Coding of a speech or music signal with quantization of harmonics components specifically and then residue components

Abstract From the Canadian patent

Harmonics coefficients are estimated in primary coefficients of an orthogonal transform of a speech input signal or a music input signal by using a pitch frequency extracted from the input signal and are quantized into a harmonics code vector. Residue coefficients are calculated by removing the harmonics coefficients from the primary coefficients and quantized into residue code vectors.and gain code vectors. It is possible to search harmonics excitation pulses at the harmonics locations for harmonics quantization into the harmonics code vector. On the other hand it is, possible to estimate the harmonics coefficients or excitation pulses by using quantized LSP parameters and to calculate …