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The common approach to the speech recognition problem is the use of phonemes as basic parts of speech. The authors proposed allophones usage instead. For rarer allophones the conversion into other allophones (4 selection methods) has been proposed. Based on the obtained results one can say that effective use of the additional information from allophonic notation will not be possible without modification...
In this paper a new approach is proposed for the socalled voice activity detection (VAD) and word endpoint detection (EPD) both under assumption that the analyzed speech signal is recorded in the presence of noise. The described VAD and ERP methods contain a special stage of the wavelet subband denoising. We present effectiveness of the algorithm with this stage of processing for automatic recognition...
This paper describes a method for speech feature extraction using morphological signal processing based on the so-called "slope transformation". The proposed approach has been used to extract the signal upper spectral envelope. Results of experiments of the automatic speech recognition (ASR), which were undertaken to check the performance of the presented method, have shown some evident...
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