Hybrid perceptual audio coding

Details Hybrid perceptual audio coding Hybrid perceptual audio coding

G - Physics

10

K

354/47

G10K 15/02 (2006.01) H04B 1/66 (2006.01)

Patent

CA 2037780

A hybrid coding technique for high quality coding of audio signals, using a subband filtering technique further refined to achieve a large number ofsubbands. Noise masking thresholds for subbands are then determined using a new tonality measure applicable to individual frequency bands or single frequencies.Based on the thresholds so determined, input signals are coded to achieve high quality at reduced bit rates.

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