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Priority to JP59107813ApriorityCriticalpatent/JPS60251610A/ja
Publication of JPS60251610ApublicationCriticalpatent/JPS60251610A/ja
Publication of JPH0374019B2publicationCriticalpatent/JPH0374019B2/ja
G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
G10L19/00—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
G10L19/04—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 using predictive techniques
G10L19/16—Vocoder architecture
G10L19/18—Vocoders using multiple modes
G10L19/24—Variable rate codecs, e.g. for generating different qualities using a scalable representation such as hierarchical encoding or layered encoding