Audio Coding Using a Psychoacoustic Pre- and Post-Filter
Edler B, Schuller G (2000)
Publication Type: Conference contribution
Publication year: 2000
Publisher: IEEE
City/Town: Istanbul, Turkey
Conference Proceedings Title: Int. Conf. on Acoustics, Speech, and Signal Processing
ISBN: 0-7803-6293-4
DOI: 10.1109/ICASSP.2000.859101
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.
Authors with CRIS profile
Involved external institutions
Germany (DE)How to cite
APA:
Edler, B., & Schuller, G. (2000). Audio Coding Using a Psychoacoustic Pre- and Post-Filter. In Int. Conf. on Acoustics, Speech, and Signal Processing. Istanbul, Turkey: IEEE.
MLA:
Edler, Bernd, and Gerald Schuller. "Audio Coding Using a Psychoacoustic Pre- and Post-Filter." Proceedings of the Int. Conf. on Acoustics, Speech, and Signal Processing Istanbul, Turkey: IEEE, 2000.
BibTeX: Download