Voice identification method utilizing segmenting-layering construction method

Abstract

The invention provides a voice identification method utilizing a segmenting-layering construction method. The method comprises the following steps of: first, acquiring a voice signal and framing the voice signal; then, extracting voice characteristic parameters and calculating normalized complexity energy and normalized zero-crossing rate of each frame of voice; next, segmenting the voice, wherein each segmented voice only has a single word or double words; and finally, identifying each segmented voice respectively. By the method, the dependence of an identification result on the segmenting precision is reduced; when the pronunciations of two words are continuous and are difficult to segment, the two words are identified by adopting a two-layer layering construction method, and the computation amount of the two-layer layering construction method is acceptable and can be finished in real time; and therefore, the identification effect and the identification time consumption are ensured at the same time.

Description

technical field [0001] The invention relates to the field of speech recognition, especially continuous speech recognition technology. Background technique [0002] In the continuous speech recognition technology, two methods are usually adopted, that is, the layered construction method is adopted in the whole, or the speech signal is first cut into isolated words, and then the result is obtained by matching. However, these two methods have their own advantages and disadvantages. If the layered construction method is used in general, although the recognition rate is high, the calculation amount is too large and it is difficult to complete it in real time. If the cutting method is used, although the calculation amount is small, the recognition effect depends heavily on In continuous Chinese speech, sometimes it is difficult to accurately judge the boundaries between characters, which will affect the recognition effect. Contents of the invention [0003] In order to overcome...

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Problems solved by technology

However, these two methods have their own advantages and disadvantages. If the layered construction method is used in general, although the recognition rate is high, the calculation amount is too large and it is difficult to complete it in real time. If the cutting method is used, although the calculation amount is small, the recognition effect depends heavily on In continuous Chinese speech, sometimes it is difficult to accurately judge the boundaries between characters, which will affect the recognition effect

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