METHOD FOR CODING AUDIO SIGNAL DIGITIZED AT LOW SAMPLING FREQUENCY Russian patent published in 1999 - IPC

FIELD: audio signal coding procedure. SUBSTANCE: method involves encoding several adjacent frequency lines of digitized audio signal corresponding to scaling factor range each time with same scaling factor; adjacent scaling-factor ranges form regions within which all scaling factors are encoded each time with equal number of bits determined by highest scaling factor of region. Frequency lines of at least uppermost region are encoded with scaling factor 0. Scaling factor for at least uppermost region is not encoded. Decoding is to be effected by standard decoders distinguished by low adaptive loss. EFFECT: facilitated procedure enabling reading of sampling frequency other than standard at negligible deviation from standard. 5 cl