Characterizing Speech Intelligibility in Noise After Wide Dynamic Range Compression
| Autor: | Wouter A. Dreschler, Koenraad S. Rhebergen, Thijs H. Maalderink |
|---|---|
| Přispěvatelé: | Other departments, APH - Aging & Later Life, APH - Health Behaviors & Chronic Diseases, Ear, Nose and Throat |
| Rok vydání: | 2017 |
| Předmět: |
Adult
Male Speech reception thresholds Psychometrics Computer science Speech recognition Nonlinear signal processing Signal-To-Noise Ratio Intelligibility (communication) 01 natural sciences Young Adult 03 medical and health sciences Speech and Hearing Hearing Aids 0302 clinical medicine Psychometric function 0103 physical sciences Wide dynamic range Humans Speech reception Hearing Loss 030223 otorhinolaryngology 010301 acoustics Speech Reception Threshold Test Local linear Speech intelligibility in noise Speech Intelligibility Outcome measures Signal Processing Computer-Assisted Healthy Volunteers Otorhinolaryngology Wide dynamic range compression Speech Perception Female Noise Stationary noise |
| Zdroj: | Ear and hearing, 38(2), 194-204. Lippincott Williams and Wilkins Ear and Hearing, 38(2), 194. Lippincott Williams and Wilkins |
| ISSN: | 0196-0202 |
| DOI: | 10.1097/aud.0000000000000369 |
| Popis: | Objectives: The effects of nonlinear signal processing on speech intelligibility in noise are difficult to evaluate. Often, the effects are examined by comparing speech intelligibility scores with and without processing measured at fixed signal to noise ratios (SNRs) or by comparing the adaptive measured speech reception thresholds corresponding to 50% intelligibility (SRT50) with and without processing. These outcome measures might not be optimal. Measuring at fixed SNRs can be affected by ceiling or floor effects, because the range of relevant SNRs is not know in advance. The SRT50 is less time consuming, has a fixed performance level (i.e., 50% correct), but the SRT50 could give a limited view, because we hypothesize that the effect of most nonlinear signal processing algorithms at the SRT50 cannot be generalized to other points of the psychometric function. Design: In this article, we tested the value of estimating the entire psychometric function. We studied the effect of wide dynamic range compression (WDRC) on speech intelligibility in stationary, and interrupted speech-shaped noise in normal-hearing subjects, using a fast method-based local linear fitting approach and by two adaptive procedures. Results: The measured performance differences for conditions with and without WDRC for the psychometric functions in stationary noise and interrupted speech-shaped noise show that the effects of WDRC on speech intelligibility are SNR dependent. Conclusions: We conclude that favorable and unfavorable effects of WDRC on speech intelligibility can be missed if the results are presented in terms of SRT50 values only. |
| Databáze: | OpenAIRE |
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