CN208691406U - Far field speech collecting system for smart television - Google Patents
Far field speech collecting system for smart television Download PDFInfo
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- CN208691406U CN208691406U CN201821668276.7U CN201821668276U CN208691406U CN 208691406 U CN208691406 U CN 208691406U CN 201821668276 U CN201821668276 U CN 201821668276U CN 208691406 U CN208691406 U CN 208691406U
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- far field
- microphone array
- field pickup
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Abstract
The utility model relates to voice collecting fields, disclose a kind of far field speech collecting system for smart television, to simplify the structure of far field speech collecting system.The utility model includes far field pickup microphone array board, TV AV interface and TV SOC chip, and the far field pickup microphone array board is electrically connected with the TV AV interface, and the TV AV interface is electrically connected with the TV SOC chip；The middle of TV left speaker and right speaker is arranged in the far field pickup microphone array board.The utility model is suitable for the far field voice collecting of smart television.
Description
Technical field
The utility model relates to voice collecting field, in particular to a kind of far field voice collecting system for smart television
System.
Background technique
With the fast development of artificial intelligence technology, will be used wider and wider, application scenarios are more and more diversified,
In most important one side be exactly speech recognition technology, come into being with the related electronic products of speech identifying function, it is close
Although identifying technology maturation by the near field voice for triggering realization manually, recognition accuracy is high, has been unable to meet people and thinks
It liberates both hands, limit the urgent need using distance, far field voice comes into being under Intellectualized Tendency, which passes through straight
The mode for connecing dialogue can interact at a distance, to a certain degree substitution manual key or the function of remote control, intelligence easy to operate
With more preferably user experience.
Television equipment is interior as " internet+TV " mode popularizes in recent years as family's indispensability electronic product
Hold resourceful, the application of far field voice, avoids user and back and forth searched in numerous and complicated resource cumbersome, can make to manipulate
Become simple and convenient and quick, activate far field phonetic function to engage in the dialogue by waking up word, to realize directly remote interaction.
The far field speech collecting system of smart television by far field as shown in Figure 1, its working principles are as follows: picked up first at present
Mixer acquires the mixed sound before TV, and the mixed sound includes voice, ambient sound and TV the machine sound, then
Far field sound pick up equipment sends collected mixed sound signal to reference signal acquisition processing module again；Far field sound pick up equipment is adopted
When collecting environment voice, reference signal acquisition processing module can acquire television set the machine voice signal simultaneously, and reference signal is adopted
Collection processing module receives the mixed sound that far field sound pick up equipment is sent and then acquires television set the machine voice signal according to it
Television set the machine voice signal in mixing voice is separated, separation thickness voice signal enters by television USB interface
TV SOC chip completes voice collecting；The speech engine in SOC chip carries out that voice can be carried out to user voice signal later
Identification and natural language processing scheduling algorithm, execute corresponding phonetic order.Therefore the far field voice of current smart television
Acquisition system needs to be arranged a special reference signal acquisition processing module, and structure is complex.
Utility model content
Technical problem to be solved by the utility model is: a kind of far field speech collecting system for smart television is provided,
To simplify the structure of far field speech collecting system.
To solve the above problems, the technical solution adopted in the utility model is: the far field voice collecting for smart television
System, including far field pickup microphone array board, TV AV interface and TV SOC chip, the far field pickup microphone array
Plate is electrically connected with the TV AV interface, and the TV AV interface is electrically connected with the TV SOC chip.
Further, TV left speaker and right speaker is being arranged in just in the far field pickup microphone array board
It is intermediate.
Further, the microphone array on the far field pickup microphone array board is classified as four wheat array of bar shaped.
Specifically, the far field pickup microphone array board can use audio digital signals array, thus the far field
Pickup microphone array board includes far field pickup digital microphone array, the far field pickup digital microphone array and the electricity
It is electrically connected depending on AV interface.
The far field pickup microphone array board can also use analog voice signal array, thus the far field pickup wheat
Gram wind array board includes far field pickup simulation microphone array and ADC analog-to-digital conversion module；The far field pickup simulates microphone
Array is electrically connected with ADC analog-to-digital conversion module, and the ADC analog-to-digital conversion module is electrically connected with the TV AV interface.
The far field pickup microphone array board can also be using audio digital signals array and analog voice signal simultaneously
Array, thus far field pickup microphone array board includes far field pickup digital microphone array, far field pickup simulation microphone array
Column and ADC analog-to-digital conversion module；The far field pickup simulation microphone array is electrically connected with ADC analog-to-digital conversion module, the ADC
Analog-to-digital conversion module, the far field pickup digital microphone array are electrically connected with the TV AV interface simultaneously.
The beneficial effects of the utility model are: the utility model only increases a far field pickup microphone array on TV
Plate, for acquiring user speech, output digit signals after the pickup microphone array board collected sound signal of far field are set by TV
Digital data transmission into TV SOC chip, is completed the acquisition of user voice by standby AV interface；Later, in television internal
SOC chip can carry out the echo cancellation process of the machine sounding reference signal, increase reference signal acquisition process mould without additional
Block, circuit structure is simple and recognition effect is good.
Detailed description of the invention
Fig. 1 is the structural block diagram of the far field speech collecting system of traditional intelligence TV.
Fig. 2 is a kind of structural block diagram of the utility model；
Fig. 3 is the structural block diagram of embodiment.
Specific embodiment
The utility model is directed to a kind of far field speech collecting system for smart television, to for smart television
Voice recognition unit acquires user speech, and simplifies speech collecting system simultaneously and do not have as a result, as shown in Fig. 2, picking up including far field
Sound microphone array strake, TV AV interface and TV SOC chip, the far field pickup microphone array board connect with the TV AV
Mouth electrical connection, the TV AV interface are electrically connected with the TV SOC chip.
Since pickup digital microphone array and pickup simulation microphone array are two kinds of pickup microphone array possible
State, therefore in the utility model, the additional power supply module of digital microphone can be used in the far field pickup microphone array board,
And/or the voice signal of pickup is converted to by digital letter using the additional power supply module of simulation microphone and ADC analog-to-digital conversion module
Number output, can be communicated by FFC line or other connection wiring harnesses between far field pickup microphone array board and AV interface.
Specifically, the far field pickup microphone array board can use audio digital signals array in the utility model,
To which the far field pickup microphone array board includes far field pickup digital microphone array, the far field pickup digital microphone
Array is electrically connected with the TV AV interface；
The far field pickup microphone array board can also use analog voice signal array, thus the far field pickup wheat
Gram wind array board includes far field pickup simulation microphone array and ADC analog-to-digital conversion module；The far field pickup simulates microphone
Array is electrically connected with ADC analog-to-digital conversion module, and the ADC analog-to-digital conversion module is electrically connected with the TV AV interface；
The far field pickup microphone array board can also be using audio digital signals array and analog voice signal simultaneously
Array, thus far field pickup microphone array board includes far field pickup digital microphone array, far field pickup simulation microphone array
Column and ADC analog-to-digital conversion module；The far field pickup simulation microphone array is electrically connected with ADC analog-to-digital conversion module, the ADC
Analog-to-digital conversion module, the far field pickup digital microphone array are electrically connected with the TV AV interface simultaneously, as shown in Figure 3.
In the utility model, the far field pickup microphone array board may be provided at TV left speaker and right side loudspeaking
On the one hand the middle of device is more conform with the interaction habits that user sees TV, the sound on the other hand from left and right sides loudspeaker
Influence of the sound interference to each microphone is than more consistent；Microphone array includes diamylose, four wheat of bar shaped and several forms of six wheats, comprehensive
It closes and considers that LCD TV design and speech performance etc. the utility model preferably use four wheat array of bar shaped；Far field pickup
The voice signal of microphone array strake acquisition includes voice, ambient sound and TV the machine sound, far field pickup digital microphone
PDM signal return can be directly exported after wind array board collected sound signal to TV SOC chip, far field pickup simulates microphone array
Strake collects and is converted into digital signal (such as PCM signal or I2S signal) loopback by analog-to-digital conversion module after voice signal
To TV SOC chip, TV SOC chip passes through the digital signal that AV interface far field pickup microphone array board exports, complete
At the acquisition of voice signal；Later, television set the machine voice signal can be separated inside TV SOC chip, far field pickup wheat
Gram collected the machine voice signal of wind array board is adjusted by power amplifier EQ parameter, with the machine sound in master chip inside television equipment
Sound signal is consistent, so can carry out complete echo cancellor to reference signal, obtains pure voice and ambient sound message
Software algorithm processing is carried out after number again, it is clean including being obtained after the processing such as auditory localization, Wave beam forming and noise Reverberation Rejection
Human voice signal executes phase after the speech engine built in LCD TV end carries out speech recognition and natural language processing scheduling algorithm
The phonetic order answered.Since reference signal echo cancellor is thorough, then cooperate a series of noise reduction filtering algorithms of software, so that voice is believed
It number can be accurately identified, greatly improve far field sound effect, the utility model increases at reference signal acquisition without additional
Module is managed, system structure is simplified.
Embodiment
Embodiment provides a kind of far field speech collecting system for smart television, as shown in figure 3, including far field pickup wheat
Gram wind array board, AV interface and LCD TV SOC chip, the far field pickup microphone array board are electrically connected with AV interface, AV
Interface is electrically connected with LCD TV SOC chip.
The far field pickup microphone array board includes power supply module, far field pickup digital microphone array, far field pickup
Simulate microphone array and ADC analog-to-digital conversion module；The far field pickup simulation microphone array and ADC analog-to-digital conversion module connect
It connecing, the ADC analog-to-digital conversion module, the far field pickup digital microphone array are electrically connected with the TV AV interface simultaneously,
It can be communicated by FFC line or other connection wiring harnesses between far field pickup microphone array board and AV interface.
In the present embodiment, the far field pickup microphone array board is arranged in LCD TV left speaker and right side loudspeaking
The middle of device, the microphone array on the pickup microphone array board of far field are classified as four wheat array of bar shaped.
System work when, the voice signal that far field pickup microphone array board acquires first include voice, ambient sound with
And TV the machine sound, PDM signal return is directly exported after the pickup digital microphone array board collected sound signal of far field to electricity
Depending on SOC chip, pickup simulation microphone array strake in far field is converted into counting after collecting voice signal by ADC analog-to-digital conversion module
Word signal (PCM signal or I2S signal) is transmitted back to TV SOC chip, and TV SOC chip passes through AV interface far field pickup wheat
The digital signal of gram wind array board output, completes the acquisition of voice signal；Later, by television set sheet inside TV SOC chip
The separation of machine voice signal, the collected the machine voice signal of far field pickup microphone array board are adjusted by power amplifier EQ parameter, with
The machine voice signal is consistent in master chip inside television equipment, so complete echo cancellor can be carried out to reference signal,
Software algorithm processing, including auditory localization, Wave beam forming and noise are carried out again after obtaining pure voice and environmental sound signal
Reverberation Rejection etc. processing after obtain clean human voice signal, by built in LCD TV end speech engine carry out speech recognition and
Corresponding phonetic order is executed after natural language processing scheduling algorithm.Since reference signal echo cancellor is thorough, then cooperate software one
Serial noise reduction filtering algorithm, enables human voice signal to be accurately identified, and greatly improves far field sound effect.
Claims (6)
1. being used for the far field speech collecting system of smart television, which is characterized in that including far field pickup microphone array board, TV
AV interface and TV SOC chip, the far field pickup microphone array board are electrically connected with the TV AV interface, the TV AV
Interface is electrically connected with the TV SOC chip.
2. being used for the far field speech collecting system of smart television as described in claim 1, which is characterized in that the far field pickup
The middle of TV left speaker and right speaker is arranged in microphone array strake.
3. being used for the far field speech collecting system of smart television as described in claim 1, which is characterized in that the far field pickup
Microphone array on microphone array strake is classified as four wheat array of bar shaped.
4. being used for the far field speech collecting system of smart television as described in claim 1, which is characterized in that the far field pickup
Microphone array strake includes far field pickup digital microphone array, the far field pickup digital microphone array and the TV AV
Interface electrical connection.
5. being used for the far field speech collecting system of smart television as described in claim 1, which is characterized in that the far field pickup
Microphone array strake includes far field pickup simulation microphone array and ADC analog-to-digital conversion module；The far field pickup simulates Mike
Wind array is electrically connected with ADC analog-to-digital conversion module, and the ADC analog-to-digital conversion module is electrically connected with the TV AV interface.
6. being used for the far field speech collecting system of smart television as described in claim 1, which is characterized in that the far field pickup
Microphone array strake includes far field pickup digital microphone array, far field pickup simulation microphone array and ADC analog-to-digital conversion mould
Block；Far field pickup simulation microphone array is electrically connected with ADC analog-to-digital conversion module, the ADC analog-to-digital conversion module, described
Far field pickup digital microphone array is electrically connected with the TV AV interface simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821668276.7U CN208691406U (en) | 2018-10-15 | 2018-10-15 | Far field speech collecting system for smart television |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821668276.7U CN208691406U (en) | 2018-10-15 | 2018-10-15 | Far field speech collecting system for smart television |
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| CN208691406U true CN208691406U (en) | 2019-04-02 |
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| CN201821668276.7U Active CN208691406U (en) | 2018-10-15 | 2018-10-15 | Far field speech collecting system for smart television |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110097891A (en) * | 2019-04-22 | 2019-08-06 | 广州视源电子科技股份有限公司 | A kind of microphone signal processing method, device, equipment and storage medium |
| CN110324759A (en) * | 2019-06-12 | 2019-10-11 | 深圳市金锐显数码科技有限公司 | Voice sound equipment pickup circuit and device |
| CN113014978A (en) * | 2021-02-18 | 2021-06-22 | 四川长虹电器股份有限公司 | Method, computer equipment and storage medium for improving far-field voice activation rate of television |
| CN113286182A (en) * | 2021-04-02 | 2021-08-20 | 福州智象信息技术有限公司 | Method and system for eliminating echo between TV and sound pickup peripheral |
-
2018
- 2018-10-15 CN CN201821668276.7U patent/CN208691406U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110097891A (en) * | 2019-04-22 | 2019-08-06 | 广州视源电子科技股份有限公司 | A kind of microphone signal processing method, device, equipment and storage medium |
| CN110097891B (en) * | 2019-04-22 | 2022-04-12 | 广州视源电子科技股份有限公司 | Microphone signal processing method, device, equipment and storage medium |
| CN110324759A (en) * | 2019-06-12 | 2019-10-11 | 深圳市金锐显数码科技有限公司 | Voice sound equipment pickup circuit and device |
| CN113014978A (en) * | 2021-02-18 | 2021-06-22 | 四川长虹电器股份有限公司 | Method, computer equipment and storage medium for improving far-field voice activation rate of television |
| CN113286182A (en) * | 2021-04-02 | 2021-08-20 | 福州智象信息技术有限公司 | Method and system for eliminating echo between TV and sound pickup peripheral |
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