CN108370476A - The method and device of microphone, audio frequency process - Google Patents
The method and device of microphone, audio frequency process Download PDFInfo
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- CN108370476A CN108370476A CN201680004403.0A CN201680004403A CN108370476A CN 108370476 A CN108370476 A CN 108370476A CN 201680004403 A CN201680004403 A CN 201680004403A CN 108370476 A CN108370476 A CN 108370476A
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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
- H04R19/00—Electrostatic transducers
- H04R19/04—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
- H04R3/00—Circuits for transducers, loudspeakers or microphones
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- Acoustics & Sound (AREA)
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- Circuit For Audible Band Transducer (AREA)
Abstract
The method and device of a kind of microphone, audio frequency process, the reception for improving sound and processing quality.Microphone includes：First sound transducer (101), the voice signal for receiving the first sound pressure level range, and voice signal is converted into analog electrical signal；Second sound sensor (102), the voice signal for receiving the second sound pressure level range, and voice signal is converted into analog electrical signal；Wherein, the first maximum sound pressure level of the first sound pressure level range is more than the second maximum sound pressure level of the second sound pressure level range.
Description
The present invention relates to communication and computer disposal field more particularly to the method and devices of microphone, audio processing.
With the development of electronic technology, the equipment such as mobile terminal, tablet computer, sound equipment emerge one after another.These equipment all have the function of sound collection, that is, all include microphone.For microphone because of the difference of internal hardware structure, the performance for acquiring sound is also different.When being in noisy environment, wind noise is arbitrarily downgraded very big, it is easy to beyond the maximum sound pressure level that microphone can normally receive, the voice signal received be caused phenomena such as distorsion occur.
Summary of the invention
To overcome the problems in correlation technique, the present invention provides the method and device of a kind of microphone, audio processing.
According to a first aspect of the embodiments of the present invention, a kind of microphone is provided, comprising:
Voice signal for receiving the voice signal of the first sound pressure level range, and is converted to analog electrical signal by the first sound transducer；
Voice signal for receiving the voice signal of the second sound pressure level range, and is converted to analog electrical signal by second sound sensor；Wherein, the first maximum sound pressure level of the first sound pressure level range is greater than the second maximum sound pressure level of the second sound pressure level range.
The technical solution that the embodiment of the present invention provides can include the following benefits: the present embodiment receives voice signal by the sound transducer of two kinds of different sizes, applicable sound pressure level range is wider, it realizes and obtains the voice signal of high quality in larger sound pressure grade range, be suitable for more application scenarios.
In one embodiment, the microphone further include:
First amplifier is connect, for amplifying to analog electrical signal with first sound transducer；
Second amplifier is connect, for amplifying to analog electrical signal with the second sound sensor.
The technical solution that the embodiment of the present invention provides can include the following benefits: follow-up signal processing quality can be improved by signal enhanced processing in the present embodiment.
In one embodiment, the microphone further include:
First analog-digital converter is connect with first sound transducer or the first amplifier, for analog electrical signal to be converted to digital electric signal, exports the first digital electric signal；
Second analog-digital converter is connect with the second sound sensor or the second amplifier, for analog electrical signal to be converted to digital electric signal, exports the second digital electric signal.
The technical solution that the embodiment of the present invention provides can include the following benefits: the present embodiment helps to improve follow-up signal processing quality by being converted into digital signal.
In one embodiment, the microphone further include:
Digital signal processor is connect with the first analog-digital converter and the second analog-digital converter, for exporting digital electric signal all the way according to the first digital electric signal and the second digital electric signal.
The technical solution that the embodiment of the present invention provides can include the following benefits: the present embodiment can select the preferable digital electric signal output of quality all the way from the first digital electric signal and the second digital electric signal, improve the quality of the digital electric signal of output.
In one embodiment, the second maximum sound pressure level of the second sound pressure level range is equal to or more than the first minimum sound pressure level of the first sound pressure level range.
The technical solution that the embodiment of the present invention provides can include the following benefits: the sound pressure level range seamless connection of the sound transducer of two specifications in the present embodiment can cover biggish sound pressure level range, can receive the voice signal of high quality in a big way.
According to a second aspect of the embodiments of the present invention, a kind of method of audio processing is provided, comprising:
Receive the first digital electric signal and the second digital electric signal, wherein, first digital electric signal is that the voice signal received by the first sound transducer is converted to, second digital electric signal is that the voice signal received by second sound sensor is converted to, first sound transducer works in the first sound pressure level range, for second sound working sensor in the second sound pressure level range, the first maximum sound pressure level of the first sound pressure level range is greater than the second maximum sound pressure level of the second sound pressure level range；
According to the first digital electric signal and the second digital electric signal, digital electric signal all the way is exported.
The technical solution that the embodiment of the present invention provides can include the following benefits: the present embodiment obtains the digital electric signal of two-way audio from the sound transducer of two different sizes, it can get the digital electric signal of larger sound pressure grade range, so that the quality of the digital electric signal of output is higher.
In one embodiment, described according to the first digital electric signal and the second digital electric signal, export digital electric signal all the way, comprising:
When belonging between the first maximum sound pressure level of the first sound pressure level range and the second maximum sound pressure level of the second sound pressure level range when the sound pressure level of the first digital electric signal and the second digital electric signal, the first digital electric signal is exported；
When belonging between the first minimum sound pressure level of the first sound pressure level range and the second minimum sound pressure level of the second sound pressure level range when the sound pressure level of the first digital electric signal and the second digital electric signal, the second digital electric signal is exported.
The technical solution that the embodiment of the present invention provides can include the following benefits: for the present embodiment for the different higher output of digital electric signal all the way of sound pressure level range selection mass, the sound quality of acquisition is preferable.
In one embodiment, the second maximum sound pressure level of the second sound pressure level range is greater than the first minimum sound pressure level of the first sound pressure level range；
It is described according to the first digital electric signal and the second digital electric signal, output digital electric signal all the way, comprising:
When belonging between the first minimum sound pressure level of the first sound pressure level range and the second maximum sound pressure level of the second sound pressure level range when the sound pressure level of the first digital electric signal and the second digital electric signal, digital electric signal output all the way is selected from the first digital electric signal and the second digital electric signal.
The technical solution that the embodiment of the present invention provides can include the following benefits: for the present embodiment for the different higher output of digital electric signal all the way of sound pressure level range selection mass, the sound quality of acquisition is preferable.
It is in one embodiment, described that digital electric signal output all the way is selected from the first digital electric signal and the second digital electric signal, comprising:
Digital electric signal output all the way is randomly choosed from the first digital electric signal and the second digital electric signal；Or
The second digital electric signal is selected to export from the first digital electric signal and the second digital electric signal；Or
The higher output of digital electric signal all the way of signal-to-noise ratio is selected from the first digital electric signal and the second digital electric signal.
The technical solution that the embodiment of the present invention provides can include the following benefits:
In one embodiment, the second maximum sound pressure level of the second sound pressure level range is greater than the first minimum sound pressure level of the first sound pressure level range；
It is described according to the first digital electric signal and the second digital electric signal, output digital electric signal all the way, comprising:
When belonging between the first minimum sound pressure level of the first sound pressure level range and the second maximum sound pressure level of the second sound pressure level range when the sound pressure level of the first digital electric signal and the second digital electric signal, first digital electric signal and the second digital electric signal are smoothly synthesized, the digital electric signal all the way after output smoothing synthesis.
The technical solution that the embodiment of the present invention provides can include the following benefits: for the present embodiment for the different higher output of digital electric signal all the way of sound pressure level range selection mass, the sound quality of acquisition is preferable.
According to a third aspect of the embodiments of the present invention, a kind of device of audio processing is provided, comprising:
Receiving module, for receiving the first digital electric signal and the second digital electric signal, wherein, first digital electric signal is that the voice signal received by the first sound transducer is converted to, second digital electric signal is that the voice signal received by second sound sensor is converted to, first sound transducer works in the first sound pressure level range, for second sound working sensor in the second sound pressure level range, the first maximum sound pressure level of the first sound pressure level range is greater than the second maximum sound pressure level of the second sound pressure level range；
Processing module, for exporting digital electric signal all the way according to the first digital electric signal and the second digital electric signal.
In one embodiment, the processing module includes:
First processing submodule, when for belonging between the first maximum sound pressure level of the first sound pressure level range and the second maximum sound pressure level of the second sound pressure level range when the sound pressure level of the first digital electric signal and the second digital electric signal, exports the first digital electric signal；
Second processing submodule when for belonging between the first minimum sound pressure level of the first sound pressure level range and the second minimum sound pressure level of the second sound pressure level range when the sound pressure level of the first digital electric signal and the second digital electric signal, exports the second digital electric signal.
In one embodiment, the second maximum sound pressure level of the second sound pressure level range is greater than the first minimum sound pressure level of the first sound pressure level range；
The processing module includes:
Third handles submodule, when for belonging between the first minimum sound pressure level of the first sound pressure level range and the second maximum sound pressure level of the second sound pressure level range when the sound pressure level of the first digital electric signal and the second digital electric signal, digital electric signal output all the way is selected from the first digital electric signal and the second digital electric signal.
In one embodiment, the third processing submodule randomly chooses digital electric signal output all the way from the first digital electric signal and the second digital electric signal；Alternatively, the second digital electric signal is selected to export from the first digital electric signal and the second digital electric signal；Alternatively, selecting the higher digital electric signal all the way of signal-to-noise ratio from the first digital electric signal and the second digital electric signal
Output.
In one embodiment, the second maximum sound pressure level of the second sound pressure level range is greater than the first minimum sound pressure level of the first sound pressure level range；
The processing module includes:
Fourth process submodule, when for belonging between the first minimum sound pressure level of the first sound pressure level range and the second maximum sound pressure level of the second sound pressure level range when the sound pressure level of the first digital electric signal and the second digital electric signal, first digital electric signal and the second digital electric signal are smoothly synthesized, the digital electric signal all the way after output smoothing synthesis.
According to a fourth aspect of the embodiments of the present invention, a kind of device of audio processing is provided, comprising:
Processor；
Memory for storage processor executable instruction；
Wherein, the processor is configured to:
Receive the first digital electric signal and the second digital electric signal, wherein, first digital electric signal is that the voice signal received by the first sound transducer is converted to, second digital electric signal is that the voice signal received by second sound sensor is converted to, first sound transducer works in the first sound pressure level range, for second sound working sensor in the second sound pressure level range, the first maximum sound pressure level of the first sound pressure level range is greater than the second maximum sound pressure level of the second sound pressure level range；
According to the first digital electric signal and the second digital electric signal, digital electric signal all the way is exported.
It should be understood that above general description and following detailed description be only it is exemplary and explanatory, the present invention can not be limited.
The drawings herein are incorporated into the specification and forms part of this specification, and illustrates embodiments consistent with the invention, and is used to explain the principle of the present invention together with specification.
Fig. 1 is a kind of block diagram of microphone shown according to an exemplary embodiment.
Fig. 2 is a kind of block diagram of microphone shown according to an exemplary embodiment.
Fig. 3 is a kind of block diagram of microphone shown according to an exemplary embodiment.
Fig. 4 is a kind of block diagram of microphone shown according to an exemplary embodiment.
Fig. 5 is a kind of block diagram of microphone shown according to an exemplary embodiment.
Fig. 6 is a kind of schematic diagram of sound pressure level range shown according to an exemplary embodiment.
Fig. 7 is a kind of schematic diagram of sound pressure level range shown according to an exemplary embodiment.
Fig. 8 is a kind of flow chart of the method for audio processing shown according to an exemplary embodiment.
Fig. 9 is a kind of flow chart of the method for audio processing shown according to an exemplary embodiment.
Figure 10 is a kind of flow chart of the method for audio processing shown according to an exemplary embodiment.
Figure 11 is a kind of block diagram of the device of audio processing shown according to an exemplary embodiment.
Figure 12 is a kind of block diagram of processing module shown according to an exemplary embodiment.
Figure 13 is a kind of block diagram of processing module shown according to an exemplary embodiment.
Figure 14 is a kind of block diagram of processing module shown according to an exemplary embodiment.
Figure 15 is a kind of block diagram of device shown according to an exemplary embodiment.
Figure 16 is a kind of block diagram of device shown according to an exemplary embodiment.
Example embodiments are described in detail here, and the example is illustrated in the accompanying drawings.In the following description when referring to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings indicate the same or similar elements.Embodiment described in following exemplary embodiment does not represent all embodiments consistented with the present invention.On the contrary, they are only the examples of consistent with some aspects of the invention as detailed in the appended claims device and method.
In the related technology, the equipment such as mobile terminal, tablet computer acquire audio by microphone, realize the functions such as recording and voice input.Microphone usually only includes a sound transducer.The applicable sound pressure level of one sound transducer is limited in scope, and is difficult to adapt to the demand of plurality of application scenes.For example, being suitable for the sound transducer of general scene, the quality that voice is received under quiet indoor environment is preferable, but the user's sound of speaking received outdoors or under the noisy environments such as singing-hall is poor, it may appear that situations such as distorsion.Suitable for the sound transducer of the high sound pressure level muting sensitivity under noisy environment, the received voice signal under quiet indoor environment, since sensitivity is lower, so voice signal is second-rate.
To solve the above problems, the sound transducer of two kinds of specifications is arranged in the present embodiment in a microphone, the sound transducer of two kinds of specifications, which combines, is applicable to biggish sound pressure level range, and applicable application scenarios are also wider.
Fig. 1 is a kind of schematic device of microphone (MIC) shown according to an exemplary embodiment.Referring to Fig.1, which includes: the first sound transducer 101 and second sound sensor 102.
Voice signal for receiving the voice signal of the first sound pressure level range, and is converted to analog electrical signal by the first sound transducer 101.
Voice signal for receiving the voice signal of the second sound pressure level range, and is converted to analog electrical signal by second sound sensor 102；Wherein, the first maximum sound pressure level of the first sound pressure level range is greater than the second maximum sound pressure level of the second sound pressure level range.
Microphone in the present embodiment can be simulation microphone, such as analog MEMS (Micro EleCTRo Meganetic System, MEMS) microphone.First sound transducer 101 and second sound sensor 102 can use MEMS sensor.MEMS sensor includes combination of MEMS wafer and ASIC (Application Specific Integrated Circuit, specific integrated circuit) chip.Combination of MEMS wafer includes a rigid perforated back electrode (fixed backplate) and a piece of elastic silicon fiml (flexible membrane) as capacitor.Acoustic pressure is converted to capacitance variations by the elasticity silicon fiml.ASIC chip is converted into electric signal for detecting capacitance variations, relevant treatment device is sent to, such as baseband processor or amplifier.
By taking microphone is located in mobile terminal as an example, other audio processing devices in Mike's wind direction mobile terminal send the analog electrical signal of audio.Other audio processing devices in mobile terminal handle analog electrical signal.Other audio processing devices such as amplifier, analog-digital converter, digital signal processor in mobile terminal etc..
The sensor of high sound pressure level muting sensitivity can be used in first sound transducer 101, is suitable for noisy environment, can normally receive the voice signal of high sound pressure level, received voice signal is undistorted, that is, works in high sound pressure level.Second sound sensor 102
General sensor can be used, be suitable for normal environment, the voice signal of normal sound pressure level can be normally received, received voice signal is undistorted, that is, works in normal sound pressure level.First maximum sound pressure level of the first sound pressure level range is greater than the second maximum sound pressure level of the second sound pressure level range.In general, if the first maximum sound pressure level of the first sound pressure level range is greater than the second maximum sound pressure level of the second sound pressure level range, the first minimum sound pressure level of the first sound pressure level range is greater than the second minimum sound pressure level of the second sound pressure level range.
The first sound transducer 101 and second sound sensor 102 of different size are used in combination the present embodiment, can high quality reception larger sound pressure grade range voice signal, improve the quality of the voice signal received.The voice signal of high quality can be received in more scenes.
In one embodiment, as shown in Fig. 2, the microphone further include: the first amplifier 201 and the second amplifier 202.
First amplifier 201 is connect, for amplifying to analog electrical signal with first sound transducer 101.
Second amplifier 202 is connect, for amplifying to analog electrical signal with the second sound sensor 102.
First amplifier 201 can be integrated in a chip with first sound transducer 101, and the second amplifier 202 can be integrated in a chip with the second sound sensor 102.
The present embodiment amplifies processing to analog electrical signal by amplifier, facilitates the subsequent audio-frequency information for obtaining better quality.
In one embodiment, as shown in Figure 3 or Figure 4, the microphone further include: the first analog-digital converter 301 and the second analog-digital converter 302.
First analog-digital converter 301 is connect with first sound transducer 101 or the first amplifier 201, for analog electrical signal to be converted to digital electric signal, exports the first digital electric signal；
Second analog-digital converter 302 is connect with the second sound sensor 102 or the second amplifier 202, for analog electrical signal to be converted to digital electric signal, exports the second digital electric signal.
First analog-digital converter 301 can be integrated in a chip with first sound transducer 101 or the first analog-digital converter 301 is integrated in a chip with first sound transducer 101 and the first amplifier 201.Second analog-digital converter 302 can be integrated in a chip with the second sound sensor 102 or the second analog-digital converter 302 is integrated in a chip with the second sound sensor 102 and the second amplifier 202.
Microphone including analog-digital converter can be digital microphone, such as digital MEMS microphone.
The present embodiment not only can be using simulation microphone, but also can use digital microphone.By taking microphone is located in mobile terminal as an example, other audio processing devices in Mike's wind direction mobile terminal send the digital electric signal of audio.Other audio processing device logarithm word electric signals in mobile terminal are handled.Other audio processing device word signal processors in full in mobile terminal etc..The structure of other audio processing devices of mobile terminal can be simplified.
In one embodiment, as shown in figure 5, the microphone further include: digital signal processor 501.
Digital signal processor 501 is connect with the first analog-digital converter 101 and the second analog-digital converter 102, for exporting digital electric signal all the way according to the first digital electric signal and the second digital electric signal.
Fig. 5 is the example based on Fig. 4.Can also be in conjunction with the example of Fig. 3, the present embodiment is not shown.
Microphone exports digital electric signal all the way by digital signal processor 501 and simplifies in mobile terminal to mobile terminal
The structure of other audio processing devices, other audio processing devices can not need to be processed according to the first digital electric signal and the second digital electric signal, but directly to this, digital electric signal is processed all the way.
The present embodiment passes through the processing of digital signal processor 501, and the signal quality with higher of digital electric signal all the way of output is suitable for more application scenarios.
In one embodiment, the second maximum sound pressure level of the second sound pressure level range is equal to or more than the first minimum sound pressure level of the first sound pressure level range.
As shown in Figure 6 and Figure 7, the second sound pressure level range and the first sound pressure level range seamless connection link up and construct wider range of sound pressure level range.The present embodiment can within the scope of biggish sound pressure level high quality reception voice signal, keep voice signal undistorted.It realizes and normally receives voice signal in plurality of application scenes.
The internal structure of microphone is described above, multi-channel sound signal can be received by the sensor of plurality of specifications.But the equipment such as mobile terminal finally only use voice signal all the way, so needing to obtain voice signal all the way according to multi-channel sound signal.The method for being described below to obtain voice signal all the way.
Fig. 8 is a kind of flow chart of the method for audio processing shown according to an exemplary embodiment, as shown in figure 8, this method can be realized by digital signal processor, comprising the following steps:
In step 801, receive the first digital electric signal and the second digital electric signal, wherein, first digital electric signal is that the voice signal received by the first sound transducer is converted to, second digital electric signal is that the voice signal received by second sound sensor is converted to, first sound transducer works in the first sound pressure level range, for second sound working sensor in the second sound pressure level range, the first maximum sound pressure level of the first sound pressure level range is greater than the second maximum sound pressure level of the second sound pressure level range.
In step 802, according to the first digital electric signal and the second digital electric signal, digital electric signal all the way is exported.
In the present embodiment, digital signal processor can be located in microphone, can also be located in other audio processing devices of equipment such as mobile terminal.Digital signal processor is used to obtain signal all the way according to the first digital electric signal and the second digital electric signal this two paths of signals.
In one embodiment, step 802 includes: step A1 or step A2.
In step A1, when belonging between the first maximum sound pressure level of the first sound pressure level range and the second maximum sound pressure level of the second sound pressure level range when the sound pressure level of the first digital electric signal and the second digital electric signal, the first digital electric signal is exported.
In step A2, when belonging between the first minimum sound pressure level of the first sound pressure level range and the second minimum sound pressure level of the second sound pressure level range when the sound pressure level of the first digital electric signal and the second digital electric signal, the second digital electric signal is exported.
By taking Fig. 7 as an example, the first minimum sound pressure level of the first sound pressure level range is equal to the second maximum sound pressure level of the second sound pressure level range, and the first sound pressure level range and the second sound pressure level range do not have crossover range.Step A1 and step A2 can cover all ranges, that is, select digital electric signal all the way from the first digital electric signal and the second digital electric signal.
By taking Fig. 6 as an example, the first minimum sound pressure level of the first sound pressure level range is greater than the second maximum sound pressure level of the second sound pressure level range, and the first sound pressure level range and the second sound pressure level range have crossover range.Single-wide in addition to crossover range selects digital electric signal all the way from the first digital electric signal and the second digital electric signal.For crossover range, the following examples are referred to.
In one embodiment, the second maximum sound pressure level of the second sound pressure level range is greater than the first minimum sound pressure level of the first sound pressure level range；Step 802 includes: step A3.
In step A3, when belonging between the first minimum sound pressure level of the first sound pressure level range and the second maximum sound pressure level of the second sound pressure level range when the sound pressure level of the first digital electric signal and the second digital electric signal, digital electric signal output all the way is selected from the first digital electric signal and the second digital electric signal.
The present embodiment determines that the digital electric signal all the way of output, implementation are simple by the way of selecting one.Because the first sound transducer and second sound sensor can normally receive voice signal in crossover range, so two-way voice signal will not be all distorted, it is ensured that the quality of voice signal.
Selection mode can there are many, referring to the following examples.
In one embodiment, step A3 includes: step A31, step A32 or step A33.
In step A31, digital electric signal output all the way is randomly choosed from the first digital electric signal and the second digital electric signal.
The present embodiment uses randomly selected mode, realizes that process is fairly simple, and any railway digital electric signal can meet quality requirement, guarantees that audio is undistorted.
In step A32, the second digital electric signal is selected to export from the first digital electric signal and the second digital electric signal.
The crossover range belongs to the bottom half of the first sound pressure level range, and belongs to the upper half of the second sound pressure level range.Present inventor's discovery, sensor are more preferable to the effect of the audible signal reception of high sound pressure level.That is, in most cases, the quality of the second digital electric signal is better than the first digital electric signal.Therefore, the second digital electric signal output of the present embodiment selection better quality.
In step A33, the higher output of digital electric signal all the way of signal-to-noise ratio is selected from the first digital electric signal and the second digital electric signal.
The signal-to-noise ratio of the every railway digital electric signal of the present embodiment actual measurement, to select quality, preferably digital electric signal is exported all the way.
In one embodiment, the second maximum sound pressure level of the second sound pressure level range is greater than the first minimum sound pressure level of the first sound pressure level range；Step 802 includes: step A4.
In step A4, when belonging between the first minimum sound pressure level of the first sound pressure level range and the second maximum sound pressure level of the second sound pressure level range when the sound pressure level of the first digital electric signal and the second digital electric signal, first digital electric signal and the second digital electric signal are smoothly synthesized, the digital electric signal all the way after output smoothing synthesis.
The present embodiment obtains digital electric signal all the way, the quality-advantage of compatible first digital electric signal and the second digital electric signal by the way of signal synthesis.The digital electric signal all the way of better quality can be obtained.
There are many modes smoothly synthesized, for example, the first digital electric signal and the second digital electric signal are carried out linear superposition.The available digital electric signal all the way of superposition processing.Superimposed digital electric signal is handled, it can be achieved that noise reduction using adaptive echo cancellation algorithm.Then to this, digital electric signal is normalized all the way, obtains quality preferably digital electric signal all the way.
Fig. 9 is a kind of flow chart of the method for audio processing shown according to an exemplary embodiment, as shown in figure 9, this method can be realized by digital signal processor, comprising the following steps:
In step 901, receive the first digital electric signal and the second digital electric signal, wherein, first digital electric signal is that the voice signal received by the first sound transducer is converted to, second digital electric signal is that the voice signal received by second sound sensor is converted to, first sound transducer works in the first sound pressure level range, for second sound working sensor in the second sound pressure level range, the first maximum sound pressure level of the first sound pressure level range is greater than the second maximum sound pressure level of the second sound pressure level range.
In step 902, when belonging between the first maximum sound pressure level of the first sound pressure level range and the second maximum sound pressure level of the second sound pressure level range when the sound pressure level of the first digital electric signal and the second digital electric signal, the first digital electric signal is exported.
In step 903, when belonging to when the sound pressure level of the first digital electric signal and the second digital electric signal between the first minimum sound pressure level of the first sound pressure level range and the second minimum sound pressure level of the second sound pressure level range, the second digital electric signal is exported.
In step 904, when belonging between the first minimum sound pressure level of the first sound pressure level range and the second maximum sound pressure level of the second sound pressure level range when the sound pressure level of the first digital electric signal and the second digital electric signal, digital electric signal output all the way is selected from the first digital electric signal and the second digital electric signal.
Figure 10 is a kind of flow chart of the method for audio processing shown according to an exemplary embodiment, and as shown in Figure 10, this method can be realized by digital signal processor, comprising the following steps:
In step 1001, receive the first digital electric signal and the second digital electric signal, wherein, first digital electric signal is that the voice signal received by the first sound transducer is converted to, second digital electric signal is that the voice signal received by second sound sensor is converted to, first sound transducer works in the first sound pressure level range, for second sound working sensor in the second sound pressure level range, the first maximum sound pressure level of the first sound pressure level range is greater than the second maximum sound pressure level of the second sound pressure level range.
In step 1002, when belonging to when the sound pressure level of the first digital electric signal and the second digital electric signal between the first maximum sound pressure level of the first sound pressure level range and the second maximum sound pressure level of the second sound pressure level range, the first digital electric signal is exported.
In step 1003, when belonging between the first minimum sound pressure level of the first sound pressure level range and the second minimum sound pressure level of the second sound pressure level range when the sound pressure level of the first digital electric signal and the second digital electric signal, the second digital electric signal is exported.
In step 1004, when belonging between the first minimum sound pressure level of the first sound pressure level range and the second maximum sound pressure level of the second sound pressure level range when the sound pressure level of the first digital electric signal and the second digital electric signal, first digital electric signal and the second digital electric signal are smoothly synthesized, the digital electric signal all the way after output smoothing synthesis.
Above-described embodiment can carry out various combinations according to actual needs.
By the realization process described above for having understood audio processing, which is realized by digital signal processor (device of audio processing), is introduced below for the internal structure and function of digital signal processor.
Figure 11 is a kind of schematic device of audio processing shown according to an exemplary embodiment.Referring to Fig.1 1, which includes: receiving module 1101 and processing module 1102.
Receiving module 1101, for receiving the first digital electric signal and the second digital electric signal, wherein, first digital electric signal is that the voice signal received by the first sound transducer is converted to, second digital electric signal is that the voice signal received by second sound sensor is converted to, first sound transducer works in the first sound pressure level range, for second sound working sensor in the second sound pressure level range, the first maximum sound pressure level of the first sound pressure level range is greater than the second of the second sound pressure level range most
High sound pressure level.
Processing module 1102, for exporting digital electric signal all the way according to the first digital electric signal and the second digital electric signal.
In one embodiment, as shown in figure 12, the processing module 1102 includes: the first processing submodule 1201 or second processing submodule 1202.
First processing submodule 1201, when for belonging between the first maximum sound pressure level of the first sound pressure level range and the second maximum sound pressure level of the second sound pressure level range when the sound pressure level of the first digital electric signal and the second digital electric signal, exports the first digital electric signal.
Second processing submodule 1202 when for belonging between the first minimum sound pressure level of the first sound pressure level range and the second minimum sound pressure level of the second sound pressure level range when the sound pressure level of the first digital electric signal and the second digital electric signal, exports the second digital electric signal.
In one embodiment, the second maximum sound pressure level of the second sound pressure level range is greater than the first minimum sound pressure level of the first sound pressure level range；
As shown in figure 13, the processing module 1102 includes: third processing submodule 1301.
Third handles submodule 1301, when for belonging between the first minimum sound pressure level of the first sound pressure level range and the second maximum sound pressure level of the second sound pressure level range when the sound pressure level of the first digital electric signal and the second digital electric signal, digital electric signal output all the way is selected from the first digital electric signal and the second digital electric signal.
In one embodiment, the third processing submodule 1301 randomly chooses digital electric signal output all the way from the first digital electric signal and the second digital electric signal；Alternatively, the second digital electric signal is selected to export from the first digital electric signal and the second digital electric signal；Alternatively, selecting the higher output of digital electric signal all the way of signal-to-noise ratio from the first digital electric signal and the second digital electric signal.
In one embodiment, the second maximum sound pressure level of the second sound pressure level range is greater than the first minimum sound pressure level of the first sound pressure level range；
As shown in figure 14, the processing module 1102 includes: fourth process submodule 1401.
Fourth process submodule 1401, when for belonging between the first minimum sound pressure level of the first sound pressure level range and the second maximum sound pressure level of the second sound pressure level range when the sound pressure level of the first digital electric signal and the second digital electric signal, first digital electric signal and the second digital electric signal are smoothly synthesized, the digital electric signal all the way after output smoothing synthesis.
About the device in above-described embodiment, the concrete mode that wherein modules execute operation is described in detail in the embodiment of the method, and no detailed explanation will be given here.
Figure 15 is a kind of block diagram of device 1500 for audio processing shown according to an exemplary embodiment.For example, device 1500 can be mobile phone, computer, digital broadcasting terminal, messaging device, game console, tablet device, Medical Devices, body-building equipment, personal digital assistant etc..
Referring to Fig.1 5, device 1500 may include following one or more components: processing component 1502, memory 1504, power supply module 1506, multimedia component 1508, audio component 1510, the interface 1512 of input/output (I/O), sensor module 1514 and communication component 1516.
The integrated operation of the usual control device 1500 of processing component 1502, such as with display, telephone call, data communication,
Camera operation and record operate associated operation.Processing component 1502 may include one or more processors 1520 to execute instruction, to perform all or part of the steps of the methods described above.In addition, processing component 1502 may include one or more modules, convenient for the interaction between processing component 1502 and other assemblies.For example, processing component 1502 may include multi-media module, to facilitate the interaction between multimedia component 1508 and processing component 1502.
Memory 1504 is configured as storing various types of data to support the operation in device 1500.The example of these data includes the instruction of any application or method for operating on device 1500, contact data, telephone book data, message, picture, video etc..Memory 1504 can be realized by any kind of volatibility or non-volatile memory device or their combination, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), Erasable Programmable Read Only Memory EPROM (EPROM), programmable read only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, disk or CD.
Power supply module 1506 provides power supply for the various assemblies of device 1500.Power supply module 1506 may include power-supply management system, one or more power supplys and other with for device 1500 generate, manage, and distribute the associated component of power supply.
Multimedia component 1508 includes the screen of one output interface of offer between described device 1500 and user.In some embodiments, screen may include liquid crystal display (LCD) and touch panel (TP).If screen includes touch panel, screen may be implemented as touch screen, to receive input signal from the user.Touch panel includes one or more touch sensors to sense the gesture on touch, slide, and touch panel.The touch sensor can not only sense the boundary of a touch or slide action, but also detect duration and pressure associated with the touch or slide operation.In some embodiments, multimedia component 1508 includes a front camera and/or rear camera.When device 1500 is in operation mode, such as in a shooting mode or a video mode, front camera and/or rear camera can receive external multi-medium data.Each front camera and rear camera can be a fixed optical lens system or have focusing and optical zoom capabilities.
Audio component 1510 is configured as output and/or input audio signal.For example, audio component 1510 includes a microphone (MIC), when device 1500 is in operation mode, when such as call mode, recording mode, and voice recognition mode, microphone is configured as receiving external audio signal.The received audio signal can be further stored in memory 1504 or send via communication component 1516.In some embodiments, audio component 1510 further includes a loudspeaker, is used for output audio signal.
I/O interface 1512 provides interface between processing component 1502 and peripheral interface module, and above-mentioned peripheral interface module can be keyboard, click wheel, button etc..These buttons may include, but are not limited to: home button, volume button, start button and locking press button.
Sensor module 1514 includes one or more sensors, for providing the status assessment of various aspects for device 1500.Such as, what sensor module 1514 can detecte device 1500 opens/closes state, the relative positioning of component, such as the component is the display and keypad of device 1500, sensor module 1514 can be with detection device 1500 or the position change of a component of device 1500, the existence or non-existence that user contacts with device 1500, the temperature change in 1500 orientation of device or acceleration/deceleration and device 1500.Sensor module 1514 may include proximity sensor, be configured to detect the presence of nearby objects without any physical contact.Sensor module 1514 can also include optical sensor, such as CMOS or ccd image sensor, for using in imaging applications.In some embodiments, the sensor module 1514
It can also include acceleration transducer, gyro sensor, Magnetic Sensor, pressure sensor or temperature sensor.
Communication component 1516 is configured to facilitate the communication of wired or wireless way between device 1500 and other equipment.Device 1500 can access the wireless network based on communication standard, such as WiFi, 2G or 3G or their combination.In one exemplary embodiment, communication component 1516 receives broadcast singal or broadcast related information from external broadcasting management system via broadcast channel.In one exemplary embodiment, the communication component 1516 further includes near-field communication (NFC) module, to promote short range communication.For example, can be realized based on radio frequency identification (RFID) technology, Infrared Data Association (IrDA) technology, ultra wide band (UWB) technology, bluetooth (BT) technology and other technologies in NFC module.
In the exemplary embodiment, device 1500 can be realized by one or more application specific integrated circuit (ASIC), digital signal processor (DSP), digital signal processing appts (DSPD), programmable logic device (PLD), field programmable gate array (FPGA), controller, microcontroller, microprocessor or other electronic components, for executing the above method.
In the exemplary embodiment, a kind of non-transitorycomputer readable storage medium including instruction, the memory 1504 for example including instruction are additionally provided, above-metioned instruction can be executed by the processor 1520 of device 1500 to complete the above method.For example, the non-transitorycomputer readable storage medium can be ROM, random access memory (RAM), CD-ROM, tape, floppy disk and optical data storage devices etc..
A kind of device of audio processing, comprising:
Processor；
Memory for storage processor executable instruction；
Wherein, the processor is configured to:
Receive the first digital electric signal and the second digital electric signal, wherein, first digital electric signal is that the voice signal received by the first sound transducer is converted to, second digital electric signal is that the voice signal received by second sound sensor is converted to, first sound transducer works in the first sound pressure level range, for second sound working sensor in the second sound pressure level range, the first maximum sound pressure level of the first sound pressure level range is greater than the second maximum sound pressure level of the second sound pressure level range；
According to the first digital electric signal and the second digital electric signal, digital electric signal all the way is exported.
The processor can be additionally configured to:
It is described according to the first digital electric signal and the second digital electric signal, output digital electric signal all the way, comprising:
When belonging between the first maximum sound pressure level of the first sound pressure level range and the second maximum sound pressure level of the second sound pressure level range when the sound pressure level of the first digital electric signal and the second digital electric signal, the first digital electric signal is exported；
When belonging between the first minimum sound pressure level of the first sound pressure level range and the second minimum sound pressure level of the second sound pressure level range when the sound pressure level of the first digital electric signal and the second digital electric signal, the second digital electric signal is exported.
The processor can be additionally configured to:
Second maximum sound pressure level of the second sound pressure level range is greater than the first minimum sound pressure level of the first sound pressure level range；
It is described according to the first digital electric signal and the second digital electric signal, output digital electric signal all the way, comprising:
When belonging between the first minimum sound pressure level of the first sound pressure level range and the second maximum sound pressure level of the second sound pressure level range when the sound pressure level of the first digital electric signal and the second digital electric signal, digital electric signal output all the way is selected from the first digital electric signal and the second digital electric signal.
The processor can be additionally configured to:
It is described that digital electric signal output all the way is selected from the first digital electric signal and the second digital electric signal, comprising:
Digital electric signal output all the way is randomly choosed from the first digital electric signal and the second digital electric signal；Or
The second digital electric signal is selected to export from the first digital electric signal and the second digital electric signal；Or
The higher output of digital electric signal all the way of signal-to-noise ratio is selected from the first digital electric signal and the second digital electric signal.
The processor can be additionally configured to:
Second maximum sound pressure level of the second sound pressure level range is greater than the first minimum sound pressure level of the first sound pressure level range；
It is described according to the first digital electric signal and the second digital electric signal, output digital electric signal all the way, comprising:
When belonging between the first minimum sound pressure level of the first sound pressure level range and the second maximum sound pressure level of the second sound pressure level range when the sound pressure level of the first digital electric signal and the second digital electric signal, first digital electric signal and the second digital electric signal are smoothly synthesized, the digital electric signal all the way after output smoothing synthesis.
A kind of non-transitorycomputer readable storage medium, when the instruction in the storage medium is executed by the processor of mobile terminal, so that a kind of method that mobile terminal is able to carry out audio processing, which comprises
Receive the first digital electric signal and the second digital electric signal, wherein, first digital electric signal is that the voice signal received by the first sound transducer is converted to, second digital electric signal is that the voice signal received by second sound sensor is converted to, first sound transducer works in the first sound pressure level range, for second sound working sensor in the second sound pressure level range, the first maximum sound pressure level of the first sound pressure level range is greater than the second maximum sound pressure level of the second sound pressure level range；
According to the first digital electric signal and the second digital electric signal, digital electric signal all the way is exported.
Instruction in the storage medium can also include:
It is described according to the first digital electric signal and the second digital electric signal, output digital electric signal all the way, comprising:
When belonging between the first maximum sound pressure level of the first sound pressure level range and the second maximum sound pressure level of the second sound pressure level range when the sound pressure level of the first digital electric signal and the second digital electric signal, the first digital electric signal is exported；
When belonging between the first minimum sound pressure level of the first sound pressure level range and the second minimum sound pressure level of the second sound pressure level range when the sound pressure level of the first digital electric signal and the second digital electric signal, the second digital electric signal is exported.
Instruction in the storage medium can also include:
Second maximum sound pressure level of the second sound pressure level range is greater than the first minimum sound pressure level of the first sound pressure level range；
It is described according to the first digital electric signal and the second digital electric signal, output digital electric signal all the way, comprising:
When belonging between the first minimum sound pressure level of the first sound pressure level range and the second maximum sound pressure level of the second sound pressure level range when the sound pressure level of the first digital electric signal and the second digital electric signal, digital electric signal output all the way is selected from the first digital electric signal and the second digital electric signal.
Instruction in the storage medium can also include:
It is described that digital electric signal output all the way is selected from the first digital electric signal and the second digital electric signal, comprising:
Digital electric signal output all the way is randomly choosed from the first digital electric signal and the second digital electric signal；Or
The second digital electric signal is selected to export from the first digital electric signal and the second digital electric signal；Or
The higher output of digital electric signal all the way of signal-to-noise ratio is selected from the first digital electric signal and the second digital electric signal.
Instruction in the storage medium can also include:
Second maximum sound pressure level of the second sound pressure level range is greater than the first minimum sound pressure level of the first sound pressure level range；
It is described according to the first digital electric signal and the second digital electric signal, output digital electric signal all the way, comprising:
When belonging between the first minimum sound pressure level of the first sound pressure level range and the second maximum sound pressure level of the second sound pressure level range when the sound pressure level of the first digital electric signal and the second digital electric signal, first digital electric signal and the second digital electric signal are smoothly synthesized, the digital electric signal all the way after output smoothing synthesis.
Figure 16 is a kind of block diagram of device 1600 for audio processing shown according to an exemplary embodiment.For example, device 1600 may be provided as a computer.Referring to Fig.1 6, it further comprises one or more processors, and the memory resource as representated by memory 1632 that device 1600, which includes processing component 1622, can be by the instruction of the execution of processing component 1622, such as application program for storing.The application program stored in memory 1632 may include it is one or more each correspond to one group of instruction module.In addition, processing component 1622 is configured as executing instruction, to execute above method audio processing.
Device 1600 can also include the power management that a power supply module 1626 is configured as executive device 1600, and a wired or wireless network interface 1650 is configured as device 1600 being connected to network and input and output (I/O) interface 1658.Device 1600 can be operated based on the operating system for being stored in memory 1632, such as Windows ServerTM, Mac OS XTM, UnixTM, LinuxTM, FreeBSDTM or similar.
Those skilled in the art after considering the specification and implementing the invention disclosed here, will readily occur to other embodiments of the present invention.This application is intended to cover any variations, uses, or adaptations of the invention, these variations, uses, or adaptations follow general principle of the invention and including the undocumented common knowledges or conventional techniques in the art of the present invention.The description and examples are only to be considered as illustrative, and true scope and spirit of the invention are indicated by the following claims.
It should be understood that the present invention is not limited to the precise structure already described above and shown in the accompanying drawings, and various modifications and changes may be made without departing from the scope thereof.The scope of the present invention is limited only by the attached claims.
Claims (16)
- A kind of microphone characterized by comprisingVoice signal for receiving the voice signal of the first sound pressure level range, and is converted to analog electrical signal by the first sound transducer；Voice signal for receiving the voice signal of the second sound pressure level range, and is converted to analog electrical signal by second sound sensor；Wherein, the first maximum sound pressure level of the first sound pressure level range is greater than the second maximum sound pressure level of the second sound pressure level range.
- Microphone according to claim 1, which is characterized in that the microphone further include:First amplifier is connect, for amplifying to analog electrical signal with first sound transducer；Second amplifier is connect, for amplifying to analog electrical signal with the second sound sensor.
- Microphone according to claim 1 or 2, which is characterized in that the microphone further include:First analog-digital converter is connect with first sound transducer or the first amplifier, for analog electrical signal to be converted to digital electric signal, exports the first digital electric signal；Second analog-digital converter is connect with the second sound sensor or the second amplifier, for analog electrical signal to be converted to digital electric signal, exports the second digital electric signal.
- Microphone according to claim 3, which is characterized in that the microphone further include:Digital signal processor is connect with the first analog-digital converter and the second analog-digital converter, for exporting digital electric signal all the way according to the first digital electric signal and the second digital electric signal.
- Microphone according to claim 1, which is characterized in that the second maximum sound pressure level of the second sound pressure level range is equal to or more than the first minimum sound pressure level of the first sound pressure level range.
- A kind of method of audio processing characterized by comprisingReceive the first digital electric signal and the second digital electric signal, wherein, first digital electric signal is that the voice signal received by the first sound transducer is converted to, second digital electric signal is that the voice signal received by second sound sensor is converted to, first sound transducer works in the first sound pressure level range, for second sound working sensor in the second sound pressure level range, the first maximum sound pressure level of the first sound pressure level range is greater than the second maximum sound pressure level of the second sound pressure level range；According to the first digital electric signal and the second digital electric signal, digital electric signal all the way is exported.
- The method of audio processing according to claim 6, which is characterized in that it is described according to the first digital electric signal and the second digital electric signal, export digital electric signal all the way, comprising:When belonging between the first maximum sound pressure level of the first sound pressure level range and the second maximum sound pressure level of the second sound pressure level range when the sound pressure level of the first digital electric signal and the second digital electric signal, the first digital electric signal is exported；When belonging between the first minimum sound pressure level of the first sound pressure level range and the second minimum sound pressure level of the second sound pressure level range when the sound pressure level of the first digital electric signal and the second digital electric signal, the second digital electric signal is exported.
- The method of audio processing according to claim 6, which is characterized in that the second maximum sound pressure level of the second sound pressure level range is greater than the first minimum sound pressure level of the first sound pressure level range；It is described according to the first digital electric signal and the second digital electric signal, output digital electric signal all the way, comprising:When belonging between the first minimum sound pressure level of the first sound pressure level range and the second maximum sound pressure level of the second sound pressure level range when the sound pressure level of the first digital electric signal and the second digital electric signal, digital electric signal output all the way is selected from the first digital electric signal and the second digital electric signal.
- The method of audio processing according to claim 8, which is characterized in that described that digital electric signal output all the way is selected from the first digital electric signal and the second digital electric signal, comprising:Digital electric signal output all the way is randomly choosed from the first digital electric signal and the second digital electric signal；OrThe second digital electric signal is selected to export from the first digital electric signal and the second digital electric signal；OrThe higher output of digital electric signal all the way of signal-to-noise ratio is selected from the first digital electric signal and the second digital electric signal.
- The method of audio processing according to claim 6, which is characterized in that the second maximum sound pressure level of the second sound pressure level range is greater than the first minimum sound pressure level of the first sound pressure level range；It is described according to the first digital electric signal and the second digital electric signal, output digital electric signal all the way, comprising:When belonging between the first minimum sound pressure level of the first sound pressure level range and the second maximum sound pressure level of the second sound pressure level range when the sound pressure level of the first digital electric signal and the second digital electric signal, first digital electric signal and the second digital electric signal are smoothly synthesized, the digital electric signal all the way after output smoothing synthesis.
- A kind of device of audio processing characterized by comprisingReceiving module, for receiving the first digital electric signal and the second digital electric signal, wherein, first digital electric signal is that the voice signal received by the first sound transducer is converted to, second digital electric signal is that the voice signal received by second sound sensor is converted to, first sound transducer works in the first sound pressure level range, for second sound working sensor in the second sound pressure level range, the first maximum sound pressure level of the first sound pressure level range is greater than the second maximum sound pressure level of the second sound pressure level range；Processing module, for exporting digital electric signal all the way according to the first digital electric signal and the second digital electric signal.
- The device of audio processing according to claim 11, which is characterized in that the processing module includes:First processing submodule, when for belonging between the first maximum sound pressure level of the first sound pressure level range and the second maximum sound pressure level of the second sound pressure level range when the sound pressure level of the first digital electric signal and the second digital electric signal, exports the first digital electric signal；Second processing submodule when for belonging between the first minimum sound pressure level of the first sound pressure level range and the second minimum sound pressure level of the second sound pressure level range when the sound pressure level of the first digital electric signal and the second digital electric signal, exports the second digital electric signal.
- The device of audio processing according to claim 11, which is characterized in that the second maximum sound pressure level of the second sound pressure level range is greater than the first minimum sound pressure level of the first sound pressure level range；The processing module includes:Third handles submodule, when for belonging between the first minimum sound pressure level of the first sound pressure level range and the second maximum sound pressure level of the second sound pressure level range when the sound pressure level of the first digital electric signal and the second digital electric signal, digital electric signal output all the way is selected from the first digital electric signal and the second digital electric signal.
- The device of audio processing according to claim 13, which is characterized in that the third processing submodule randomly chooses digital electric signal output all the way from the first digital electric signal and the second digital electric signal；Alternatively, the second digital electric signal is selected to export from the first digital electric signal and the second digital electric signal；Alternatively, selecting the higher output of digital electric signal all the way of signal-to-noise ratio from the first digital electric signal and the second digital electric signal.
- The device of audio processing according to claim 11, which is characterized in that the second maximum sound pressure level of the second sound pressure level range is greater than the first minimum sound pressure level of the first sound pressure level range；The processing module includes:Fourth process submodule, when for belonging between the first minimum sound pressure level of the first sound pressure level range and the second maximum sound pressure level of the second sound pressure level range when the sound pressure level of the first digital electric signal and the second digital electric signal, first digital electric signal and the second digital electric signal are smoothly synthesized, the digital electric signal all the way after output smoothing synthesis.
- A kind of device of audio processing characterized by comprisingProcessor；Memory for storage processor executable instruction；Wherein, the processor is configured to:Receive the first digital electric signal and the second digital electric signal, wherein, first digital electric signal is that the voice signal received by the first sound transducer is converted to, second digital electric signal is that the voice signal received by second sound sensor is converted to, first sound transducer works in the first sound pressure level range, for second sound working sensor in the second sound pressure level range, the first maximum sound pressure level of the first sound pressure level range is greater than the second maximum sound pressure level of the second sound pressure level range；According to the first digital electric signal and the second digital electric signal, digital electric signal all the way is exported.
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| PCT/CN2016/106461 WO2018090343A1 (en) | 2016-11-18 | 2016-11-18 | Microphone, and method and device for audio processing |
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| CN109068250A (en) * | 2018-10-15 | 2018-12-21 | 维沃移动通信有限公司 | A kind of microphone and electronic equipment |
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