“School of Cognitive Sciences”
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| Paper IPM / Cognitive Sciences / 11144 |
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The auditory periphery system recieves a one dimensional acoustical signal that describe how the local pressure varies with time. However, this one dimentional signal information is then somehow unfolded into a two dimentional time-frequency plane that tells us when which frequency occurs. Therefore, hearing process is thus based on some compromise between time localization and frequency localization and a kind of time-frequency or wavelet type transformation is done in auditory signal processing. In this study the similarities between auditory transform based on auditory physiological process and wavelet transform is introduced. Specially band pass filter bank property and variable time and frequency resolution with the signal frequency are considered.
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