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Exploiting Excess Masking for Audio Compression

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In order to improve audio coding performance, excess masking has been employed for the compression of complex audio signals. A new algorithm has been developed to classify and preprocess maskers. A psychoacoustic model is used to estimate simultaneous masking threshold. This masking threshold is used for quantizing audio signal coefficients in the frequency domain. Preliminary test results show improved coding efficiency.

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AES - Audio Engineering Society