subband encoding

An audio compression technique where the sound is split into frequency bands and then parts of the signal which the ear cannot detect are removed, e.g. a quiet sound masked by a loud one. The remaining signal is encoded using variable bit-rates with more bits per sample being used in the mid frequency range.

Subband encoding is used in MPEG-1.

Last updated: 1994-11-02

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Copyright Denis Howe 1985

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