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Application of Sinusoidal Coding for Enhanced Bandwidth Extension in MPEG-H USAC

A new audio coding technique applicable to very low bit rates is proposed. The existing MPEG-D standard of Unified Speech and Audio Coding (USAC) is enhanced by a new High Frequency Sinusoidal Coder (HFSC), employed for improving the subjective quality of high frequency spectral content. The paper gives an overview of the new technique as well as it offers some insight into the operation modes and delay issues. A statistically evidenced significant improvement of the audio quality resulting from applying this technique is demonstrated.

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AES - Audio Engineering Society