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Voice signal processing method, apparatus, and system

A speech signal processing and speech signal technology, applied in speech analysis, instruments, etc., can solve the problems of limiting the difference of signal processing and affecting the normal operation of the back-end speech recognition system, so as to improve the speech signal recognition rate and realize dynamic difference The effect of control

Active Publication Date: 2016-04-20
BAIDU ONLINE NETWORK TECH (BEIJIBG) CO LTD
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  • Abstract
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  • Application Information

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Problems solved by technology

However, the current DRC curve is a fixed curve, which limits the variance of different signal processing and affects the normal operation of the back-end speech recognition system

Method used

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  • Voice signal processing method, apparatus, and system
  • Voice signal processing method, apparatus, and system
  • Voice signal processing method, apparatus, and system

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Embodiment Construction

[0030] Embodiments of the present application are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary, and are intended to explain the present application, and should not be construed as limiting the present application.

[0031] The voice signal processing method, device, and system of the embodiments of the present application are described below with reference to the accompanying drawings.

[0032] figure 1 It is a flow chart of the voice signal processing method in one embodiment of the present application.

[0033] Such as figure 1 As shown, the voice signal processing method includes:

[0034] Step 101: Divide a preset signal adjustment interval into multiple amplification intervals according to a preset division point.

[0035] Sinc...

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Abstract

The application provides a voice signal processing method, apparatus, and system. The method comprises: a preset signal adjusting zone is segmented into a plurality of amplification zones according to preset segmentation points; and with a diagonal line of a control coordinate as a reference coordinate, a dynamic range control curve that increases progressively and monotonously and corresponds to the plurality of amplification zones is generated according to a preset target gain at the area above the diagonal line. With the method, apparatus, and system, dynamic difference control of a voice signal amplitude is realized; the voice signal identification rate is improved; and the robustness of the voice system identification is also enhanced.

Description

technical field [0001] The present application relates to the technical field of speech recognition processing, and in particular to a speech signal processing method, device and system. Background technique [0002] With the development of speech recognition technology, the application fields of speech recognition system are becoming wider and wider, such as: vehicle speech recognition system, far-field speech recognition system, speech input method system and smart home system. Since the distance between the microphone and the speaker can be close or far, the voice energy recorded at close range is large enough. As the distance increases, the attenuation of voice energy will cause the recognition rate of the speech recognizer to drop sharply. [0003] Dynamic Range Control (DRC) is an essential technology in voice communication, that is, gain processing is performed on the input signal according to the DRC curve. However, the current DRC curve is a fixed curve, which limi...

Claims

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Application Information

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IPC IPC(8): G10L21/0364
CPCG10L21/0364
Inventor 崔玮玮魏建强徐杨飞
Owner BAIDU ONLINE NETWORK TECH (BEIJIBG) CO LTD