It is well-known that in sophisticated signals the nature of perceptually relevant features changes considerably. For certain parts of the signal, it is useful to characterize features in terms of spectral properties. For other parts a spectral description is rather poorly , just because the leading cue is a specific temporal structure. If the signal is of long duration, just as happens in speech and music, it is self-evident to use a filter bank and to code the output conform perceptually relevant cues. However, the human auditory system includes a highly specialized filter bank. For, the basilar membrane actually works as a system of coupled filters. Consequently, it is natural to apply this kind of systems in the science of speech and music. In this work we describe a filter bank which simulates basilar membrane behaviour. Because the system is a real time realization of what happens at the level of the basilar membrane, both spectral and temporal properties are found. Some preliminary results are given. Keywords: Filter bank; Dynamical system; Spectro-temporal codes
Bibliographic reference. Dijk, J. S. C. van (1991): "Notes on auditive coding of sophisticated signals", In EUROSPEECH-1991, 1433-1436.