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- W2576958176 abstract "Development of an automatic speech recognition (ASR) system for low-resourced languages is an important research topic in ASR. This paper reports on the development of a speech-to-text (STT) system targeting broadcast news and broadcast conversation transcription for the low-resourced Slovak language. Context-dependent acoustic models are trained without any manually transcribed audio data via cross-language transfer and unsupervised training. In addition, a pronunciation dictionary for Slovak language is created using efficient rule-based pronunciation modeling. For language modeling, large N-gram language models were estimated on 63M words of texts downloaded from the Internet. The system uses MLP (multilayer perceptron) features imported from English which are concatenated with cepstral PLP (perceptual linear prediction) and F0 (pitch) features. These techniques were applied to develop a Slovak STT system with performance similar to that obtained by state-of-the-art systems for other languages. Furthermore, we propose to reduce the dimension of the MLP+PLP+F0 features from 81 to 50, using principal component analysis (PCA), in order to reduce the redundancy between the MLP and the PLP+F0 features. This feature reduction makes it possible to reduce the word error rate (WER) and the recognition time while reducing the CMLLR adaptation time by a factor of 3." @default.
- W2576958176 created "2017-01-26" @default.
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- W2576958176 date "2014-05-01" @default.
- W2576958176 modified "2023-10-17" @default.
- W2576958176 title "Speech-to-Text Development for Slovak, a Low-Resourced Language" @default.
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