CN103428593A - Device for collecting audio signals based on loudspeaker - Google Patents
Device for collecting audio signals based on loudspeaker Download PDFInfo
- Publication number
- CN103428593A CN103428593A CN2012101535692A CN201210153569A CN103428593A CN 103428593 A CN103428593 A CN 103428593A CN 2012101535692 A CN2012101535692 A CN 2012101535692A CN 201210153569 A CN201210153569 A CN 201210153569A CN 103428593 A CN103428593 A CN 103428593A
- Authority
- CN
- China
- Prior art keywords
- audio signal
- loud speaker
- audio
- loudspeaker
- unit
- Prior art date
- 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.)
- Granted
Links
Images
Abstract
The invention provides a device for collecting audio signals based on a loudspeaker. The device for collecting the audio signals based on the loudspeaker at least comprises the loudspeaker, an audio frequency acquiring unit, a filter unit and an audio signal processing unit, wherein the audio frequency acquiring unit is connected with the loudspeaker and used for acquiring audio signals generated by the loudspeaker due to vibration, the filter unit is connected with the audio frequency acquiring unit and used for eliminating audio signals and echo signals, the audio signals and the echo signals are in the audio signals output by the audio frequency acquiring unit and are played by the loudspeaker, the audio signal processing unit is connected with the filter unit and used for processing the audio signals output by the filter unit and then outputting the audio signals to an audio frequency transmitting device. The device for collecting the audio signals based on the loudspeaker has the advantages that a microphone does not need to be arranged, the audio signals are collected directly based on the loudspeaker, the function of the loudspeaker and the function of the microphone are combined on one device, and the device for collecting the audio signals based on the loudspeaker is simple in structure and convenient for users to carry.
Description
Technical field
The present invention relates to the Audio Signal Processing field, particularly relate to a kind of device that gathers audio signal based on loud speaker.
Background technology
Existing loud speaker just is used for playing audio signal, gathers audio signal by completing such as devices such as microphones.And along with the develop rapidly of network, increasing people starts to come and relatives or friend's chat by network, when they chat usually or wear the earphone that is provided with microphone, perhaps directly with sound equipment, play sound, re-use microphone and gather sound, so independently two devices, make user's very inconvenience in use, especially for some, pursues the people of quality of the life; In addition, for portable sets such as many notebooks, if the user also needs to carry microphone and microphone etc. in use, very inconvenience especially.
Therefore, can audio plays can gather the integration apparatus of audio frequency again in the urgent need to a kind of simultaneously.
Summary of the invention
The shortcoming of prior art, the object of the present invention is to provide a kind of device that gathers audio signal based on loud speaker in view of the above, to realize and the same or analogous function of microphone.
Reach for achieving the above object other relevant purposes, the invention provides a kind of device that gathers audio signal based on loud speaker, it at least comprises:
Loud speaker;
The audio frequency acquiring unit be connected with described loud speaker, the audio signal produced because of vibration for obtaining described loud speaker;
Filter unit, connect described audio frequency acquiring unit, for eliminating the audio signal of being play by described loud speaker and the echo signal of the audio signal that described audio frequency acquiring unit exports; And
Audio signal processing unit, be connected with described filter unit, after being processed for the audio signal that described filter unit is exported, exports voiceband facility to.
Preferably, the described device that gathers audio signal based on loud speaker also comprises: power amplification unit, send into described loud speaker after will audio signal to be played amplifying.
Preferably, described audio frequency acquiring unit comprises the equalizing circuit that connects described power amplification unit output; More preferably, described equalizing circuit comprises resistance.
As mentioned above, the device that gathers audio signal based on loud speaker of the present invention, without configuration miaow head, directly gathers telephone user's voice signal by loud speaker, realize thus the function of microphone based on single loud speaker.
The accompanying drawing explanation
Fig. 1 is shown as the device schematic diagram that gathers audio signal based on loud speaker of the present invention.
Fig. 2 is shown as the preferred schematic diagram that gathers the device of audio signal based on loud speaker of the present invention.
The element numbers explanation
1 gathers the device of audio signal based on loud speaker
11 loud speakers
12 audio frequency acquiring units
121 equalizing circuits
13 filter units
14 audio signal processing units
15 power amplification units
2 computers
Embodiment
Below by particular specific embodiment explanation embodiments of the present invention, person skilled in the art scholar can understand other advantages of the present invention and effect easily by the disclosed content of this specification.
Refer to Fig. 1 to Fig. 2.Notice, appended graphic the illustrated structure of this specification, ratio, size etc., equal contents in order to coordinate specification to disclose only, understand and read for person skilled in the art scholar, not in order to limit the enforceable qualifications of the present invention, therefore the technical essential meaning of tool not, the adjustment of the modification of any structure, the change of proportionate relationship or size, not affecting under the effect that the present invention can produce and the purpose that can reach, all should still drop on disclosed technology contents and obtain in the scope that can contain.Simultaneously, in this specification, quote as " on ", D score, " left side ", " right side ", " centre " reach the term of " " etc., also only for ease of understanding of narrating, but not in order to limit the enforceable scope of the present invention, the change of its relativeness or adjustment, under without essence change technology contents, when also being considered as the enforceable category of the present invention.
As shown in the figure, the invention provides a kind of device that gathers audio signal based on loud speaker.The described device 1 that gathers audio signal based on loud speaker comprises: loud speaker 11, audio frequency acquiring unit 12, filter unit 13, and audio signal processing unit 14.
Described loud speaker 11 is a kind of electro-acoustic transducer device, the audio frequency electric energy is by electromagnetism, piezoelectricity or electrostatic effect, make its cone or diaphragm vibration and produce resonance (sympathetic response) with ambient air and sound, therefore, when the sound sources such as voice such as the people are arranged in the residing environment of described loud speaker 11, this sound source can make cone or the diaphragm vibration-generating of described loud speaker 11, thus, the vibration signal that described loud speaker 11 can cone or diaphragm occur because of this sound source based on the electromagnetic conversion principle is converted to corresponding audio signal; In addition, described loud speaker 11 can also the audio signal provided such as audio signal generators such as computers be provided.For example, as shown in Figure 1, described loud speaker 11 can will be play from the audio signal of computer 2.
Described audio frequency acquiring unit 12 is connected with described loud speaker 11, the audio signal produced because of vibration for obtaining described loud speaker 11.
It should be appreciated by those skilled in the art that the operation principle based on loud speaker 11, described audio frequency acquiring unit 12 directly connects the input of described loud speaker 11, can obtain the audio signal that described loud speaker 11 produces because of vibration, specifically as shown in Figure 1.
Preferably, described audio frequency acquiring unit 12 can comprise resistance or amplifier circuit for sound frequency signal etc.
Described filter unit 13 connects described audio frequency acquiring unit 12, for eliminating audio signal and the echo signal play by described loud speaker 11 of the audio signal that described audio frequency acquiring unit 12 exports.
Preferably, described filter unit 13 can comprise subtraction circuit and echo cancellation circuit coupling, for example, an input of subtraction circuit connects the output of described audio frequency acquiring unit 12, the input that another input connects described loud speaker 11, thus, the audio signal of this subtraction circuit output no longer comprises such as computer 2 equipment such as grade and offers described loud speaker 11 so that the audio signal that described loud speaker 11 is play; Simultaneously, after the reflection of audio signal based on barriers such as walls of playing due to described loud speaker 11, this echo signal be reflected back can make the cone of described loud speaker 11 or diaphragm again vibrate, and then described loud speaker 11 based on this again vibrate can output corresponding echo signal, eliminate this echo signal therefore described echo cancellation circuit coupling is set; Have, when described loud speaker 11 gathers sound source, this sound source also can produce echo because of the reflection of barrier etc. again, and then described loud speaker 11 also can gather the echo signal of this sound source, therefore described echo cancellation circuit coupling is also for eliminating the echo signal of this sound source.
It should be noted that, those skilled in the art should understand that this echo cancellation circuit coupling, for example, the echo cancellation circuit coupling comprised in microphone etc., therefore be not described in detail in this.
Described audio signal processing unit 14 is connected with described filter unit 13, after being processed for the audio signal that described filter unit 13 is exported, exports voiceband facility to.
Particularly, the audio signal that described audio signal processing unit 14 is exported described filter unit 13 is processed, so that described voiceband facility can be identified and carry out subsequent treatment.Therefore, it should be appreciated by those skilled in the art that the processing mode that audio signal that 14 pairs of described filter units 13 of described audio signal processing unit are exported is processed determines based on described voiceband facility.Wherein, described voiceband facility comprises the equipment of any energy transmission of audio signal, preferably, includes but not limited to: computer, smart mobile phone, the equipment etc. of televising.For example, computer 2 as shown in Figure 1.
Preferably, described audio signal processing unit 14 is with existing same or similar such as the audio frequency processing circuit in microphone, microphone etc., therefore be not described in detail in this.
As a kind of optimal way, the described device 1 that gathers audio signal based on loud speaker also comprises: power amplification unit 15, as shown in Figure 2.
Described power amplification unit 15 is sent into described loud speaker 11 after audio signal to be played is amplified.
It should be noted that, those skilled in the art should understand described power amplification unit, for example, and the power amplifier that home theater comprises; Again for example, the power amplification circuit comprised in stereo set etc., therefore no longer described in detail described power amplification unit at this.
As another kind of optimal way, described audio frequency acquiring unit 12 comprises the equalizing circuit 121 be connected with power amplification unit 15, as shown in Figure 2.
Due to for the less loud speaker 11 of driving impedance, the output impedance of power amplification unit 15 is usually less, by avoiding loud speaker 11 to be absorbed by power amplification unit 15 because of the tone currents signal that vibration produces, therefore set up equalizing circuit 121 between power amplification unit 15 and loud speaker 11, to avoid too much power loss.
Preferably, described equalizing circuit 121 can adopt resistance etc. to realize.
The user A of below take carries out voice call as example by the device 1 that gathers audio signal based on loud speaker that is connected to computer 2 with user B, and the course of work of the device 1 that gathers audio signal based on loud speaker is described in detail:
At first, user A tells about in the process of dialog context of self, the cone of described loud speaker 11 or diaphragm are addressed this because of saying of user A and are told about produced echo signal vibration-generating, thereby output comprises the audio signal X1 of echo signal accordingly to audio frequency acquiring unit 12, this audio frequency acquiring unit 12 directly or after amplifying is sent into described filter unit 13 again with the filtering echo signal, send into computer 2 after being processed by audio signal processing unit 14 more subsequently, so that described computer 2 is by being transferred to the verbal system that user B is used such as network etc., then, tell about self corresponding reply content at user B based on telling about of user A, the verbal system that user B is used gathers this reply content and forms corresponding restoring audio signal, and pass again this restoring audio signal back described computer 2, described computer 2 is sent into described loud speaker 11 after described restoring audio signal is processed, thereby make the cone of described loud speaker 11 or diaphragm vibrate to play out restoring audio signal, simultaneously, the restoring audio signal that vibrates to play due to cone or the diaphragm of described loud speaker 11 can be obtained by described audio frequency acquiring unit 12, this audio frequency acquiring unit 12 can be sent the restoring audio signal obtained into filter unit 13, the restoring audio signal that this filter unit 13 will obtain from the input of described loud speaker 11 from the restoring audio signal of audio frequency acquiring unit 12 and self subtracts each other, this filter unit 13 can not exported restoring audio signal to audio signal processing unit 14, in addition, because the restoring audio signal of playing can produce echo signal, correspondingly, this echo signal is sent into audio frequency acquiring unit 12 after being gathered by loud speaker 11, subsequently also can 13 filtering of filtered unit, therefore, the loud speaker 11 of device 1 based on single that gathers audio signal based on loud speaker can playing audio signal, also can gather audio signal, collection is play and is gathered and all over the body, facilitate users.
In sum, the device of audio signal that gathers based on loud speaker of the present invention is without configuration miaow head, directly by loud speaker, gather telephone user's voice signal, thereby, device of the present invention has the function of playback and recording concurrently, can be used as loudspeaker and microphone uses, and can be applicable to family's intercom system, burglary-resisting system, and supervisory control system, with respect to prior art, its advantage comprises:
1. due to without microphone and drive circuit thereof, simplified the design of portable equipment;
2. simple in structure, save volume, the convenient installation and production;
3. in the voice call application, can effectively eliminate echo, improve voice call quality.
So the present invention has effectively overcome various shortcoming of the prior art and the tool high industrial utilization.
Above-described embodiment is illustrative principle of the present invention and effect thereof only, but not for limiting the present invention.Any person skilled in the art scholar all can, under spirit of the present invention and category, be modified or be changed above-described embodiment.Therefore, such as in affiliated technical field, have and usually know that the knowledgeable, not breaking away from all equivalence modifications that complete under disclosed spirit and technological thought or changing, must be contained by claim of the present invention.
Claims (4)
1. a device that gathers audio signal based on loud speaker, is characterized in that, the described device that gathers audio signal based on loud speaker at least comprises:
Loud speaker;
The audio frequency acquiring unit be connected with described loud speaker, the audio signal produced because of vibration for obtaining described loud speaker;
Filter unit, connect described audio frequency acquiring unit, for eliminating the audio signal of being play by described loud speaker and the echo signal of the audio signal that described audio frequency acquiring unit exports;
Audio signal processing unit, be connected with described filter unit, after being processed for the audio signal that described filter unit is exported, exports voiceband facility to.
2. the device that gathers audio signal based on loud speaker according to claim 1 characterized by further comprising: power amplification unit, send into described loud speaker after will audio signal to be played amplifying.
3. the device that gathers audio signal based on loud speaker according to claim 2, it is characterized in that: described audio frequency acquiring unit comprises the equalizing circuit that connects described power amplification unit output.
4. the device that gathers audio signal based on loud speaker according to claim 3, it is characterized in that: described equalizing circuit comprises resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210153569.2A CN103428593B (en) | 2012-05-15 | 2012-05-15 | The device of audio signal is gathered based on speaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210153569.2A CN103428593B (en) | 2012-05-15 | 2012-05-15 | The device of audio signal is gathered based on speaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103428593A true CN103428593A (en) | 2013-12-04 |
| CN103428593B CN103428593B (en) | 2016-07-06 |
Family
ID=49652647
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210153569.2A Active CN103428593B (en) | 2012-05-15 | 2012-05-15 | The device of audio signal is gathered based on speaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103428593B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106101927A (en) * | 2016-06-29 | 2016-11-09 | 维沃移动通信有限公司 | A kind of acoustic signal processing method, chip and electronic equipment |
| CN106507242A (en) * | 2016-12-12 | 2017-03-15 | 捷开通讯(深圳)有限公司 | A kind of audio devices and terminal |
| CN106791131A (en) * | 2016-12-28 | 2017-05-31 | 广东欧珀移动通信有限公司 | Control method and control device |
| CN108391206A (en) * | 2018-03-30 | 2018-08-10 | 广东欧珀移动通信有限公司 | Signal processing method, device, terminal, earphone and readable storage medium storing program for executing |
| CN108521621A (en) * | 2018-03-30 | 2018-09-11 | 广东欧珀移动通信有限公司 | Signal processing method, device, terminal, earphone and readable storage medium storing program for executing |
| CN112017649A (en) * | 2020-09-02 | 2020-12-01 | 上海仙视电子科技有限公司 | Audio processing method and device, electronic equipment and readable storage medium |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1414814A (en) * | 2001-10-24 | 2003-04-30 | 三星电机株式会社 | Bidirectional loudspeake of mobile phone |
| KR20040062387A (en) * | 2002-12-30 | 2004-07-07 | 주식회사 삼부커뮤닉스 | multi-functional speaker |
| CN201100959Y (en) * | 2006-06-28 | 2008-08-13 | 胡强 | Bone induction audio bidirectional receiving/transmission device |
| CN201216010Y (en) * | 2008-03-26 | 2009-04-01 | 上海华平信息技术股份有限公司 | Microphone with echo eliminating function equipped with USB sound card and loudspeaker |
-
2012
- 2012-05-15 CN CN201210153569.2A patent/CN103428593B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1414814A (en) * | 2001-10-24 | 2003-04-30 | 三星电机株式会社 | Bidirectional loudspeake of mobile phone |
| KR20040062387A (en) * | 2002-12-30 | 2004-07-07 | 주식회사 삼부커뮤닉스 | multi-functional speaker |
| CN201100959Y (en) * | 2006-06-28 | 2008-08-13 | 胡强 | Bone induction audio bidirectional receiving/transmission device |
| CN201216010Y (en) * | 2008-03-26 | 2009-04-01 | 上海华平信息技术股份有限公司 | Microphone with echo eliminating function equipped with USB sound card and loudspeaker |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106101927A (en) * | 2016-06-29 | 2016-11-09 | 维沃移动通信有限公司 | A kind of acoustic signal processing method, chip and electronic equipment |
| CN106507242A (en) * | 2016-12-12 | 2017-03-15 | 捷开通讯(深圳)有限公司 | A kind of audio devices and terminal |
| CN106791131A (en) * | 2016-12-28 | 2017-05-31 | 广东欧珀移动通信有限公司 | Control method and control device |
| CN108391206A (en) * | 2018-03-30 | 2018-08-10 | 广东欧珀移动通信有限公司 | Signal processing method, device, terminal, earphone and readable storage medium storing program for executing |
| CN108521621A (en) * | 2018-03-30 | 2018-09-11 | 广东欧珀移动通信有限公司 | Signal processing method, device, terminal, earphone and readable storage medium storing program for executing |
| US10482871B2 (en) | 2018-03-30 | 2019-11-19 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Method for processing signals, terminal device, and non-transitory computer-readable storage medium |
| CN108521621B (en) * | 2018-03-30 | 2020-01-10 | Oppo广东移动通信有限公司 | Signal processing method, device, terminal, earphone and readable storage medium |
| CN112017649A (en) * | 2020-09-02 | 2020-12-01 | 上海仙视电子科技有限公司 | Audio processing method and device, electronic equipment and readable storage medium |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103428593B (en) | 2016-07-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104521247B (en) | Bluetooth headset hearing aid and anti-noise method and apparatus | |
| CN103428593B (en) | The device of audio signal is gathered based on speaker | |
| CN104935742B (en) | Communication terminal and the method for improving its tonequality under handset mode | |
| CN201590889U (en) | Stereosonic bluetooth headset | |
| CN102099852A (en) | Noise cancellation system | |
| CN110521115A (en) | The amplifier unit of sound transducer and sound generation unit | |
| CN105554664A (en) | Headset based sound processing method and apparatus, and headset | |
| GB2551799A (en) | Wireless headphone system | |
| CN108510997A (en) | Electronic equipment and echo cancel method applied to electronic equipment | |
| CN203968327U (en) | A kind of exempt from extract carry out low coverage dialogue earphone | |
| JP5417821B2 (en) | Audio signal playback device, mobile phone terminal | |
| CN203351193U (en) | Portable karaoke Bluetooth headset capable of monitoring MIC signal | |
| CN206117976U (en) | Intelligent sound box | |
| CN105187993A (en) | Three-dimensional stereo headphone device and recovery method | |
| WO2017197742A1 (en) | Method and device for audio processing | |
| CN202798855U (en) | Microphone circuit module with reverberation and monitoring functions | |
| CN104038860A (en) | Non-removable close-distance voice listening method and headset | |
| WO2021258913A1 (en) | Echo cancellation device and method, sound pickup device and method, and terminal | |
| CN109348385A (en) | A kind of microphone and electronic equipment with echo sound-attenuating system | |
| CN205283527U (en) | Words system that receives that send of quick -witted bluetooth of arranging that half -duplex is wireless | |
| CN203883965U (en) | Pulse detection headphone, terminal and system | |
| CN208299968U (en) | A kind of moving-iron type active noise reduction earphone | |
| CN204669602U (en) | Speech recognition equipment, voice sound system and speech communication system | |
| CN104902402A (en) | Voice recognition device, voice control system and voice communication system | |
| CN206472265U (en) | The In-Ear electric competing earphone that a kind of moving-coil is combined with dynamic iron |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |