CN113746583A - Remote management system, method, device and storage medium of public broadcasting equipment - Google Patents
Remote management system, method, device and storage medium of public broadcasting equipment Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
- H04H20/12—Arrangements for observation, testing or troubleshooting
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
- G10L25/00—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00
- G10L25/03—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 characterised by the type of extracted parameters
- G10L25/24—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 characterised by the type of extracted parameters the extracted parameters being the cepstrum
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
- G10L25/00—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00
- G10L25/48—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 specially adapted for particular use
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H60/00—Arrangements for broadcast applications with a direct linking to broadcast information or broadcast space-time; Broadcast-related systems
- H04H60/09—Arrangements for device control with a direct linkage to broadcast information or to broadcast space-time; Arrangements for control of broadcast-related services
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
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Abstract
The invention discloses a remote management system of public broadcasting equipment, which relates to the technical field of control of the public broadcasting equipment and comprises a plurality of controlled terminals and at least one control terminal; each controlled end comprises public broadcasting equipment, a control module and a pickup module; the control module is in communication connection with the control end and is used for receiving a working instruction sent by the control end and controlling the public broadcasting equipment to work; the pickup module is used for collecting sound information sent by public broadcasting equipment and sending the sound information to the control end so that the control end can judge whether the broadcasting state of the controlled end is abnormal or not. The invention also discloses a corresponding remote control method, a corresponding remote control device and a corresponding storage medium, which can effectively improve the management efficiency of the public broadcasting equipment and conveniently and effectively master whether the public broadcasting equipment in each place works normally or not.
Description
Technical Field
The invention relates to the technical field of control of public broadcasting equipment, in particular to a remote management system, a remote management method, a remote management device and a storage medium of public broadcasting equipment.
Background
Today, with high coverage of the internet, broadcasting equipment still plays an indispensable role in paging and emergency broadcasting of disastrous accidents.
However, the inventor has found in long-term practice that although many public broadcasting devices are already distributed in general villages and counties, an effective means for managing these numerous devices is still lacking, resulting in at least the following problems in practice:
1. when broadcasting needs to be issued, in the prior art, commands need to be issued layer by layer, and finally, the commands are issued directly on public broadcasting equipment by broadcast management personnel at the basic level, so that the management efficiency of the public broadcasting equipment is low;
2. the public broadcasting equipment of the basic level is relatively dispersed in arrangement, the maintenance and management cost is relatively high, and whether the working state of each public broadcasting equipment is normal or not is difficult to grasp in time, so that the public broadcasting equipment can not play a corresponding notification role in emergency.
Disclosure of Invention
An object of the present invention is to provide a remote management system, method, apparatus and storage medium for public broadcasting equipment, which can effectively improve the management efficiency of public broadcasting equipment and conveniently and effectively master whether public broadcasting equipment in various regions is working normally.
A remote management system of public broadcasting equipment is characterized by comprising a plurality of controlled terminals and at least one control terminal;
each controlled end comprises public broadcasting equipment, a control module and a pickup module;
the control module is in communication connection with the control end and is used for receiving a working instruction sent by the control end and controlling the public broadcasting equipment to work;
the pickup module is used for collecting sound information sent by the public broadcasting equipment and sending the sound information to the control end through the control module;
the control end is used for sending the working instruction to the controlled end according to the operation of a user; the audio playing device is also used for sending audio to be played to the controlled end and receiving the sound information; the audio playing device is also used for judging whether the corresponding broadcasting state of the controlled end is abnormal or not according to the similarity between the sound information and the audio to be played;
and judging whether the broadcasting state of the corresponding controlled end is abnormal or not according to the similarity between the sound information and the audio to be played, wherein the judgment of the similarity between the sound information and the audio to be played is based on a Mel frequency cepstrum parameter.
According to the remote management system of the public broadcasting equipment, the plurality of controlled terminals are connected to the control terminal, so that the control command and the audio to be played which needs to be issued can be conveniently issued through the control terminal, and the management control efficiency of the public broadcasting equipment is greatly improved. The sound pickup module of the controlled end is used for collecting sound information sent by the public broadcasting equipment, and whether the sound information meets the similarity requirement of the audio to be played or not is determined in a similarity comparison mode, so that whether the public broadcasting equipment works normally or not is judged; and the change to original public radio equipment only need install pickup module additional can, realized the effective monitoring to public radio equipment when minimizing transformation cost.
In addition, the invention also provides the following additional technical characteristics:
further, the controlled end further comprises a power supply module, and the power supply module comprises a solar power supply module and a power grid power supply module;
the solar power supply module comprises a solar panel and a solar cell and is used for supplying power to the control module;
the power grid power supply module is used for supplying power to the public broadcasting equipment and the pickup module, and the solar battery is charged when the electric quantity of the solar battery is lower than a preset electric quantity threshold value.
Further, the type of the working instruction comprises at least one of a public broadcasting equipment starting instruction, a public broadcasting equipment closing instruction, an audio playing control instruction and a volume adjusting instruction; the work order also comprises identification information of the controlled end.
Furthermore, the control module is also used for acquiring the working state of the controlled end and sending the working state to the control end; the working state comprises a power-off state, an idle state and a broadcasting state.
Further, the determining the similarity between the sound information and the audio to be played based on the mel-frequency cepstrum parameter includes:
respectively calculating Mel frequency cepstrum parameters of the sound information and the audio to be played;
calculating the cosine similarity of the Mel frequency cepstrum parameter of the sound information and the Mel frequency cepstrum parameter of the audio to be played;
judging whether the cosine similarity reaches a preset similarity threshold value;
if the cosine similarity reaches the similarity threshold, judging that the broadcasting state of the controlled end is normal;
and if the cosine similarity does not reach the similarity threshold, judging that the broadcasting state of the controlled end is abnormal.
Further, with the sound information or the audio to be played as a target audio, the mel-frequency cepstrum parameter calculation includes the steps of:
preprocessing the target audio to obtain a preprocessed target audio; the preprocessing comprises pre-emphasis, framing and Hamming window adding;
carrying out short-time Fourier transform on the preprocessed target audio to obtain a transformed audio signal; the transformed audio signal y (k) satisfies the following relationship:
wherein y (k) represents the transformed audio signal, k represents an argument in the frequency domain, y (N) represents the preprocessed target audio, and N is 512;
calculating a power spectrum from the transformed audio signal; the power spectrum satisfies the following relationship:
wherein P represents the power spectrum;
setting the number of filters included in the Mel filter set to be 40, and calculating the energy output of each Mel filter set; the energy output satisfies the following relationship:
s(m)＝P*Hm(k)
wherein s (m) represents the energy output of the mth Mel filter, Hm(k) (ii) represents the frequency response of the mth mel filter, and f (m) represents the center frequency of the mth mel filter; the interval between the center frequencies of adjacent Mel filters is widened with the increase of m value;
calculating mel frequency cepstrum parameters of the target audio frequency according to the energy output; the mel-frequency cepstrum parameter of the target audio frequency satisfies the following relation:
C＝(c1,c2,…,cL)
wherein C is a vector representing the Mel frequency cepstrum parameter of the target audio, M represents the number of Mel filters, and L represents the order of the Mel frequency cepstrum parameter.
Further, the preprocessing the target audio to obtain a preprocessed target audio includes:
pre-emphasis processing is carried out on the target audio to obtain a pre-emphasized target audio; the pre-emphasized target audio satisfies the following relationship:
x′(t)＝x(t)-ax(t-1)
wherein x (t) represents the original audio of the target audio, x' (t) represents the pre-emphasized target audio, and a represents filter coefficients;
performing framing processing on the pre-emphasized target audio to obtain a framed target audio;
carrying out Hamming window adding processing on the framed target audio to obtain a windowed target audio; the windowed target audio satisfies the following relationship:
y(n)＝x′(n)*W(n)
where x' (n) represents one frame of data, b is 0.46, τ is the window length, and 0 ≦ n ≦ τ -1.
Another objective of the present invention is to provide a remote management method for public address equipment, which is operated at the control end of the remote management system; the remote management method comprises a control process and a broadcast check process; the control process includes the steps of:
receiving input user operation and generating a corresponding work instruction according to the user operation;
sending the working instruction to a controlled end corresponding to the working instruction;
the broadcast check process includes the steps of:
sending audio to be played to a target controlled end;
receiving sound information sent by a target controlled terminal;
and judging whether the broadcasting state of the corresponding target controlled end is abnormal or not according to the similarity between the sound information and the audio to be played.
Another object of the present invention is to propose a remote management apparatus of a public address device, comprising a processor, a memory and a computer program stored in the memory and configured to be executed by the processor, the processor implementing the method as described above when executing the computer program.
It is another object of the present invention to propose a computer-readable storage medium comprising a stored computer program, wherein the computer program, when running, controls an apparatus in which the computer-readable storage medium is located to perform the method as described above.
The invention has the beneficial effects that: by connecting the controlled terminals to the control terminal, the control command and the audio to be played to be issued can be conveniently issued through the control terminal, and the management control efficiency of the public broadcasting equipment is greatly improved. The sound pickup module of the controlled end is used for collecting sound information sent by the public broadcasting equipment, and whether the sound information meets the similarity requirement of the audio to be played or not is determined in a similarity comparison mode, so that whether the public broadcasting equipment works normally or not is judged; and the change to original public radio equipment only need install pickup module additional can, realized the effective monitoring to public radio equipment when minimizing transformation cost.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic structural diagram of a remote management system of a public address device according to embodiment 1 of the present invention;
fig. 2 is a schematic flowchart of a remote management method for a public address device according to embodiment 2 of the present invention;
fig. 3 is a schematic structural diagram of a remote management apparatus of a public address device according to embodiment 3 of the present invention.
Detailed Description
In order to make the objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. Several embodiments of the invention are presented in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
The embodiment 1 of the invention provides a remote management system of public broadcasting equipment. Referring to fig. 1, the remote management system 100 of the public address device includes at least one control end 110 and a plurality of controlled ends 120, for example, two, three or more controlled ends 120 may be specifically mentioned. The control end 110 is communicatively connected to each controlled end 120, and may specifically be in a communication mode such as wired communication or wireless communication.
Each controlled end 120 comprises a public broadcasting equipment 121, a control module 122 and a pickup module 123.
The controlled end 120 is in communication connection with the control end 110 through the control module 122, and the control module 122 is configured to receive a working instruction sent by the control end 110 and control the public broadcasting equipment 121 to work.
Preferably, the types of the work instructions include at least one of a public address 121 start instruction, a public address 121 close instruction, an audio play control instruction, and a volume adjustment instruction. The work order also includes identification information of the controlled end 120.
Preferably, the control module 122 is further configured to collect a working state of the controlled end 120 and send the working state to the control end 110; the working state comprises a power-off state, an idle state and a broadcasting state.
The sound pickup module 123 is configured to collect sound information sent by the public broadcasting equipment 121, and send the sound information to the control terminal 110 through the control module 122.
Preferably, the controlled end 120 may further include a power module 124, and the power module 124 includes a solar power supply module and a power grid supply module.
The solar power supply module comprises a solar panel and a solar cell and is used for supplying power to the control module 122.
The power grid power supply module is used for supplying power to the public broadcasting equipment 121 and the pickup module 123, and charging the solar battery when the electric quantity of the solar battery is lower than a preset electric quantity threshold value.
Because the control module 122 needs to be powered on for a long time to receive a working instruction and control the public broadcasting equipment 121 at any time, when the public broadcasting equipment 121 is in a power-off state, the electric quantity required by the control module 122 is kept low, and normal power supply can be kept in a solar power supply mode; and because the solar power supply may have uncertainty, the solar power supply is supplemented in a power grid power supply mode under the condition of insufficient solar power supply, so that the power supply stability is ensured on the basis of saving the electric energy loss.
The control end 110 is configured to send the work instruction to the controlled end 120 according to an operation of a user; the controlled end 120 is further configured to send an audio to be played to the controlled end 120, and receive the sound information; the audio playing module is further configured to determine whether the broadcast state of the controlled end 120 is abnormal according to the similarity between the sound information and the audio to be played;
the determining whether the broadcast state of the controlled terminal 120 is abnormal according to the similarity between the sound information and the audio to be played includes determining the similarity between the sound information and the audio to be played based on mel-frequency cepstrum parameters.
Preferably, the determining the similarity between the sound information and the audio to be played based on the mel-frequency cepstrum parameter includes steps S110 to S150.
And S110, respectively calculating the Mel frequency cepstrum parameters of the sound information and the audio to be played.
Specifically, the calculation process of the mel-frequency cepstrum parameters as shown in steps S111 to S115 may be performed with the sound information and the audio to be played as target audio, respectively.
And S111, preprocessing the target audio to obtain a preprocessed target audio. The preprocessing includes pre-emphasis, framing, and hamming window addition.
More specifically, the process of preprocessing the target audio may include steps S111a to S111 c.
And S111a, pre-emphasis processing is carried out on the target audio to obtain the pre-emphasized target audio. The pre-emphasized target audio satisfies the following relationship:
x′(t)＝x(t)-ax(t-1)
wherein x (t) represents original audio, x 'of the target audio'(t) represents the pre-emphasized target audio and a represents the filter coefficients.
S111b, performing framing processing on the pre-emphasized target audio to obtain a framed target audio.
S111c, carrying out Hamming window adding processing on the framed target audio to obtain a windowed target audio. The windowed target audio satisfies the following relationship:
y(n)＝x′(n)*W(n)
where x' (n) represents one frame of data, b is 0.46, τ is the window length, and 0 ≦ n ≦ τ -1.
And S112, carrying out short-time Fourier transform on the preprocessed target audio to obtain a transformed audio signal. The transformed audio signal y (k) satisfies the following relationship:
where y (k) represents the transformed audio signal, k represents an argument in the frequency domain, y (N) represents the preprocessed target audio, and N is 512.
And S113, calculating a power spectrum according to the converted audio signal. The power spectrum satisfies the following relationship:
wherein P represents the power spectrum.
S114, setting the number of filters included in the Mel filter bank to be 40, and calculating the energy output of each Mel filter bank. The energy output satisfies the following relationship:
s(m)＝P*Hm(k)
wherein s (m) represents the energy output of the mth Mel filter, Hm(k) The frequency response of the mth mel filter is shown, and f (m) shows the center frequency of the mth mel filter. The spacing of the center frequencies of adjacent mel-filters widens as the value of m increases.
And S115, calculating a Mel frequency cepstrum parameter of the target audio according to the energy output. The mel-frequency cepstrum parameter of the target audio frequency satisfies the following relation:
C＝(c1,c2,…,cL)
wherein C is a vector representing the Mel frequency cepstrum parameter of the target audio, M represents the number of Mel filters, and L represents the order of the Mel frequency cepstrum parameter.
And S120, calculating the cosine similarity of the Mel frequency cepstrum parameter of the sound information and the Mel frequency cepstrum parameter of the audio to be played.
And S130, judging whether the cosine similarity reaches a preset similarity threshold value.
S140, if the cosine similarity reaches the similarity threshold, determining that the broadcast state of the controlled end 120 is normal.
S150, if the cosine similarity does not reach the similarity threshold, determining that the broadcast state of the controlled end 120 is abnormal.
Specifically, the mel frequency cepstrum parameters of the sound information and the audio to be played are obtained based on step S110, and the cosine similarity is determined. When the cosine similarity reaches a similarity threshold, for example, the similarity threshold is preset to be 0.9, and when the cosine similarity reaches 0.9 or more, the broadcast state of the controlled end 120 is determined to be normal; and if the broadcast state is lower than 0.9, the broadcast state of the controlled end 120 is judged to be abnormal, so that the condition that the public broadcasting equipment 121 cannot broadcast normally can be accurately grasped in time, and further, a manager can be notified to go to the site for maintenance.
In the remote management system for the public broadcasting equipment provided in embodiment 1 of the present invention, by accessing the controlled terminals to the control terminal, the control command and the audio to be played that needs to be issued can be conveniently issued through the control terminal, so that the management control efficiency of the public broadcasting equipment is greatly improved. The sound pickup module of the controlled end is used for collecting sound information sent by the public broadcasting equipment, and whether the sound information meets the similarity requirement of the audio to be played or not is determined in a similarity comparison mode, so that whether the public broadcasting equipment works normally or not is judged; and the change to original public radio equipment only need install pickup module additional can, realized the effective monitoring to public radio equipment when minimizing transformation cost.
Embodiment 2 of the present invention provides a remote management method for a public broadcasting device, which is applied to the remote management system for a public broadcasting device described in embodiment 1 and is executed by a control terminal in the remote management system. Referring to fig. 2, the remote management method of the public address device may include a control process and an address check process.
The control process includes steps S211 to S212.
S211, receiving the input user operation, and generating a corresponding work instruction according to the user operation.
S212, sending the working instruction to the controlled end corresponding to the working instruction.
The announcement check process includes steps S221 to S223.
And S221, sending the audio to be played to the target controlled terminal.
And S222, receiving the sound information sent by the target controlled terminal.
And S223, judging whether the broadcasting state of the corresponding target controlled end is abnormal or not according to the similarity between the sound information and the audio to be played.
The specific working process of the remote management method for the public broadcasting equipment is as described in the remote management system for the public broadcasting equipment in embodiment 1, and is not described herein again.
In the remote management method for the public broadcasting equipment provided by embodiment 2 of the present invention, by accessing the controlled terminals to the control terminal, the control command and the audio to be played that needs to be issued can be conveniently issued through the control terminal, so that the management control efficiency of the public broadcasting equipment is greatly improved. The sound pickup module of the controlled end is used for collecting sound information sent by the public broadcasting equipment, and whether the sound information meets the similarity requirement of the audio to be played or not is determined in a similarity comparison mode, so that whether the public broadcasting equipment works normally or not is judged; and the change to original public radio equipment only need install pickup module additional can, realized the effective monitoring to public radio equipment when minimizing transformation cost.
Fig. 3 is a schematic diagram of a remote management apparatus 30 for public address equipment according to embodiment 3 of the present invention. The remote management apparatus 30 of the public address device includes: a processor 31, a memory 32 and a computer program stored in said memory 32 and executable on said processor 31, such as a remote control program of a public address device. The processor 31, when executing the computer program, implements the steps in the above-mentioned embodiment of the remote management method for the public address device, for example, the steps of the remote management method for the public address device shown in fig. 2, so as to implement the functions of the remote management system for the public address device described in embodiment 1.
Illustratively, the computer program may be divided into one or more modules, which are stored in the memory 32 and executed by the processor 31 to accomplish the present invention. The one or more modules may be a series of computer program instruction segments capable of performing specific functions, which are used to describe the execution process of the computer program in the remote management device of the public address equipment. For example, the computer program may implement the remote control method of the public address device according to embodiment 2 including a control process and an address check process; the control process includes the steps of: receiving input user operation and generating a corresponding work instruction according to the user operation; sending the working instruction to a controlled end corresponding to the working instruction; the broadcast check process includes the steps of: sending audio to be played to a target controlled end; receiving sound information sent by a target controlled terminal; and judging whether the broadcasting state of the corresponding target controlled end is abnormal or not according to the similarity between the sound information and the audio to be played.
The remote management device 30 of the public broadcasting equipment may be a desktop computer, a notebook, a palm computer, a cloud server, or other computing equipment. The remote management device 30 of the public announcement equipment can include, but is not limited to, a processor, a memory. It will be appreciated by those skilled in the art that the schematic diagram is merely an example of the remote management apparatus 30 of the public address device and does not constitute a limitation of the remote management apparatus 30 of the public address device, and may include more or less components than those shown, or combine some components, or different components, for example, the remote management apparatus 30 of the public address device may further include an input-output device, a network access device, a bus, etc.
The Processor may be a Central Processing Unit (CPU), other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic, discrete hardware components, etc. The general purpose processor may be a microprocessor or the processor may be any conventional processor, etc., and the processor 31 is a control center of the remote management apparatus 30 of the public address device, and various interfaces and lines are used to connect various parts of the remote management apparatus 30 of the whole public address device.
The memory 32 may be used for storing the computer programs or modules, and the processor 31 may implement various functions of the remote management device 30 of the public address equipment by running or executing the computer programs or modules stored in the memory 32 and calling data stored in the memory. The memory 32 may mainly include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application program required by at least one function (such as a sound playing function, an image playing function, etc.), and the like; the storage data area may store data (such as audio data, a phonebook, etc.) created according to the use of the cellular phone, and the like. In addition, the memory may include high speed random access memory, and may also include non-volatile memory, such as a hard disk, a memory, a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card), at least one magnetic disk storage device, a Flash memory device, or other volatile solid state storage device.
Wherein, the modules or units integrated with the remote management device 30 of the public address equipment can be stored in a computer readable storage medium if they are implemented in the form of software functional units and sold or used as independent products. Based on such understanding, all or part of the flow of the method according to the embodiments of the present invention may also be implemented by a computer program, which may be stored in a computer-readable storage medium, and when the computer program is executed by a processor, the steps of the method embodiments may be implemented. Wherein the computer program comprises computer program code, which may be in the form of source code, object code, an executable file or some intermediate form, etc. The computer-readable medium may include: any entity or device capable of carrying the computer program code, recording medium, usb disk, removable hard disk, magnetic disk, optical disk, computer Memory, Read-Only Memory (ROM), Random Access Memory (RAM), electrical carrier wave signals, telecommunications signals, software distribution medium, and the like.
It should be noted that the above-described device embodiments are merely illustrative, where the units described as separate parts may or may not be physically separate, and the parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. In addition, in the drawings of the embodiment of the apparatus provided by the present invention, the connection relationship between the modules indicates that there is a communication connection between them, and may be specifically implemented as one or more communication buses or signal lines. One of ordinary skill in the art can understand and implement it without inventive effort.
The remote management device and the readable storage medium for the public broadcasting equipment provided by the embodiment 3 of the invention can conveniently issue the control instruction and the audio to be played, which needs to be issued, through the control end by accessing the controlled ends to the control end, thereby greatly improving the management control efficiency of the public broadcasting equipment. The sound pickup module of the controlled end is used for collecting sound information sent by the public broadcasting equipment, and whether the sound information meets the similarity requirement of the audio to be played or not is determined in a similarity comparison mode, so that whether the public broadcasting equipment works normally or not is judged; and the change to original public radio equipment only need install pickup module additional can, realized the effective monitoring to public radio equipment when minimizing transformation cost.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. The remote management system of the public broadcasting equipment is characterized by comprising a plurality of controlled ends and at least one control end;
each controlled end comprises public broadcasting equipment, a control module and a pickup module;
the control module is in communication connection with the control end and is used for receiving a working instruction sent by the control end and controlling the public broadcasting equipment to work;
the pickup module is used for collecting sound information sent by the public broadcasting equipment and sending the sound information to the control end through the control module;
the control end is used for sending the working instruction to the controlled end according to the operation of a user; the audio playing device is also used for sending audio to be played to the controlled end and receiving the sound information; the audio playing device is also used for judging whether the corresponding broadcasting state of the controlled end is abnormal or not according to the similarity between the sound information and the audio to be played;
and judging whether the broadcasting state of the corresponding controlled end is abnormal or not according to the similarity between the sound information and the audio to be played, wherein the judgment of the similarity between the sound information and the audio to be played is based on a Mel frequency cepstrum parameter.
2. The remote management system of public address equipment as claimed in claim 1, wherein the controlled end further comprises a power module, the power module comprises a solar power supply module and a power grid power supply module;
the solar power supply module comprises a solar panel and a solar cell and is used for supplying power to the control module;
the power grid power supply module is used for supplying power to the public broadcasting equipment and the pickup module, and the solar battery is charged when the electric quantity of the solar battery is lower than a preset electric quantity threshold value.
3. The remote management system of the public address device of claim 1, wherein the type of the work instruction comprises at least one of a public address device start-up instruction, a public address device shut-down instruction, an audio play control instruction, and a volume adjustment instruction; the work order also comprises identification information of the controlled end.
4. The remote management system of public broadcasting equipment as claimed in claim 1, wherein the control module is further configured to collect a working state of the controlled terminal and send the working state to the control terminal; the working state comprises a power-off state, an idle state and a broadcasting state.
5. The remote management system of public address equipment according to claim 1, wherein the determining the similarity between the sound information and the audio to be played based on mel-frequency cepstrum parameters comprises:
respectively calculating Mel frequency cepstrum parameters of the sound information and the audio to be played;
calculating the cosine similarity of the Mel frequency cepstrum parameter of the sound information and the Mel frequency cepstrum parameter of the audio to be played;
judging whether the cosine similarity reaches a preset similarity threshold value;
if the cosine similarity reaches the similarity threshold, judging that the broadcasting state of the controlled end is normal;
and if the cosine similarity does not reach the similarity threshold, judging that the broadcasting state of the controlled end is abnormal.
6. The remote management system of public address equipment according to claim 5, wherein with the sound information or the audio to be played as a target audio, the mel-frequency cepstrum parameter calculation comprises the steps of:
preprocessing the target audio to obtain a preprocessed target audio; the preprocessing comprises pre-emphasis, framing and Hamming window adding;
carrying out short-time Fourier transform on the preprocessed target audio to obtain a transformed audio signal; the transformed audio signal y (k) satisfies the following relationship:
wherein y (k) represents the transformed audio signal, k represents an argument in the frequency domain, y (N) represents the preprocessed target audio, and N is 512;
calculating a power spectrum from the transformed audio signal; the power spectrum satisfies the following relationship:
wherein P represents the power spectrum;
setting the number of filters included in the Mel filter set to be 40, and calculating the energy output of each Mel filter set; the energy output satisfies the following relationship:
s(m)＝P*Hm(k)
wherein s (m) represents the energy output of the mth Mel filter, Hm(k) (ii) represents the frequency response of the mth mel filter, and f (m) represents the center frequency of the mth mel filter; the interval between the center frequencies of adjacent Mel filters is widened with the increase of m value;
calculating mel frequency cepstrum parameters of the target audio frequency according to the energy output; the mel-frequency cepstrum parameter of the target audio frequency satisfies the following relation:
C＝(c1,c2,…,cL)
wherein C is a vector representing the Mel frequency cepstrum parameter of the target audio, M represents the number of Mel filters, and L represents the order of the Mel frequency cepstrum parameter.
7. The remote management system of public address equipment according to claim 6, wherein the pre-processing the target audio to obtain a pre-processed target audio comprises:
pre-emphasis processing is carried out on the target audio to obtain a pre-emphasized target audio; the pre-emphasized target audio satisfies the following relationship:
x′(t)＝x(t)-ax(t-1)
wherein x (t) represents the original audio of the target audio, x' (t) represents the pre-emphasized target audio, and a represents filter coefficients;
performing framing processing on the pre-emphasized target audio to obtain a framed target audio;
carrying out Hamming window adding processing on the framed target audio to obtain a windowed target audio; the windowed target audio satisfies the following relationship:
y(n)＝x′(n)*W(n)
where x' (n) represents one frame of data, b is 0.46, τ is the window length, and 0 ≦ n ≦ τ -1.
8. A remote management method for public address equipment, which is operated at a control end of a remote management system of any one of claims 1 to 7; the remote management method comprises a control process and a broadcast check process; the control process includes the steps of:
receiving input user operation and generating a corresponding work instruction according to the user operation;
sending the working instruction to a controlled end corresponding to the working instruction;
the broadcast check process includes the steps of:
sending audio to be played to a target controlled end;
receiving sound information sent by a target controlled terminal;
and judging whether the broadcasting state of the corresponding target controlled end is abnormal or not according to the similarity between the sound information and the audio to be played.
9. A remote management apparatus for a public address device, comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor implements the method of claim 8 when executing the program.
10. A readable storage medium having stored thereon computer instructions, which when executed by a processor, implement the method of claim 8.
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