Patent ID: 9009036
Filing Date: 2015-04-14
Classification: G10L

Abstract:
1. A computer-implemented method of coding an audio signal using gain-shape vector quantization, comprising: organizing coefficients representing audio content into one or more bands; dividing each band into a gain and a shape; determining, in a processor-based device processing the audio content, a number of bits to use for the gain using an approximation method, wherein a size of a codebook dictates a total number of bits to allocate between the gain and the shape; subtracting, in the processor-based device, the number of bits allocated to the gain from the total number of bits to determine a number of bits to allocate to the shape; determining if the number of bits allocated to the shape is less than a defined maximum number of bits used in the codebook; and recursively dividing the band into substantially equal size partitions until the number of bits allocated to the shape in each partition is less than the defined number.