CN209184781U - A kind of Baffle Box of Bluetooth for eliminating echo - Google Patents
A kind of Baffle Box of Bluetooth for eliminating echo Download PDFInfo
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- CN209184781U CN209184781U CN201920120787.3U CN201920120787U CN209184781U CN 209184781 U CN209184781 U CN 209184781U CN 201920120787 U CN201920120787 U CN 201920120787U CN 209184781 U CN209184781 U CN 209184781U
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Abstract
The utility model relates to the Baffle Box of Bluetooth that one kind can eliminate echo, echo processor is eliminated by voice, it is connected respectively with Bluetooth architecture and microphone array array structure, the postpones signal in speech sound waves signal for eliminating the acquisition of microphone array array structure, the speech sound waves signal that has no reply is obtained, and the speech sound waves signal that will have no reply is transmitted to Bluetooth architecture；Postpones signal is echo；Voice eliminates echo processor, is also sequentially connected and connects with audio transformational structure, loudspeaker, is converted to the voice analog signal that has no reply by audio transformational structure for that will have no reply speech sound waves signal, loudspeaker is converted into sound and plays out；Microphone array array structure is done voice data tracking to pick up, the problem of reducing the time difference in audio signal transmission, and voice data is transmitted to voice elimination echo processor again and does echo cancellation, the sound of echo cancellation is transmitted to other side by the mobile terminal being connected with Bluetooth architecture again, ensure that the clear of sound in voice communication.
Description
Technical field
The utility model relates to Baffle Box of Bluetooth technical fields, and in particular to one kind can eliminate the Baffle Box of Bluetooth of echo.
Background technique
It is constantly progressive with the development of science and technology with social, continuous improvement of people's living standards, the function of speaker is therewith
Continuous development is got up, and traditional speaker connects mobile phone, plate, apparatus such as computer by wired mode, later wireless communication technique
It rises, wireless blue tooth speaker starts to occur, and can pass through the indigo plant of the mobile terminal devices such as Bluetooth technology and mobile phone, plate, computer
Tooth matching is attached, and the voice transmissions such as music, call of mobile terminal device to speaker play out.In voice communication,
Especially in conference voice call, Baffle Box of Bluetooth is even more important, and is amplified sound by Baffle Box of Bluetooth, makes each in meeting room
A corner can be heard.But when communication process uses Baffle Box of Bluetooth, it often will appear echo phenomenon, this is because a side is logical
It is transferred on the microphone of other side after crossing microphone talk, the speaker of other side plays out sound, the sound then played and quilt
The microphone of other side, which collects, returns to oneself, echo phenomenon there are strong influence call quality and effect.Tradition disappears
Except one piece of integrated chip is arranged in the speaker of echo in circuit in speaker, transmits a signal in integrated chip, voice is believed
It compares and is eliminated with the signal of playing sound in number, but because compared in voice signal with the signal of playing sound
When elimination, the audio signal of voice the problems such as there are the time differences in transmission, and there is no special microphones for existing speaker
Signal carry out the mobile cooperation of real-time tracking speaker to realize echo cancellor, cannot it is possible that in the presence of very big time error
Accomplish the effect for eliminating echo in real time.
Utility model content
In view of this, echo can be eliminated by providing one kind the purpose of the utility model is to overcome the deficiencies in the prior art
Baffle Box of Bluetooth does voice data tracking by using microphone array array structure and picks up, reduces the time in audio signal transmission
The problem of difference, and voice data is transmitted to voice elimination echo processor again and does echo cancellation, the sound of echo cancellation passes through again
The mobile mobile terminal being connected with Bluetooth architecture is transmitted to other side, ensure that the clear of sound in voice communication.
In order to achieve the above object, the utility model adopts the following technical solution:
A kind of Baffle Box of Bluetooth for eliminating echo, comprising: sound box body, and the microphone array inside sound box body is set
Array structure, voice eliminate echo processor, audio transformational structure, Bluetooth architecture, loudspeaker；
Microphone array array structure, for acquiring the speech sound waves signal of user's sending；
Voice eliminates echo processor, is connected respectively with Bluetooth architecture, microphone array array structure, for receiving microphone
The speech sound waves signal that array structure is sent eliminates the postpones signal in speech sound waves signal, obtains the speech sound waves letter that has no reply
Number, and the speech sound waves signal that will have no reply is sent to Bluetooth architecture and transmits the speech sound waves signal that has no reply；Postpones signal is back
Sound；
Voice eliminates echo processor, is also connected with audio transformational structure, for the speech sound waves signal hair that will have no reply
It send to audio transformational structure；
Audio transformational structure, is connected with loudspeaker, for receiving have no reply speech sound waves signal and the sound wave that will have no reply
Signal is converted to the voice analog signal that has no reply and is sent to loudspeaker；
Loudspeaker, for receiving the voice analog signal that has no reply of audio transformational structure transmission, and the voice mould that will have no reply
Quasi- signal is converted to sound and plays out.
Further, further includes: power amplifier；
Power amplifier is set to inside sound box body, is connected respectively with audio transformational structure, loudspeaker, and being used for will
The voltage of voice analog signal of having no reply amplifies, and have no reply voice analog signal after being amplified, and will be after amplification without returning
Sound voice analog signal is converted to voice signal by loudspeaker and plays out.
Further, further includes: indicator light；
Indicator light is set to sound box body lateral wall, is connected with Bluetooth architecture, is used to indicate the connection shape of Bluetooth architecture
State.
Further, Bluetooth architecture specifically includes: switch block, for controlling the connection status of Bluetooth architecture.
Preferably, indicator light is LED array.
Optionally, it is XVF3000 sequence of speech processor that voice, which eliminates echo processor,.
Optionally, Bluetooth architecture is AK1056D bluetooth mould group.
Optionally, audio transformational structure is HT5010A module.
Optionally, LED array is SK6812 SIDE-A RGB LED array.
Optionally, power amplifier is HT6872 power amplifier.
Technical solution provided by the present application can include the following benefits:
One kind of the application can eliminate the Baffle Box of Bluetooth of echo, including sound box body, sound box body are internally provided with Mike
Wind array structure, voice eliminate echo processor, audio transformational structure, Bluetooth architecture, loudspeaker；Voice eliminates echo processing
Device is connected with Bluetooth architecture and microphone array array structure respectively, the speech sound waves for microphone array array structure acquisition
Signal, and the postpones signal in speech sound waves signal is eliminated by voice enhancement algorithm, the speech sound waves signal that has no reply is obtained, and
The speech sound waves that will have no reply signal is transmitted to Bluetooth architecture；The postpones signal is echo；Voice eliminates echo processor, also
It is sequentially connected and connects with audio transformational structure, loudspeaker, converted for speech sound waves signal will to be had no reply by audio transformational structure
For the voice analog signal that has no reply, and is converted to sound by the loudspeaker voice analog signal that will have no reply and plays out；This Shen
Voice data tracking please is done by using microphone array array structure to pick up, and reduces asking for the time difference in audio signal transmission
Topic, and voice data is transmitted to voice again eliminates echo processor and do echo cancellation, the sound of echo cancellation again by with bluetooth
The mobile terminal that structure is connected is transmitted to other side, ensure that the clear of sound in voice communication.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is the Baffle Box of Bluetooth structure chart that one kind that the utility model embodiment one provides can eliminate echo；
Fig. 2 is the Baffle Box of Bluetooth structure chart that one kind that the utility model embodiment two provides can eliminate echo.
Specific embodiment
To keep the purpose of this utility model, technical solution and advantage clearer, below by the technology to the utility model
Scheme is described in detail.Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than all
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are not before making creative work
Obtained all other embodiment is put, the range that the utility model is protected is belonged to.
Embodiment one
Fig. 1 is the Baffle Box of Bluetooth structure chart that one kind that the utility model embodiment one provides can eliminate echo；
As shown in Figure 1, the Baffle Box of Bluetooth that one kind of the present embodiment can eliminate echo includes:
A kind of Baffle Box of Bluetooth for eliminating echo, comprising:
Sound box body, and microphone array array structure 12 inside sound box body is set, voice eliminates echo processor 11,
Audio transformational structure 14, Bluetooth architecture 13, loudspeaker 15；
Microphone array array structure 12, for acquiring the speech sound waves signal of user's sending；
Voice eliminates echo processor 11, is connected respectively with Bluetooth architecture 13, microphone array array structure 12, for receiving
The speech sound waves signal that microphone array array structure 12 is sent eliminates the postpones signal in speech sound waves signal, obtains the language that has no reply
Sound acoustic signals, and the speech sound waves signal that will have no reply is sent to Bluetooth architecture 13 and transmits the speech sound waves signal that has no reply；Delay
Signal is echo；
Voice eliminates echo processor 11, is also connected with audio transformational structure 14, for the speech sound waves letter that will have no reply
Number it is sent to audio transformational structure 14；
Audio transformational structure 14 is connected with loudspeaker 15, speech sound waves signal and will have no reply for receiving to have no reply
Acoustic signals are converted to the voice analog signal that has no reply and are sent to loudspeaker 15；
Loudspeaker 15, for receiving the voice analog signal that has no reply of the transmission of audio transformational structure 14, and the language that will have no reply
Sound analog signal is converted to sound and plays out.
The present embodiment is by sound box body, and sound box body is internally provided with microphone array array structure, voice is eliminated at echo
Manage device, audio transformational structure, Bluetooth architecture, loudspeaker；Voice eliminate echo processor, respectively with Bluetooth architecture and microphone array
Array structure is connected, and eliminates for the speech sound waves signal of microphone array array structure acquisition, and by voice enhancement algorithm
Postpones signal in speech sound waves signal obtains the speech sound waves signal that has no reply, and the speech sound waves signal that will have no reply is transmitted to
Bluetooth architecture；Postpones signal is echo；Voice eliminates echo processor, is also sequentially connected with audio transformational structure, loudspeaker
It connects, the voice analog signal that has no reply is converted to by audio transformational structure for speech sound waves signal will to be had no reply, and by raising
The sound device voice analog signal that will have no reply is converted to sound and plays out；By using microphone array array structure do voice data with
The problem of track picks up, and reduces the time difference in audio signal transmission, and voice data is transmitted to voice again and eliminates echo processing
Device does echo cancellation, and the sound of echo cancellation is transmitted to other side by the mobile mobile terminal being connected with Bluetooth architecture again, guarantees
Sound is clear in voice communication.
Embodiment two
Fig. 2 is the Baffle Box of Bluetooth structure chart that one kind that the utility model embodiment two provides can eliminate echo；
As shown in Fig. 2, the Baffle Box of Bluetooth that one kind of the present embodiment can eliminate echo includes:
Sound box body, and microphone array array structure 22 inside sound box body is set, voice eliminates echo processor 21,
Audio transformational structure 24, Bluetooth architecture 23, loudspeaker 25；Voice eliminate echo processor 21, respectively with Bluetooth architecture 23, Mike
Wind array structure 22 is connected, and voice eliminates echo processor 21, is also connected with audio transformational structure 24, audio transformational structure
24, it is connected with loudspeaker 25.
Further, further includes: power amplifier 26；
Power amplifier 26, is set to inside sound box body, is connected respectively with audio transformational structure 24, loudspeaker 25,
For amplifying the voltage of voice analog signal after elimination postpones signal, obtains amplification and eliminate speech simulation after postpones signal
Signal, and the amplification voice analog signal that has no reply by loudspeaker 25 is converted to voice signal and is played out.
Power amplifier 26 (Power Amplifier, PA), is the amplifying circuit that can export high-power signal.One electricity
Multistage amplifier circuit is generally comprised in sub- equipment, the preamplifying circuit in addition to carrying out voltage amplification to small signal, output stage
Certain load is also generally driven, such as loudspeaker, relay, motor, instrument, deflection coil, antenna etc. drives these negative
Load requires certain power, it is therefore desirable to the power amplification circuit of energy amplified signal.Three in sinusoidal signal whole cycle
Situation is connected in pole pipe, and the working condition of power amplifier can be divided into Class A, Class B, class AB, Class C etc..
In addition, cellular power amplifier, it may be possible to refer to the base station power amplifier that wireless signal is gone out from Base Transmitter.
Sound box body, and microphone array array structure 22 inside sound box body is set, voice eliminates echo processor 21,
Audio transformational structure 24, Bluetooth architecture 23, loudspeaker 25；Voice eliminate echo processor 21, respectively with Bluetooth architecture 23, Mike
Wind array structure 22 is connected, and voice eliminates echo processor 21, is also connected with audio transformational structure 24, audio transformational structure
24, it is connected with loudspeaker 25.
Further, further includes: power amplifier 26:
Power amplifier 26, is set to inside sound box body, is connected respectively with audio transformational structure 24, loudspeaker 25,
For amplifying the voltage of voice analog signal after the elimination postpones signal sent, obtains amplification and eliminate language after postpones signal
Sound analog signal, and the amplification voice analog signal that has no reply by loudspeaker 25 is converted to voice signal and is played out.
Power amplifier 26 (Power Amplifier, PA), is the amplifying circuit that can export high-power signal.One electricity
Multistage amplifier circuit is generally comprised in sub- equipment, the preamplifying circuit in addition to carrying out voltage amplification to small signal, output stage
Certain load is also generally driven, such as loudspeaker 25, relay, motor, instrument, deflection coil, antenna etc. drives these
Load requires certain power, it is therefore desirable to the power amplification circuit of energy amplified signal.In sinusoidal signal whole cycle
The working condition of triode ON situation, power amplifier 26 can be divided into Class A, Class B, class AB, Class C etc..
In addition, cellular power amplifier, it may be possible to refer to the base station power amplifier that wireless signal is gone out from Base Transmitter.
Further, further includes: indicator light；
Indicator light is set to sound box body lateral wall, is connected with Bluetooth architecture 23, is used to indicate the company of Bluetooth architecture 23
Connect state.
Further indicator light is LED array 27.
Indicator light uses LED array 27, and LED array 27 is constituted using SK6812 SIDE-A RGB LED, logical for single line
Letter mode controls.
Optionally, it is XVF3000 sequence of speech processor that voice, which eliminates echo processor 21,.
XVF3000 sequence of speech processor provides most flexible and most cost-benefit online always in individual devices
Speech interface.XVF3000 sequence of speech processor includes voice enhancement algorithm, voice enhancement algorithm include adaptive beam at
It is mobile to track speaker with the signal from four microphones for shape, and high-performance full duplex acoustic echo is cooperated to eliminate.
XVF3000 speech processor can be transmitted by the control of usb data and USB interface or integrated circuit built-in audio bus
(Inter-IC Sound, I2S) and bidirectional two-line synchronous serial bus (Inter-Integrated Circuit, I2C)
Combination, be easily integrated with application processor or main PC machine, and that the free developing instrument of XMOS can be used is quick by developer
Add customized voice and audio processing.
Optionally, Bluetooth architecture 23 is AK1056D bluetooth mould group.
AK1056D bluetooth mould group realizes function of Bluetooth communication, realizes that local data passes through Bluetooth transmission.
Optionally, audio transformational structure 24 is HT5010A module.
Optionally, power amplifier 26 is HT6872 power amplifier 26.
The conversion of digital signal and analog signal is realized in audio D/A conversion using HT5010A audio transferring structure, and is adopted
With the power amplifier 26 of HT6872 realize 3W power be connected with audio transformational structure 24 will have no reply voice analog signal into
Row output.
Optionally, LED array 27 is SK6812 SIDE-A RGB LED array.
HT6872 power amplifier is a kind of low Electro Magnetic Compatibility, and anti-cutting top distortion, monophonic is exempted to filter class D sound
Frequency power amplifier, in 6.5 volts of power supplys, 10% total harmonic distortion plus noise distortion level (Total Harmonic
Distortion+Noise, THD+N), under 4 ohm of loading condition, the power of 4.7 watts of output, in all kinds of voice frequency terminal applications
It is middle to maintain high efficiency and the performance of match in excellence or beauty pure class A power amplifier and pure B power amplifier is provided.
The present embodiment is by sound box body, and sound box body is internally provided with microphone array array structure, voice is eliminated at echo
Manage device, audio transformational structure, Bluetooth architecture, loudspeaker；Voice eliminate echo processor, respectively with Bluetooth architecture and microphone array
Array structure is connected, and Bluetooth architecture uses AK1056D bluetooth mould group, and voice eliminates echo processor and uses XVF3000 series language
Sound processor；Voice eliminate echo processor, be also sequentially connected and connect with audio transformational structure, loudspeaker, on Bluetooth architecture also with
Indicator light is connected, and is used to indicate the connection status and sound of Bluetooth architecture, and indicator light uses LED array, checks convenient for user
The connection status of Bluetooth architecture；Audio transformational structure uses HT5010A module, and adds between audio transformational structure and loudspeaker
Enter power amplifier, power amplifier uses HT6872 power amplifier, further ensure that loudspeaker will have no reply simulation
Sound is clear when signal amplifies；It is spoken by the signal that XVF3000 sequence of speech processor includes four microphones to track
People is mobile, and cooperates the elimination of high-performance full duplex acoustic echo to do voice data tracking and pick up, and reduces in audio signal transmission
Time difference the problem of, the sound of echo cancellation is transmitted to other side by the mobile terminal being connected with Bluetooth architecture again, ensure that
Sound is clear in voice communication.
It is understood that same or similar part can mutually refer in the various embodiments described above, in some embodiments
Unspecified content may refer to the same or similar content in other embodiments.
It should be noted that term " first ", " second " etc. are used for description purposes only in the description of the present invention,
It is not understood to indicate or imply relative importance.In addition, in the description of the present invention, unless otherwise indicated, it is " more
It is a " meaning refer at least two.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is contained at least one embodiment or example of the utility model.In the present specification, to the schematic table of above-mentioned term
Stating may not refer to the same embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be
It can be combined in any suitable manner in any one or more embodiment or examples.
Although the embodiments of the present invention have been shown and described above, it is to be understood that above-described embodiment is
Illustratively, it should not be understood as limiting the present invention, those skilled in the art are in the scope of the utility model
Inside it can make changes, modifications, alterations, and variations to the above described embodiments.
Claims (10)
1. the Baffle Box of Bluetooth that one kind can eliminate echo characterized by comprising sound box body, and be arranged in the sound box body
Microphone array array structure, the voice of inside eliminate echo processor, audio transformational structure, Bluetooth architecture, loudspeaker；
The microphone array array structure, for acquiring the speech sound waves signal of user's sending；
The voice eliminates echo processor, is connected respectively with the Bluetooth architecture, the microphone array array structure, for connecing
The speech sound waves signal that the microphone array array structure is sent is received, the postpones signal in the speech sound waves signal is eliminated,
The speech sound waves signal that has no reply is obtained, and the speech sound waves signal that has no reply is sent to the Bluetooth architecture and transmits the nothing
Echo speech sound waves signal；The postpones signal is echo；
The voice eliminates echo processor, is also connected with the audio transformational structure, for by the voice sound that has no reply
Wave signal is sent to the audio transformational structure；
The audio transformational structure, is connected with the loudspeaker, for receiving the speech sound waves signal and by institute of having no reply
It states the acoustic signals that have no reply and is converted to the voice analog signal that has no reply and be sent to the loudspeaker；
The loudspeaker, for receiving the voice analog signal that has no reply described in the audio transformational structure transmission, and will be described
The voice analog signal that has no reply is converted to sound and plays out.
2. the Baffle Box of Bluetooth according to claim 1 for eliminating echo, which is characterized in that further include: power amplifier；
The power amplifier is set to inside the sound box body, respectively with the audio transformational structure, the loudspeaker phase
Connection, for amplifying the voltage of the voice analog signal that has no reply, have no reply voice analog signal after being amplified,
And the amplification voice analog signal that has no reply is converted to voice signal by the loudspeaker and played out.
3. the Baffle Box of Bluetooth according to claim 1 for eliminating echo, which is characterized in that further include: indicator light；
The indicator light is set to the sound box body lateral wall, is connected with the Bluetooth architecture, is used to indicate the bluetooth
The connection status of structure.
4. the Baffle Box of Bluetooth according to claim 1 for eliminating echo, which is characterized in that the Bluetooth architecture specifically wraps
It includes: switch block, for controlling the connection status of the Bluetooth architecture.
5. the Baffle Box of Bluetooth according to claim 3 for eliminating echo, which is characterized in that the indicator light is LED array.
6. the Baffle Box of Bluetooth according to claim 1 for eliminating echo, which is characterized in that the voice eliminates echo processing
Device is XVF3000 sequence of speech processor.
7. the Baffle Box of Bluetooth according to claim 1 for eliminating echo, which is characterized in that the Bluetooth architecture is
AK1056D bluetooth mould group.
8. the Baffle Box of Bluetooth according to claim 1 for eliminating echo, which is characterized in that the audio transformational structure is
HT5010A module.
9. the Baffle Box of Bluetooth according to claim 5 for eliminating echo, which is characterized in that the LED array is SK6812
SIDE-A RGB LED array.
10. the Baffle Box of Bluetooth according to claim 2 for eliminating echo, which is characterized in that the power amplifier is
HT6872 power amplifier.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920120787.3U CN209184781U (en) | 2019-01-24 | 2019-01-24 | A kind of Baffle Box of Bluetooth for eliminating echo |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920120787.3U CN209184781U (en) | 2019-01-24 | 2019-01-24 | A kind of Baffle Box of Bluetooth for eliminating echo |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114040303A (en) * | 2020-12-09 | 2022-02-11 | 深圳海翼智新科技有限公司 | Sound box system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114040303A (en) * | 2020-12-09 | 2022-02-11 | 深圳海翼智新科技有限公司 | Sound box system |
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