Multi-channel voice simulation and acquisition method
A channel simulation and acquisition method technology, applied in speech analysis, speech recognition, instruments, etc., can solve problems such as channel mismatch, and achieve the effect of reducing acquisition cost and improving data acquisition efficiency
Active Publication Date: 2014-04-16
ANHUI IFLYTEK INTELLIGENT SYST
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Problems solved by technology
[0008] The technical problem to be solved by the present invention: the technical problem to be solved by the present invention is the channel mismatch problem of training data and test data in the voice recognition system under complex channel environment, and effectively improve the collection efficiency of multiple channel voice data
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[0021]The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.
[0022] The overall processing flow of the present invention is as figure 1 Shown, the steps that the present invention needs to implement are as follows:
[0023] 1) Multi-microphone microphone
[0024] The microphones selected in this case are commonly used in various mobile devices, including dynamic microphones, electret microphones, silicon microphones, etc., to achieve coverage of mainstream microphone channels. Taking the 8-microphone collector as an example, the types of each microphone and their simulated voice channels are shown in Table 1;
[0025] Table 1 Microphone types and their corresponding simulated voice channels
[0026] microphone number
microphone type
voice channel
1
silicon microphone
Telecom CDMA
2
electret microphone
Fixed telephone
3
silicon microphone
Mo...
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The invention provides a multi-channel voice simulation and acquisition method. According to the multi-channel voice simulation and acquisition method, various types of microphones are adopted for achieving synchronous acquisition of multi-channel voice, and the microphone channel covering capacity of training voice is improved; different voice coding and decoding methods are adopted to achieve channel simulation of various coding methods. According to the multi-channel voice simulation and acquisition method, due to the fact that multiple channels are adopted for synchronous acquisition and simulation of various voice channels, voice data which are processed by the various voice channels can be obtained rapidly; compared with an existing multi-channel data acquisition method, the multi-channel voice simulation and acquisition method has the advantages that the data acquisition efficiency can be greatly improved, and multi-channel data acquisition cost is reduced.
Description
technical field [0001] The invention relates to the technical field of voice signal processing, in particular to a voice multi-channel simulation and acquisition method. Background technique [0002] In the process of voice communication, the voice signal will have a certain loss in the process of acquisition, encoding, decoding and channel transmission, which will cause the voice signal to be distorted, and different acquisition devices and different codec methods have different degrees of voice distortion. Due to the different distortions of speech signals caused by arbitrary changes in communication channels and communication tools, the channel mismatch between training data and test data in speech recognition processing has seriously affected continuous speech recognition, voiceprint recognition, language recognition and speech recognition. The application effect of speech recognition technology such as emotion recognition. Therefore, in the field of speech recognition ...
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IPC IPC(8): G10L15/06G10L17/00
Inventor 王建社柳林胡国平
Owner ANHUI IFLYTEK INTELLIGENT SYST