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fluctuation strength

Temporal fluctuations of sound are determined by the fluctuation strength. These are fluctuations in loudness. The vacil was defined as the unit for the fluctuation strength. By definition, the fluctuation strength of a vacil corresponds to the fluctuation of a 1 kHz tone at a sound pressure of 60 dB, with a modulation frequency of 4 Hz and a modulation depth of 100 %.

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Englisch: fluctuation strength
Updated at: 19.05.2004
#Words: 58
Links: sound, loudness, unit (U), kilohertz (kHz), pressure
Translations: DE
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