CN109639881A - A kind of control method for playing back for sound intermediate frequency signal of conversing - Google Patents
A kind of control method for playing back for sound intermediate frequency signal of conversing Download PDFInfo
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- CN109639881A CN109639881A CN201811336312.4A CN201811336312A CN109639881A CN 109639881 A CN109639881 A CN 109639881A CN 201811336312 A CN201811336312 A CN 201811336312A CN 109639881 A CN109639881 A CN 109639881A
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- signal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/72—Mobile telephones; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selection
- H04M1/724—User interfaces specially adapted for cordless or mobile telephones
- H04M1/72403—User interfaces specially adapted for cordless or mobile telephones with means for local support of applications that increase the functionality
- H04M1/7243—User interfaces specially adapted for cordless or mobile telephones with means for local support of applications that increase the functionality with interactive means for internal management of messages
- H04M1/72433—User interfaces specially adapted for cordless or mobile telephones with means for local support of applications that increase the functionality with interactive means for internal management of messages for voice messaging, e.g. dictaphones
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
- G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/72—Mobile telephones; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selection
- H04M1/724—User interfaces specially adapted for cordless or mobile telephones
- H04M1/72448—User interfaces specially adapted for cordless or mobile telephones with means for adapting the functionality of the device according to specific conditions
- H04M1/72454—User interfaces specially adapted for cordless or mobile telephones with means for adapting the functionality of the device according to specific conditions according to context-related or environment-related conditions
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/72—Mobile telephones; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selection
- H04M1/724—User interfaces specially adapted for cordless or mobile telephones
- H04M1/72484—User interfaces specially adapted for cordless or mobile telephones wherein functions are triggered by incoming communication events
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M2250/00—Details of telephonic subscriber devices
- H04M2250/12—Details of telephonic subscriber devices including a sensor for measuring a physical value, e.g. temperature or motion
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- Engineering & Computer Science (AREA)
- Human Computer Interaction (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Environmental & Geological Engineering (AREA)
- Business, Economics & Management (AREA)
- General Business, Economics & Management (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Telephone Function (AREA)
- Circuit For Audible Band Transducer (AREA)
Abstract
The invention discloses a kind of control method for playing back of sound intermediate frequency signal of conversing, by detecting whether the intensity containing noise in the call voice that mobile terminal earphone is got exceeds preset strength value；If exceeding, controls and generate the reversed noise signal opposite with the intensity equal phase of the noise；The call voice that the reversed noise signal is played with earphone is blended, and the audio signal obtained after fusion is played by earphone, it realizes and eliminates since user itself moves the influence to earphone broadcasting audio, and the noise in the present invention by containing in detection voice communication, and reversed noise signal is generated according to the noise contained in voice communication, reversed noise signal is synthesized in call audio and offsets the noise contained in call voice, to improve the clarity of call sound intermediate frequency signal, convenience is provided for the call of user.
Description
Technical field
The present invention relates to information data process field more particularly to a kind of control method for playing back for sound intermediate frequency signal of conversing.
Background technique
Present user plays music commonly using earphone, or receives calls, and most earphone belong to it is pleasant
The earphone of formula uses in insertion ear.
In normal situation, the influence of ambient noise can be effectively completely cut off using In-Ear earphone, so that user exists
Good enclosed environment is obtained when using earphone.
But In-Ear Headphones are but also user Er Nei forms closed environment, this closed environment can will be inherent
Sound (such as breathing of user, the sound etc. of earphone cable is struck when user walks about) amplifies manyfold, to influence user
Experience.
Therefore, the existing technology needs further improvement.
Summary of the invention
In view of the above shortcomings in the prior art, it is an object of the invention to provide a kind of call sound intermediate frequency for user
The control method for playing back of signal, when the earphone in the prior art using mobile terminal being overcome to carry out voice communication, due to user
The noise generated during own activity, the call voice for causing earphone to play out contain the defect of noise.
The technical proposal for solving the technical problem of the invention is as follows:
A kind of control method for playing back for sound intermediate frequency signal of conversing, the method are applied to carry out voice communication using earphone
Mobile terminal, wherein include:
Whether the intensity containing noise exceeds preset strength value in the call voice that detection mobile terminal earphone is got；
If exceeding, controls and generate the reversed noise signal opposite with the intensity equal phase of the noise；
The audio signal that the call voice that the reversed noise signal is played with earphone is blended, and will obtained after fusion
It is played by earphone.
Optionally, the step of whether containing noise in the call voice that the test earphone receives further include:
When the mobile terminal plays call voice by the earphone, judge whether that receiving the earphone is knocked institute
The vibration signal of generation；
If receiving vibration signal, the mobile terminal judges whether the intensity of the vibration signal is greater than preset strength
Value；
Such as if more than preset strength value, then determine that the intensity containing noise is beyond pre- in the call voice of current earphone broadcasting
If intensity value.
Optionally, described to judge whether that receiving the step of earphone is knocked generated vibration signal includes:
By being arranged on the earphone cable of earphone, or the vibrating sensor detection ear of the position of user ear canal contact is set
Whether machine is knocked.
Optionally, whether the intensity containing noise exceeds preset strength value in the call voice that the test earphone plays
Step further include:
The intensity that mobile terminal calculates vibration signal accounts for the ratio of the intensity of former call voice, then according to the ratio enlargement
Former call voice.
Optionally, the step of control generates opposite with the intensity equal phase of the noise reversed noise signal it
Before, further includes:
Judge whether the vibration signal is frequency-flat vibration signal, is generated and the noise if it is not, then controlling
Otherwise the opposite reversed noise signal of intensity equal phase is back in the call voice that detection mobile terminal earphone is got
Whether the intensity containing noise exceeds the step of preset strength value.
Optionally, described to judge that the step of whether vibration signal is frequency-flat vibration signal includes:
Acquire the echo signal generated in user ear canal by call voice, vibration signal；
Impulse response is calculated according to audio signal, vibration signal and echo signal；
Judge within a preset time period, the number that impulse response occurs；
If number is greater than preset times, the time difference between each impulse response is calculated；
If the time difference is fixed value, determine that the vibration signal is uniform vibration signal；
If the time difference is not fixed value, determining the vibration signal not is uniform vibration signal.
Optionally, described the step of acquiring the echo signal generated in user ear canal by call voice and vibration signal
Include:
By the way that electroacoustic transducer, or the Mike's elegance being located in user ear canal by the way that earphone is arranged in is arranged on earphone
Collect the echo signal generated in user ear canal.
Optionally, impulse response is calculated according to call voice, vibration signal and echo signal using described in following formula:
W (t)=(r (t)-e (t))/(s (t)+z (t))；
Wherein, w (t) is impulse response, and r (t) is echo signal, and s (t) is call voice, and z (t) is vibration signal, wherein
R (t), s (t), z (t) are collected by electroacoustic transducer or microphone；E (t) is the noise parameter pre-seted.
Optionally, the step of call voice that the reversed noise signal is played with earphone blends include:
The highest point of the call voice vibration acoustic is combined with the minimum point of reversed noise signal vibration acoustic, and
The time of at least half vibration period of delay.
Optionally, described the step of playing the audio signal obtained after fusion by earphone further include:
The intensity value of noise signal in external environment is detected, and according to the volume value of noise signal in external environment, according to
Difference in the default volume value for playing call voice and external environment between the volume value of noise signal adjusts and plays call language
The volume value of sound.
Beneficial effect, the present invention in, electroacoustic transducer is provided on earphone, mobile terminal can play audio by earphone
Signal then illustrates that user apparatus has arrived earphone cable, mobile terminal when mobile terminal receives vibration signal from electroacoustic transducer
Judge whether the intensity of vibration signal is sufficiently large, if sufficiently large, illustrates that will affect user listens to, at this point it is possible to
The audio signal of broadcasting is handled, to reduce influence of the vibration signal to user.
Detailed description of the invention
Fig. 1 is a kind of step flow chart of the control method for playing back of sound intermediate frequency signal of conversing provided by the invention.
Specific embodiment
The present invention provides a kind of control method for playing back of sound intermediate frequency signal of conversing, to make the purpose of the present invention, technical side
Case and advantage are clearer, clear, and the present invention is described in more detail as follows in conjunction with drawings and embodiments.It should be appreciated that
Specific embodiment described herein is used only for explaining the present invention, is not intended to limit the present invention.
It is provided by the invention it is a kind of converse sound intermediate frequency signal control method for playing back, the method be applied to using earphone into
The mobile terminal of row voice communication, as described in Figure 1, comprising:
Step S1, in the call voice that gets of detection mobile terminal earphone the intensity containing noise whether exceed it is default strong
Angle value.
When monitoring that terminal has call event, terminal first detects the state of call voice, and judgement wherein contains
Whether some noise intensities exceed preset range, if exceeding, may affect to its speech quality.It is contemplated that
Be the preset strength can be user according to their own needs oneself setting threshold value, be also possible to terminal system default
The preset strength value of setting, the preset strength value correspond to the maximum acceptable intensity value in call voice containing noise.
If step S2, exceeding, controls and generate the reversed noise signal opposite with the intensity equal phase of the noise.
When the level of noise contained in the call voice played out in earphone exceed preset intensity value, then can more speech qualities
It impacts, therefore is influenced due to noise to call bring to overcome, produced in this step according to the noise signal detected
The raw reversed noise signal opposite with its intensity equal phase.
Step S3, the call voice that the reversed noise signal is played with earphone is blended, and will be obtained after fusion
Audio signal is played by earphone.
After the call voice that reversed noise signal and earphone play is blended, then fused audio signal is transferred to end
The microphone at end plays out.
Specifically, in the above-mentioned methods, since noise maximum in communication process is from user's displacement institute
The vibration signal of generation, therefore the step of whether containing noise in the call voice that the test earphone receives further include:
Step S11, when the described mobile terminal plays call voice by the earphone, judge whether to receive the earphone
It is knocked generated vibration signal.
It is described to judge whether that receiving the earphone is knocked institute in order to preferably be detected to the intensity of vibration signal
The step of vibration signal of generation includes:
By being arranged on the earphone cable of earphone, or the vibrating sensor detection ear of the position of user ear canal contact is set
Whether machine is knocked.
If step S12, receiving vibration signal, the mobile terminal judges whether the intensity of the vibration signal is greater than
Preset strength value.
For being detected in order to more targeted to vibration signal, only to the intensity value of vibration signal in this step
Whether preset strength value is greater than,
Specifically, test earphone described in this step play call voice in the intensity containing noise whether exceed it is default
The step of intensity value further include:
The intensity that mobile terminal calculates vibration signal accounts for the ratio of the intensity of former call voice, then according to the ratio enlargement
Former call voice.
Step S13, such as if more than preset strength value, then determine in the call voice of current earphone broadcasting containing the strong of noise
Degree exceeds preset strength value.
Due to the intensity for more accurate detection noise signal, in embodiment only to the vibration signal in noise into
Row acquires, and the intensity of vibration signal is determined as to the intensity of noise signal, ignores other kinds of noise to call audio
It influences, therefore while guaranteeing detection effect, improves the efficiency of noise measuring.
Specifically, the step of control generates opposite with the intensity equal phase of the noise reversed noise signal it
Before, further includes:
Judge whether the vibration signal is frequency-flat vibration signal, is generated and the noise if it is not, then controlling
Otherwise the opposite reversed noise signal of intensity equal phase is back in the call voice that detection mobile terminal earphone is got
Whether the intensity containing noise exceeds the step of preset strength value.
It in order to which whether accurately get vibration signal is noise, avoids judging it by accident, the judgement vibration letter
The step of number whether being frequency-flat vibration signal includes:
Acquire the echo signal generated in user ear canal by call voice, vibration signal；
Impulse response is calculated according to audio signal, vibration signal and echo signal；
Judge within a preset time period, the number that impulse response occurs；
If number is greater than preset times, the time difference between each impulse response is calculated；
If the time difference is fixed value, determine that the noise signal is uniform vibration signal；
If the time difference is not fixed value, determining the noise signal not is uniform vibration signal.
Specifically, the preset time are as follows: 7-15 seconds, preferably, being selected as 10 seconds.Number are as follows: 3-7 times.When described
Between it is poor are as follows: 1 second or 2 seconds.
If the time difference is fixed, illustrate vibration signal and audio signal be in phase it is matched, then further illustrate use
Family may be to beat time or moving with music, at this time without amplifying audio signal, it is only necessary to continue broadcasting；If when
Between difference be not fixed, such as the first time and the second minor tick 3 seconds, second and third minor tick 0.5 second, then illustrate there is noise shadow
It rings, inverse noise signal identical with vibration signal opposite in phase, intensity can be added in audio signal at this time, to realize
Noise is eliminated.
It is more detailed, the echo signal that the acquisition is generated in user ear canal by call voice and vibration signal
Step includes:
By the way that electroacoustic transducer, or the Mike's elegance being located in user ear canal by the way that earphone is arranged in is arranged on earphone
Collect the echo signal generated in user ear canal.
In the specific implementation, preferably, using described in following formula according to call voice, vibration signal and echo signal
Calculate impulse response:
W (t)=(r (t)-e (t))/(s (t)+z (t))；
Wherein, w (t) is impulse response, and r (t) is echo signal, and s (t) is call voice, and z (t) is vibration signal, wherein
R (t), s (t), z (t) are collected by electroacoustic transducer or microphone；E (t) is the noise parameter pre-seted.
It is described by the reversed noise in order to realize the cancellation that is superimposed of vibration signal and reversed noise signal in call voice
The step of call voice that signal is played with earphone blends include:
Step S31, by the minimum point of the highest point of the call voice vibration acoustic and reversed noise signal vibration acoustic
It combines, and the time at least half vibration period that is delayed.
In order to obtain preferably call result of broadcast, the step that the audio signal obtained after fusion is played by earphone
Suddenly further include:
The intensity value of noise signal in external environment is detected, and according to the volume value of noise signal in external environment, according to
Difference in the default volume value for playing call voice and external environment between the volume value of noise signal adjusts and plays call language
The volume value of sound.
It can be preset in this step in an external environment between the volume value of noise signal and the volume value of call voice
Difference, and adjust automatically according to the extraneous volume value that detects the intensity value of call voice, provide more visible lead to for user
Speech frequency.
The invention discloses a kind of control method for playing back of sound intermediate frequency signal of conversing, and are obtained by detection mobile terminal earphone
To call voice in the intensity containing noise whether exceed preset strength value；If exceeding, controls and generate and the noise
The opposite reversed noise signal of intensity equal phase；The call voice that the reversed noise signal is played with earphone is blended,
And play the audio signal obtained after fusion by earphone, elimination is realized since user itself moves, and audio is played to earphone
Influence, and by the noise that contains in detection voice communication in the present invention, and produced according to the noise contained in voice communication
Reversed noise signal is synthesized in call audio and offsets the noise contained in call voice, to mention by raw reversed noise signal
The clarity of height call sound intermediate frequency signal, provides convenience for the call of user.
It, can according to the technique and scheme of the present invention and its hair it is understood that for those of ordinary skills
Bright design is subject to equivalent substitution or change, and all these changes or replacement all should belong to the guarantor of appended claims of the invention
Protect range.
Claims (10)
1. a kind of control method for playing back for sound intermediate frequency signal of conversing, the method is applied to carry out the shifting of voice communication using earphone
Dynamic terminal characterized by comprising
Whether the intensity containing noise exceeds preset strength value in the call voice that detection mobile terminal earphone is got；
If exceeding, controls and generate the reversed noise signal opposite with the intensity equal phase of the noise；
The call voice that the reversed noise signal is played with earphone is blended, and the audio signal obtained after fusion is passed through
Earphone plays.
2. the control method for playing back of call sound intermediate frequency signal according to claim 1, which is characterized in that the test earphone
The step of whether containing noise in the call voice received further include:
When the mobile terminal plays the call voice by the earphone, judge whether that receiving the earphone is knocked institute
The vibration signal of generation；
If receiving vibration signal, the mobile terminal judges whether the intensity of the vibration signal is greater than preset strength value；
Such as if more than preset strength value, then determine that the intensity containing noise is beyond default strong in the call voice of current earphone broadcasting
Angle value.
3. the control method for playing back of call sound intermediate frequency signal according to claim 2, which is characterized in that described to judge whether
Receiving the step of earphone is knocked generated vibration signal includes:
The vibrating sensor test earphone of position by being arranged on the earphone cable of earphone or being arranged in user ear canal contact is
It is no to be knocked.
4. the control method for playing back of call sound intermediate frequency signal according to claim 3, which is characterized in that the test earphone
The step of whether intensity in the call voice of broadcasting containing noise exceeds preset strength value further include:
The intensity that mobile terminal calculates vibration signal accounts for the ratio of the intensity of former call voice, then logical according to the ratio enlargement original
Language sound.
5. the control method for playing back of call sound intermediate frequency signal according to claim 4, which is characterized in that the control generates
Before the step of opposite with the intensity equal phase of the noise reversed noise signal, further includes:
Judge whether the vibration signal is frequency-flat vibration signal, if it is not, then controlling the intensity generated with the noise
Otherwise the opposite reversed noise signal of equal phase is back in the call voice that detection mobile terminal earphone is got and contains
Whether the intensity of noise exceeds the step of preset strength value.
6. the control method for playing back of call sound intermediate frequency signal according to claim 5, which is characterized in that described in the judgement
The step of whether vibration signal is frequency-flat vibration signal include:
Acquire the echo signal generated in user ear canal by call voice, vibration signal；
Impulse response is calculated according to audio signal, vibration signal and echo signal；
Judge within a preset time period, the number that impulse response occurs；
If number is greater than preset times, the time difference between each impulse response is calculated；
If the time difference is fixed value, determine that the vibration signal is uniform vibration signal；
If the time difference is not fixed value, determining the vibration signal not is uniform vibration signal.
7. the control method for playing back of call sound intermediate frequency signal according to claim 6, which is characterized in that the acquisition is by leading to
The step of echo signal that language sound and vibration signal generate in user ear canal includes:
It is used by the way that electroacoustic transducer is arranged on earphone, or by the way that the microphone acquisition that earphone is located in user ear canal is arranged in
The echo signal generated in the ear canal of family.
8. the control method for playing back of call sound intermediate frequency signal according to claim 7, which is characterized in that utilize following formula
It is described that impulse response is calculated according to call voice, vibration signal and echo signal:
W (t)=(r (t)-e (t))/(s (t)+z (t))；
Wherein, w (t) is impulse response, and r (t) is echo signal, and s (t) is call voice, and z (t) is vibration signal, wherein r
(t), s (t), z (t) are collected by electroacoustic transducer or microphone；E (t) is the noise parameter pre-seted.
9. it is according to claim 8 call sound intermediate frequency signal control method for playing back, which is characterized in that it is described will it is described instead
The step of call voice played to noise signal with earphone blends include:
The highest point of the call voice vibration acoustic is combined with the minimum point of reversed noise signal vibration acoustic, and is delayed
The time of at least half vibration period.
10. the control method for playing back of call sound intermediate frequency signal according to claim 9, which is characterized in that described to merge
The step of audio signal obtained afterwards is played by earphone further include:
The intensity value of noise signal in external environment is detected, and according to the volume value of noise signal in external environment, according to default
The difference in the volume value and external environment of call voice between the volume value of noise signal is played, adjusts and plays call voice
Volume value.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811336312.4A CN109639881A (en) | 2018-11-10 | 2018-11-10 | A kind of control method for playing back for sound intermediate frequency signal of conversing |
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| CN201811336312.4A CN109639881A (en) | 2018-11-10 | 2018-11-10 | A kind of control method for playing back for sound intermediate frequency signal of conversing |
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| CN201811336312.4A Pending CN109639881A (en) | 2018-11-10 | 2018-11-10 | A kind of control method for playing back for sound intermediate frequency signal of conversing |
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| CN112423193A (en) * | 2020-09-24 | 2021-02-26 | 深圳市修远文化创意有限公司 | Sound processing method and related device |
| CN113890936A (en) * | 2021-11-09 | 2022-01-04 | Oppo广东移动通信有限公司 | Volume adjustment method, device and storage medium |
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Application publication date: 20190416 |