Acoustic features based on auditory model and adaptive fractional Fourier transform for speech recognition |
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Authors: | YIN Hui XIE Xiang KUANG Jingming |
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Institution: | YIN Hui XIE Xiang~ KUANG Jingming (Department of Electronic Engineering,Beijing Institute of Technology Beijing 100081) |
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Abstract: | It is well known that auditory system of human beings has excellent performance which automatic speech recognition(ASR) systems can't match,and fractional Fourier transform (FrFT) has unique advantages in non-stationary signal processing.In this paper,the Gammatone filterbank is applied to speech signals for front-end temporal filtering,and then acoustic features of the output subband signals are extracted based on fractional Fourier transform. Considering the critical effect of transform order for FrFT,an ... |
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