AUDIO ENCODING APPARATUS, DECODING APPARATUS, METHOD, CIRCUIT AND PROGRAM

AUDIO ENCODING APPARATUS, DECODING APPARATUS, METHOD, CIRCUIT AND PROGRAM

Provided is an encoding device (1) including: a pitch contour analysis unit (101) which detects information, a dynamic time-warping unit (102) which generates, based on the information, pitch change ratios (Tw_ratio in Fig. 18 ) within a range (86) including a range (86a) of the pitch change ratios...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: ZHOU, Huan, NORIMATSU, Takeshi, ZHONG, Haishan, ISHIKAWA, Tomokazu, CHONG, Kok Seng
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
ACOUSTICS
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:Provided is an encoding device (1) including: a pitch contour analysis unit (101) which detects information, a dynamic time-warping unit (102) which generates, based on the information, pitch change ratios (Tw_ratio in Fig. 18 ) within a range (86) including a range (86a) of the pitch change ratios corresponding to absolute pitch differences of 42 cents or larger; a first lossless coding unit (103) which codes the generated pitch parameters (102x); a time-warping unit (104) which shifts a pitch of a signal according to the information; and a second encoding unit which codes a signal (104x) obtained by the shifting.