using prototype waveform decomposition or prototype waveform interpolative [PWI] coders

Full Title

Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis (in musical instruments G10H) > using predictive techniques > Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters > using prototype waveform decomposition or prototype waveform interpolative [PWI] coders