VIRTUAL SOURCE LOCATION INFORMATION BASED CHANNEL LEVEL DIFFERENCE QUANTIZATION AND DEQUANTIZATION METHOD

A method for quantizing and inverse-quantizing a channel level difference based on virtual source location information is provided to minimize aural deterioration in SAC(Spatial Audio Coding) and improve sound quality without increasing complexity. A channel level difference parameter used as a spat...

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Main Authors KIM, KWANG KI, HAHN, MIN SOO, SEO, JEONG IL, BEACK, SEUNG KWON, KANG, KYEONG OK, CHON, SANG BAE, HONG, JIN WOO, SUNG, KOENG MO
Format Patent
LanguageEnglish
Published 24.01.2007
Subjects
ACOUSTICS
BASIC ELECTRONIC CIRCUITRY
CODE CONVERSION IN GENERAL
CODING
DECODING
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
INFORMATION STORAGE
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER
MUSICAL INSTRUMENTS
PHYSICS
SPEECH ANALYSIS OR SYNTHESIS
SPEECH OR AUDIO CODING OR DECODING
SPEECH OR VOICE PROCESSING
SPEECH RECOGNITION
STEREOPHONIC SYSTEMS
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Summary:A method for quantizing and inverse-quantizing a channel level difference based on virtual source location information is provided to minimize aural deterioration in SAC(Spatial Audio Coding) and improve sound quality without increasing complexity. A channel level difference parameter used as a spatial parameter is quantized when a multi-channel audio signal is spatial-audio-coded. Sub-band channel level differences are extracted from the multi-channel audio signal. The channel level difference is quantized with reference to channel level difference quantization table designed by using a channel level difference quantization value derived from a virtual source location information quantization value of the multi-channel audio signal.
Bibliography:Application Number: KR20060066822