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Method and device for determining non-noise audio signal classification

An audio signal and non-noise technology, which is applied in the field of determining the category of non-noise audio signals, can solve the problems of unfavorable algorithm independence, portability, and tight coupling, and achieve the effect of enhancing independence and portability

Active Publication Date: 2009-04-01
苏州贡湖精密制造产业发展有限公司
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  • Summary
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  • Application Information

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Problems solved by technology

[0005] In the process of realizing the present invention, the inventors have found that there are at least the following problems in the prior art: the characteristic parameters used by the VAD module contained in the algorithm of the existing speech coding standard and the coupling degree of the encoder algorithm are relatively tight, which is not conducive to the independence of the algorithm. and portability

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Embodiment Construction

[0017] Below in conjunction with accompanying drawing and embodiment, the specific embodiment of the present invention is described in further detail:

[0018] A device for determining the category of a non-noise audio signal in an embodiment of the present invention is as follows: figure 1 As shown, it includes a feature parameter acquiring unit 11 , a first judging unit 12 , a second judging unit 13 and a state transition unit 14 . The first judging unit 12 is respectively connected to the feature parameter acquisition unit 11 and the second judging unit 13 , and the second judging unit 13 is connected to the state transition unit 14 .

[0019] The feature parameter acquisition unit 11 is used to obtain the feature parameter of the non-noise audio signal; the first decision unit 12 is used to utilize the decision tree to preliminarily judge the category of the non-noise audio signal according to the feature parameter acquired by the feature parameter acquisition unit 11; the...

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Abstract

The invention discloses a method for determining categories of non-noise audio signals. Firstly, characteristic parameters of the non-noise audio signals are obtained. Then, the categories of the non-noise audio signals are judged primarily by a decision tree according to the characteristic parameters. At last, the categories of the non-noise audio signals are determined according to contexts of the non-noise audio signals and the result of the primary judgment. A device for determining the categories of the non-noise audio signals is also disclosed. The categories of the non-noise audio signals are judged by the characteristic parameters of the non-noise audio signals which do not depend on encoder algorithm. And the independence and the portability of the algorithm are enhanced.

Description

technical field [0001] The invention relates to the technical field of wireless communication, in particular to a method and a device for determining the category of a non-noise audio signal. Background technique [0002] With the rapid development of wireless communication technology, VAD (Voice Activity Detection, voice activity detection) technology has been widely used. Each VAD method uses a variety of feature parameters, most of which come from or derive from the feature parameters generated during the encoding process of the encoder. For example, GSM (Global System for Mobile communication, Global System for Mobile Communications) has formulated four kinds of speech coder specifications, namely GSM full rate, GSM enhanced full rate, GSM half rate and adaptive multi-rate speech coder, and the coding on which they are based Algorithms are different, but they all include a VAD module that detects voice signals from communication signals. Among them, the three VAD algor...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G10L11/00G10L11/02G10L19/00G10L19/14G10L25/48
CPCH05K999/99G10L25/48G10L15/02
Inventor 王珺王喆
Owner 苏州贡湖精密制造产业发展有限公司