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Convention Paper

On the Multichannel Sinusoidal Model for Coding Audio Object Signals

Authors: Hirvonen, Toni; Mouchtaris, Athanasios

AES Convention 130 · Paper 8419 · May 2011

Abstract

This paper presents two improvements on a recently proposed multichannel sinusoidal modeling system for coding multiple audio object signals. The system includes extracting the sinusoidal components and an LPC envelope for each object signal, as well as transform coding of the residuals' downmix. The contributions of this paper are: (a) a psychoacoustic model for enabling the system to scale well with multiple object signals, and (b) an improved method to encode the common residual, tailored to the "white" nature of this signal. As a result, sound quality of 90% on the MUSHRA scale is obtained for 10 simultaneous object signals coded with a total rate of 150 kbit/s, while retaining the individual object parametric representations.

Details

Published in
AES Convention 130
AES Convention
130
Paper number
8419
Publication date
May 6, 2011
Session subject
Audio Signal Processing and Analysis
Affiliation
FORTH ICS, Heraklion, Crete, Greece; Univerity of Crete, Heraklion Crete, Greece (See document for exact affiliation information.)
Type
Convention Paper