Title :
Critical band analysis-synthesis
Author :
Petersen, Tracy L. ; Boll, Steven F.
Author_Institution :
New York Institute of Technology, Old Westbury, NY
fDate :
6/1/1983 12:00:00 AM
Abstract :
The formal derivation of a transformation which models the frequency selective properties (critical bandwidths) of the auditory system is developed. A parameterized family of constant-Q analysis-synthesis transform pairs is developed from a property of homogeneous functions. This formulation allows for a wide choice of selections for center frequencies, bandwidths, and filter shapes. A particular member of the transform family is implemented to model the frequency selective properties of the peripheral auditory system. With this transform, short-time spectral analysis using critical band filter shapes can be implemented. In the absence of spectral modification, the analysis-synthesis transform can be made arbitrarily close to an identity system. This new approach to analysis-synthesis provides the necessary mathematical support needed to design and optimize both constant-Q and critical band analysis-synthesis transforms.
Keywords :
Auditory system; Bandwidth; Filters; Frequency; Laboratories; Mathematical model; Shape; Signal processing; Spectral analysis; Speech processing;
Journal_Title :
Acoustics, Speech and Signal Processing, IEEE Transactions on
DOI :
10.1109/TASSP.1983.1164127