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Convention Paper

Restoration of Coarsely Quantized Audio Signals Using Markov Chain Monte Carlo Methods

Authors: Troughton, Paul T.; Godsill, Simon J.

AES Convention 107 · Paper 5055 · September 1999

Abstract

We present a statistical method for restoring audio signals which have been coarsely quantized without dither. The signal is modeled as a piecewise-stationary linear autoregressive process. Parameter and signal estimation are performed using sampling methods. To improve performance, sinusoidal components are incorporated into the model. Model order estimation and sinusoid selection are found to be crucial to the quality of the restoration.

Details

Published in
AES Convention 107
AES Convention
107
Paper number
5055
Publication date
September 6, 1999
Session subject
Digital Signal Processing
Affiliation
University of Cambridge, Cambridge, UK (See document for exact affiliation information.)
Type
Convention Paper