ISCA Archive Interspeech 2005
ISCA Archive Interspeech 2005

Amplitude modulation of frication noise by voicing saturates

Jonathan Pincas, Philip J. B. Jackson

The two distinct sound sources comprising voiced frication, voicing and frication, interact. One effect is that the periodic source at the glottis modulates the amplitude of the frication source originating in the vocal tract above the constriction. Voicing strength and modulation depth for frication noise were measured for sustained English voiced fricatives using high-pass filtering, spectral analysis in the modulation (envelope) domain, and a variable pitch compensation procedure. Results show a positive relationship between strength of the glottal source and modulation depth at voicing strengths below 66 dB SPL, at which point the modulation index was approximately 0.5 and saturation occurred. The alveolar [z] was found to be more modulated than other fricatives.

doi: 10.21437/Interspeech.2005-181

Cite as: Pincas, J., Jackson, P.J.B. (2005) Amplitude modulation of frication noise by voicing saturates. Proc. Interspeech 2005, 349-352, doi: 10.21437/Interspeech.2005-181

  author={Jonathan Pincas and Philip J. B. Jackson},
  title={{Amplitude modulation of frication noise by voicing saturates}},
  booktitle={Proc. Interspeech 2005},