The subjective effects of controlled limitation of audio bandwidth on the assessment of audio quality were studied. The investigation was focused on the standard 5.1 multichannel audio setup and limited to the optimum listening position. The effect of video presence on the audio quality assessment was also investigated. The results of formal subjective tests indicate that it is possible to limit the bandwidth of the center or the rear channels without significant deterioration of the audio quality for most program material types investigated. Video presence had a small effect on the audio quality assessment.
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https://aes2.org/publications/elibrary-page/?id=12222
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