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

Full Title

Speech or audio signal 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 > using predictive techniques > Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters

Classification Context

Section:

PHYSICS

Class:

MUSICAL INSTRUMENTS; ACOUSTICS

Subclass:

SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING

Child Classifications

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• G10L 19/083 the excitation function being an excitation gain
• 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 19/1 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