Title :
A functional model of the early auditory system
Author :
Wang, Kuansan ; Shamma, Shihab A.
Author_Institution :
Dept. of Electr. Eng., Maryland Univ., College Park, MD, USA
Abstract :
An analytical tractable model of the early auditory system is proposed based on the wavelet representation and lateral inhibitory networks (LINs). From a theoretical point of view, LIN processing can be interpreted as a sampling process that preserves information only at the extrema, or equivalently, the zero crossings of the first derivative of the cochlear filter outputs. For each channel, the zero crossings are shown to be dominated by the strongest component of the model response. The spectral contents that are unable to dominate any channel are attenuated in the model representations. This effect is associated with auditory suppression, and compared with psychoacoustic findings
Keywords :
acoustic signal processing; hearing; acoustic signal processing; analytical tractable model; auditory suppression; channel; cochlear filter outputs; early auditory system; functional model; lateral inhibitory networks; model representations; model response; psychoacoustics; sampling process; spectral contents; wavelet representation; zero crossings; Auditory system; Band pass filters; Biological system modeling; Biomembranes; Brain modeling; Couplings; Ear; Hair; Narrowband; Wavelet transforms;
Conference_Titel :
Time-Frequency and Time-Scale Analysis, 1992., Proceedings of the IEEE-SP International Symposium
Conference_Location :
Victoria, BC
Print_ISBN :
0-7803-0805-0
DOI :
10.1109/TFTSA.1992.274237
