improved the accuracy of system.In addition, caching function can also be incorporated in the voice detecting unit,, effectively solve the problem that word lost in speech, guarantee the integrality of speech to avoid losing before the index signal less than the useful speech of that section of voice signal strength threshold.
Fig. 3 is the structural representation of the system of single in accordance with another embodiment of the present invention worker's terminal and duplex terminals conversation.In the present embodiment, the system of single worker's terminal and duplex terminals conversation comprises public network access unit 110, voice detecting unit 203, MCU 205 and single worker's Transmit-Receive Unit 207.Wherein, public network access unit 110 can comprise at least one item in PSTN unit 201 and the GSM unit 202 again.When public network access unit 110 comprised PSTN unit 201, the system of single worker's terminal and duplex terminals conversation also comprised DTMF codec unit 204.When public network access unit 110 comprised PSTN unit 201 and GSM unit 202 at least, the system of single worker's terminal and duplex terminals conversation also comprised audio exchange unit 206.Although only show these two kinds of public networks of PSTN and GSM among Fig. 3, this is just in order to explain, and is not used in restriction, and the present invention can comprise the public network access unit that is applicable to any type public network.In an embodiment of the present invention, PSTN unit 201 utilizes telephone wire to pass through the PSTN switch or the PSTN network links to each other with long-range PSTN terminal such as base, GSM unit 202 links to each other with long-range GSM terminal such as mobile phone wireless by the GSM network, single worker's Transmit-Receive Unit 207 by professional cordless communication network (for example, group system or conventional system) with long-range single worker's terminal such as intercom or ride etc. are wireless links to each other.
Voice detecting unit 203 is used for the voice signal of PSTN unit or the reception of GSM unit is carried out digital assay with output voice index signal, can also be used for these voice signal buffer memory time-delay output.For example, voice detecting unit 203 can be used for the voice signal that receives is carried out digital assay and this voice signal of buffer memory, and generates when identifying people's acoustical signal that effective voice index signal sends to MCU 205 so that the reiving/transmitting state of single worker's Transmit-Receive Unit 207 is switched in control.Again for example, voice detecting unit 203 can be used for the voice signal that receives is carried out digital assay and this voice signal of buffer memory, and generates when identification is less than people's acoustical signal that invalid voice index signal sends to MCU 205 so that the reiving/transmitting state of single worker's Transmit-Receive Unit 207 is switched in control.Voice detecting unit 203 can comprise software, hardware and/or its combination that can realize the voice recognition function arbitrarily, is used for the interference (as mechanical shock, environmental noise, grating, chatter, animal cry, wheeze etc.) of the inhuman acoustical signal of abundant filtering and does not lose speech.
Single worker's Transmit-Receive Unit 207, be used for and long-range single worker's terminal between carry out the reception and the emission of call signal and/or carrier signal, long-range single worker's terminal can comprise intercom, ride etc.For example, single worker's Transmit-Receive Unit 207 can be a local intercom, is used for being set to emission state so that launch voice signal or be set to accepting state so that from long-range single worker's terminal reception carrier signal to long-range single worker's terminal according to the control command of MCU 205.Again for example, single worker's Transmit-Receive Unit 207 can be a local ride, is used for being set to emission state so that launch voice signal or be set to accepting state so that from long-range single worker's terminal reception carrier signal to long-range single worker's terminal according to the control command of MCU205.Single worker's Transmit-Receive Unit 207 remains on accepting state so that receiving calling signal at any time what do not have a control signal as the time spent.
MCU 205, are used to monitor that above-mentioned each module is to send control command.For example, MCU 205 can be used to send control command control DTMF codec unit and carries out the coding or the decoding of dtmf signal.Again for example, MCU 205 can be used to send control command indicative audio crosspoint 206 in long-range PSTN terminal/long-range GSM terminal and 207 switchings of carrying out audio frequency of single worker's Transmit-Receive Unit.Again for example, MCU 205 can be used for bell signal, the incoming signal that PSTN unit 201 is received and will handle by the exhalation signal that PSTN unit 201 sends.Again for example, MCU 205 can also be used for the incoming signal that GSM unit 202 is received and will handle by the exhalation signal that GSM unit 202 sends.Again for example, MCU 205 can also be used for being set to emission state from the voice detecting unit 203 effective voice index signals of reception and with single worker's Transmit-Receive Unit 207 or receiving invalid voice index signal and single worker's Transmit-Receive Unit 207 is set to accepting state.
In another embodiment of the present invention, the system of single worker's terminal and duplex terminals conversation also comprises PTT control unit 208.PTT control unit 208 can be used to control single worker's Transmit-Receive Unit 207 and switch between emission state and accepting state.For example, PTT control unit 208 can receive that control commands control that single worker's Transmit-Receive Unit 207 remains on emission state or accepting state so that receive or send voice signal to long-range single worker's terminal from long-range single worker's terminal from MCU 205.
In another embodiment of the present invention, the system of single worker's terminal and duplex terminals conversation can also comprise squelch detection unit 209.Squelch detection unit 209 can be used to detect the voice signal whether single worker's Transmit-Receive Unit 207 receives long-range single worker's terminal.For example, squelch detection unit 209 can be used to receive the misoperation of noise elimination triggering signal to avoid external audio signal to cause of single worker's Transmit-Receive Unit 207, and the noise elimination triggering signal is the level that single worker's Transmit-Receive Unit 207 is exported when being in accepting state and receiving the radiofrequency signal that long-range single worker's terminal sends under current frequency.Like this can bonding worker Transmit-Receive Unit 207 and long-range single worker's terminal in one be that another is an accepting state to emission state simultaneously.
In the course of work of long-range duplex terminals incoming call, 201/GSM unit, PSTN unit 202 is from long-range duplex terminals receiving calling signal, and MCU 205 detects this call signal and carries out and answer.MCU 205 sends control command will exchange to single worker's Transmit-Receive Unit 207 (ride or intercom) by audio exchange unit 206 through the GSM or the PSTN voice signal of voice detecting unit 203.If long-range duplex terminals (GSM mobile handset/PSTN base) user speaks at this moment, these voice will be detected and buffer memory by voice detecting unit 203, send effective voice index signal and give MCU 205, after MCU 205 detects effective voice index signal, generate the control control signal at once single worker's Transmit-Receive Unit 207 is set to emission state, make from the voice signal of long-range duplex terminals (GSM mobile handset/PSTN base) and go out by wireless signal transmission, long distance wireless list worker terminal (intercom) will be received this speech.
In another embodiment of the present invention, MCU 205 sends the emission state of the single worker's Transmit-Receive Unit 207 of control command order PTT control unit 208 maintenances so that voice signal is transmitted to long-range single worker's terminal by single worker's Transmit-Receive Unit 207 after receiving this effective voice index signal.
When long-range duplex terminals (GSM mobile handset/PSTN base) when the user rings off, 203 detectings of voice detecting unit are less than people's acoustical signal, send invalid voice index signal, MCU 205 receives invalid voice index signal and single worker's Transmit-Receive Unit 207 is set to accepting state, long-range single worker's terminal (intercom) is pressed PTT and is called out, after MCU 205 detects the carrier signal of single worker's Transmit-Receive Unit 207 receptions, control audio crosspoint 206 switch audio passages are given duplex terminals (GSM mobile handset/PSTN base), and duplex terminals (GSM mobile handset/PSTN base) has realized smooth and easy conversation with intercom like this.
In another embodiment of the present invention, can also send detection information to MCU 205 after the carrier signal by the single worker's Transmit-Receive Unit 207 of squelch detection unit 209 detections.
In the course of work of long-range single worker's terminal incoming call, single worker's Transmit-Receive Unit 207 is from long-range single worker's terminal demodulate reception call signal, and DTMF codec unit 204 parses call number and judges that by MCU 205 this call number is to call out the PSTN terminal or call out the GSM terminal from this call signal.If call out the PSTN terminal, MCU 205 sends control command order DTMF codec unit 204 and generates the dtmf dialing signal according to this call number, calls out the PSTN terminal so that connect through PSTN unit 201; If call out the GSM terminal, MCU 205 sends serial ports and instructs to 202 order GSM unit, GSM unit, 202 calling GSM terminals so that connect.If the user of long-range duplex terminals (GSM mobile handset/PSTN base) is speech not, 203 detectings of voice detecting unit are less than people's acoustical signal, then send invalid voice index signal, MCU 205 receives invalid voice index signal and single worker's Transmit-Receive Unit 207 is set to accepting state, long-range single worker's terminal (intercom) is pressed PTT and is called out, after MCU 205 detects the carrier signal of single worker's Transmit-Receive Unit 207 receptions, control audio crosspoint 206 switch audio passages are given duplex terminals (GSM mobile handset/PSTN base), by GSM unit 202 or PSTN unit 201 this voice signal are transmitted to corresponding GSM terminal or PSTN terminal.
In another embodiment of the present invention, can also send detection information to MCU 205 after the carrier signal by the single worker's Transmit-Receive Unit 207 of squelch detection unit 209 detections.
If long-range duplex terminals (GSM mobile handset/PSTN base) user loquiturs, these voice will be detected and buffer memory by voice detecting unit 203, send effective voice index signal and give MCU 205, after MCU 205 detects effective voice index signal, control at once is set to emission state with single worker's Transmit-Receive Unit 207, and send control command and will exchange to single worker's Transmit-Receive Unit 207 (ride or intercom) by audio exchange unit 206 through the GSM or the PSTN voice signal of voice detecting unit 203, the voice signal of long-range duplex terminals (GSM mobile handset/PSTN base) is gone out by wireless signal transmission, and long distance wireless list worker terminal (intercom) will be received this speech.
In another embodiment of the present invention, MCU 205 sends the emission state of the single worker's Transmit-Receive Unit 207 of control command order PTT control unit 208 maintenances so that voice signal is transmitted to long-range single worker's terminal by single worker's Transmit-Receive Unit 207 after receiving this effective voice index signal.Duplex terminals (GSM mobile handset/PSTN base) has realized smooth and easy conversation with intercom like this.
Fig. 4 is the structural representation of voice detecting unit according to an embodiment of the invention.In the present embodiment, the voice detecting unit comprises speech input interface 310, AD conversion unit 320, digital signal processing unit 330, D/A conversion unit 340, voice/control signal output interface 350, memory cell 360 and power supply 370.
Digital signal processing unit 330 is used for that audio digital signals is carried out time and frequency domain analysis and handles and these audio digital signals of buffer memory.For example, digital signal processing unit 330 can be used to carry out the audio digital signals that automatic gain was controlled, set up noise model, comparison signal energy threshold, comparison noise model and exports effective/invalid voice index signal and buffer memory.Digital signal processing unit 330 can be a dsp processor.
D/A conversion unit 340 is used for the audio digital signals behind the digital signal processing unit 330 time-delay buffer memorys is converted to analog voice signal with output.
Voice/control signal output interface 350 are used for providing to external hardware the output of analog voice signal and effective/invalid voice index signal.For example, voice/control signal output interface 350 can be used for providing effectively/invalid voice index signal to MCU203.Again for example, voice/control signal output interface 350 can be used for providing voice signal by audio exchange unit 206 to single worker's Transmit-Receive Unit 207.
In some embodiments of the invention, digital signal processing unit 330 further comprises buffer unit 331, digital filtering unit 332, signal energy comparing unit 333, noise model comparing unit 334 and index signal generation unit 335.
Signal energy comparing unit 333 is used to judge that whether the energy of input speech signal is greater than setting thresholding.Signal energy comparing unit 333 can be a power comparator, and it is preset with an energy threshold value, can be used for will input voice signal with this predetermined threshold value compares and export comparative results to index signal generation unit 335.This predetermined threshold value can be by factory settings, and can comprise any desired value, as long as the intensity of guaranteeing everyone acoustical signal is greater than this value.
Noise model comparing unit 334 is used for input speech signal is compared with each noise signal model in time domain and frequency domain.For example, can be preset with various noise signal models in the noise model comparing unit 334, whether noise model comparing unit 334 can be people's acoustical signal with the contrast that the various noise signal models of presetting carry out time domain and frequency domain with the voice signal of judging this input with the voice signal of input, and to index signal generation unit 335 output comparative results.
Index signal generation unit 335 is used for sending MCU 205 to according to the filtering result of digital filtering unit 332 and the comparative result generation index signal of signal energy comparing unit 333 and noise model comparing unit 334.For example, index signal generation unit 335 can be used for not generating effective voice index signal when the comparative result of signal energy comparing unit 333 all matches for this input speech signal and various noise model greater than the comparative result of threshold value and noise model comparing unit 334 for the intensity of this input speech signal, to show this input speech signal behaviour acoustical signal.Again for example, index signal generation unit 335 generates invalid voice index signal in the time of can being used for not having in digital filtering unit 332 signal output, is inhuman acoustical signal to show this input speech signal.Again for example, index signal generation unit 335 can be used for generating invalid voice index signal during less than threshold value for the intensity of this input speech signal at the comparative result of signal energy comparing unit 333.Again for example, index signal generation unit 335 can also be used for generating invalid voice index signal during for one or more Model Matching of this input speech signal and various noise models at the comparative result of noise model comparing unit 334.
In the course of the work, speech input interface 310 can be from 201/GSM unit, PSTN unit 202 receives analog voice signals.AD conversion unit 320 can be converted to audio digital signals with analog voice signal and handle so that send digital signal processing unit 330 to.
Buffer unit 331 in the digital signal processing unit 330 can the buffer memory audio digital signals to avoid losing before the index signal less than the useful speech of that section of voice signal strength threshold, can also avoid losing the voice signal in the control time of implementation section (detect speech index signal, switch audio passage and open emission) of MCU205.Digital filtering unit 332 can the out-of-band signal of filtering voice signal.For example, digital filtering unit 332 can be used for the out-of-band inhuman acoustic frequency signal of filtering 300Hz-3.4kHz and send the filtering result to index signal generation unit 335 so that tentatively reduce the interference of inhuman acoustical signal.Again for example, digital filtering unit 332 can also be used for the outer voice signal of filtering one pre-set frequency band, as long as this pre-set frequency band comprises all possible people's acoustical signal.Then, signal energy comparing unit 333 can compare the intensity of the voice signal of input and energy threshold value default in it and export comparative results to index signal generation unit 335.Next, whether noise model comparing unit 334 can be people's acoustical signal with the contrast that the various noise signal models of presetting carry out time domain and frequency domain with the voice signal of judging this input with the voice signal of input, and to index signal generation unit 335 output comparative results.At last, index signal generation unit 335 can send MCU 205 to according to the filtering result of digital filtering unit 332 and the comparative result generation index signal of signal energy comparing unit 333 and noise model comparing unit 334.For example, index signal generation unit 335 can be used for not generating effective voice index signal when the comparative result of signal energy comparing unit 333 all matches for this input speech signal and various noise model greater than the comparative result of threshold value and noise model comparing unit 334 for the intensity of this input speech signal, to show this input speech signal behaviour acoustical signal.Again for example, index signal generation unit 335 generates invalid voice index signal in the time of can being used for not having in digital filtering unit 332 signal output, is inhuman acoustical signal to show this input speech signal.Again for example, index signal generation unit 335 can be used for generating invalid voice index signal during less than threshold value for the intensity of this input speech signal at the comparative result of signal energy comparing unit 333.Again for example, index signal generation unit 335 can also be used for generating invalid voice index signal during for one or more Model Matching of this input speech signal and various noise models at the comparative result of noise model comparing unit 334
After generating index signal, D/A conversion unit 340 can be converted to analog voice signal with the audio digital signals behind the digital signal processing unit 330 time-delay buffer memorys.Export effective/invalid voice index signal and export analog voice signals to MCU 205 by voice/control signal output interface 350 then to single worker's Transmit-Receive Unit 207.
Fig. 5 is the flow chart of the method for duplex terminals dialing according to an embodiment of the invention and single worker's terminal call.In the present embodiment, the duplex terminals dialing starts from step S1 with the method for single worker's terminal call.In step S1, from the duplex terminals receiving calling signal and set up duplex terminals according to this call signal and be connected with the conversation of corresponding single worker's terminal room.
In step S2, receiving also, buffer memory carries out the digital assay processing to judge whether this voice signal is people's acoustical signal from the voice signal of duplex terminals and to this voice signal, if these voice signal right and wrong people acoustical signal then generates and sends invalid voice index signal and with control single worker's Transmit-Receive Unit is made as accepting state so that the single worker's terminal received speech signal from being called out, if this voice signal is people's acoustical signal, this method will continue at step S3.
In step S3, generate and send effective voice index signal and single worker's Transmit-Receive Unit is made as emission state, and launch this voice signal to single worker's terminal of being called out with control.
In an embodiment of the present invention, repeated execution of steps S2 is connected until disconnecting conversation with S3.
In the method for duplex terminals provided by the invention dialing and single worker's terminal call by utilizing the voice detection techniques to judge whether the voice signal that receives from duplex terminals is people's acoustical signal, and then control from single worker's terminal reception or to single worker's terminal emission voice signal, thereby the smoothness that realizes single worker's terminal and duplex terminals is conversed.Because the voice detecting unit is in the high precision of distinguishing aspect the voice, the present invention has effectively avoided the false triggering of noise signal, has reliable and stable characteristics.
Fig. 6 is the flow chart of the method for single according to an embodiment of the invention worker's terminal dialing and duplex terminals conversation.In the present embodiment, the method for single worker's terminal dialing and duplex terminals conversation starts from step S4.In step S4, from single worker's terminal receiving calling signal and set up single worker's terminal according to this call signal and be connected with conversation between corresponding duplex terminals.
In step S5, receiving also, buffer memory carries out the digital assay processing to judge whether this voice signal is people's acoustical signal from the voice signal of duplex terminals and to this voice signal, if these voice signal right and wrong people acoustical signal then generates and sends invalid voice index signal and with control single worker's Transmit-Receive Unit is made as accepting state so that from sending single worker's terminal received speech signal of calling, if this voice signal is people's acoustical signal, this method will continue at step S3.
In step S6, generate and send effective voice index signal and single worker's Transmit-Receive Unit is made as emission state, and launch this voice signal to single worker's terminal of sending calling with control.
In an embodiment of the present invention, repeated execution of steps S5 is connected until disconnecting conversation with S6.
In the method for single worker's terminal dialing provided by the invention and duplex terminals conversation by utilizing the voice detection techniques to judge whether the voice signal that receives from duplex terminals is people's acoustical signal, and then control from single worker's terminal reception or to single worker's terminal emission voice signal, thereby the smoothness that realizes single worker's terminal and duplex terminals is conversed.Because the voice detecting unit is in the high precision of distinguishing aspect the voice, the present invention has effectively avoided the false triggering of noise signal, has reliable and stable characteristics.
Fig. 7 is the flow chart of the method for single in accordance with another embodiment of the present invention worker's terminal and duplex terminals conversation.In the present embodiment, the method for single worker's terminal and duplex terminals conversation starts from step 701.
In step 701, from the terminal receiving calling signal.Next continue step 702.In step 702, judge whether the call signal that receives is the incoming call of PSTN terminal, if not, execution in step 703, if, execution in step 704.In step 703, judge whether the call signal that receives is the incoming call of GSM terminal, if not, execution in step 705, if, execution in step 706.In step 705, judge whether the call signal that receives is the incoming call of single worker's terminal, if not, returns step 701, if execution in step 710.
In step 704, MCU detects described call signal and switches to the execution of PSTN voice-grade channel by audio exchange unit 206 and answers.Next continue step 707.
In step 706, MCU detects described call signal and switches to the execution of GSM voice-grade channel by audio exchange unit 206 and answers.Next continue step 707.
In step 707, from the PSTN unit or GSM unit received speech signal and this voice signal carried out analyzing and processing and buffer memory, if this voice signal behaviour acoustical signal then sends effective voice index signal and continues execution in step 708, if this voice signal is a then execution in step 709 of inhuman acoustical signal, the noise signal that inhuman acoustical signal herein receives when comprising unmanned speaking.In step 708, MCU receives effective voice index signal and single worker's Transmit-Receive Unit is made as emission state and launches the PSTN unit or the voice signal of GSM unit reception.In step 709, MCU receives invalid voice index signal and single worker's Transmit-Receive Unit is set to accepting state and from long-range single worker's terminal received speech signal.This method will be repeated on step 707 until on-hook.
In step 710, the DTMF codec unit parses call number from call signal.Next continue step 711.In step 711, judge whether to calling out the PSTN terminal, if not, execution in step 712, if, execution in step 713.In step 712, judge whether if not, to return step 701 into calling out the GSM terminal, if, execution in step 716.
In step 713, MCU switches to the PSTN voice-grade channel by the audio exchange unit.Next continue step 714.In step 714, MCU sends control command makes the DTMF codec unit generate the dtmf dialing signal according to this call number coding.Next continue step 715.In step 715, the PSTN terminal is called out so that connect in the PSTN unit.
In step 716, MCU switches to the GSM voice-grade channel by the audio exchange unit.Next continue step 717.In step 717, MCU sends serial ports and instructs to the GSM unit.Next continue step 718.In step 718, the GSM terminal is called out so that connect in the GSM unit.This method will be repeated on step 707 until on-hook.
Fig. 8 is the schematic diagram of emergency communication portable mobile wireless dispatching and command system according to an embodiment of the invention.In the present embodiment, apply the present invention in the wireless dispatching command system, realized the function that interconnects between on-the-spot individual soldier, operation center and the remote scheduling center.
In a scene, on-the-spot individual soldier includes but not limited to that on-the-spot individual soldier 811, on-the-spot individual soldier 812 and on-scene communication car 813 are by wireless base station (for example, wireless base station 821,822 etc.) and operation center 830 conversations.Can select normal mode, promptly on-the-spot individual soldier presses intercom PTT speech, and operation center 830 is pressed hand miaow PTT speech, and call method is identical with traditional private network-private network call method.
In another scene, remote cluster 861 is by wireless base station (for example, the wireless base station 823) and operation center 830 conversations.Can select cluster mode, remote cluster terminal 861 dialing individual calling/group callings/generally call operation center 830, set up the cluster conversation after, press the PTT speech, operation center 830 is pressed hand miaow PTT and is talked.Can also select the Three-Way Calling pattern, on-the-spot individual soldier (for example, on-the-spot individual soldier 811, on-the-spot individual soldier 812, on-scene communication car 813 etc.), remote cluster intercom 861 and the operation center 830 tripartite conference calls of forming, cluster intercom, on-the-spot individual soldier and operation center all need be talked by PTT.Call method is identical with traditional private network-private network call method.
In another scene, long-range base 862 is by PSTN communication system (for example, PSTN switch 841, PSTN network 842 and the PSTN switch 843 that connects successively) and operation center 830 conversations.Long-range base 862 can pass through PSTN dial-up operation center 830, connects back base end 862 normal speech, and operation center 830 is pressed hand miaow PTT speech.Can also select the Three-Way Calling pattern, on-the-spot individual soldier (for example, on-the-spot individual soldier 811, on-the-spot individual soldier 812, on-scene communication car 813 etc.), long-range base 862 and the operation center 830 tripartite conference calls of forming, base end 862 normally gets final product in a minute, on-the-spot individual soldier's (for example, on-the-spot individual soldier 811, on-the-spot individual soldier 812, on-scene communication car 813 etc.) and operation center 830 all need be talked by PTT.Call method is described in detail with reference to figure 2-7.
In another scene, remote handset 863 passes through, such as but not limited to GSM network and operation center 830 conversations.Remote handset 863 can pass through GSM dial-up operation center 830, connects back mobile phone end 863 normal speech, and operation center 830 is pressed hand miaow PTT speech.Can also select the Three-Way Calling pattern, on-the-spot individual soldier (for example, on-the-spot individual soldier 811, on-the-spot individual soldier 812, on-scene communication car 813 etc.), remote handset 863 and the operation center 830 tripartite conference calls of forming, mobile phone end 863 normally gets final product in a minute, on-the-spot individual soldier's (for example, on-the-spot individual soldier 811, on-the-spot individual soldier 812, on-scene communication car 813 etc.) and operation center 830 all need be talked by PTT.Call method is described in detail with reference to figure 2-7.
Native system is by using voice detection techniques, public communication network (PSTN/GSM) and specialized communication network (cluster/conventional system), (for example on-the-spot individual soldier, operation center and remote scheduling center have been realized, remote cluster scheduling, the scheduling of long-range base, remote handset scheduling etc.) between the function that interconnects, stable and reliable for performance, practical, expanded the remote scheduling command ability and the emergency event disposal ability of dispatching patcher greatly.
The present invention is by being applied to the voice detection techniques in the phone system and method for single worker's terminal and duplex terminals, can judge more accurately whether the voice signal that receives from public network is people's acoustical signal, and then the private network incoming end is (for example in the control phone system, single worker's Transmit-Receive Unit) reception and emission state have been realized the smooth function of conversing of pstn telephone, GSM mobile handset and intercom/ride.Because the voice detection techniques is in the pinpoint accuracy of distinguishing aspect the voice, the present invention has effectively avoided the false triggering of the non-voice voice signal of duplex terminals side.Simultaneously, caching function is incorporated in the voice detecting unit, it is preceding less than the useful speech of that section of voice signal strength threshold to have avoided losing index signal, and avoided the interior speech of control time of implementation section (detect voice index signal, switch audio passage and emission/accepting state is set) of MCU, efficiently solve speech and lose the problem of word, guaranteed the integrality of speech.Generally speaking, the phone system and the method for single worker's terminal provided by the invention and duplex terminals are reliable and stable, have very strong practical value.For example, the present invention can be applied to talkback system wireless communication field, private network and public network interconnect field, remote command scheduling field or other association areas.
Though the present invention describes by specific embodiment, it will be appreciated by those skilled in the art that, without departing from the present invention, can also carry out various conversion and be equal to alternative the present invention.In addition, at particular condition or material, can make various modifications to the present invention, and not depart from the scope of the present invention.Therefore, the present invention is not limited to disclosed specific embodiment, and should comprise the whole execution modes that fall in the claim scope of the present invention.
Claims (10)
1. the system of single worker's terminal and duplex terminals conversation is characterized in that, comprising:
The public network access unit is used for sending call signal and/or voice signal from the duplex terminals reception and/or to described duplex terminals;
The voice detecting unit is used for carrying out digital assay processing and output voice index signal from described public network access unit received speech signal and to described voice signal, also is used to transmit described voice signal;
Single worker's Transmit-Receive Unit, be used for according to the described voice index signal of described voice detecting unit output switch between accepting state and emission state so that and carry out the reception and the emission of call signal and/or voice signal between single worker's terminal;
Microprocessor, the described call signal that is used to handle described public network access unit and described single worker's Transmit-Receive Unit reception also is used for controlling according to the described voice index signal of described voice detecting unit output the reception and the emission state of described single worker's Transmit-Receive Unit so that setting up conversation is connected.
2. the system of single worker's terminal according to claim 1 and duplex terminals conversation is characterized in that described voice detecting unit also is used for the described voice signal of buffer memory.
3. the system of single worker's terminal according to claim 1 and 2 and duplex terminals conversation, it is characterized in that, described public network access unit comprises public telephone net unit or global system for mobile communications unit, and wherein: the public telephone net unit is used for sending described call signal and/or voice signal by public telephone network switch or public telephone network from described duplex terminals reception and/or to described duplex terminals;
The global system for mobile communications unit is used for sending described call signal and/or voice signal by the global mobile communication network from described duplex terminals reception and/or to described duplex terminals.
4. the system of single worker's terminal according to claim 1 and 2 and duplex terminals conversation, it is characterized in that, described public network access unit comprises public telephone net unit and global system for mobile communications unit, wherein, the public telephone net unit is used for sending described call signal and/or voice signal by public telephone network switch or public telephone network from described duplex terminals reception and/or to described duplex terminals, and the global system for mobile communications unit is used for sending described call signal and/or voice signal by the global mobile communication network from described duplex terminals reception and/or to described duplex terminals;
The system of described single worker's terminal and duplex terminals conversation also comprises the audio exchange unit, is used for carrying out the switching of voice-grade channel so that transmit described voice signal between described single worker's Transmit-Receive Unit and described public telephone net unit and described global system for mobile communications unit.
5. the method for a duplex terminals dialing and single worker's terminal call is characterized in that, may further comprise the steps:
S1, from the duplex terminals receiving calling signal, and set up conversation according to described call signal and connect;
S2, from described duplex terminals received speech signal, described voice signal is carried out digital assay handles, and judge whether described voice signal is people's acoustical signal, if, execution in step S3;
S3, the effective voice index signal of generation are made as emission state according to described effective voice index signal with single worker's Transmit-Receive Unit, and launch described voice signal to described single worker's terminal.
6. the method for duplex terminals dialing according to claim 5 and single worker's terminal call is characterized in that, if the voice signal that receives from described duplex terminals is inhuman acoustical signal, described method also comprises:
Generate invalid voice index signal, and described single worker's Transmit-Receive Unit is made as accepting state according to described invalid voice index signal.
7. according to the method for claim 5 or 6 described duplex terminals dialing and single worker's terminal call, it is characterized in that described step S2 also comprises the described voice signal of buffer memory.
8. the method for single worker's terminal dialing and duplex terminals conversation is characterized in that, may further comprise the steps:
S4, from single worker's terminal receiving calling signal, and set up conversation according to described call signal and connect;
S5, from described duplex terminals received speech signal, described voice signal is carried out digital assay handles, and judge whether described voice signal is people's acoustical signal, if, execution in step S3;
S6, the effective voice index signal of generation are made as emission state according to described effective voice index signal with single worker's Transmit-Receive Unit, and launch described voice signal to described single worker's terminal.
9. the method for duplex terminals dialing according to claim 8 and single worker's terminal call is characterized in that, if the voice signal that receives from described duplex terminals is inhuman acoustical signal, described method also comprises:
Generate invalid voice index signal, and described single worker's Transmit-Receive Unit is made as accepting state according to described invalid voice index signal.
10. according to Claim 8 or the method for the dialing of 9 described duplex terminals and single worker's terminal call, it is characterized in that described step S5 also comprises the described voice signal of buffer memory.
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| CN109639901A (en) * | 2019-01-17 | 2019-04-16 | 深圳市沃特沃德股份有限公司 | Switch method, apparatus, storage medium and the computer equipment of intercommunication mode |
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