Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters

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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

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• G10L 19/083 the excitation function being an excitation gain (G10L25/90 takes precedence)
• G10L 19/087 using mixed excitation models, e.g. MELP, MBE, split band LPC or HVXC
• G10L 19/09 Long term prediction, i.e. removing periodical redundancies, e.g. by using adaptive codebook or pitch predictor
• G10L 19/093 using sinusoidal excitation models
• G10L 19/097 using prototype waveform decomposition or prototype waveform interpolative [PWI] coders
• G10L 19/10 the excitation function being a multipulse excitation
• G10L 19/12 the excitation function being a code excitation, e.g. in code excited linear prediction [CELP] vocoders