Method and apparatus of suppressing vocoder noise

An apparatus for suppressing vocoder noise, the apparatus comprising:

• a channel decoder configured to output first information and second information, the first information indicating whether a decoded data frame has an error and the second information being a channel quality metric;
• a pre-processor configured to change the first information to indicate generation of a channel decoding error if the first information indicates that no channel decoding error has been generated and the second information is smaller than a predetermined first threshold;
• and
• a voice decoder configured to perform error concealment voice decoding on the decoded data frame if the first information received from the pre-processor indicates that a channel decoding error has been generated and to perform normal voice decoding on the decoded data frame if the first information received from the pre-processor indicates that no channel decoding error has been generated.