CUED Publications database

Frequency-based interpolation of sampled signals with applications in audio restoration

Godsill, SJ and Rayner, PJW (1993) Frequency-based interpolation of sampled signals with applications in audio restoration. Proceedings - ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing, 1. I-209-I-212. ISSN 0736-7791

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Abstract

A new interpolation technique has been developed for replacing missing samples in a sampled waveform drawn from a stationary stochastic process, given the power spectrum for the process. The method works with a finite block of data and is based on the assumption that components of the block DFT are Gaussian zero-mean independent random variables with variance proportional to the power spectrum at each frequency value. These assumptions make the interpolator particularly suitable for signals with a sharply-defined harmonic structure, such as audio waveforms recorded from music or voiced speech. Some results are presented and comparisons are made with existing techniques.

Item Type: Article
Subjects: UNSPECIFIED
Divisions: Div F > Signal Processing and Communications
Depositing User: Cron Job
Date Deposited: 07 Mar 2014 12:36
Last Modified: 29 Nov 2014 19:03
DOI: