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In this paper, a filter used for speech enhancement in speech recognition systems is presented. The filter is based on the Mel-warped Wiener filter and model-based compensation for additive noise. The filter coefficients are designed in Mel-spectral energy domain and then transformed to impulse response in time-domain using Mel-warped inverse discrete cosine transform (Mel-IDCT). The enhanced speech...
In this paper, a filter used for speech enhancement in speech recognition systems is presented. The filter is based on the Mel-warped Wiener filter and model-based compensation for additive noise. The filter coefficients are designed in Mel-spectral energy domain and then transformed to impulse response in time-domain using Mel-warped inverse discrete cosine transform (Mel-IDCT). The enhanced speech...
High quality time scale modification of signals is important in many applications. The difficulty is to achieve the necessary time scale modification yet maintaining the pitch information presented in the input signal. We presented a new, computationally efficient algorithm called SOLA (synchronized overlap and add) based on zero-crossing point. It is a time domain algorithm. The algorithm can provide...
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