Backward adaptive warped lattice for wideband stereo coding

Aki Härmä, Unto K. Laine, Matti Karjalainen

Research output: Contribution to journalConference article in journalAcademicpeer-review

Abstract

In this paper an extremely low delay perceptual audio codec is presented. The codec is based on warped linear prediction which inherently utilizes auditory frequency resolution and frequency masking characteristics of hearing. In the current version of the codec the coding delay is the minimum. This is achieved using backward adaptive lattice methods where waveform modeling is completely based on already transmitted data. Coding technique is applied separately to the two channels but the quantization processes are unified to gain more bit rate reduction.

Original languageEnglish
JournalEuropean Signal Processing Conference
Volume1998-January
Publication statusPublished - 1998
Externally publishedYes
Event9th European Signal Processing Conference - Island of Rhodes, Greece
Duration: 8 Sept 199811 Sept 1998
Conference number: 9

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