CN109451254A - A kind of smart television digital receiver - Google Patents
A kind of smart television digital receiver Download PDFInfo
- Publication number
- CN109451254A CN109451254A CN201811535072.0A CN201811535072A CN109451254A CN 109451254 A CN109451254 A CN 109451254A CN 201811535072 A CN201811535072 A CN 201811535072A CN 109451254 A CN109451254 A CN 109451254A
- Authority
- CN
- China
- Prior art keywords
- voice
- signal
- identifier
- zigbee
- smart television
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/41—Structure of client; Structure of client peripherals
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/41—Structure of client; Structure of client peripherals
- H04N21/422—Input-only peripherals, i.e. input devices connected to specially adapted client devices, e.g. global positioning system [GPS]
- H04N21/42203—Input-only peripherals, i.e. input devices connected to specially adapted client devices, e.g. global positioning system [GPS] sound input device, e.g. microphone
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/41—Structure of client; Structure of client peripherals
- H04N21/422—Input-only peripherals, i.e. input devices connected to specially adapted client devices, e.g. global positioning system [GPS]
- H04N21/42204—User interfaces specially adapted for controlling a client device through a remote control device; Remote control devices therefor
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/41—Structure of client; Structure of client peripherals
- H04N21/426—Internal components of the client ; Characteristics thereof
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Human Computer Interaction (AREA)
- Selective Calling Equipment (AREA)
Abstract
The invention discloses a kind of smart television digital receiver, voice picks up the voice signal that identifier is used to receive mobile client by GPRS module；Voice picks up identifier and connects ZigBee coordinator by ZigBee module, the ZigBee coordinator is connect with ZigBee gateway, ZigBee gateway connects arm processor by serial communication device, and voice picks up identifier and voice messaging is sent to arm processor by ZigBee gateway and serial communication device；Television set acoustic control command information is sent to Acoustic control remote controller by ZigBee module by arm processor, and corresponding infrared emission coding is sent to digital television receiver by Acoustic control remote controller, and infrared emission coding is sent to DTV STB by digital television receiver.Smart television digital receiver of the invention can realize the control to television set by voice, eliminate remote control, convenient and efficient, also have speaker playing function, so that user has better audio visual effect.
Description
Technical field
The invention belongs to intelligent appliance field more particularly to a kind of smart television digital receivers.
Background technique
Conventional set-top box is in application end very good solution self problem, by the cooperation with medium and to third party
The support of software, high definition set top box has been that user has done many work in terms of resource on the market at present, but traditional machine top
Box mode of operation mainly realizes the control to television set by button remote controller but without biggish improvement, inconvenient to use,
Leverage the operating experience of user.
Summary of the invention
In view of the problems of the existing technology, the present invention provides a kind of smart television digital receivers.
The invention is realized in this way a kind of smart television digital receiver includes mobile client, voice pickup identification
Device, ZigBee coordinator, ZigBee gateway, serial communication device, arm processor, Acoustic control remote controller, GPRS module, number electricity
Depending on receiver, speech player, DTV STB；
Voice picks up the voice signal that identifier is used to receive mobile client by GPRS module；
Voice picks up identifier and connects ZigBee coordinator by ZigBee module, and the ZigBee coordinator and ZigBee gateway connect
It connects, ZigBee gateway connects arm processor by serial communication device, and voice picks up identifier and passes through ZigBee gateway and serial ports
Voice messaging is sent to arm processor by communication device；
Television set acoustic control command information is sent to Acoustic control remote controller by ZigBee module by arm processor, and Acoustic control remote controller will
Corresponding infrared emission coding is sent to digital television receiver, and infrared emission coding is sent to number by digital television receiver
TV set-top box.
Further, GPRS module integrated installation picks up identifier in voice, which picks up identifier and include:
For analyzing the frequency analysis module of the frequency signal of voice；
For calculating and the phase curve computing module of the approximate phase curve of the time change of the phase of frequency signal；
Error calculation unit for being calculated the error between the phase curve and the phase of frequency signal；
For based on the error to voice signal whether be periodic sound the voice signal identification module that is identified of signal.
Further, voice picks up identifier and the denoising to voice signal is realized by the following method:
Step 1: primary speech signal is converted to digital signal, using extra in single order high-pass filter removal voice signal
Noise, eliminate dc shift, pass through and aggravate processing and retain the pond sound signal useful to characteristic parameter；
Step 2: the processing of voice signal, takes at 256 o'clock as a 32ms sound frame and eliminates to each sound frame multiplied by Hamming window
The discontinuity at sound frame both ends removes noise using low-pass filter.
Further, voice picks up after identifier collects voice signal, using orthogonal wavelet filter group come to signal into
Row pre-filtering carries out fine granularity denoising to each frequency band of speech signal, extracts each frequency range wavelet coefficient, reconstruct voice
Signal.
Further, voice picks up identifier and the voice messaging after pre-filtering is sent to arm processor, arm processor benefit
Pitch period parameter is calculated with Cepstrum Method, wavelet coefficient is converted by Mel cepstrum coefficient by Mel filter group, will be obtained
Two kinds of parameter groups at a characteristic vector as vocal print feature, and be stored in Acoustic control remote controller database search with the sound
The matched voice messaging of line characteristic information.
Further, voice picks up identifier and uses LD3320 module chip.
Further, serial communication device is equipped with jtag interface, and the jtag interface connects debugging maintenance module.
Further, speech player is connect with digital television receiver and DTV STB respectively.
Further, serial communication device is connect by MAX232 chip with the UART interface on arm processor.
Further, voice signal identification module is for every voice signal all the way, according to the following equation in voice signal
Each frame voice signal carries out noise tracking, obtains the noise spectrum N (w, n) of each frame voice signal:
Wherein, X (w, n) indicates the Short Time Fourier Transform of the voice signal；αu、αdFor predetermined coefficient and 0 < αd<αu <1; w
Indicate the frequency point serial number on frequency domain；N indicates the frame number in time domain.
Smart television digital receiver of the invention can realize the control to television set by voice, eliminate remote control, side
Just quick, speaker playing function is also had, so that user has better audio visual effect.
Detailed description of the invention
Fig. 1 is the structural block diagram of smart television digital receiver provided in an embodiment of the present invention；
In figure: 1, mobile client；2, voice picks up identifier；2-1, speech frequency analysis module；2-2, phase curve calculate
Module；2-3, error calculation unit；2-4, voice signal identification module；3, ZigBee coordinator；4, ZigBee gateway；5, serial ports
Communication device；6, arm processor；7, Acoustic control remote controller；8, GPRS module；9, digital television receiver；10, speech player；
11, DTV STB.
Specific embodiment
In order to further understand the content, features and effects of the present invention, the following examples are hereby given, and cooperate attached drawing
Detailed description are as follows.
Structure of the invention is explained in detail with reference to the accompanying drawing.
A kind of smart television digital receiver, including mobile client 1, voice pick up identifier 2, ZigBee coordinator 3,
ZigBee gateway 4, serial communication device 5, arm processor 6, Acoustic control remote controller 7, GPRS module 8, digital television receiver 9, language
Sound player 10, DTV STB 11；
Voice picks up the voice signal that identifier 2 is used to receive mobile client 1 by GPRS module 8, the integrated peace of GPRS module 8
Identifier 2 is picked up loaded on voice, GPRS module 8 is using the SIM800 of SIMCOM, and voice pickup identifier 2 is using LD3320 module
Chip is compared the voice messaging of acquisition, identifies, when identifying successfully, feeds back to ZigBee coordinator 3, ZigBee association
The starting of device 3 and control ZigBee-network are adjusted, after network is established, is responsible for receiving the control information of voice node and send corresponding
Control information to each ZigBee child node, be used to transmit model beyond ZigBee-network by the function that GPRS module 8 is realized
There is when enclosing by such as mobile phone of mobile client 1 equipment of GPRS transmission function；
It includes: the frequency analysis module 2-1 for analyzing the frequency signal of voice, the frequency analysis mould that voice, which picks up identifier 2,
The analysis data of block 2-1 can be used for one of foundation of subsequent speech recognition；Become for calculating with the time of the phase of frequency signal
The phase curve computing module 2-2 for changing approximate phase curve, between the phase curve and the phase of frequency signal
The error calculation unit 2-3 that is calculated of error, the voice signal within default error is regarded as can received language
Sound signal, for whether being that the voice signal that is identified of signal of periodic sound identifies mould to voice signal based on the error
Block 2-4, voice signal relevant calculation can be realized in arm processor by related algorithm；
Voice picks up identifier 2 and the denoising to voice signal is realized by the following method:
Step 1: primary speech signal is converted to digital signal, using extra in single order high-pass filter removal voice signal
Noise, eliminate dc shift, pass through and aggravate processing and retain the pond sound signal useful to characteristic parameter；
Step 2: the processing of voice signal, takes at 256 o'clock as a 32ms sound frame and eliminates to each sound frame multiplied by Hamming window
The discontinuity at sound frame both ends removes noise using low-pass filter.
In embodiments of the present invention, after voice pickup identifier collects voice signal, orthogonal wavelet filter group is utilized
To carry out pre-filtering to signal, fine granularity denoising carried out to each frequency band of speech signal, extracts each frequency range wavelet coefficient,
Voice signal is reconstructed, the voice messaging after pre-filtering is sent to arm processor, arm processor is calculated using Cepstrum Method
Wavelet coefficient is converted into Mel cepstrum coefficient by Mel filter group by pitch period parameter, by obtain two kinds of parameter groups at
One characteristic vector as vocal print feature, and in the user speech library being pre-stored in Acoustic control remote controller database search with
The voice messaging of the vocal print feature information matches then not receives phonetic order if it is the voice messaging except sound bank.
Voice signal identification module 2-4 is for every voice signal all the way, according to the following equation to each in voice signal
Frame voice signal carries out noise tracking, obtains the noise spectrum N (w, n) of each frame voice signal:
Wherein, X (w, n) indicates the Short Time Fourier Transform of the voice signal；αu、αdFor predetermined coefficient and 0 < αd<αu <1; w
Indicate the frequency point serial number on frequency domain；N indicates the frame number in time domain.
ZigBee gateway 4 connects arm processor 6 by serial communication device 5, and serial communication device 5 uses MAX232 core
Piece is connect with the UART interface on arm processor 6, and serial communication device 5 is equipped with jtag interface, the jtag interface connection debugging
Maintenance module；
Voice picks up identifier 2 and voice messaging is sent to arm processor 6 by ZigBee gateway 4 and serial communication device 5,
Arm processor 6 can be using existing ARM embedded module in the market, such as GEA-6317；
Television set acoustic control command information is sent to Acoustic control remote controller 7, Acoustic control remote controller 7 by ZigBee module by arm processor 6
Corresponding infrared emission coding is sent to digital television receiver 9, infrared emission coding is sent to by digital television receiver 9
DTV STB 11；
Arm processor 6 first learns the infrared signal of Acoustic control remote controller 7, and corresponding coding is stored in respective modules
Memory in, the corresponding address of every Codabar code, voice messaging and code matches are arranged, such as voice messaging " shutdown ", " electric
Shadow channel " etc. is corresponding with the code of appropriate address.When ZigBee node, which receives instruction, to be needed to control television set,
Arm processor 6 will transfer the coding of the infrared emission under the address according to instruction and be sent to Acoustic control remote controller 7, Acoustic control remote controller 7
Send command signal to digital television receiver 9, digital television receiver 9 when carrying out semantic understanding, periodically from for number it is electric
Obtain the information such as program listing, movie and television contents address, internal ID number depending on the radio and television services device that set-top box provides content, according to
The result of family speech recognition carries out match query and control command is returned to DTV STB 11 executing, and DTV connects
Receipts machine 9 and DTV STB 11 are also equipped with speech player 10 and carry out corresponding voice reminder casting.
Smart television digital receiver of the invention can realize the control to television set by voice, eliminate remote control, side
Just quick, speaker playing function is also had, so that user has better audio visual effect.
The above is only the preferred embodiments of the present invention, and is not intended to limit the present invention in any form,
Any simple modification made to the above embodiment according to the technical essence of the invention, equivalent variations and modification, belong to
In the range of technical solution of the present invention.
Claims (10)
1. a kind of smart television digital receiver, including mobile client, voice pick up identifier, ZigBee coordinator,
ZigBee gateway, serial communication device, arm processor, Acoustic control remote controller, GPRS module, digital television receiver, voice play
Device, DTV STB, it is characterised in that:
Voice picks up the voice signal that identifier is used to receive mobile client by GPRS module；
Voice picks up identifier and connects ZigBee coordinator by ZigBee module, and the ZigBee coordinator and ZigBee gateway connect
It connects, ZigBee gateway connects arm processor by serial communication device, and voice picks up identifier and passes through ZigBee gateway and serial ports
Voice messaging is sent to arm processor by communication device；
Television set acoustic control command information is sent to Acoustic control remote controller by ZigBee module by arm processor, and Acoustic control remote controller will
Corresponding infrared emission coding is sent to digital television receiver, and infrared emission coding is sent to number by digital television receiver
TV set-top box.
2. smart television digital receiver as described in claim 1, which is characterized in that GPRS module integrated installation is picked up in voice
Identifier, the voice pick up identifier and include:
For analyzing the frequency analysis module of the frequency signal of voice；
For calculating and the phase curve computing module of the approximate phase curve of the time change of the phase of frequency signal；
Error calculation unit for being calculated the error between the phase curve and the phase of frequency signal；
For based on the error to voice signal whether be periodic sound the voice signal identification module that is identified of signal.
3. smart television digital receiver as claimed in claim 2, which is characterized in that voice picks up identifier by the following method
Realize the denoising to voice signal:
Step 1: primary speech signal is converted to digital signal, using extra in single order high-pass filter removal voice signal
Noise, eliminate dc shift, pass through and aggravate processing and retain the pond sound signal useful to characteristic parameter；
Step 2: the processing of voice signal, takes at 256 o'clock as a 32ms sound frame and eliminates to each sound frame multiplied by Hamming window
The discontinuity at sound frame both ends removes noise using low-pass filter.
4. smart television digital receiver as claimed in claim 2, which is characterized in that voice picks up identifier and collects voice letter
After number, pre-filtering is carried out to signal using orthogonal wavelet filter group, fine granularity is carried out to each frequency band of speech signal
Denoising, extracts each frequency range wavelet coefficient, reconstructs voice signal.
5. smart television digital receiver as claimed in claim 4, which is characterized in that voice picks up identifier will be after pre-filtering
Voice messaging is sent to arm processor, and arm processor calculates pitch period parameter using Cepstrum Method, passes through Mel filter group
Wavelet coefficient is converted into Mel cepstrum coefficient, using obtain two kinds of parameter groups at a characteristic vector as vocal print feature, and
It is stored in the voice messaging searched in Acoustic control remote controller database with the vocal print feature information matches.
6. smart television digital receiver as described in claim 1, which is characterized in that voice picks up identifier and uses LD3320 mould
Block chip.
7. smart television digital receiver as described in claim 1, which is characterized in that serial communication device is equipped with jtag interface,
The jtag interface connects debugging maintenance module.
8. smart television digital receiver as described in claim 1, which is characterized in that speech player connects with DTV respectively
Receipts machine is connected with DTV STB.
9. smart television digital receiver as described in claim 1, which is characterized in that serial communication device passes through MAX232 chip
It is connect with the UART interface on arm processor.
10. smart television digital receiver as claimed in claim 2, which is characterized in that voice signal identification module is for each
Road voice signal carries out noise tracking to each frame voice signal in voice signal according to the following equation, obtains each frame sound
The noise spectrum N (w, n) of sound signal:
Wherein, X (w, n) indicates the Short Time Fourier Transform of the voice signal；αu、αdFor predetermined coefficient and 0 < αd<αu <1; w
Indicate the frequency point serial number on frequency domain；N indicates the frame number in time domain.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811535072.0A CN109451254A (en) | 2018-12-14 | 2018-12-14 | A kind of smart television digital receiver |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811535072.0A CN109451254A (en) | 2018-12-14 | 2018-12-14 | A kind of smart television digital receiver |
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| Publication Number | Publication Date |
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| CN109451254A true CN109451254A (en) | 2019-03-08 |
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| CN201811535072.0A Pending CN109451254A (en) | 2018-12-14 | 2018-12-14 | A kind of smart television digital receiver |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112242024A (en) * | 2020-10-16 | 2021-01-19 | 上海电机学院 | Oiling machine interaction system based on voice recognition |
| CN112367231A (en) * | 2020-11-26 | 2021-02-12 | 安徽理工大学 | Voice universal remote controller based on ZigBee technology |
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| CN112367231A (en) * | 2020-11-26 | 2021-02-12 | 安徽理工大学 | Voice universal remote controller based on ZigBee technology |
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