EP1530201A3

Method and apparatus for selecting an encoding rate in a variable rate vocoder

Abstract

An apparatus for selecting an encoding rate for an input signal (S(n)), comprising: an audio signal detection device for determining whether an audio signal is present in each frequency subband of the input signal (S(n)); and an encoding rate selection device for selecting the encoding rate for the input signal (S(n)) in accordance with the determination as to whether an audio signal is present in each frequency subband of the input signal (S(n)).

Term

Term ended

Projected expiry passed 1 August 2015, 11.1 years ago.

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Every citation, both ways

Citations
DocumentRelationOfficeCategoryCited duringRelevant claims
EP0167364A1CitesEuropean Patent Office (EPO)XSearch report1,3,7,10,12,16,17,19,21,25,28-35
EP0190796A1CitesEuropean Patent Office (EPO)ASearch report1-35
US5054075ACitesUnited States of AmericaASearch report1-35