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Convention Paper

Phase Transmission in Sinusoidal Audio and Speech Coding

Authors: den Brinker, Albertus C.; Gerrits, Andy J.; Sluijter, Rob J.

AES Convention 115 · Paper 5983 · October 2003

Abstract

In sinusoidal coding, frequency tracks are formed in the encoder and the amplitude and frequency information of a track is transmitted. Phase is usually not transmitted, but reconstructed at the decoder by assuming that the phase is the integral of the frequency. Such a reconstructed phase accumulates inaccuracies, leading to audible artifacts. To prevent this, a mechanism is proposed to transmit phase information of sinusoidal tracks. The unwrapped phase is quantised and transmitted. The frequencies are not transmitted, but restored from the phase information by differentiation.

Details

Published in
AES Convention 115
AES Convention
115
Paper number
5983
Publication date
October 6, 2003
Session subject
Psychoacoustics; Audio Coding
Affiliation
Philips Research Laboratories, Prof. Holstlaan 4 (WY82), Eindhoven, The Netherlands (See document for exact affiliation information.)
Type
Convention Paper