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Advisor(s)
Abstract(s)
Crest factor is an often overlooked part of audio production, yet it acts as an important limit to overall
loudness. We propose a technique to optimize relative polarities in order to yield the lowest possible peak
value. We suggest this is a way of addressing loudness maximization that is more sonically transparent
than peak limiting or compression. We also explore additional uses that polarity analysis may have in the
context of mixing audio. Results show this is a fairly e ective strategy, with average crest factor reductions
of 3 dB, resulting in equivalent values for loudness enhancement. While still not comparable to the amount
of reduction peak limiters are typically used for, the approach is seen as more transparent via subjective
evaluation, through a multi-stimulus test.
Description
Keywords
Citation
PESTANA, Pedro Duarte ; REISS, Joshua D. ; BARBOSA, Álvaro - Cross-adaptive polarity switching strategies for optimization of audio mixes. In AES 138rd Convention, Warsaw, Poland, 7–10 May 2015. Proceedings. New York: Audio Engineering Society, 2015. I SBN 978-1-5108-0659-7. Vol. 1, p. 154-164