A technique for band limiting a multichannel surround sound, previously described, requires an optimization strategy based on subjective testing. In this technique, the 5 channels are transformed into a hierarchical domain where each transformed signal is assigned some percentage of the available bandwidth. Two cases with total bandwidth of 40 and 60 kHz were tested using a wide range of audio samples, and the resulting audio quality on a 100-point scale was rated at 87 and 93, respectively. This technique was superior to traditional bandwidth-limiting algorithms.

Authors: Jiao, Yu; Zielinski, Slawomir; Rumsey, Francis
Affiliation: Institute of Sound Recording, University of Surrey
JAES Volume 57 Issue 1/2 pp. 5-15; January 2009
Publication Date: March 6, 2009

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