By Topic

The voice activity detector for the Pan-European digital cellular mobile telephone service

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$33 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

4 Author(s)
D. K. Freeman ; British Telecom Res. Lab., Ipswich, UK ; G. Cosier ; C. B. Southcott ; I. Boyd

A description is given of the voice activity detector (VAD) standardized by CEPT for use in the Pan-European digital cellular mobile telephone service. The speech-coding algorithm chosen is a 13-kb/s speech coder, using a technique in which speech is produced at the decoder by passing a substitute for the residual through long-term and short-term predictor filters. The difficulties of detecting speech in a noisy environment are discussed, and the performance tests carried out to validate the design are described. The tests show that clipping levels are very low but that low levels of speech activity are recorded in conversations. The VAD has low complexity (because it uses the results of analysis performed in the speech coder) and is failsafe in difficult conditions

Published in:

Acoustics, Speech, and Signal Processing, 1989. ICASSP-89., 1989 International Conference on

Date of Conference:

23-26 May 1989