A two-channel approach to the removal of impulsive noise from archived recordings

Author

Hicks, Christopher M. ; Godsill, Simon J.

Author_Institution

Dept. of Eng., Cambridge Univ., UK

fYear

1994

fDate

19-22 Apr 1994

Abstract

We discuss the extraction of two signals from a monophonic gramophone record, and observe that the impulsive noise is significantly different in the two. This, coupled with the redundancy of the desired parts of the signals, has great advantages in the processes of impulsive noise detection and removal. It is simple to obtain two suitable signals by using a stereo replay cartridge, and we develop detection and interpolation algorithms that use such a pair of signals. We present the results of computer simulations and informal listening tests on archive material. In both cases the two-channel method is found to be an improvement over a similar single-channel algorithm, with little change in computational cost

Keywords

Hi-Fi equipment; acoustic signal detection; acoustic signal processing; audio equipment; audio recording; autoregressive processes; interpolation; noise abatement; archived recordings; computer simulations; detection algorithms; impulsive noise detection; impulsive noise removal; informal listening tests; interpolation algorithms; monophonic gramophone record; redundancy; signal extraction; stereo replay cartridge; two-channel method; Change detection algorithms; Computer hacking; Computer simulation; Interpolation; Laboratories; Materials testing; Noise level; Parameter estimation; Signal processing; Signal processing algorithms;

fLanguage

English

Publisher

ieee

Conference_Titel

Acoustics, Speech, and Signal Processing, 1994. ICASSP-94., 1994 IEEE International Conference on

Conference_Location

Adelaide, SA

ISSN

1520-6149

Print_ISBN

0-7803-1775-0

Type

conf

DOI

10.1109/ICASSP.1994.389681

Filename

389681