Paper Info
Title
Audio coding using a psychoacoustic pre- and post-filter
Abstract
A novel concept for perceptual audio coding is presented which is based on the combination of a pre- and post-filter, controlled by a psychoacoustic model, with a transform coding scheme. This paradigm allows modeling of the temporal and spectral shape of the masked threshold with a resolution independent of the used transform. By using frequency warping techniques the maximum possible detail for a given filter order can be made frequency-dependent and thus better adapted to the human auditory system. The filter coefficients are represented efficiently by LSF parameters which can be adaptively interpolated over time. First experiments with a system obtained by extending an existing transform codec showed that this approach can significantly improve the performance for speech signals, while the performance for other signals remained the same.
Year
DOI
Venue
2000
10.1109/ICASSP.2000.859101
ICASSP
Keywords
Field
DocType
psychoacoustic pre,coding scheme,human auditory system,filter order,spectral shape,lsf parameter,filter coefficient,psychoacoustic model,maximum possible detail,novel concept,perceptual audio coding,filter coefficients,transform coding,psychology,codecs,interpolation,resolution,performance,frequency,adaptive filters,modeling,speech coding
Image warping,Speech coding,Pattern recognition,Computer science,Transform coding,Coding (social sciences),Speech recognition,Artificial intelligence,Sub-band coding,Adaptive filter,Codec,Filter design
Conference
ISSN
ISBN
Citations 
1520-6149
0-7803-6293-4
18
PageRank 
References 
Authors
3.19
2
2
Name
Order
Citations
PageRank
B Edler1469.21
G. Schuller2325.32