METHOD AND APPARATUS FOR ENCODING AND DECODING AUDIO SIGNAL USING COMPLEX POLAR QUANTIZER
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United States of America Patent
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May 9, 2024
app pub date -
Nov 6, 2023
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Nov 8, 2022
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Abstract
A complex number quantization-based audio signal encoding method may comprise: estimating a scale factor for each subband of an input audio signal; performing complex magnitude scaling for each subband based on the scale factor; and performing polar quantization on a complex frequency coefficient for each subband, wherein the performing the polar quantization for each subband comprises applying two or more different magnitude quantization techniques based on the magnitude of the complex frequency coefficient scaled for each subband.
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