HYBRID AUDIO SIGNAL ENCODER, HYBRID AUDIO SIGNAL DECODER, METHOD FOR ENCODING AUDIO SIGNAL, AND METHOD FOR DECODING AUDIO SIGNAL

A sound signal hybrid encoder (100) includes: a signal analysis unit (404) which determines a scheme for encoding a frame included in a sound signal; an LFD encoder (406, 410) which encodes a frame to generate an LFD frame; an LP encoder (408) which encodes a frame to generate an LP frame; a switchi...

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Bibliographische Detailangaben
Hauptverfasser:	NORIMATSU, Takeshi, CHONG, Kok Seng
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ACOUSTICS BASIC ELECTRONIC CIRCUITRY CODE CONVERSION IN GENERAL CODING DECODING ELECTRICITY MUSICAL INSTRUMENTS PHYSICS SPEECH ANALYSIS OR SYNTHESIS SPEECH OR AUDIO CODING OR DECODING SPEECH OR VOICE PROCESSING SPEECH RECOGNITION
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Beschreibung
Zusammenfassung:	A sound signal hybrid encoder (100) includes: a signal analysis unit (404) which determines a scheme for encoding a frame included in a sound signal; an LFD encoder (406, 410) which encodes a frame to generate an LFD frame; an LP encoder (408) which encodes a frame to generate an LP frame; a switching unit (405) which switches between the encoders according to a result of the determination by the signal analysis unit (404); and an AC signal generation unit (413) which generates an AC signal according to a scheme selected from among schemes, outputs the generated AC signal, and also outputs an AC flag indicating the selected scheme.