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Restructured Audio Encoder for Improved Computational Efficiency

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In an audio encoder, such as AAC, the input PCM samples are sent in parallel to an MDCT and a psychoacoustic model that performs again time-to-frequency decomposition with a FFT. To avoid this redundancy, the encoder was restructured to take the output of the MDCT as the input of the psychoacoustic model. Preliminary tests showed that this idea is feasible.: Preprint

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AES - Audio Engineering Society