Fluctuation Strength

  • Eberhard Zwicker
  • Hugo Fastl
Part of the Springer Series in Information Sciences book series (SSINF, volume 22)


In this chapter, the fluctuation strength of amplitude-modulated broad-band noise, amplitude-modulated pure tones and frequency-modulated pure tones is addressed, and the dependence of fluctuation strength on modulation frequency, sound pressure level, modulation depth, centre frequency, and frequency deviation is assessed. In addition, the fluctuation strength of modulated sounds is compared to the fluctuation strength of narrow-band noises. Finally, a model of fluctuation strength based on the temporal variation of the masking pattern or loudness pattern is proposed.


Modulation Frequency Sound Pressure Level Pure Tone Modulation Depth Temporal Envelope 
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Copyright information

© Springer-Verlag Berlin Heidelberg 1999

Authors and Affiliations

  • Eberhard Zwicker
    • 1
  • Hugo Fastl
    • 2
  1. 1.Institut für ElektroakustikTechnische Universität MünchenGermany
  2. 2.Lehrstuhl für Mensch-Maschine-KommunikationTechnische Universität MünchenMünchenGermany

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