A detailed study on the effects of noise on speech intelligibility

The Journal of the Acoustical Society of America
Finn Dubbelboer, T Houtgast

Abstract

A wavelet representation of speech was used to display the instantaneous amplitude and phase within 14 octave frequency bands, representing the envelope and the carrier within each band. Adding stationary noise alters the wavelet pattern, which can be understood as a combination of three simultaneously occurring subeffects: two effects on the wavelet levels (one systematic and one stochastic) and one effect on the wavelet phases. Specific types of signal processing were applied to speech, which allowed each effect to be either included or excluded. The impact of each effect (and of combinations) on speech intelligibility was measured with CVC's. It appeared that the systematic level effect (i.e., the increase of each speech wavelet intensity with the mean noise intensity) has the most degrading effect on speech intelligibility, which is in accordance with measures such as the modulation transfer function and the speech transmission index. However, also the introduction of stochastic level fluctuations and disturbance of the carrier phase seriously contribute to reduced intelligibility in noise. It is argued that these stochastic effects are responsible for the limited success of spectral subtraction as a means to improve speech...Continue Reading

References

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Citations

Nov 28, 2012·Journal of the Association for Research in Otolaryngology : JARO·D Timothy IvesChristian Lorenzi
Apr 17, 2012·The Journal of the Acoustical Society of America·Kamil K Wójcicki, Philipos C Loizou
Feb 12, 2009·The Journal of the Acoustical Society of America·Finn Dubbelboer, Tammo Houtgast
Feb 18, 2014·Journal of the Association for Research in Otolaryngology : JARO·Jong Ho WonJay T Rubinstein
Sep 8, 2011·The Journal of the Acoustical Society of America·Søren Jørgensen, Torsten Dau
Sep 8, 2011·The Journal of the Acoustical Society of America·Gibak Kim, Philipos C Loizou
Mar 25, 2010·The Journal of the Acoustical Society of America·Michiko KazamaTammo Houtgast
Nov 5, 2013·The Journal of the Acoustical Society of America·Karen L Payton, Mona Shrestha
Oct 26, 2010·The Journal of the Acoustical Society of America·Frédéric Apoux, Eric W Healy
Jun 9, 2014·The Journal of the Acoustical Society of America·Alexandre Chabot-LeclercTorsten Dau
Jun 6, 2014·Journal of the Association for Research in Otolaryngology : JARO·D Timothy IvesChristian Lorenzi
Mar 20, 2015·The Journal of the Acoustical Society of America·Søren JørgensenTorsten Dau
Aug 12, 2010·Journal of Speech, Language, and Hearing Research : JSLHR·Erin O'Brien Wilson, Tammie J Spaulding
Aug 3, 2011·Ecology Letters·Caitlin R Kight, John P Swaddle
Mar 20, 2018·Ear and Hearing·James M KatesLewis O Harvey
Nov 3, 2017·The Journal of the Acoustical Society of America·Léo VarnetChristian Lorenzi
Nov 2, 2019·The Journal of the Acoustical Society of America·Laurianne CabreraChristian Lorenzi

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