CN108962273A - A kind of audio-frequency inputting method and device of microphone - Google Patents
A kind of audio-frequency inputting method and device of microphone Download PDFInfo
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
- G10L21/00—Speech or voice signal processing techniques to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
- G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
- G10L21/0208—Noise filtering
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
- G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
- G10L19/008—Multichannel audio signal coding or decoding using interchannel correlation to reduce redundancy, e.g. joint-stereo, intensity-coding or matrixing
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- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
- G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
- G10L19/04—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis using predictive techniques
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- G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
- G10L19/04—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis using predictive techniques
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- G10L21/00—Speech or voice signal processing techniques to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
- G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
- G10L21/00—Speech or voice signal processing techniques to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
- G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
- G10L21/0208—Noise filtering
- G10L21/0216—Noise filtering characterised by the method used for estimating noise
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Abstract
The embodiment of the invention provides a kind of audio-frequency inputting method of microphone and devices, are related to Audiotechnica field.This method comprises: analog audio signal is input in audio coding decoding chip when collecting analog audio signal；By audio coding decoding chip, analog audio signal is converted to the digital conversion signal of at least one digital audio format, and analog audio signal is converted to the analog-converted signal of at least one analogue audio frequency format；The analog-converted signal of the digital conversion signal of at least one digital audio format and at least one analogue audio frequency format is exported to the audio frequency apparatus of connection.Collected analog audio signal can be converted to the audio signal of a variety of output formats by the microphone in the present invention, and then it can export to the audio frequency apparatus of connection, to which audio frequency apparatus can be from multiple audio signals, the audio signal to match with itself input interface format is received, so as to adapt to a variety of docking demands.
Description
Technical field
The present invention relates to Audiotechnica fields, audio-frequency inputting method and a kind of microphone more particularly to a kind of microphone
Audio output device.
Background technique
With the rapid development of science and technology, the audio frequency apparatus of the Various Functions such as microphone can be people's lives band
Carry out great convenience.For example, people can link up by microphone when holding two places video conference, trans-regional conjunction is realized
Make.
In general, the microphone needs used in a meeting are docked with various audio frequency apparatuses, and wheat is used in meeting
Gram wind can only provide a kind of external output interface, therefore can not adapt to the need docked with different types of audio frequency apparatus
It asks.
Summary of the invention
In view of the above problems, it proposes the embodiment of the present invention and overcomes the above problem or at least partly in order to provide one kind
A kind of audio-frequency inputting method of the microphone to solve the above problems and a kind of corresponding audio output device of microphone.
To solve the above-mentioned problems, the embodiment of the invention discloses a kind of audio-frequency inputting method of microphone, this method packets
It includes:
When collecting analog audio signal, the analog audio signal is input in audio coding decoding chip；
By the audio coding decoding chip, the analog audio signal is converted at least one digital audio format
Digital conversion signal, and the analog audio signal is converted to the analog-converted signal of at least one analogue audio frequency format；
By the digital conversion signal of at least one digital audio format and at least one analogue audio frequency format
Analog-converted signal export to the audio frequency apparatus of connection.
Optionally, described by the audio coding decoding chip, the analog audio signal is converted at least one number
The digital conversion signal of word audio format, and the analog audio signal is converted to the mould of at least one analogue audio frequency format
Before quasi- conversion signal, further includes:
When collecting ambient noise signal, the ambient noise signal is input in audio coding decoding chip；
Correspondingly, it is described by the audio coding decoding chip, the analog audio signal is converted at least one number
The digital conversion signal of word audio format, and the analog audio signal is converted to the mould of at least one analogue audio frequency format
Quasi- conversion signal, comprising:
By the audio coding decoding chip, by the amplitude phase of the analog audio signal and the ambient noise signal
Subtract, obtains de-noising signal；
The de-noising signal is converted to the digital conversion signal of at least one digital audio format, and by the noise reduction
Signal is converted to the analog-converted signal of at least one analogue audio frequency format.
Optionally, described by the digital conversion signal of at least one digital audio format and at least one
The analog-converted signal of analogue audio frequency format is exported to before the audio frequency apparatus of connection, further includes:
When detecting output gain adjustment instruction, gain factor is determined；
Correspondingly, described by the digital conversion signal of at least one digital audio format and at least one
The analog-converted signal of analogue audio frequency format is exported to the audio frequency apparatus of connection, comprising:
By the amplitude of the analog-converted signal of at least one analogue audio frequency format multiplied by the gain factor, obtain to
A kind of analog gain signal of few analogue audio frequency format；
By the digital conversion signal of at least one digital audio format and at least one analogue audio frequency format
Analog gain signal export to the audio frequency apparatus of connection.
Optionally, the digital audio format includes I2S output format and/or S/PDIF output format.
Optionally, the analogue audio frequency format includes card agriculture output format and/or LINE_OUT output format.
To solve the above-mentioned problems, the embodiment of the invention also discloses a kind of audio output device of microphone, the devices
Include:
First input module, for when collecting analog audio signal, the analog audio signal to be input to audio
In codec chip；
Conversion module, for by the audio coding decoding chip, the analog audio signal to be converted at least one
The digital conversion signal of digital audio format, and the analog audio signal is converted at least one analogue audio frequency format
Analog-converted signal；
Output module, for by the digital conversion signal of at least one digital audio format and described at least one
The analog-converted signal of kind analogue audio frequency format is exported to the audio frequency apparatus of connection.
Optionally, which is characterized in that described device further include:
Second input module, for when collecting ambient noise signal, the ambient noise signal to be input to audio
In codec chip；
Correspondingly, the conversion module includes:
Noise reduction submodule, for by the audio coding decoding chip, the analog audio signal and the background to be made an uproar
The amplitude of acoustical signal is subtracted each other, and de-noising signal is obtained；
Transform subblock, for the de-noising signal to be converted to the number conversion letter of at least one digital audio format
Number, and the de-noising signal is converted to the analog-converted signal of at least one analogue audio frequency format.
Optionally, described device further include:
Determining module, for determining gain factor when detecting output gain adjustment instruction；
Correspondingly, the output module includes:
Gain submodule, for by the amplitude of the analog-converted signal of at least one analogue audio frequency format multiplied by described
Gain factor obtains the analog gain signal of at least one analogue audio frequency format；
Output sub-module, for by the digital conversion signal of at least one digital audio format and it is described at least
A kind of analog gain signal of analogue audio frequency format is exported to the audio frequency apparatus of connection.
Optionally, the digital audio format includes I2S output format and/or S/PDIF output format.
Optionally, the analogue audio frequency format includes card agriculture output format and/or LINE_OUT output format.
The embodiment of the present invention includes following advantages:
In embodiments of the present invention, microphone can be by audio coding decoding chip, by collected analog audio signal
The digital conversion signal of at least one digital audio format is converted to, and collected analog audio signal is converted at least
A kind of analog-converted signal of analogue audio frequency format, that is to say the sound that analog audio signal can be converted to a variety of output formats
Frequency signal, and then the audio signal of a variety of output formats can be exported to the audio frequency apparatus of connection, so that audio frequency apparatus can be with
From multiple audio signals, the audio signal to match with the format of itself input interface is directly received, it is more so as to adapt to
Kind docking demand.
Detailed description of the invention
Fig. 1 is a kind of step flow chart of the audio-frequency inputting method embodiment of microphone of the invention；
Fig. 2 is the step flow chart of the audio-frequency inputting method embodiment of another microphone of the invention；
Fig. 3 is a kind of structural block diagram of the audio output device embodiment of microphone of the invention；
Fig. 4 is the structural block diagram of the audio output device embodiment of another microphone of the invention.
Specific embodiment
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, with reference to the accompanying drawing and specific real
Applying mode, the present invention is described in further detail.
Referring to Fig.1, a kind of step flow chart of the audio-frequency inputting method embodiment of microphone of the invention, the party are shown
Method can specifically include following steps:
Step 101, when collecting analog audio signal, the analog audio signal is input to audio coding decoding chip
In.
In the embodiment of the present invention, the microphone for being built-in with audio coding decoding chip can be docked with an audio frequency apparatus,
The audio frequency apparatus can be the video conference devices such as view networked terminals, and the present invention is not especially limit this.Work as Mike
When wind is opened, analog audio signal can be acquired by the built-in first-class acquisition device of sound, and then the analogue audio frequency can be believed
It number is input in the audio coding decoding chip built in microphone.
Step 102, by the audio coding decoding chip, the analog audio signal is converted at least one digital sound
The digital conversion signal of frequency format, and the simulation that the analog audio signal is converted at least one analogue audio frequency format is turned
Change signal.
Audio coding decoding chip built in microphone can be by presetting each analog-to-digital conversions of various digital audio formats
Analog audio signal is converted to the digital conversion signal of at least one digital audio format by device.Meanwhile audio coding decoding chip
The amplitude of analog audio signal can also be multiplied respectively with each output multiple of corresponding each analogue audio frequency format, thus
The analog-converted signal of at least one analogue audio frequency format is obtained, that is to say that audio coding decoding chip can be by an analogue audio frequency
Signal is converted to the output signal of a variety of output formats.
Step 103, by the digital conversion signal of at least one digital audio format and at least one simulation
The analog-converted signal of audio format is exported to the audio frequency apparatus of connection.
Microphone can be by output interface, by the number conversion letter for at least one digital audio format being converted to
Number and at least one analogue audio frequency format analog-converted signal, while exporting to the audio frequency apparatus that is connect with microphone.By
It only can receive the audio signal to match with the format of its input interface in audio frequency apparatus, therefore, microphone can be to audio
Equipment inputs the audio signal of a variety of output formats, so that audio frequency apparatus can directly receive and oneself from multiple audio signals
The audio signal that the format of body input interface matches, so as to adapt to a variety of docking demands.
In addition, in the embodiment of the present invention, since microphone itself can export the audio signal of multiple format,
Without increasing additional switching device between microphone and audio frequency apparatus, so as to reduce the cost of audio output.
In embodiments of the present invention, microphone can be by audio coding decoding chip, by collected analog audio signal
The digital conversion signal of at least one digital audio format is converted to, and collected analog audio signal is converted at least
A kind of analog-converted signal of analogue audio frequency format, that is to say the sound that analog audio signal can be converted to a variety of output formats
Frequency signal, and then the audio signal of a variety of output formats can be exported to the audio frequency apparatus of connection, so that audio frequency apparatus can be with
From multiple audio signals, the audio signal to match with the format of itself input interface is directly received, it is more so as to adapt to
Kind docking demand.
Referring to Fig. 2, the step flow chart of the audio-frequency inputting method embodiment of another microphone of the invention is shown, it should
Method can specifically include following steps:
Step 201, when detecting output gain adjustment instruction, gain factor is determined.
In the embodiment of the present invention, the key for adjusting output gain is can be set in microphone, can be with using the user of microphone
It when opening microphone, can be adjusted by output gain of the key to microphone, to keep microphone output different
The audio of gain.When user presses the key of output gain, microphone can detecte output gain adjustment instruction, Jin Ermai
Gram wind can determine gain factor according to parameters such as the compression numbers of user.Certainly, user can also be in appointing using microphone
It anticipates the moment, the output gain of audio is adjusted, the present invention is not especially limit this.
For example, the "+" key for improving output gain can be set in microphone, and the "-" key of output gain is reduced, when
When user presses "+" key, microphone can detecte output gain adjustment instruction, and then can determine that gain factor is 1.2.
Step 202, when collecting ambient noise signal, the ambient noise signal is input to audio coding decoding chip
In.
Since the use environment of microphone is complicated, ambient noise usually there will be in environment, ambient noise will be to wheat
The output sound quality of gram wind causes adverse effect, and therefore, microphone can carry out noise reduction process to audio, to eliminate ambient noise
Influence.
When the user of use microphone can be when opening microphone, usual user will not start to talk at once, therefore
Microphone is opened into user and starts in the duration of speech, and microphone can acquire ambient noise letter by built-in acquisition device
Number, and then collected ambient noise signal can be input in audio coding decoding chip by acquisition device.
For example, microphone can acquire background by sound head and make an uproar in the duration that microphone is opened into that user starts speech
Collected ambient noise signal can be input in audio coding decoding chip by acoustical signal, sound head.
Step 203, when collecting analog audio signal, the analog audio signal is input to audio coding decoding chip
In.
When user starts speech, microphone can acquire analog audio signal, and then acquisition device by acquisition device
The analog audio signal can be input in audio coding decoding chip.It should be noted that passing through microphone talk in user
During, ambient noise still has, and therefore, in the collected analog audio signal of microphone includes the letter of ambient noise
Number ingredient, that is to say that analog audio signal is the superposed signal of user voice and ambient noise.
For example, microphone can acquire analog audio signal by sound head, and sound head can will be adopted when user starts speech
The analog audio signal collected is input in audio coding decoding chip.
Step 204, by the audio coding decoding chip, by the analog audio signal and the ambient noise signal
Amplitude is subtracted each other, and de-noising signal is obtained.
Since ambient noise is usually more regular, user do not talk start speech with user during, background
The waveform changing rule of noise is essentially identical, therefore microphone can be by audio coding decoding chip, from analog audio signal
Identify the signal component of ambient noise signal, and then can be by analog audio signal phase corresponding with ambient noise signal in the same time
Amplitude subtract each other, to realize to the noise reduction process of analog audio signal, and then obtain de-noising signal.
Due to that independently of each other, will not influence each other, therefore, microphone is to analogue audio frequency between ambient noise and user voice
The noise reduction process that signal is carried out will not have an impact the voice signal of user's script.
For example, microphone can identify ambient noise signal by audio coding decoding chip from analog audio signal
Signal component, and then analog audio signal mutually amplitude in the same time corresponding with ambient noise signal can be subtracted each other, be dropped
Noise cancellation signal.
Step 205, the de-noising signal is converted to the digital conversion signal of at least one digital audio format, and will
The de-noising signal is converted to the analog-converted signal of at least one analogue audio frequency format.
In the embodiment of the present invention, digital audio format may include I2S output format and/or S/PDIF output format, mould
Quasi- audio format may include card agriculture output format and/or LINE_OUT output format, correspondingly, the implementation of this step can
To include: de-noising signal to be converted to the first digital conversion signal of I2S output format, and/or will drop by analog-digital converter
Noise cancellation signal is converted to the second digital conversion signal of S/PDIF output format；De-noising signal is converted to the of card agriculture output format
One analog-converted signal, and/or de-noising signal is converted to the second analog-converted signal of LINE_OUT output format.
Wherein, it for the conversion of digital signal, can be realized by different analog-digital converters, for turning for analog signal
It changes, can realize that the embodiment of the present invention does not make this based on the mode that de-noising signal is multiplied from different output multiples respectively
It is specific to limit.
For example, de-noising signal can be converted to the of I2S output format by analog-digital converter by audio coding decoding chip
Second digital conversion signal of one digital conversion signal and S/PDIF output format, and de-noising signal can be converted to
The first analog-converted signal and 1.5V~4V (volt) LINE_OUT of 100mV~1000mV (millivolt) card agriculture output format export
Second analog-converted signal of format.
Step 206, by the amplitude of the analog-converted signal of at least one analogue audio frequency format multiplied by the gain times
Number, obtains the analog gain signal of at least one analogue audio frequency format.
In the embodiment of the present invention, for every kind of analog-converted signal, audio coding decoding chip can be by analog-converted signal
The amplitude at corresponding each moment obtains mould to realize the gain adjustment of audio signal multiplied by the gain factor that user is adjusted
Quasi- gain signal.
For example, the first analog-converted signal can be corresponded to the amplitude at each moment multiplied by gain by audio coding decoding chip
Multiple 1.2 obtains the first analog gain signal of card agriculture output format, and the second analog-converted signal is corresponded to each moment
Amplitude multiplied by gain factor 1.2, obtain the second analog gain signal of LINE_OUT output format.
Step 207, by the digital conversion signal of at least one digital audio format and at least one simulation
The analog gain signal of audio format is exported to the audio frequency apparatus of connection.
Microphone can be by output interface, by the number conversion letter for at least one digital audio format being converted to
Number and at least one analogue audio frequency format analog gain signal, while exporting to the audio frequency apparatus that is connect with microphone.By
It only can receive the audio signal to match with the format of its input interface in audio frequency apparatus, therefore, microphone can be to audio
Equipment inputs the audio signal of a variety of output formats, so that audio frequency apparatus can directly receive and oneself from multiple audio signals
The audio signal that the format of body input interface matches, so as to adapt to a variety of docking demands.
In addition, in the embodiment of the present invention, since microphone itself can export the audio signal of multiple format,
Without increasing additional switching device between microphone and audio frequency apparatus, so as to reduce the cost of audio output.
For example, microphone can be defeated by the first digital conversion signal, the S/PDIF of I2S output format by output interface
Second digital conversion signal of format, the first analog gain signal of card agriculture output format and LINE_OUT output format out
The second analog gain signal, while exporting to the view networked terminals that are connect with microphone, and then can pass through depending on networked terminals
Second analog gain signal of the LINE_OUT interface to LINE_OUT output format.
In embodiments of the present invention, microphone can carry out noise reduction process to collected analog audio signal, be dropped
Noise cancellation signal can reduce interference of the ambient noise to audio output, and then microphone can will be dropped by audio coding decoding chip
Noise cancellation signal signal is converted to the digital conversion signal of at least one digital audio format, and de-noising signal is converted at least one
The analog-converted signal of kind analogue audio frequency format that is to say the audio letter that de-noising signal can be converted to a variety of output formats
Number, output gain adjustment can be carried out to the audio signal of a variety of output formats later, and then export to the audio frequency apparatus of connection,
To which audio frequency apparatus can directly receive the audio to match with the format of itself input interface and believe from multiple audio signals
Number, so as to adapt to a variety of docking demands,
It should be noted that for simple description, therefore, it is stated as a series of action groups for embodiment of the method
It closes, but those skilled in the art should understand that, embodiment of that present invention are not limited by the describe sequence of actions, because according to
According to the embodiment of the present invention, some steps may be performed in other sequences or simultaneously.Secondly, those skilled in the art also should
Know, the embodiments described in the specification are all preferred embodiments, and the related movement not necessarily present invention is implemented
Necessary to example.
Referring to Fig. 3, a kind of structural block diagram of the audio output device embodiment of microphone of the invention, the device are shown
300 can specifically include following module:
First input module 301, for when collecting analog audio signal, the analog audio signal to be input to sound
In frequency codec chip；
Conversion module 302, for by the audio coding decoding chip, the analog audio signal to be converted at least one
The digital conversion signal of kind digital audio format, and the analog audio signal is converted at least one analogue audio frequency format
Analog-converted signal；
Output module 303, for by the digital conversion signal of at least one digital audio format and it is described at least
A kind of analog-converted signal of analogue audio frequency format is exported to the audio frequency apparatus of connection.
Referring to Fig. 4, in one preferred embodiment of the invention, described device further include:
Second input module 304, for when collecting ambient noise signal, the ambient noise signal to be input to sound
In frequency codec chip；
Correspondingly, the conversion module 302 includes:
Noise reduction submodule 3021 is used for by the audio coding decoding chip, by the analog audio signal and the back
The amplitude of scape noise signal is subtracted each other, and de-noising signal is obtained；
Transform subblock 3022, the number for the de-noising signal to be converted at least one digital audio format are converted
Signal, and the de-noising signal is converted to the analog-converted signal of at least one analogue audio frequency format.
Referring to Fig. 4, in one preferred embodiment of the invention, described device further include:
Determining module 305, for determining gain factor when detecting output gain adjustment instruction；
Correspondingly, the output module 303 includes:
Gain submodule 3031, for by the amplitude of the analog-converted signal of at least one analogue audio frequency format multiplied by
The gain factor obtains the analog gain signal of at least one analogue audio frequency format；
Output sub-module 3032, for by the digital conversion signal of at least one digital audio format and described
The analog gain signal of at least one analogue audio frequency format is exported to the audio frequency apparatus of connection.
In one preferred embodiment of the invention, the digital audio format includes I2S output format and/or S/PDIF
Output format.
In one preferred embodiment of the invention, the analogue audio frequency format includes card agriculture output format and/or LINE_
OUT output format.
In embodiments of the present invention, microphone can be converted to collected analog audio signal by conversion module
The digital conversion signal of at least one digital audio format, and collected analog audio signal is converted at least one mould
The analog-converted signal of quasi- audio format that is to say the audio letter that analog audio signal can be converted to a variety of output formats
Number, and then can be exported the audio signal of a variety of output formats to the audio frequency apparatus of connection by output module, thus audio
Equipment can directly receive the audio signal to match with the format of itself input interface from multiple audio signals, so as to
To adapt to a variety of docking demands.
For device embodiment, since it is basically similar to the method embodiment, related so being described relatively simple
Place illustrates referring to the part of embodiment of the method.
All the embodiments in this specification are described in a progressive manner, the highlights of each of the examples are with
The difference of other embodiments, the same or similar parts between the embodiments can be referred to each other.
It should be understood by those skilled in the art that, the embodiment of the embodiment of the present invention can provide as method, apparatus or calculate
Machine program product.Therefore, the embodiment of the present invention can be used complete hardware embodiment, complete software embodiment or combine software and
The form of the embodiment of hardware aspect.Moreover, the embodiment of the present invention can be used one or more wherein include computer can
With in the computer-usable storage medium (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.) of program code
The form of the computer program product of implementation.
The embodiment of the present invention be referring to according to the method for the embodiment of the present invention, terminal device (system) and computer program
The flowchart and/or the block diagram of product describes.It should be understood that flowchart and/or the block diagram can be realized by computer program instructions
In each flow and/or block and flowchart and/or the block diagram in process and/or box combination.It can provide these
Computer program instructions are set to general purpose computer, special purpose computer, Embedded Processor or other programmable data processing terminals
Standby processor is to generate a machine, so that being held by the processor of computer or other programmable data processing terminal devices
Capable instruction generates for realizing in one or more flows of the flowchart and/or one or more blocks of the block diagram
The device of specified function.
These computer program instructions, which may also be stored in, is able to guide computer or other programmable data processing terminal devices
In computer-readable memory operate in a specific manner, so that instruction stored in the computer readable memory generates packet
The manufacture of command device is included, which realizes in one side of one or more flows of the flowchart and/or block diagram
The function of being specified in frame or multiple boxes.
These computer program instructions can also be loaded into computer or other programmable data processing terminal devices, so that
Series of operation steps are executed on computer or other programmable terminal equipments to generate computer implemented processing, thus
The instruction executed on computer or other programmable terminal equipments is provided for realizing in one or more flows of the flowchart
And/or in one or more blocks of the block diagram specify function the step of.
Although the preferred embodiment of the embodiment of the present invention has been described, once a person skilled in the art knows bases
This creative concept, then additional changes and modifications can be made to these embodiments.So the following claims are intended to be interpreted as
Including preferred embodiment and fall into all change and modification of range of embodiment of the invention.
Finally, it is to be noted that, herein, relational terms such as first and second and the like be used merely to by
One entity or operation are distinguished with another entity or operation, without necessarily requiring or implying these entities or operation
Between there are any actual relationship or orders.Moreover, the terms "include", "comprise" or its any other variant meaning
Covering non-exclusive inclusion, so that process, method, article or terminal device including a series of elements not only wrap
Those elements are included, but also including other elements that are not explicitly listed, or further includes for this process, method, article
Or the element that terminal device is intrinsic.In the absence of more restrictions, limited by sentence " including one ... "
Element, it is not excluded that including identical being wanted in the process, method of the element, article or terminal device there is also other
Element.
The audio output of the audio-frequency inputting method to a kind of microphone provided by the present invention and a kind of microphone fills above
It sets, is described in detail, used herein a specific example illustrates the principle and implementation of the invention, above
The explanation of embodiment is merely used to help understand method and its core concept of the invention；Meanwhile for the general skill of this field
Art personnel, according to the thought of the present invention, there will be changes in the specific implementation manner and application range, in conclusion this
Description should not be construed as limiting the invention.
Claims (10)
1. a kind of audio-frequency inputting method of microphone, which is characterized in that the described method includes:
When collecting analog audio signal, the analog audio signal is input in audio coding decoding chip；
By the audio coding decoding chip, the analog audio signal is converted to the number of at least one digital audio format
Conversion signal, and the analog audio signal is converted to the analog-converted signal of at least one analogue audio frequency format；
By the digital conversion signal of at least one digital audio format and the mould of at least one analogue audio frequency format
Quasi- conversion signal is exported to the audio frequency apparatus of connection.
2. the method according to claim 1, wherein described by the audio coding decoding chip, by the mould
Quasi- audio signal is converted to the digital conversion signal of at least one digital audio format, and the analog audio signal is converted
Before analog-converted signal at least one analogue audio frequency format, further includes:
When collecting ambient noise signal, the ambient noise signal is input in audio coding decoding chip；
Correspondingly, it is described by the audio coding decoding chip, the analog audio signal is converted at least one digital sound
The digital conversion signal of frequency format, and the simulation that the analog audio signal is converted at least one analogue audio frequency format is turned
Change signal, comprising:
By the audio coding decoding chip, the amplitude of the analog audio signal and the ambient noise signal is subtracted each other, is obtained
To de-noising signal；
The de-noising signal is converted to the digital conversion signal of at least one digital audio format, and by the de-noising signal
Be converted to the analog-converted signal of at least one analogue audio frequency format.
3. the method according to claim 1, wherein the number by least one digital audio format
The analog-converted signal of conversion signal and at least one analogue audio frequency format is exported to before the audio frequency apparatus of connection,
Further include:
When detecting output gain adjustment instruction, gain factor is determined；
Correspondingly, described by the digital conversion signal of at least one digital audio format and at least one simulation
The analog-converted signal of audio format is exported to the audio frequency apparatus of connection, comprising:
By the amplitude of the analog-converted signal of at least one analogue audio frequency format multiplied by the gain factor, at least one is obtained
The analog gain signal of kind analogue audio frequency format；
By the digital conversion signal of at least one digital audio format and the mould of at least one analogue audio frequency format
Quasi- gain signal is exported to the audio frequency apparatus of connection.
4. the method according to claim 1, wherein the digital audio format include I2S output format and/or
S/PDIF output format.
5. the method according to claim 1, wherein the analogue audio frequency format include card agriculture output format and/
Or LINE_OUT output format.
6. a kind of audio output device of microphone, which is characterized in that described device includes:
First input module, for the analog audio signal being input to audio and compiles solution when collecting analog audio signal
In code chip；
Conversion module, for by the audio coding decoding chip, the analog audio signal to be converted at least one number
The digital conversion signal of audio format, and the analog audio signal is converted to the simulation of at least one analogue audio frequency format
Conversion signal；
Output module, for by the digital conversion signal of at least one digital audio format and at least one mould
The analog-converted signal of quasi- audio format is exported to the audio frequency apparatus of connection.
7. device according to claim 6, which is characterized in that described device further include:
Second input module, for the ambient noise signal being input to audio and compiles solution when collecting ambient noise signal
In code chip；
Correspondingly, the conversion module includes:
Noise reduction submodule, for by the audio coding decoding chip, the analog audio signal and the ambient noise to be believed
Number amplitude subtract each other, obtain de-noising signal；
Transform subblock, for the de-noising signal to be converted to the digital conversion signal of at least one digital audio format, with
And the de-noising signal is converted to the analog-converted signal of at least one analogue audio frequency format.
8. device according to claim 6, which is characterized in that described device further include:
Determining module, for determining gain factor when detecting output gain adjustment instruction；
Correspondingly, the output module includes:
Gain submodule, for by the amplitude of the analog-converted signal of at least one analogue audio frequency format multiplied by the gain
Multiple obtains the analog gain signal of at least one analogue audio frequency format；
Output sub-module, for by the digital conversion signal of at least one digital audio format and at least one
The analog gain signal of analogue audio frequency format is exported to the audio frequency apparatus of connection.
9. device according to claim 6, which is characterized in that the digital audio format include I2S output format and/or
S/PDIF output format.
10. device according to claim 6, which is characterized in that the analogue audio frequency format include card agriculture output format and/
Or LINE_OUT output format.
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| CN201711499072.5A CN108962273A (en) | 2017-12-29 | 2017-12-29 | A kind of audio-frequency inputting method and device of microphone |
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| CN201711499072.5A CN108962273A (en) | 2017-12-29 | 2017-12-29 | A kind of audio-frequency inputting method and device of microphone |
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