CN107978318A - A kind of real-time sound mixing method and device - Google Patents
A kind of real-time sound mixing method and device Download PDFInfo
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- CN107978318A CN107978318A CN201610920610.2A CN201610920610A CN107978318A CN 107978318 A CN107978318 A CN 107978318A CN 201610920610 A CN201610920610 A CN 201610920610A CN 107978318 A CN107978318 A CN 107978318A
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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
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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
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Abstract
The invention discloses a kind of real-time sound mixing method, the described method includes：Obtain and preserve real-time pulse coded modulation (PCM) data of the first audio and obtain the real-time PCM data of the second audio, after the real-time PCM data of second audio is got, the real-time PCM data of first audio of reading and saving；Wherein, the real-time PCM data of first audio is decoded in advance；The real-time PCM data of first audio read and the real-time PCM data of second audio are subjected to stereo process, obtain real-time sound mixing data.The present invention further simultaneously discloses a kind of real-time sound mixing device.
Description
Technical field
The present invention relates to audio signal processing technique, and in particular to a kind of real-time sound mixing method and device.
Background technology
Karaoke (KTV, Karaoke Television) is the work that people carry out friend's party, amusement and recreation often select
One of move, but sometimes, because of region between friend or temporal barrier, together KTV can not be gone to sing, also, go
KTV singings expense is also very high.Therefore, network KTV singings system is just more and more prevailing, as long as user passes through network machine top box or shifting
Dynamic terminal such as mobile phone, downloads network KTV singing softwares, after installation, it is possible to sung by the network KTV singings software,
And after the song sung cooperation accompaniment music is together preserved, share with friend, so that it may realize the purpose sung together with friend.
But existing network KTV singings software is usually required for user after a song has been sung, in the software
Tuning interface carry out tuning, such as, adjust volume, reverberation effect, balanced device effect of voice or accompaniment etc.；Also,
Also need constantly to carry out audition after tuning, can just be confirmed whether to reach the effect that user wants, confirming that reaching user wants
Effect and then stereo process is carried out to voice and music, obtain finally singing works, can not accomplish to do voice and music
To real-time sound mixing, i.e.,：The audio mixing when singing.So so that user finally obtains the process too complex for singing works, short time consumption
It is long, influence user's singing experience.
The content of the invention
To solve existing technical problem, an embodiment of the present invention is intended to provide a kind of real-time sound mixing method and device,
Real-time sound mixing processing can be carried out to the different voice datas got.
What the technical solution of the embodiment of the present invention was realized in：
One side according to embodiments of the present invention, there is provided a kind of real-time sound mixing method, the described method includes：
Obtain and preserve the real-time pulse coded modulation PCM data of the first audio and obtain the real-time PCM numbers of the second audio
According to, after the real-time PCM data of second audio is got, the real-time PCM data of first audio of reading and saving；Its
In, the real-time PCM data of first audio is decoded in advance；
The real-time PCM data of the real-time PCM data of first audio read and second audio is mixed
Sound processing, obtains real-time sound mixing data.
In such scheme, after the real-time PCM data of the second audio of the acquisition, the method further includes：
Reverberation processing is carried out to the real-time PCM data of second audio.
In such scheme, after the real-time PCM data of first audio of the reading and saving, the method is also wrapped
Include：
Detect in the real-time PCM data of first audio and the real-time PCM data of second audio read
Whether audio sample rate and/or channel number are identical；
Detect that the audio in the real-time PCM data of first audio and the real-time PCM data of second audio is adopted
When sample rate and/or channel number are different, the real-time PCM data of first audio to reading carry out audio resampling and/or
Sound channel mixes contracting again so that the real-time PCM data of first audio is identical with the real-time PCM data of second audio.
In such scheme, it is described obtain real-time sound mixing data after, the method further includes：
Preserve the real-time sound mixing data.
Another aspect according to embodiments of the present invention, there is provided a kind of real-time sound mixing device, described device include：First obtains
Take unit, the first storage unit, second acquisition unit, data-reading unit and downmixing unit；Wherein,
The first acquisition unit, for obtaining the real-time PCM data of the first audio, the real-time PCM of first audio
Data are decoded in advance；
First storage unit, first audio got for preserving the first acquisition unit it is real-time
PCM data；
The second acquisition unit, for obtaining the real-time PCM data of the second audio；
The data-reading unit, the real-time PCM data of second audio is got for the second acquisition unit
Afterwards, the real-time PCM data for first audio that first storage unit preserves is read；
The downmixing unit, for the real-time PCM data for first audio for reading the data-reading unit
The real-time PCM data of second audio got with second acquisition unit carries out stereo process, obtains real-time sound mixing data.
In such scheme, described device further includes：
First processing units, for the real-time PCM data of second audio got to the second acquisition unit
Carry out reverberation processing.
In such scheme, described device further includes：Detection unit and second processing unit；Wherein,
The detection unit, the real-time PCM numbers of first audio read for detecting the data-reading unit
According to the audio sample rate and/or sound channel in the real-time PCM data of second audio got with the second acquisition unit
Whether number is identical；
The second processing unit, detect that the data-reading unit reads for the detection unit described
Sound in the real-time PCM data for second audio that the real-time PCM data of one audio is got with the second acquisition unit
When frequency sampling rate and/or different channel number, audio resampling and/or sound channel are carried out to the real-time PCM data of first audio
Contracting is mixed again, makes the real-time PCM data of first audio identical with the real-time PCM data of second audio.
In such scheme, described device further includes：
Second storage unit, for preserving the real-time sound mixing data after the downmixing unit audio mixing.
The embodiment of the present invention provides a kind of real-time sound mixing method and device, and the real-time pulse for obtaining and preserving the first audio is compiled
Code modulation (PCM, Pulse Code Modulation) data and the real-time PCM data for obtaining the second audio, and getting
After the real-time PCM data for stating the second audio, the real-time PCM data of first audio of reading and saving, wherein, first sound
The real-time PCM data of frequency is decoded in advance；By the real-time PCM data of first audio read and second sound
The real-time PCM data of frequency carries out stereo process, obtains real-time sound mixing data.In this way, by obtaining the first audio and the second audio
Real-time PCM data, then after two kinds of different real-time PCM datas are carried out audio mixings, with regard to real-time sound mixing data can be obtained, in this way,
After user has sung a song, audio mixing effect is also and then completed together, and user need not enter back into the tuning of singing software
Interface, carries out complicated and time-consuming various tunings operation, greatly improves user experience.
Brief description of the drawings
Fig. 1 realizes flow diagram for a kind of real-time sound mixing method of the embodiment of the present invention；
Fig. 2 is a kind of composition structure diagram of real-time sound mixing device of the embodiment of the present invention.
Embodiment
The embodiment of the present invention is described in detail below in conjunction with the accompanying drawings.It should be appreciated that this place is retouched
The embodiment stated is merely to illustrate and explain the present invention, and is not intended to limit the invention.
Fig. 1 realizes flow diagram for a kind of real-time sound mixing method of the embodiment of the present invention；As shown in Figure 1, this method bag
Include：
Step 101, obtain and preserve the real-time PCM data of the first audio and obtain the real-time PCM data of the second audio,
After the real-time PCM data for getting second audio, the real-time PCM data of first audio of reading and saving；Wherein, institute
The real-time PCM data for stating the first audio is decoded in advance；
Here, real-time PCM data is the data that singing system real-time reception arrives.Specifically, in the broadcasting of singing system
The real-time PCM data of the first audio is obtained in process, and preserves the real-time PCM data of first audio got；Wherein,
Local accompaniment music file that first audio can be stored in the singing system or come in automatic network
Online music file.In the recording process of singing system, the real-time PCM data of the second audio is obtained by microphone, also,
After the real-time PCM data of second audio is got, the real-time PCM data of second audio is carried out at reverberation
Reason；Wherein, second audio can be the sound of people.Due to before the real-time PCM data of first audio is obtained,
Decoding process has been carried out in advance to the real-time PCM data of first audio, so, first audio got it is real-time
PCM data is now in buffer status；After the real-time PCM data of second audio is got by microphone, at reading
In the real-time PCM data of first audio of buffer status；And read first audio real-time PCM data it
Afterwards, the audio detected in the real-time PCM data of first audio read and the real-time PCM data of second audio is adopted
Whether sample rate and/or channel number are identical；If detect the real-time of the real-time PCM data of first audio and second audio
When audio sample rate in PCM data and/or different channel number, then the real-time PCM data to first audio read
Carry out audio resampling and/or sound channel and mix contracting again so that the real-time PCM data of first audio and the reality of second audio
When PCM data it is identical.Here, due to carrying out audio resampling to the real-time PCM data of first audio, it is not necessary to set in advance
The sampling parameter of the second audio is put, so so that the process flow in the embodiment of the present invention is easier.In the embodiment of the present invention
In, the real-time PCM data progress sound channel to first audio is mixed contracting and is referred to again：Reading the real-time of second audio
After PCM data, if the sound channel for detecting second audio is two sound channels, the sound channel of first audio is a sound
During road, then the sound channel of first audio is become into two sound channels.It so, it is possible elimination voice data and merge nonsynchronous ask
Topic, avoids adjustment time biased operation, improves audio mixing efficiency.
Step 102, by the real-time PCM data of first audio read and the real-time PCM numbers of second audio
According to stereo process is carried out, real-time sound mixing data are obtained.
Here, progress resampling and/or sound channel are mixed to the real-time PCM data and the second audio of the first audio after contracting again
Real-time PCM data carry out addition of waveforms, the operation such as amplitude limit, complete the merging of voice data, obtain real-time sound mixing data, and protect
The real-time sound mixing data after merging are deposited, subsequently to be played back to real-time sound mixing data.
In embodiments of the present invention, the real-time sound mixing method can be applied to karaoke OK system and/or network K song systems
In.Wherein, the karaoke OK system is primarily referred to as, the K song systems of the fixed terminal installation used in KTV；The network K songs
System is primarily referred to as, the K song systems of the mobile terminal such as mobile phone, PAD installation.User can played by the embodiment of the present invention
While coming automatic network and/or local accompaniment music, the voice from microphone is recorded, since accompaniment music and voice are all
Real-time, therefore, after user has sung a song, audio mixing effect is also and then completed together, and user need not enter back into
The tuning interface of singing system carries out complicated and time-consuming various tunings operation, greatly improves user experience.
Fig. 2 is a kind of composition structure diagram of real-time sound mixing device of the embodiment of the present invention, as shown in Fig. 2, described device
Including：First acquisition unit 201, the first storage unit 202, second acquisition unit 203, data-reading unit 204 and audio mixing list
Member 205；Wherein,
The first acquisition unit 201, for obtain the first audio real-time PCM data, first audio it is real-time
PCM data is decoded in advance；
First storage unit 202, first audio got for preserving the first acquisition unit 201
Real-time PCM data；
The second acquisition unit 203, for obtaining the real-time PCM data of the second audio；
The data-reading unit 204, the real-time of second audio is got for the second acquisition unit 203
After PCM data, the real-time PCM data for first audio that first storage unit 202 preserves is read；
The downmixing unit 205, for the real-time of first audio that reads the data-reading unit 204
The real-time PCM data for second audio that PCM data and second acquisition unit 203 are got carries out stereo process, obtains reality
When audio mixing data.
Here, real-time PCM data is the data that singing system real-time reception arrives.In embodiments of the present invention, the dress
Put and further include first processing units 206, detection unit 207,208 and second storage unit 209 of second processing unit.Specifically,
The first acquisition unit 201 obtains the real-time PCM data of the first audio in the broadcasting process of singing system, and is getting
After the real-time PCM data of first audio, first storage unit 202 is triggered, is preserved by first storage unit 202
The real-time PCM data of first audio；Wherein, the real-time PCM data of first audio can be stored in the system
In local accompaniment music file or carry out the online music file in automatic network.
The second acquisition unit 203 obtains the reality of the second audio by microphone in the recording process of singing system
When PCM data, also, after the real-time PCM data that the second acquisition unit 203 gets second audio, triggering
The first processing units 206, reverberation is carried out by the first processing units 206 to the real-time PCM data of second audio
Processing.Wherein, since the first acquisition unit 201 is before the real-time PCM data of first audio is obtained, to described
The real-time PCM data of first audio has carried out decoding process in advance, so, the first acquisition unit 201 gets described
The real-time PCM data of first audio is in buffer status in first storage unit 202 at this time；The second acquisition unit
After 203 get the real-time PCM data of second audio by microphone, triggered by the first processing units 206 described
Data-reading unit 204, then first sound is read from first storage unit 202 by the data-reading unit 204
The real-time PCM data of frequency.
It is single to trigger the detection after the real-time PCM data of first audio is read for the data-reading unit 204
Member 207, the real-time PCM numbers for first audio that the data-reading unit 204 is read are detected by the detection unit 207
According to the audio sample rate and/or sound in the real-time PCM data of second audio got with the second acquisition unit 203
Whether road number is identical；When the detection unit 207 detects first audio that the data-reading unit 204 reads
Audio sample in the real-time PCM data for second audio that real-time PCM data is got with the second acquisition unit 203
When rate and/or different channel number, then the second processing unit 208 is triggered, by the second processing unit 208 to described first
The real-time PCM data of audio carries out audio resampling and/or sound channel and mixes contracting again so that the real-time PCM data of first audio
It is identical with the real-time PCM data of second audio.Specifically, real-time PCM of the second processing unit 208 to first audio
Data are carried out before audio resampling, it is not necessary to pre-set sampled data so that the process flow that the present invention is implemented is simpler
Just；Second processing unit 208 carries out the real-time PCM data of first audio sound channel, and mixed contracting refers to again：Obtained described second
Take after unit 203 gets the real-time PCM data of second audio, if detection unit 207 detects second sound
The sound channel of frequency is two sound channels, when the sound channel of first audio is a sound channel, is then become the sound channel of first audio
Two sound channels.It so, it is possible to eliminate the nonsynchronous problem of voice data merging, avoid adjustment time biased operation, improve
Audio mixing efficiency.
Treat the second processing unit 208 to the real-time of the real-time PCM data of first audio and second audio
After PCM data progress resampling and/or sound channel mix contracting again, resampling and/or sound will be carried out by the data-reading unit 204
The real-time PCM data that road mixes the first audio after contracting again is sent to the downmixing unit 205, will by the downmixing unit 205
The real-time PCM data and the second acquisition unit 203 for carrying out the first audio that resampling and/or sound channel are mixed after contracting again
The real-time PCM data of second audio got carries out the operation such as addition of waveforms, amplitude limit, completes the merging of voice data,
Real-time sound mixing data are obtained, and trigger second storage unit 209, the audio mixing is preserved by second storage unit 209
The real-time sound mixing data after the merging of unit 205, subsequently to be played back to it.
In embodiments of the present invention, the real-time sound mixing device can be applied to karaoke OK system and/or network K song systems
In.Wherein, the karaoke OK system is primarily referred to as, the K song systems of the fixed terminal installation used in KTV；The network K songs
System is primarily referred to as, the K song systems of the mobile terminal such as mobile phone, PAD installation.User can played by the embodiment of the present invention
While coming automatic network and/or local accompaniment music, the voice from microphone is recorded, since accompaniment music and voice are all
Real-time, therefore, after user has sung a song, audio mixing effect is also and then completed together, and user need not enter back into
The tuning interface of singing system carries out complicated and time-consuming various tunings operation, greatly improves user experience, makes real-time
It is stronger.
In practical applications, the first acquisition unit 201, the first storage unit 202, second acquisition unit 203, data
Reading unit 204, downmixing unit 205, first processing units 206, detection unit 207, second processing unit 208 and second preserve
Unit 209 can be by the central processing unit (CPU) in real-time sound mixing device, microprocessor (MPU), digital signal processor
(DSP) or field programmable gate array (FPGA) etc. is realized.
It should be understood by those skilled in the art that, the embodiment of the present invention can be provided as method, system or computer program
Product.Therefore, the shape of the embodiment in terms of the present invention can use hardware embodiment, software implementation or combination software and hardware
Formula.Moreover, the present invention can use the computer for wherein including computer usable program code in one or more to use storage
The form for the computer program product that medium is implemented on (including but not limited to magnetic disk storage and optical memory etc.).
The present invention be with reference to according to the method for the embodiment of the present invention, the flow of equipment (system) and computer program product
Figure and/or block diagram describe.It should be understood that it can be realized by computer program instructions every first-class in flowchart and/or the block diagram
The combination of flow and/or square frame in journey and/or square frame and flowchart and/or the block diagram.These computer programs can be provided
The processors of all-purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices is instructed to produce
A raw machine so that the instruction performed by computer or the processor of other programmable data processing devices, which produces, to be used in fact
The device for the function of being specified in present one flow of flow chart or one square frame of multiple flows and/or block diagram or multiple square frames.
These computer program instructions, which may also be stored in, can guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works so that the instruction being stored in the computer-readable memory, which produces, to be included referring to
Make the manufacture of device, the command device realize in one flow of flow chart or multiple flows and/or one square frame of block diagram or
The function of being specified in multiple square frames.
These computer program instructions can be also loaded into computer or other programmable data processing devices so that counted
Series of operation steps is performed on calculation machine or other programmable devices to produce computer implemented processing, thus in computer or
The instruction performed on other programmable devices is provided and is used for realization in one flow of flow chart or multiple flows and/or block diagram one
The step of function of being specified in a square frame or multiple square frames.
The foregoing is only a preferred embodiment of the present invention, is not intended to limit the scope of the present invention.
Claims (8)
- A kind of 1. real-time sound mixing method, it is characterised in that the described method includes：Obtain and preserve the real-time pulse coded modulation PCM data of the first audio and obtain the real-time PCM data of the second audio, After the real-time PCM data for getting second audio, the real-time PCM data of first audio of reading and saving；Wherein, institute The real-time PCM data for stating the first audio is decoded in advance；The real-time PCM data of first audio read and the real-time PCM data of second audio are carried out at audio mixing Reason, obtains real-time sound mixing data.
- 2. according to the method described in claim 1, it is characterized in that, it is described acquisition the second audio real-time PCM data after, The method further includes：Reverberation processing is carried out to the real-time PCM data of second audio.
- 3. according to the method described in claim 1, it is characterized in that, the reading and saving first audio it is real-time After PCM data, the method further includes：Detect the real-time PCM data of first audio read and the audio in the real-time PCM data of second audio Whether sample rate and/or channel number are identical；Detect the audio sample rate in the real-time PCM data of first audio and the real-time PCM data of second audio And/or during channel number difference, the real-time PCM data of first audio to reading carries out audio resampling and/or sound channel Contracting is mixed again so that the real-time PCM data of first audio is identical with the real-time PCM data of second audio.
- 4. according to the method described in claim 1, it is characterized in that, it is described obtain real-time sound mixing data after, the method Further include：Preserve the real-time sound mixing data.
- 5. a kind of real-time sound mixing device, it is characterised in that described device includes：First acquisition unit, the first storage unit, second Acquiring unit, data-reading unit and downmixing unit；Wherein,The first acquisition unit, for obtaining the real-time PCM data of the first audio, the real-time PCM data of first audio Decoded in advance；First storage unit, the real-time PCM numbers of first audio got for preserving the first acquisition unit According to；The second acquisition unit, for obtaining the real-time PCM data of the second audio；The data-reading unit, after the real-time PCM data that second audio is got for the second acquisition unit, reads Take the real-time PCM data of first audio of the first storage unit preservation；The downmixing unit, for the real-time PCM data and for first audio for reading the data-reading unit The real-time PCM data for second audio that two acquiring units are got carries out stereo process, obtains real-time sound mixing data.
- 6. device according to claim 5, it is characterised in that described device further includes：First processing units, the real-time PCM data of second audio for being got to the second acquisition unit carry out Reverberation is handled.
- 7. device according to claim 5, it is characterised in that described device further includes：Detection unit and second processing list Member；Wherein,The detection unit, the real-time PCM data of first audio read for detecting the data-reading unit with Audio sample rate and/or channel number in the real-time PCM data for second audio that the second acquisition unit is got are It is no identical；The second processing unit, first sound that the data-reading unit reads is detected for the detection unit Audio in the real-time PCM data for second audio that the real-time PCM data of frequency is got with the second acquisition unit is adopted When sample rate and/or different channel number, audio resampling is carried out to the real-time PCM data of first audio and/or sound channel is mixed again Contracting, makes the real-time PCM data of first audio identical with the real-time PCM data of second audio.
- 8. device according to claim 5, it is characterised in that described device further includes：Second storage unit, for preserving the real-time sound mixing data after the downmixing unit audio mixing.
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| CN109375892A (en) * | 2018-10-12 | 2019-02-22 | 北京微播视界科技有限公司 | Method and apparatus for playing audio |
| CN109410970A (en) * | 2018-10-12 | 2019-03-01 | 北京微播视界科技有限公司 | Method and apparatus for generating audio data |
| CN110415716A (en) * | 2019-07-05 | 2019-11-05 | 深圳前海达闼云端智能科技有限公司 | Audio mixing method and device, storage medium and electronic equipment |
| CN113205822A (en) * | 2021-04-02 | 2021-08-03 | 苏州开心盒子软件有限公司 | Multi-channel audio data recording and sound mixing method and device and storage medium |
| CN113539279A (en) * | 2020-04-16 | 2021-10-22 | 腾讯科技（深圳）有限公司 | Audio data processing method and device and computer readable storage medium |
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