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A method and device for real-time sound mixing

A sound mixing and non-real-time technology, applied to instruments, electro-acoustic musical instruments, etc., can solve the problems of asynchronous audio data collection and accompaniment audio data, audio data collection delay, audio data time deviation, etc., to avoid adjusting time deviation operation , improve efficiency, and eliminate the effect of merging out of sync

Active Publication Date: 2015-12-09
YEELION ONLINE NETWORK TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the prior art, the computer karaoke system usually realizes the playback of the accompaniment audio data by an independent playback module of one road, collects and plays back the real-time audio data from the microphone by another independent acquisition module, because the collection of real-time audio data requires hardware and its Driver cooperation, hardware and drivers of different manufacturers have certain differences in function, performance and precision, plus different versions of the operating system to implement the acquisition interface differences and various data buffers caused by different system loads , Transmission delay, resulting in delays in the collection of audio data, temporary freezes, frame drop, frame accumulation, etc., resulting in time deviations between the two audio data, which eventually lead to asynchronous collection of audio data and accompaniment audio data
Therefore, before the audio data is superimposed, it is necessary to adjust the step consistency in advance to complete the audio mixing, but at the same time it also brings the problem of low mixing efficiency.

Method used

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  • A method and device for real-time sound mixing

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] In the field of audio technology, audio can be divided into real-time audio and non-real-time audio. Real-time audio is the sound received by the system in real time without any processing, such as the human voice received by the microphone. Non-real-time audio is just the opposite of real-time audio. , which is the processed audio, such as saved MP3 audio, etc. In this embodiment, real-time audio data is used as a driver to promote the entire processing flow of sound mixing, accurately grasp the time of sound mixing, and eliminate the problem of asynchronous merging of audio data.

[0039] refer to figure 1 , figure 1 The flow chart of the method for real-time audio mixing provided in this embodiment specifically includes:

[0040] Step 101: When real-time audio data of a preset time period is received, acquire non-real-time audio data of the preset time period.

[0041] In this embodiment, the acquisition of real-time data is used as a drive, and when real-time aud...

Embodiment 2

[0060] In actual operation, real-time sound mixing technology can be applied to computer karaoke systems, and can be used to realize the recording function of "what you hear is what you get". Audio in formats such as MP3 or video with audio in formats such as MV stored in the computer karaoke system is non-real-time audio and can be audio for accompaniment. Realize the real-time singing and recording functions of the computer karaoke system by mixing the human voice with the accompanying music.

[0061] refer to image 3 , image 3 For being applied to the real-time sound mixing method flowchart in the computer karaoke system, specifically as follows:

[0062] Step 301: Obtain the sampling parameters of the accompaniment audio to be mixed stored in the computer karaoke system.

[0063] Step 302: According to the sampling parameters, preset the sampling parameters of the vocal data from the microphone.

[0064] Step 303: Obtain vocal data from the microphone according to th...

Embodiment 3

[0079] refer to Figure 4 , Figure 4 The structural diagram of the real-time sound mixing device provided for this embodiment specifically includes:

[0080] The first acquiring module 401 is configured to acquire the non-real-time audio data of the preset time period when receiving the real-time audio data of the preset time period;

[0081] The sound mixing module 402 is configured to combine the real-time audio data and the non-real-time audio data to obtain mixed audio data.

[0082] In order to avoid the audio resampling step before mixing, this embodiment provides a device for obtaining real-time audio data with the same sampling parameters as non-real-time audio data, the device comprising:

[0083] The second obtaining module is used to obtain sampling parameters of non-real-time audio data;

[0084] A setting module, configured to preset sampling parameters of real-time audio data according to the sampling parameters of the non-real-time audio data;

[0085] A th...

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Abstract

The embodiment of the invention discloses a real-time sound mixing method and device. The method comprises the following steps: firstly, acquiring non-real time audio data of a preset time slot when real-time audio data of the preset time slot is received; secondly, merging the real-time audio data and the non-real time audio data to obtain sound mixing audio data. During such a process, the whole processing flow of sound mixing is promoted by the real-time audio data, and therefore, the sound mixing time is accurately mastered, the problem that the audio data merge is non-synchronous is solved, a time deviation adjustment operation is avoided, the sound mixing efficiency is improved, and the real-time sound mixing technology taking the time of the real-time audio data as the standard is realized in the true sense. Further, sampling parameters of the real-time audio data are preset by the real-time sound mixing method and device disclosed by the invention, and therefore, an audio resampling operation before the sound mixing is avoided, and the sound mixing efficiency is effectively improved.

Description

technical field [0001] The invention relates to the field of audio data, in particular to a method and device for real-time sound mixing. Background technique [0002] Mixing, that is, the superposition of multiple channels of audio data, is widely used in the field of audio data. Among them, this technology is used in the computer karaoke system to superimpose the real-time audio data from the microphone and the accompaniment audio data output by playback and decoding. Realize real-time singing and recording functions. [0003] In the prior art, the computer karaoke system usually realizes the playback of the accompaniment audio data by an independent playback module of one road, collects and plays back the real-time audio data from the microphone by another independent acquisition module, because the collection of real-time audio data requires hardware and its Driver cooperation, hardware and drivers of different manufacturers have certain differences in function, perform...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G10H1/36
Inventor 刘晓峰董坤
Owner YEELION ONLINE NETWORK TECH BEIJING