CN107404683A - Sound processing method and device - Google Patents
Sound processing method and device Download PDFInfo
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- CN107404683A CN107404683A CN201610329659.0A CN201610329659A CN107404683A CN 107404683 A CN107404683 A CN 107404683A CN 201610329659 A CN201610329659 A CN 201610329659A CN 107404683 A CN107404683 A CN 107404683A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R3/00—Circuits for transducers, loudspeakers or microphones
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2430/00—Signal processing covered by H04R, not provided for in its groups
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- Acoustics & Sound (AREA)
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- Circuit For Audible Band Transducer (AREA)
Abstract
The invention discloses a kind of sound processing method and device, belongs to electronic technology field, and methods described includes step：Switched between speaker mode and microphone mode；When entering speaker mode, control acoustic-electric bidrectional transducer receives electric signal, and is exported after converting electrical signals to voice signal；When entering microphone mode, acoustic-electric bidrectional transducer collected sound signal is controlled, and exported after voice signal is converted into electric signal.So as to, pass through the handover operation between speaker mode and microphone mode, electroacoustic conversion is carried out by acoustic-electric bidrectional transducer in loudspeaker mode and realizes loudspeaker function, acoustic-electric conversion is carried out by acoustic-electric bidrectional transducer under microphone mode and realizes microphone function, so that loudspeaker function and microphone function are merged, a transducer is multiplexed equivalent to loudspeaker and microphone, so as to reduce the parts in terminal, and then space-consuming is reduced, and greatly reduce cost.
Description
Technical field
The present invention relates to electronic technology field, more particularly to a kind of sound processing method and device.
Background technology
Terminal device generally all has acoustic processing function, including plays sound, recorded voice etc., wherein, play sound and realized by loudspeaker, recorded voice is realized by microphone (or Mike, MIC).Each loudspeaker and microphone include a transducer.The transducer of loudspeaker is also known as electroacoustic transducer, can convert electrical signals to voice signal, realizes the broadcasting of sound；The transducer of microphone is also known as acoustical-electrical transducer, voice signal can be converted into electric signal, realize the recording of sound.
According to the operation principle of transducer and the difference of structure, loudspeaker is divided into coil-moving speaker, moving iron type loud-speaker, electrostatic loudspeaker etc..Wherein, the transducer of coil-moving speaker is moving-coil structure, as moving-coil type transducer.The moving-coil type transducer of coil-moving speaker is as shown in Figure 1, mainly include vibrating diaphragm 10, ring 20, cone 30, dust cap 40, determine chip 50, coil 60, permanent magnet 70, magnetic conductive board 80 and outer magnet 90, vibrating diaphragm 10, ring 20, determine chip 50, coil 60 and the skeleton composition vibrational system for carrying coil 60, permanent magnet 70, magnetic conductive board 80 and outer magnet 90 form magnetic circuit system.Its operation principle is：By the coil 60 of the electric signal inputted vibration system of alternation, it is set to be moved in the magnetic field that magnetic circuit system is formed by the effect of power, the attribute of this power defers to left hand rule (motor rule), the coil 60 of motion drives vibrating diaphragm 10 to produce vibration, so as to send sound, electroacoustic conversion is completed.
According to the operation principle of transducer and the difference of structure, microphone is divided into moving-coil microphone, condenser microphone, post level body formula microphone etc..Wherein, the transducer of moving-coil microphone is moving-coil structure, as moving-coil type transducer.For the moving-coil type transducer of moving-coil microphone as shown in Fig. 2 mainly coil 200 and magnet 300 including vibrating diaphragm 100, connection vibrating diaphragm 100, vibrating diaphragm 100 and coil 200 form vibrational system, magnet 300 forms magnetic circuit system.Its operation principle is：Sound wave reaches vibrating diaphragm 100, vibrating diaphragm 100 vibrates under the promotion of acoustic pressure, the vibrating diaphragm 100 of vibration moves back and forth in the magnetic field that magnetic circuit system is formed with moving winding 200 and magnetic field is cut, at this moment induced-current will be produced in coil 200, the sense of current defers to the right-hand rule (particularization of distracted secondary rule), and the electric current 200 is exactly the electric signal formed after acoustic-electric is changed.As can be seen here, the moving-coil type transducer of coil-moving speaker and moving-coil microphone realizes that the process of electroacoustic conversion and acoustic-electric conversion is just opposite.
With the intelligence degree more and more higher of terminal device, the audio function of terminal device is also more abundant, and prior art mainly more enriches audio function by way of device is piled up to realize, the acoustic processing devices such as more loudspeakers and microphone are set in terminal device, and each loudspeaker and microphone each have a transducer.So as to it on the one hand improve the cost of terminal；On the other hand, for size-constrained mobile terminal, inner space is extremely valuable, and increased transducer occupies more space, is unfavorable for the lightening of mobile terminal.Meanwhile although the cost of moving-coil microphone is relatively low, because its transducer volume is larger, therefore can only but the post level body formula microphone or condenser microphone of small volume higher from cost.
In summary, existing terminal device enriches audio function by way of device is piled up, and increases the volume of terminal, is unfavorable for the miniaturization of terminal, while improves the cost of terminal.
The content of the invention
In view of this, it is an object of the invention to provide sound processing method and device, to solve terminal volume and the technical problem of cost increase caused by acoustic processing device is piled up.
Technical scheme is as follows used by the present invention solves above-mentioned technical problem：
One side according to embodiments of the present invention, there is provided sound processing method, including step：
Switched between speaker mode and microphone mode；
When entering the speaker mode, control acoustic-electric bidrectional transducer receives electric signal, and is exported after the electric signal is converted into voice signal；
When entering the microphone mode, the acoustic-electric bidrectional transducer collected sound signal is controlled, and exported after the voice signal is converted into electric signal.
Further, it is described switched between speaker mode and microphone mode including：Switching command is received, is switched over according to the switching command between speaker mode and microphone mode.
Further, it is described switched between speaker mode and microphone mode including：Current working condition is detected, is switched over according to the working condition between speaker mode and microphone mode.
Further, it is described and also include after the voice signal is converted into the step of being exported after electric signal：Processing is amplified to the electric signal of acoustic-electric bidrectional transducer output.
Further, the acoustic-electric bidrectional transducer is moving-coil type transducer.
Other side according to embodiments of the present invention, there is provided a kind of sound processing apparatus, including mode switch module, first processing module, Second processing module and acoustic-electric bidrectional transducer, wherein：
The mode switch module, for being switched between speaker mode and microphone mode；
The first processing module, for when entering the speaker mode, controlling the acoustic-electric bidrectional transducer to receive electric signal, and exported after the electric signal is converted into voice signal；
The Second processing module, for when entering the microphone mode, controlling the acoustic-electric bidrectional transducer collected sound signal, and exported after the voice signal is converted into electric signal.
Further, the mode switch module is used for：Switching command is received, is switched over according to the switching command between speaker mode and microphone mode.
Further, the mode switch module is used for：Current working condition is detected, is switched over according to the working condition between speaker mode and microphone mode.
Further, the Second processing module includes signal amplification unit, and the signal amplification unit is used for：The electric signal of the acoustic-electric bidrectional transducer output is received, and processing is amplified to the electric signal.
The sound processing method of the embodiment of the present invention, pass through the handover operation between speaker mode and microphone mode, electroacoustic conversion is carried out by acoustic-electric bidrectional transducer in loudspeaker mode and realizes loudspeaker function, acoustic-electric conversion is carried out by acoustic-electric bidrectional transducer under microphone mode and realizes microphone function, so that loudspeaker function and microphone function are merged, a transducer is multiplexed equivalent to loudspeaker and microphone, realize the integrated design of loudspeaker and microphone, so as to reduce the parts in terminal, and then reduce space-consuming, be advantageous to the miniaturization of terminal particularly mobile terminal, and greatly reduce cost.
Brief description of the drawings
Fig. 1 is the structural representation of the moving-coil type transducer of coil-moving speaker in the prior art；
Fig. 2 is the structural representation of the moving-coil type transducer of moving-coil microphone in the prior art；
Fig. 3 is the flow chart of the sound processing method of the embodiment of the present invention；
Fig. 4 is the module diagram of the sound processing apparatus of the embodiment of the present invention；
Fig. 5 is the module diagram of the Second processing module of the sound processing apparatus of the embodiment of the present invention；
Fig. 6 be one embodiment of the invention sound processing apparatus as loudspeaker when signal transmission schematic diagram；
Fig. 7 be one embodiment of the invention sound processing apparatus as microphone when signal transmission schematic diagram.
The realization, functional characteristics and advantage of the object of the invention will be described further referring to the drawings in conjunction with the embodiments.
Embodiment
In order that technical problems, technical solutions and advantages to be solved are clearer, clear, below in conjunction with drawings and examples, the present invention will be described in further detail.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not intended to limit the present invention.
Referring to Fig. 3, the sound processing method of the embodiment of the present invention is proposed, the described method comprises the following steps：
S11, switched between speaker mode and microphone mode.
Alternatively, switching command is received, is switched over according to switching command between speaker mode and microphone mode.For example, after receiving switching command, judgement is currently at speaker mode or microphone mode；When in the speaker mode, microphone mode is switched to from speaker mode；When in microphone mode, speaker mode is switched to from microphone mode.And for example, switching command includes the first switching command and the second switching command, when receiving the first switching command, into speaker mode；When receiving the second switching command, into microphone mode.
Alternatively, current working condition is detected, is switched over according to working condition between speaker mode and microphone mode.For example, working condition includes the first working condition and the second working condition, when detect be currently at the first working condition (such as video broadcasting condition, music state, recording broadcasting state, RINGING state) when, into speaker mode；When detect be currently at the second working condition (such as recording state, talking state) when, into microphone mode.The judgement of state can be operated by detecting the application currently enabled.
Further, it is also possible to the switching of two patterns is realized using other manner.For example, when the electric signal input end for detecting acoustic-electric bidrectional transducer has electric signal input, then into speaker mode；Otherwise, into microphone mode.It will not enumerate and repeat herein.
S12, when entering speaker mode, control acoustic-electric bidrectional transducer receives electric signal, and is exported after the electric signal is converted into voice signal.
When entering speaker mode, acoustic-electric bidrectional transducer is changed into converting electrical signals to the electroacoustic transducer of voice signal, the electric signal of other sound processing units (such as digital analog converter) transmission of receiving terminal, and exported after by electromagnetic induction (or other transfer principles of prior art) converting electrical signals to voice signal, sound is played out, realizes loudspeaker function.
S13, when entering microphone mode, control acoustic-electric bidrectional transducer collected sound signal, and exported after the voice signal is converted into electric signal.
When entering microphone mode, acoustic-electric bidrectional transducer is changed into the acoustical-electrical transducer that voice signal can be converted to electric signal, collected sound signal, and exported after by electromagnetic induction (or other transfer principles of prior art) voice signal being converted into electric signal, the electric signal that other sound processing units of terminal export to acoustic-electric bidrectional transducer is stored as recording file after being handled (such as analog-to-digital conversion) or is transferred to external equipment, realizes microphone function.
Further, processing also is amplified to the electric signal of acoustic-electric bidrectional transducer output, on the premise of signal to noise ratio (SNR) is kept as far as possible, to adjust the gain of electric signal, reach signal enhancing effect.
Further, processing is also optimized to the electric signal after enhanced processing, including echo suppresses, noise eliminates, distorsion is protected etc., to improve signal quality.
Alternatively, the acoustic-electric bidrectional transducer is moving-coil type transducer, can directly use the moving-coil type transducer of traditional coil-moving speaker or moving-coil microphone, or carry out appropriate reconstruction to it.Moving-coil type transducer includes magnetic circuit system and vibrational system, and by vibrational system collected sound signal or output voice signal, electromagnetic induction is realized by the cooperation of magnetic circuit system and vibrational system, realizes that acoustic-electric conversion and electroacoustic are changed by electromagnetic induction.
It will be understood by those skilled in the art that in addition to using the transducer of moving-coil structure, other structures of the prior art (such as transformer device structure) can also be used, as long as the bi-directional conversion of acoustic-electric and electroacoustic can be realized.
The sound processing method of the embodiment of the present invention, pass through the handover operation between speaker mode and microphone mode, electroacoustic conversion is carried out by acoustic-electric bidrectional transducer in loudspeaker mode and realizes loudspeaker function, acoustic-electric conversion is carried out by acoustic-electric bidrectional transducer under microphone mode and realizes microphone function, so that loudspeaker function and microphone function are merged, a transducer is multiplexed equivalent to loudspeaker and microphone, so as to reduce the parts in terminal, and then reduce space-consuming, be advantageous to the miniaturization of terminal particularly mobile terminal, and greatly reduce cost.
Referring to Fig. 4, it is proposed the sound processing apparatus of the embodiment of the present invention, described device includes mode switch module 101, first processing module 102, Second processing module 103 and acoustic-electric bidrectional transducer 104, and acoustic-electric bidrectional transducer 104 can realize the bi-directional conversion of acoustic-electric and electroacoustic, wherein：
Mode switch module 101：For being switched between speaker mode and microphone mode.
Alternatively, mode switch module 101 receives switching command, is switched over according to switching command between speaker mode and microphone mode.For example, after receiving switching command, judgement is currently at speaker mode or microphone mode；When in the speaker mode, microphone mode is switched to from speaker mode；When in microphone mode, speaker mode is switched to from microphone mode.And for example, switching command includes the first switching command and the second switching command, when receiving the first switching command, into speaker mode；When receiving the second switching command, into microphone mode.
Alternatively, mode switch module 101 detects current working condition, is switched over according to working condition between speaker mode and microphone mode.For example, working condition includes the first working condition and the second working condition, when detect be currently at the first working condition (such as video broadcasting condition, music state, recording broadcasting state, RINGING state) when, into speaker mode；When detect be currently at the second working condition (such as recording state, talking state) when, into microphone mode.Mode switch module 101 can be operated the judgement of state by detecting the application currently enabled.
In addition, mode switch module 101 can also realize the switching of two patterns using other manner.For example, when the electric signal input end for detecting acoustic-electric bidrectional transducer 104 has electric signal input, then into speaker mode；Otherwise, into microphone mode.It will not enumerate and repeat herein.
In certain embodiments, when being switched to speaker mode, mode switch module 101 closes Second processing module 103, starts first processing module 102；When being switched to microphone mode, mode switch module 101 closes first processing module 102, starts Second processing module 103.
In further embodiments, when being switched to speaker mode, mode switch module 101 disconnects Second processing module 103 and acoustic-electric realizes the connection of transducer 104, connects first processing module 102 and acoustic-electric bidrectional transducer 104；When being switched to microphone mode, mode switch module 101 disconnects the connection of first processing module 102 and acoustic-electric bidrectional transducer 104, connects Second processing module 103 and acoustic-electric bidrectional transducer 104.Now, acoustic-electric bidrectional transducer 104 can be connected by a single-pole double-throw switch (SPDT) with first processing module 102 and Second processing module 103, and mode switch module 101 is realized the disconnection of acoustic-electric bidrectional transducer 104 and first processing module 102 and Second processing module 103 and connected by controlling the single-pole double-throw switch (SPDT).
First processing module 101：For when entering speaker mode, control acoustic-electric bidrectional transducer 104 to receive electric signal, and is exported after converting electrical signals to voice signal.
When entering speaker mode, acoustic-electric bidrectional transducer 104 is changed into converting electrical signals to the electroacoustic transducer of voice signal.
Alternatively, first processing module 102 sends control signal to acoustic-electric bidrectional transducer 104, control the electric signal of other sound processing units (such as digital analog converter) transmission of the receiving terminal of acoustic-electric bidrectional transducer 104, and exported after by electromagnetic induction (or other transfer principles of prior art) converting electrical signals to voice signal, sound is played, realizes loudspeaker function.
Alternatively, the electric signal of other sound processing units (such as digital analog converter) transmission of the receiving terminal of first processing module 102, and send electric signal to acoustic-electric bidrectional transducer 104, acoustic-electric bidrectional transducer 104 receives electric signal, and exported after by electromagnetic induction (or other transfer principles of prior art) converting electrical signals to voice signal, sound is played, realizes loudspeaker function.
Second processing module 103：For when entering microphone mode, controlling the collected sound signal of acoustic-electric bidrectional transducer 104, and exported after voice signal is converted into electric signal.
When entering microphone mode, acoustic-electric bidrectional transducer 104 is changed into the acoustical-electrical transducer that voice signal can be converted to electric signal.
Second processing module 103 realizes that transducer 104 sends control signal to acoustic-electric, control the collected sound signal of acoustic-electric bidrectional transducer 104, and exported after by electromagnetic induction (or other transfer principles of prior art) voice signal being converted into electric signal, Second processing module 103 receives the electric signal of the output of acoustic-electric bidrectional transducer 104, the electric signal is sent to other sound processing units of terminal, the electric signal exported by other sound processing units to acoustic-electric bidrectional transducer is stored as recording file after being handled (such as analog-to-digital conversion) or is transferred to external equipment, realize microphone function.In certain embodiments, electric signal can also be directly output to other sound processing units of terminal by acoustic-electric bidrectional transducer 104.
Further, as shown in figure 5, Second processing module 103 includes signal amplification unit 113, the signal amplification unit 113 is used for：The electric signal of the output of acoustic-electric bidrectional transducer 104 is received, and processing is amplified to electric signal, on the premise of signal to noise ratio (SNR) is kept as far as possible, the gain of electric signal is adjusted, to reach signal enhancing effect.
Further, second processing unit 103 also includes optimization processing unit 123, and the optimization processing unit 123 is used for：The electric signal of reception signal amplifying unit output, and processing is optimized to the electric signal, including echo suppresses, noise eliminates, distorsion is protected etc., to improve signal quality, then export the electric signal after optimization processing.
The sound processing apparatus of the embodiment of the present invention, it can both be used as loudspeaker to carry out electroacoustic conversion, and realize sound-playing function；Microphone can be used as to carry out acoustic-electric conversion again, realize sound recording function.
As shown in fig. 6, for an embodiment sound processing apparatus as loudspeaker when signal transmit schematic diagram.Wherein, the electric signal of other sound processing units output of the receiving terminal of first processing module 102, and electric signal output is exported to acoustic-electric bidrectional transducer 104, acoustic-electric bidrectional transducer 104 after converting electrical signals to voice signal.In the present embodiment, mode switch module 101 can be by detecting whether first processing module 102 receives electric signal to carry out pattern switching, when detecting that first processing module 102 receives electric signal, then into speaker mode, otherwise into microphone mode.
As shown in fig. 7, for an embodiment sound processing apparatus as microphone when signal transmit schematic diagram.Wherein, the collected sound signal of acoustic-electric bidrectional transducer 104, and being exported after voice signal is converted into electric signal to Second processing module 103, Second processing module 103 are amplified the other sound processing units exported after optimization processing to terminal to voice signal.
Alternatively, the acoustic-electric bidrectional transducer 104 is moving-coil type transducer, can directly use the moving-coil type transducer of traditional coil-moving speaker or moving-coil microphone, or carry out appropriate reconstruction to it.Moving-coil type transducer includes magnetic circuit system and vibrational system, and by vibrational system collected sound signal or output voice signal, electromagnetic induction is realized by the cooperation of magnetic circuit system and vibrational system, realizes that acoustic-electric conversion and electroacoustic are changed by electromagnetic induction.
It will be understood by those skilled in the art that in addition to using the transducer of moving-coil structure, other structures of the prior art (such as transformer device structure) can also be used, as long as the bi-directional conversion of acoustic-electric and electroacoustic can be realized.
The sound processing apparatus of the embodiment of the present invention, pass through the handover operation between speaker mode and microphone mode, electroacoustic conversion is carried out by acoustic-electric bidrectional transducer 104 in loudspeaker mode and realizes loudspeaker function, acoustic-electric conversion is carried out by acoustic-electric bidrectional transducer 104 under microphone mode and realizes microphone function, so that loudspeaker function and microphone function are merged, a transducer is multiplexed equivalent to loudspeaker and microphone, so as to reduce the parts in terminal, and then reduce space-consuming, be advantageous to the miniaturization of terminal particularly mobile terminal, and greatly reduce cost.
The sound processing apparatus of the embodiment of the present invention, both can apply to the mobile terminals such as mobile phone, flat board, can apply to the fixed terminals such as computer, television set again.
By taking mobile phone as an example, generally use coil-moving speaker and condenser type or post level body formula microphone in mobile phone, using the sound processing apparatus of the embodiment of the present invention, the transducer of condenser type or post level body formula microphone can be omitted, need to only transformation be optimized to the moving-coil type transducer of coil-moving speaker, so that loudspeaker and the improved moving-coil type transducer of microphone multiplex optimization, acoustic-electric bidrectional transducer that the moving-coil type transducer after the Optimizing Reconstruction can describe as above-described embodiment.
Moving-coil type transducer can start with from the following aspect as shown in figure 1, when optimizing transformation to it：The ring of vibrational system is adjusted with the damping characteristic for determining chip, increases sensitivity；Magnetic field intensity H, magnetic conductive board magnetic conductivity η and the magnetic induction density B of coil to the permanent magnet of magnetic circuit system are adjusted, the direction of adjustment is the value for increasing H, η and B, purpose is to increase the magnetic flux phi in coil movement region, so that caused induced-current i meets the requirement of electroacoustic conversion/acoustic-electric conversion as far as possible after power F and coil cutting magnetic field that coil is subject in magnetic field.
Electroacoustic conversion equation be：
F=BLi (formula 1)
Sound field equation is：
Wherein：
γ：The ratio between specific heat at constant pressure and specific heat at constant volume, it is constant 1.40 in air；
P0：One standard atmospheric pressure, it is constant under the conditions of 25 DEG C of normal temperature；
p：The acoustic pressure power that vibrating diaphragm is born；
ρ0：Atmospheric density, it is constant under the conditions of 25 DEG C of normal temperature；
v：Vibrating diaphragm translational speed；
t：Vibrating diaphragm traveling time；
L：Vibrating diaphragm mobile vector=(x, y, z)；
In addition, the two physical quantitys of v and t can be manually set in simulations, can accurately be measured by laser range finder in actually measuring；The actual displacement of vibrating diaphragm central point is measured as x using laser range finder；If simplified according to point sound source, it is believed that y=0 and z=0；
F=BLi is brought into formula 2 as sound pressure p, releases second order local derviation equation group formula：
The formula is i and x 2 rank partial derivative relations
Can be in the hope of the two physical quantitys of induced-current i in vibrating diaphragm central point displacement x and coil, so as to set up the Mathematics Proof of the vibrational system sensitivity adjustment of transducer using formula 3：
1. if final induced-current i is too small, minimum range x of the vibrating diaphragm with moving winding cutting magnetic induction line is instead released under the conditions of i is increased using formula 3；
2. the power F that at this moment coil bears is calculated by formula 1；
3. tri- physical quantitys of i, x and F are carried out with the inspection of acoustic element, the every binding target (life-span, stress etc.) whether they meet the mechanics of materials is investigated；
4. recycling emulation or object test to carry out acoustics checking, examine whether the design of every acoustics index reaches necessary acoustic-electric conversion effect.
According to above-mentioned Optimizing Reconstruction principle, moving-coil type transducer as shown in Figure 1 can be transformed as follows：
1) cone, dust cap material are replaced by more frivolous material, to reduce vibrating diaphragm weight, under being acted in same sound pressure, distance of the increase vibrating diaphragm with moving winding cutting magnetic circuit magnetic field；
2) ring, the damped coefficient of core fixing ring are reduced, to increase the sensitivity of vibrational system, under being acted in same sound pressure, distance of the increase vibrating diaphragm with moving winding cutting magnetic circuit magnetic field；
3) magnetic conductivity of magnetic conductive board in magnetic circuit system, or the magnetic field intensity of adjustment permanent magnet are adjusted, after acoustic-electric conversion requirements are met, during keeping electroacoustic conversion work, the vibrations stroke x of the conduct distance of coil, i.e. vibrating diaphragm.
More than some adjustment be all based on what the principle of formula 1 and formula 3 determined, while need to emulate and survey repeatedly to carry out parameter optimization, while performance requirement with regard to electroacoustic conversion can be met, there is provided sufficiently large sensitivity, complete the function that acoustic-electric is changed.
Using the sound processing apparatus and method of the embodiment of the present invention, transformation can be optimized to the moving-coil type transducer of the coil-moving speaker of existing mobile phone, the performance requirement of electroacoustic conversion can be met by being transform as, and can meets the acoustic-electric bidrectional transducer of the performance requirement of acoustic-electric conversion, and provide the function of switching between speaker mode and microphone mode, electroacoustic conversion is carried out by acoustic-electric bidrectional transducer in loudspeaker mode and realizes loudspeaker function, acoustic-electric conversion is carried out by acoustic-electric bidrectional transducer under microphone mode and realizes microphone function, so that loudspeaker function and microphone function are merged, so that loudspeaker and microphone are multiplexed a transducer, and eliminate the transducer of the higher condenser type of cost in mobile phone or post level body formula microphone.Both cost is reduced, has saved space again, is advantageous to the lightening development of mobile phone, or places other devices using the space vacateed and to be that mobile phone increases more multi-functional.
Through the above description of the embodiments, those skilled in the art can be understood that above-described embodiment method can add the mode of required general hardware platform to realize by software, it can certainly be realized by hardware, but the former is more preferably embodiment in many cases.Based on such understanding, the part that technical scheme substantially contributes to prior art in other words can be embodied in the form of software product, the computer software product is stored in a storage medium (such as ROM/RAM, magnetic disc, CD), including some instructions make it that a station terminal equipment (can be mobile phone, computer, server, air conditioner, or network equipment etc.) perform method described in each embodiment of the present invention.
Above by reference to the preferred embodiments of the present invention have been illustrated, not thereby limit to the interest field of the present invention.Those skilled in the art do not depart from the scope of the present invention and essence, can have a variety of flexible programs to realize the present invention, can be used for another embodiment for example as the feature of one embodiment and obtain another embodiment.All all any modification, equivalent and improvement made within the technical concept with the present invention, all should be within the interest field of the present invention.
Claims (10)
1. a kind of sound processing method, it is characterised in that including step：
Switched between speaker mode and microphone mode；
When entering the speaker mode, control acoustic-electric bidrectional transducer receives electric signal, and by the electricity
Signal is exported after being converted to voice signal；
When entering the microphone mode, the acoustic-electric bidrectional transducer collected sound signal is controlled, and will
The voice signal is exported after being converted to electric signal.
2. sound processing method according to claim 1, it is characterised in that described in speaker mode
Switched between microphone mode including：Switching command is received, according to the switching command in loudspeaker
Switched between pattern and microphone mode.
3. sound processing method according to claim 1, it is characterised in that described in speaker mode
Switched between microphone mode including：Current working condition is detected, is existed according to the working condition
Switched between speaker mode and microphone mode.
4. according to the sound processing method described in claim any one of 1-3, it is characterised in that described and general
The voice signal also includes after being converted to the step of being exported after electric signal：It is two-way to the acoustic-electric to change
The electric signal of energy device output is amplified processing.
5. according to the sound processing method described in claim any one of 1-3, it is characterised in that the acoustic-electric
Bidrectional transducer is moving-coil type transducer.
A kind of 6. sound processing apparatus, it is characterised in that including mode switch module, first processing module,
Second processing module and acoustic-electric bidrectional transducer, wherein：
The mode switch module, for being switched between speaker mode and microphone mode；
The first processing module, for when entering the speaker mode, controlling the acoustic-electric is two-way to change
Energy device receives electric signal, and is exported after the electric signal is converted into voice signal；
The Second processing module, for when entering the microphone mode, controlling the acoustic-electric is two-way to change
Energy device collected sound signal, and exported after the voice signal is converted into electric signal.
7. sound processing apparatus according to claim 6, it is characterised in that the mode switch module
For：Switching command is received, is carried out according to the switching command between speaker mode and microphone mode
Switching.
8. sound processing apparatus according to claim 6, it is characterised in that the mode switch module
For：Detect current working condition, according to the working condition speaker mode and microphone mode it
Between switch over.
9. according to the sound processing apparatus described in claim any one of 6-8, it is characterised in that described second
Processing module includes signal amplification unit, and the signal amplification unit is used for：Receive the two-way transducing of the acoustic-electric
The electric signal of device output, and processing is amplified to the electric signal.
10. according to the sound processing apparatus described in claim any one of 6-8, it is characterised in that the acoustic-electric
Bidrectional transducer is moving-coil type transducer.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610329659.0A CN107404683A (en) | 2016-05-18 | 2016-05-18 | Sound processing method and device |
| PCT/CN2016/089183 WO2017197742A1 (en) | 2016-05-18 | 2016-07-07 | Method and device for audio processing |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610329659.0A CN107404683A (en) | 2016-05-18 | 2016-05-18 | Sound processing method and device |
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| CN107404683A true CN107404683A (en) | 2017-11-28 |
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| CN201610329659.0A Withdrawn CN107404683A (en) | 2016-05-18 | 2016-05-18 | Sound processing method and device |
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| CN (1) | CN107404683A (en) |
| WO (1) | WO2017197742A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112584291A (en) * | 2019-09-27 | 2021-03-30 | 苹果公司 | Dual-function transducer |
| CN113099331A (en) * | 2021-03-26 | 2021-07-09 | 深圳市锐尔觅移动通信有限公司 | Microphone assembly, audio signal adjusting method thereof and electronic equipment |
| US11785392B2 (en) | 2019-09-27 | 2023-10-10 | Apple Inc. | Dual function transducer |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1879393A (en) * | 2003-11-11 | 2006-12-13 | 马帝克公司 | Two-way communications device having a single transducer |
| CN101466062A (en) * | 2008-12-31 | 2009-06-24 | 清华大学深圳研究生院 | Calibration method and apparatus for ear plug type transducer for ear acoustic emission audition detection |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070058831A1 (en) * | 2005-09-13 | 2007-03-15 | Jin Rie | Ear ring type two way wireless mini-ear piece |
-
2016
- 2016-05-18 CN CN201610329659.0A patent/CN107404683A/en not_active Withdrawn
- 2016-07-07 WO PCT/CN2016/089183 patent/WO2017197742A1/en active Application Filing
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1879393A (en) * | 2003-11-11 | 2006-12-13 | 马帝克公司 | Two-way communications device having a single transducer |
| CN101466062A (en) * | 2008-12-31 | 2009-06-24 | 清华大学深圳研究生院 | Calibration method and apparatus for ear plug type transducer for ear acoustic emission audition detection |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112584291A (en) * | 2019-09-27 | 2021-03-30 | 苹果公司 | Dual-function transducer |
| CN112584291B (en) * | 2019-09-27 | 2022-05-27 | 苹果公司 | Dual function transducer |
| US11785392B2 (en) | 2019-09-27 | 2023-10-10 | Apple Inc. | Dual function transducer |
| CN113099331A (en) * | 2021-03-26 | 2021-07-09 | 深圳市锐尔觅移动通信有限公司 | Microphone assembly, audio signal adjusting method thereof and electronic equipment |
| CN113099331B (en) * | 2021-03-26 | 2023-05-16 | 深圳市锐尔觅移动通信有限公司 | Microphone assembly, audio signal adjusting method thereof and electronic equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2017197742A1 (en) | 2017-11-23 |
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