A system and method for converting a chinese dialect phonetic transcription into international phonetic alphabet transcription

Abstract

The application discloses a Chinese dialect phonetic international phonetic alphabet transcription method and system. The application comprises: 1. A pre-trained self-supervised acoustic model is used as a feature extractor to convert the input dialect audio into implicit speech representation; 2. A configurable IPA syllable list of dialects is constructed: a configuration mechanism of the IPA syllable list required by the target dialect is provided according to the requirement; 3. The acoustic model is retrained through a small sample fine-tuning mechanism: the dialect corpus within a specified time is labeled, and the labeled target dialect corpus is used to continue training part of the parameters of the acoustic model to complete fine-tuning adaptation, so that the model can better capture the acoustic characteristics of the target dialect; 4. The frame-by-frame syllable output by the small sample fine-tuned acoustic model is mapped into the final IPA syllable sequence by using an IPA decoding module. The application can realize accurate transcription of dialect phonetics under a small amount of labeled corpus, and solve the technical problem of standardized phonetic transcription caused by the lack of large-scale training data of Chinese dialects.

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