AUDIO-ENCODING METHOD AND APPARATUS, AUDIO-DECODING METHOD AND APPARATUS, RECORDING MEDIUM THEREOF, AND MULTIMEDIA DEVICE EMPLOYING SAME

WIPO Patent Application WO/2012/165910

A2

According to the present invention, an audio-encoding method comprises the steps of: for an audio spectrum, acquiring an envelope on a predetermined sub-band basis; quantizing the envelope on said sub-band basis; and obtaining a difference value between quantized envelopes of an adjacent sub-band, and performing lossless encoding on the difference value of the current sub-band using, as a context, the difference value of the previous sub-band. According to the present invention, the number of bits used for encoding envelope information of an audio spectrum in a limited bit range may be reduced, thereby increasing the number of bits used for encoding actual spectrum components.

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POROV ANTON (RU)
OSIPOV KONSTANTIN (RU)
CHOO KI-HYUN (KR)

PCT/KR2012/004362

December 06, 2012

June 01, 2012

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SAMSUNG ELECTRONICS CO LTD (KR)
POROV ANTON (RU)
OSIPOV KONSTANTIN (RU)
CHOO KI-HYUN (KR)

G10L19/02

KR20060060928A	2006-06-07
US20100228541A1	2010-09-09
JP2000132193A	2000-05-12

See references of EP 2717264A4

Y.P.LEE, MOCK & PARTNERS (KR)
리앤목 특허법인 (KR)

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