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

摘要

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)).