CN105450880A - Speech signal processing method and speech signal processing device - Google Patents
Speech signal processing method and speech signal processing device Download PDFInfo
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- CN105450880A CN105450880A CN201510770583.0A CN201510770583A CN105450880A CN 105450880 A CN105450880 A CN 105450880A CN 201510770583 A CN201510770583 A CN 201510770583A CN 105450880 A CN105450880 A CN 105450880A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M9/00—Arrangements for interconnection not involving centralised switching
- H04M9/08—Two-way loud-speaking telephone systems with means for conditioning the signal, e.g. for suppressing echoes for one or both directions of traffic
Abstract
Embodiments of the invention disclose a speech signal processing method and a speech signal processing device. According to the embodiments of the invention, the speaker of a mobile terminal is started when that the mobile terminal enters a hands-free call state is determined, the distance between the speaker mouth and an object in front of the speaker mouth is monitored, the echo is processed by a first echo elimination algorithm with higher echo suppression intensity if the distance is smaller than a preset threshold, and the echo is processed by a second echo elimination algorithm with lower echo suppression intensity if the distance is greater than the preset threshold. By implementing the scheme, the effect of echo suppression can be improved, and the call quality can be improved greatly.
Description
Technical field
The present invention relates to communication technical field, be specifically related to a kind of processing method and device of voice signal.
Background technology
Along with the development of the communication technology, mobile terminal, it is more and more universal that the equipment such as such as mobile phone also become, and it has become a part indispensable in people's life, and therefore, the performance how improving mobile terminal each side also receives the concern of people always.
Conveniently user uses, and existing mobile terminal generally all supports hand-free call function, and namely user is without the need to hand-held mobile terminal, but be directly placed on some object at mobile terminal, such as mobile terminal is placed on the table, and open loud speaker, then carry out voice communication.
To in the research and practice process of prior art, the present inventor finds, in the prior art, when mobile terminal is flat on some object, when such as desktop carries out hand-free call, because this object is as the reflection of desktop, a lot of echo signal can be produced and enter microphone, thus be easy to introduce hands-free echo, greatly affect communication effect.
Summary of the invention
The embodiment of the present invention provides a kind of processing method and device of voice signal, can suppress echo, improves communication effect.
The embodiment of the present invention provides a kind of processing method of voice signal, comprising:
When determining that mobile terminal enters hand-free call, start the loud speaker of mobile terminal to play voice signal;
Play mouth and loud speaker to loud speaker to play the distance of blocking object in mouth front and monitor;
If described distance is less than preset threshold value, then the first echo cancellation algorithm is utilized to process echo;
If described distance is more than or equal to preset threshold value, then utilize the second echo cancellation algorithm to process echo, described first echo cancellation algorithm suppresses the intensity of echo to be greater than the second echo cancellation algorithm.
Accordingly, the embodiment of the present invention also provides a kind of processing unit of voice signal, comprising:
Start unit, during for determining that mobile terminal enters hand-free call, starts the loud speaker of mobile terminal to play voice signal;
Monitoring means, the distance of blocking object for playing mouth front to loud speaker broadcasting mouth and loud speaker is monitored;
First processing unit, during for determining that described distance is less than preset threshold value at monitoring means, utilizes the first echo cancellation algorithm to process echo;
Second processing unit, during for determining that described distance is more than or equal to preset threshold value at monitoring means, utilizes the second echo cancellation algorithm to process echo, and described first echo cancellation algorithm suppresses the intensity of echo to be greater than the second echo cancellation algorithm.
The embodiment of the present invention is when determining that mobile terminal enters hand-free call, the loud speaker of mobile terminal can be started, and mouth and loud speaker are play to loud speaker play the distance of blocking object in mouth front and monitor, if this distance is less than preset threshold value, then utilize and suppress the first stronger echo cancellation algorithm of echo intensity to process echo, otherwise, if this distance is more than or equal to preset threshold value, then utilizes and suppress the second more weak echo cancellation algorithm of echo intensity to process echo; The program can select according to the concrete state of mobile terminal the mode processing echo flexibly, to eliminate echo better, therefore, can improve the inhibition of echo, greatly improve speech quality.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, below the accompanying drawing used required in describing embodiment is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those skilled in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the flow chart of the processing method of the voice signal that the embodiment of the present invention provides;
Fig. 2 is another flow chart of the processing method of the voice signal that the embodiment of the present invention provides;
Fig. 3 a is the structural representation of the processing unit of the voice signal that the embodiment of the present invention provides;
Fig. 3 b is another structural representation of the processing unit of the voice signal that the embodiment of the present invention provides.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those skilled in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
The embodiment of the present invention provides a kind of processing method and device of voice signal.To be described in detail respectively below.
Embodiment one,
The angle of the processing unit from voice signal is described by the present embodiment, and the processing unit of this voice signal specifically can be integrated in the equipment such as mobile terminal, and this mobile terminal can comprise the equipment such as mobile phone or panel computer.
A processing method for voice signal, comprising: when determining that mobile terminal enters hand-free call, starts the loud speaker of mobile terminal to play voice signal; Play mouth and loud speaker to loud speaker to play the distance of blocking object in mouth front and monitor; If this distance is less than preset threshold value, then the first echo cancellation algorithm is utilized to process echo; If this distance is more than or equal to preset threshold value, then utilize the second echo cancellation algorithm to process echo, this first echo cancellation algorithm suppresses the intensity of echo to be greater than the second echo cancellation algorithm.
As shown in Figure 1, the idiographic flow of the processing method of this voice signal can be as follows:
When 101, determining that mobile terminal enters hand-free call, start the loud speaker of mobile terminal to play voice signal.
Such as, when determining that terminal enters hand-free call, loud speaker process can be called, performing this loud speaker process to start loud speaker, and play voice signal by this loud speaker.
Wherein, before determining that mobile terminal enters hand-free call, can also comprise: obtain voice signal.
102, play mouth and loud speaker to loud speaker to play the distance of blocking object in mouth front and monitor.
Such as, mouth and loud speaker can be play by range sensor to loud speaker to play the distance of blocking object in mouth front and monitor.
Such as, if the back side that mouth is positioned at mobile terminal play by this loud speaker, then can set up range sensor at the mobile terminal back side, the mobile terminal back side is arranged on by range sensor, so now, step " is play mouth and loud speaker by range sensor to loud speaker to play the distance of blocking object in mouth front and monitor " and can be comprised:
Whether the back side is towards blocking object to determine mobile terminal, if the back side is towards blocking object, then obtains this back side and the distance of blocking object by range sensor.
Otherwise, if the back side is not towards blocking object, then can think that this back side is enough far away with the distance of blocking object, therefore, can without the need to obtaining this back side and the distance of blocking object.
Again such as, if the front that mouth is positioned at mobile terminal play by this loud speaker, then can set up range sensor in mobile terminal front, mobile terminal front is arranged on by this range sensor, so now, step " is play mouth and loud speaker to loud speaker to play the distance of blocking object in mouth front and monitor " and can be comprised:
Determine that whether mobile terminal is just facing to shelter body, if just facing to shelter body, then obtain this front and the distance of blocking object by range sensor.
Otherwise, if front is not towards blocking object, then can think that this front is enough far away with the distance of blocking object, therefore, can without the need to obtaining this front and the distance of blocking object.
103, determine whether this distance is less than preset threshold value, if so, then perform step 104, if not, then perform step 105.
Wherein, this threshold value can be arranged according to the demand of practical application, and such as, can be fixedly installed in advance in the terminal, also can be arranged voluntarily by user by system, that is, the processing method of this voice signal can also comprise:
Reception arranges request, according to this arrange request this threshold value is arranged.
If 104 these distances are less than preset threshold value, then the first echo cancellation algorithm is utilized to process echo;
Such as, if this distance is less than preset threshold value, then can export the first return value, to call the first audio frequency parameter, obtain corresponding first echo cancellation algorithm according to this first audio frequency parameter, then, utilize this first echo cancellation algorithm to process echo.
Wherein, this first return value, the first audio frequency parameter and the first echo cancellation algorithm can be arranged according to the demand of practical application, and such as, the first return value can be set to 0, the first audio frequency parameter is set to 1, etc., do not repeat them here.
Different audio frequency parameters can corresponding different echo cancellation algorithm, and the mapping relations of audio frequency parameter and echo cancellation algorithm can be set in advance in the processing unit of this voice messaging, do not repeat them here.
If 105 these distances are more than or equal to preset threshold value, then the second echo cancellation algorithm is utilized to process echo.
Such as, if this distance is more than or equal to preset threshold value, then can export the second return value, to call the second audio frequency parameter, obtain corresponding second echo cancellation algorithm according to this second audio frequency parameter, then, utilize this second echo cancellation algorithm to process echo.
Wherein, this second return value, the second audio frequency parameter and the second echo cancellation algorithm can be arranged according to the demand of practical application, such as, 0 is set to by the first return value, and the first audio frequency parameter is set to 1 accordingly, the second return value can be set to 1, the second audio frequency parameter is set to 2, etc., do not repeat them here.
Wherein, first echo cancellation algorithm suppresses the intensity of echo to be greater than the second echo cancellation algorithm, this is because, owing to blocking the stop of object, the voice messaging that player is play can be blocked reflections off objects by this, thus make more echo signals enter microphone, thus produce hands-free echo, if and apart from this, to block object nearer, such as, by this mobile terminal horizontal at desktop, then echo is larger, therefore, need to adopt stronger echo cancellation algorithm to suppress echo, otherwise, if apart from this, to block object far away, then echo is less, therefore, more weak echo cancellation algorithm can be adopted to suppress echo.
As from the foregoing, the present embodiment is when determining that mobile terminal enters hand-free call, the loud speaker of mobile terminal can be started, and mouth and loud speaker are play to loud speaker play the distance of blocking object in mouth front and monitor, if this distance is less than preset threshold value, then utilizes and suppress the first stronger echo cancellation algorithm of echo intensity to process echo, otherwise, if this distance is more than or equal to preset threshold value, then utilizes and suppress the second more weak echo cancellation algorithm of echo intensity to process echo; The program can select according to the concrete state of mobile terminal the mode processing echo flexibly, to eliminate echo better, therefore, can improve the inhibition of echo, greatly improve speech quality.
Embodiment two,
According to the method described by embodiment one, below citing is described in further detail.
In the present embodiment, by specifically in the terminal integrated with the processing unit of this voice signal, and the back side that loud speaker broadcasting mouth is positioned at mobile terminal is that example is described.
First, range sensor can be set up at the back side of mobile terminal, secondly, just this mobile terminal back side and the distance of blocking object can be monitored by this range sensor, then, select corresponding echo suppressor mode according to this distance, below will be described in detail.
As shown in Figure 2, a kind of processing method of voice signal, idiographic flow can be as follows:
201, mobile terminal is when carrying out voice call, receives hands-free request.
Such as, user can be received by the hands-free request clicked or the hands-free button that slides triggers, etc.
202, mobile terminal starts hand-free call function according to this hands-free request, to enter hand-free call, and obtains voice signal.
203, mobile terminal determines that the loud speaker starting mobile terminal is to play voice signal.
Such as, mobile terminal can call loud speaker process, performs this loud speaker process to start loud speaker, and plays voice signal by this loud speaker.
204, whether the back side is towards blocking object for mobile terminal determination mobile terminal, if the back side is towards blocking object, then obtains this back side and the distance of blocking object by range sensor.
Otherwise, if the back side is not towards blocking object, then can think that this back side is enough far away with the distance of blocking object, therefore, can without the need to obtaining this back side and the distance of blocking object.
205, mobile terminal determines whether this distance is less than preset threshold value, if be less than preset threshold value, then show to there is strong reflection, therefore, perform step 206, otherwise, if be not less than preset threshold value (being namely more than or equal to this preset threshold value), then show to there is not strong reflection, therefore, can step 208 be performed.
Wherein, this threshold value can be arranged according to the demand of practical application, and such as, can be fixedly installed in advance in the terminal, also can be arranged voluntarily by user by system, that is, the processing method of this voice signal can also comprise:
Reception arranges request, according to this arrange request this threshold value is arranged.
206, when mobile terminal determines that this distance is less than preset threshold value, export the first return value, to call the first audio frequency parameter, then perform step 207.
Wherein, this first return value and the first audio frequency parameter can be arranged according to the demand of practical application, do not repeat them here.
Such as, if mobile terminal faces up, horizontal on the table, then now can obtain this mobile terminal back side and the distance of blocking object by range sensor, and determine that this distance is less than preset threshold value, therefore, the first return value is exported, such as, can 0 be exported, to call the first audio frequency parameter, such as call audio frequency parameter 1, then perform step 207.
207, mobile terminal obtains corresponding first echo cancellation algorithm according to this first audio frequency parameter, utilizes this first echo cancellation algorithm to process echo.
Such as, can echo signal be obtained, then, utilize this first echo cancellation algorithm to generate the suppression signal contrary with this echo signal waveform, then utilize this suppression signal to offset this echo signal, etc.
Wherein, this first echo cancellation algorithm can be arranged according to the demand of practical application, does not repeat them here.
208, when mobile terminal determines that this distance is more than or equal to preset threshold value, export the second return value, to call the second audio frequency parameter, then perform step 209.
Wherein, this second return value and the second audio frequency parameter can be arranged according to the demand of practical application, do not repeat them here.
Such as, if mobile terminal is not placed on the table, but hand-held by user, and loud speaker broadcasting mouth is not blocked, then now can obtain this mobile terminal back side and the distance of blocking object by range sensor, and determine that this distance is more than or equal to preset threshold value, therefore, export the second return value, such as, can 1 be exported, to call the second audio frequency parameter, such as call audio frequency parameter 2, then perform step 209.
209, mobile terminal obtains corresponding second echo cancellation algorithm according to this second audio frequency parameter, utilizes this second echo cancellation algorithm to process echo.
Such as, can echo signal be obtained, then, utilize this second echo cancellation algorithm to generate the suppression signal contrary with this echo signal waveform, then utilize this suppression signal to offset this echo signal, etc.
Wherein, this second echo cancellation algorithm can be arranged according to the demand of practical application, and the second echo cancellation algorithm suppresses the intensity of echo to be less than the first echo cancellation algorithm; This is because, owing to blocking the stop of object, the voice messaging that player is play can be blocked reflections off objects by this, thus make more echo signals enter microphone, thus produce hands-free echo, if and apart from this, to block object nearer, such as, by this mobile terminal horizontal at desktop, then echo is larger, therefore, need to adopt stronger echo cancellation algorithm to suppress echo, otherwise, if apart from this, to block object far away, then echo is less, therefore, more weak echo cancellation algorithm can be adopted to suppress echo.
As from the foregoing, the present embodiment is when determining that mobile terminal enters hand-free call, the loud speaker of mobile terminal can be started, and mouth and loud speaker are play to loud speaker play the distance of blocking object in mouth front and monitor, if this distance is less than preset threshold value, then utilizes and suppress the first stronger echo cancellation algorithm of echo intensity to process echo, otherwise, if this distance is more than or equal to preset threshold value, then utilizes and suppress the second more weak echo cancellation algorithm of echo intensity to process echo; The program can select according to the concrete state of mobile terminal the mode processing echo flexibly, to eliminate echo better, therefore, can improve the inhibition of echo, greatly improve speech quality.
Embodiment three,
In order to implement above method better, the embodiment of the present invention also provides a kind of processing unit of voice signal, as shown in Figure 3 a, the processing unit of this voice signal can comprise start unit 301, monitoring means 302, first processing unit 303 and the second processing unit 304, as follows:
(1) start unit 301;
Start unit 301, during for determining that mobile terminal enters hand-free call, starts the loud speaker of mobile terminal to play voice signal.
Such as, start unit 301, may be used for when determining that terminal enters hand-free call, calls loud speaker process, performs this loud speaker process to start loud speaker, and plays voice signal by this loud speaker.
Wherein, before determining that mobile terminal enters hand-free call, this start unit 301 can also be used for obtaining voice signal.
(2) monitoring means 302;
Monitoring means 302, the distance of blocking object for playing mouth front to loud speaker broadcasting mouth and loud speaker is monitored.
Such as, this monitoring means 302, specifically may be used for playing mouth and loud speaker by range sensor to loud speaker and plays the distance of blocking object in mouth front and monitor.
Such as, if the back side that mouth is positioned at mobile terminal play by this loud speaker, then range sensor can be arranged on the mobile terminal back side, so now:
Monitoring means 302, whether the back side is towards blocking object specifically to may be used for determining mobile terminal, if the back side is towards blocking object, then obtains this back side and the distance of blocking object by range sensor.
Otherwise if the back side is not towards blocking object, then can think that this back side is enough far away with the distance of blocking object, therefore, monitoring means 302 can without the need to obtaining this back side and the distance of blocking object.
Again such as, if the front that mouth is positioned at mobile terminal play by this loud speaker, then this range sensor can be arranged on mobile terminal front, so now:
Monitoring means 302, specifically may be used for determining that whether mobile terminal is just facing to shelter body, if just facing to shelter body, then obtains this front and the distance of blocking object by range sensor.
Otherwise if front is not towards blocking object, then can think that this front is enough far away with the distance of blocking object, therefore, monitoring means 302 can without the need to obtaining this front and the distance of blocking object.
(3) first processing units 303;
First processing unit 303, for when monitoring means 302 determines that this distance is less than preset threshold value, utilizes the first echo cancellation algorithm to process echo.
Such as, first processing unit 303, specifically may be used for when monitoring means 302 determines that this distance is less than preset threshold value, export the first return value, to call the first audio frequency parameter, obtain corresponding first echo cancellation algorithm according to this first audio frequency parameter, and utilize this first echo cancellation algorithm to process echo.
Wherein, this first return value, the first audio frequency parameter and the first echo cancellation algorithm can be arranged according to the demand of practical application, and such as, the first return value can be set to 0, the first audio frequency parameter is set to 1, etc., do not repeat them here.
Different audio frequency parameters can corresponding different echo cancellation algorithm, and the mapping relations of audio frequency parameter and echo cancellation algorithm can be set in advance in the processing unit of this voice messaging, do not repeat them here.
(4) second processing units 304;
Second processing unit 304, for when monitoring means 302 determines that this distance is more than or equal to preset threshold value, utilizes the second echo cancellation algorithm to process echo, and wherein, the first echo cancellation algorithm suppresses the intensity of echo to be greater than the second echo cancellation algorithm.
Such as, second processing unit 304, specifically may be used for when monitoring means 302 preset threshold value of determining that this distance is not less than (being namely more than or equal to), export the second return value, to call the second audio frequency parameter, obtain corresponding second echo cancellation algorithm according to this second audio frequency parameter, and utilize this second echo cancellation algorithm to process echo.
Wherein, this second return value, the second audio frequency parameter and the second echo cancellation algorithm can be arranged according to the demand of practical application, such as, 0 is set to by the first return value, and the first audio frequency parameter is set to 1 accordingly, the second return value can be set to 1, the second audio frequency parameter is set to 2, etc., do not repeat them here.
Wherein, this preset threshold value can be arranged according to the demand of practical application, such as, can be fixedly installed in advance in the terminal by system, also can be arranged voluntarily by user, namely as shown in Figure 3 b, the processing unit of this voice signal can also comprise setting unit 305, as follows:
Setting unit 305, for receive request is set, according to this arrange request this threshold value is arranged.
During concrete enforcement, above unit can realize as independently entity, and can carry out combination in any yet, realize as same or several entities, the concrete enforcement of above unit see embodiment of the method above, can not repeat them here.
The processing unit of this voice signal specifically can be integrated in the equipment such as mobile terminal, and this mobile terminal can comprise the equipment such as mobile phone or panel computer.
As from the foregoing, the processing unit of the voice signal of the present embodiment is when determining that mobile terminal enters hand-free call, the loud speaker of mobile terminal can be started by start unit 301, and play mouths and loud speaker by the monitoring means 302 pairs of loud speakers and play the distance of blocking object in mouth front and monitor, if this distance is less than preset threshold value, then being utilized by the first processing unit 303 suppresses the first stronger echo cancellation algorithm of echo intensity to process echo, otherwise, if this distance is more than or equal to preset threshold value, then being utilized by the second processing unit 304 suppresses the second more weak echo cancellation algorithm of echo intensity to process echo, the program can select according to the concrete state of mobile terminal the mode processing echo flexibly, to eliminate echo better, therefore, can improve the inhibition of echo, greatly improve speech quality.
One of ordinary skill in the art will appreciate that all or part of step in the various methods of above-described embodiment is that the hardware that can carry out instruction relevant by program has come, this program can be stored in a computer-readable recording medium, storage medium can comprise: read-only memory (ROM, ReadOnlyMemory), random access memory (RAM, RandomAccessMemory), disk or CD etc.
Above the processing method of a kind of voice signal that the embodiment of the present invention provides and device are described in detail, apply specific case herein to set forth principle of the present invention and execution mode, the explanation of above embodiment just understands method of the present invention and core concept thereof for helping; Meanwhile, for those skilled in the art, according to thought of the present invention, all will change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.
Claims (14)
1. a processing method for voice signal, is characterized in that, comprising:
When determining that mobile terminal enters hand-free call, start the loud speaker of mobile terminal to play voice signal;
Play mouth and loud speaker to loud speaker to play the distance of blocking object in mouth front and monitor;
If described distance is less than preset threshold value, then the first echo cancellation algorithm is utilized to process echo;
If described distance is more than or equal to preset threshold value, then utilize the second echo cancellation algorithm to process echo, described first echo cancellation algorithm suppresses the intensity of echo to be greater than the second echo cancellation algorithm.
2. method according to claim 1, is characterized in that, if described distance is less than preset threshold value, then utilizes the first echo cancellation algorithm to process echo, comprising:
If described distance is less than preset threshold value, then export the first return value, to call the first audio frequency parameter;
Corresponding first echo cancellation algorithm is obtained according to described first audio frequency parameter;
Described first echo cancellation algorithm is utilized to process echo.
3. method according to claim 1, is characterized in that, if described distance is more than or equal to preset threshold value, then utilizes the second echo cancellation algorithm to process echo, comprising:
If described distance is more than or equal to preset threshold value, then export the second return value, to call the second audio frequency parameter;
Corresponding second echo cancellation algorithm is obtained according to described second audio frequency parameter;
Described second echo cancellation algorithm is utilized to process echo.
4. the method according to any one of claims 1 to 3, is characterized in that, describedly plays mouth and loud speaker to loud speaker and plays the distance of blocking object in mouth front and monitor, and comprising:
Play mouth and loud speaker by range sensor to loud speaker to play the distance of blocking object in mouth front and monitor.
5. method according to claim 4, it is characterized in that, the back side that mouth is positioned at mobile terminal play by described loud speaker, and described range sensor is arranged on the mobile terminal back side, then describedly mouth and loud speaker are play to loud speaker play the distance of blocking object in mouth front and monitor, comprising:
Whether the back side is towards blocking object to determine mobile terminal;
If the back side is towards blocking object, then obtain the described back side and the distance of blocking object by range sensor.
6. method according to claim 4, it is characterized in that, the front that mouth is positioned at mobile terminal play by described loud speaker, and described range sensor is arranged on mobile terminal front, then describedly mouth and loud speaker are play to loud speaker play the distance of blocking object in mouth front and monitor, comprising:
Determine that whether mobile terminal is just facing to shelter body;
If just facing to shelter body, then obtaining described front and the distance of blocking object by range sensor.
7. the method according to any one of claims 1 to 3, is characterized in that, also comprises:
Reception arranges request;
Ask to arrange described threshold value according to described setting.
8. a processing unit for voice signal, is characterized in that, comprising:
Start unit, during for determining that mobile terminal enters hand-free call, starts the loud speaker of mobile terminal to play voice signal;
Monitoring means, the distance of blocking object for playing mouth front to loud speaker broadcasting mouth and loud speaker is monitored;
First processing unit, during for determining that described distance is less than preset threshold value at monitoring means, utilizes the first echo cancellation algorithm to process echo;
Second processing unit, during for determining that described distance is more than or equal to preset threshold value at monitoring means, utilizes the second echo cancellation algorithm to process echo, and described first echo cancellation algorithm suppresses the intensity of echo to be greater than the second echo cancellation algorithm.
9. device according to claim 8, is characterized in that, described first processing unit, specifically for:
If described distance is less than preset threshold value, then export the first return value, to call the first audio frequency parameter;
Corresponding first echo cancellation algorithm is obtained according to described first audio frequency parameter;
Described first echo cancellation algorithm is utilized to process echo.
10. device according to claim 8, is characterized in that, described second processing unit, specifically for:
If described distance is more than or equal to preset threshold value, then export the second return value, to call the second audio frequency parameter;
Corresponding second echo cancellation algorithm is obtained according to described second audio frequency parameter;
Described second echo cancellation algorithm is utilized to process echo.
Device described in 11. any one of according to Claim 8 to 10, is characterized in that,
Described monitoring means, plays the distance of blocking object in mouth front monitor specifically for playing mouth and loud speaker by range sensor to loud speaker.
12. devices according to claim 11, is characterized in that, the back side that mouth is positioned at mobile terminal play by described loud speaker, and described range sensor is arranged on the mobile terminal back side, then:
Described monitoring means, specifically for determining mobile terminal, whether the back side is towards blocking object, if the back side is towards blocking object, then obtains the described back side and the distance of blocking object by range sensor.
13. devices according to claim 11, is characterized in that, the front that mouth is positioned at mobile terminal play by described loud speaker, and described range sensor is arranged on mobile terminal front, then:
Described monitoring means, specifically for determining that whether mobile terminal is just facing to shelter body, if just facing to shelter body, is then obtaining described front and the distance of blocking object by range sensor.
Device described in 14. any one of according to Claim 8 to 10, is characterized in that, also comprise setting unit;
Setting unit, arranges request for receiving, and asks to arrange described threshold value according to described setting.
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| CN111883156A (en) * | 2020-07-22 | 2020-11-03 | Oppo（重庆）智能科技有限公司 | Audio processing method and device, electronic equipment and storage medium |
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| CN102624961A (en) * | 2012-02-29 | 2012-08-01 | 华为终端有限公司 | Method and terminal for preventing sound crosstalk between external loudspeaker and microphone |
| CN103501375A (en) * | 2013-09-16 | 2014-01-08 | 华为终端有限公司 | Method and device for controlling sound effect |
| CN103905588A (en) * | 2014-03-10 | 2014-07-02 | 联想(北京)有限公司 | Electronic device and control method |
| CN103945026A (en) * | 2014-03-27 | 2014-07-23 | 山东共达电声股份有限公司 | Mobile terminal |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106534532A (en) * | 2016-11-08 | 2017-03-22 | 深圳众思科技有限公司 | Call quality improving method and terminal |
| CN109274826A (en) * | 2018-09-28 | 2019-01-25 | Oppo广东移动通信有限公司 | Switching method, device and the terminal of voice play mode |
| CN109274826B (en) * | 2018-09-28 | 2021-04-09 | Oppo广东移动通信有限公司 | Voice playing mode switching method and device, terminal and computer readable storage medium |
| CN111883156A (en) * | 2020-07-22 | 2020-11-03 | Oppo（重庆）智能科技有限公司 | Audio processing method and device, electronic equipment and storage medium |
| CN111883156B (en) * | 2020-07-22 | 2023-04-07 | Oppo（重庆）智能科技有限公司 | Audio processing method and device, electronic equipment and storage medium |
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| CN105450880B (en) | 2018-01-26 |
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