Usefulness of Phase in Speech Processing
نویسنده
چکیده
It is a common belief in the speech community that the short-time phase spectrum plays very little (or, no) role in human perception tasks as well as in automatic speech recognition systems. In this paper, the usefulness of phase information is explored in human speech perception as well as in automatic speech recognition. Through human perception experiments, it is shown that the short-time phase spectrum (with window size of 32 ms) contributes to speech intelligibility as much as the corresponding power spectrum. A representation based on frequencies of the speech signal derived from its short-time phase is developed and is found to be as good as a cepstral representation (derived from power spectrum) for automatic speech recognition.
منابع مشابه
Advances in phase-aware signal processing in speech communication
During the past three decades, the issue of processing spectral phase has been largely neglected in speech applications. There is no doubt that the interest of speech processing community towards the use of phase information in a big spectrum of speech technologies, from automatic speech and speaker recognition to speech synthesis, from speech enhancement and source separation to speech coding,...
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