Nonlinear Operators for Speech Analysis
نویسنده
چکیده
Since the auditory system does not resolve the higher frequency components, the temporal features of vowel-like sounds are comparable and hence coded similarly as those of amplitude-modulated tones. Research work on automatic demodulation of speech can be motivated because of the hypothesis proposing that the human brain has neural cells specialized in Amplitude Modulation (AM) and Frequency Modulation (FM) detection (Gardner et al. 1979) (Tansley et al. l983) (Wakefield et al. 1984). More recently (Schreiner and Langner, 1988) have studied the representation of amplitude modulation in the inferior colliculus of the cat and have shown that the inferior colliculus of the cat contains a highly systematic topographic representation of amplitude modulation paremeters.
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