There are several different audio frequency scales in common use, each having its own particular merits. The speech-based frequency scale derived here, from vowel formant frequency difference limens, has a markedly different shape from the others and attaches more relative weight to the range of frequencies associated with vowel perception, making it potentially well suited to speech analysis applications.

Author: Brookes, Tim
Affiliation: University of Surrey, Guildford, UK
AES Convention: 110 (May 2001) Paper Number: 5329
Publication Date: May 1, 2001
Subject: Analysis and Synthesis of Sound

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