Shanghai dialect phonetic recognition information processing method

Abstract

The invention relates to a Shanghai dialect phonetic recognition information processing method, which includes steps that: 1) a voice input device inputs Shanghai dialect signals; 2) a preprocessing module preprocesses the input Shanghai dialect phonetic signals; 3) a feature extraction module extracts feature parameters reflecting signal features; 4) a training module performs preprocessing and feature parameter extraction on training phonetic signals input by users for a plurality of times to obtain feature vector parameters and then a feature modeling module builds a reference model base for training voice; 5) a recognition module carries out similarity comparison on feature vector parameters of the input voice and models in the reference module base and outputs the input model with the highest similarity as a recognition candidate result; 6) a postprocessing module performs phonetic knowledge processing on the recognition candidate result in step 5) to obtain the final recognition result; and 7) the final recognition result is output through a voice output device. Compared with the prior art, the Shanghai dialect phonetic recognition information processing method has the advantages of being high in recognition speed and the like.

Description

technical field [0001] The invention relates to a speech recognition method, in particular to a Shanghai dialect speech recognition information processing method. Background technique [0002] In speech recognition, speaker recognition was the first to be carried out, which mainly focused on pure human ear recognition. The real speech recognition is to study the use of speech signal linear predictive coding technology and dynamic time warping technology, mainly for isolated characters. It is a technique of template matching. Since 1987, my country has only carried out research on speech recognition of Mandarin, and then for dialect accents, the development of dialect recognition is relatively lagging behind. Shanghai dialect is different from Mandarin in terms of phonological structure, prosodic features, and language grammar. It is not possible to simply use the method of identifying Mandarin to identify Shanghainese. Moreover, the recognition model of Mandarin uses the ...

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Problems solved by technology

It is not possible to simply use the method of identifying Mandarin to identify Shanghainese

Moreover, the recognition model of Mandarin uses the classic HMM, which will lead to the problem of high space-time complexity.

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