The purpose of this investigation is to quantify the loss of speech intelligibility related to communication between passengers inside a vehicle at different vehicle operating conditions and road surfaces using common objective speech intelligibility metrics. The goal was to identify the most appropriate metric, if a single one exists, for use in automotive applications. The objective metrics include the articulation index (AI), the speech intelligibility index (SII) and the speech transmission index (STI). The SII method, utilising user-defined, measured, speech signal was found to be the best out of the three metrics for quantifying in-vehicle speech intelligibility. Since the effect of reverberation on the loss of speech intelligibility was negligible, this method resulted in a close correlation with the more measurement-intensive STI method. This potentially provides a reduction in measurement effort while preserving the accuracy of the results.
In-vehicle application of common speech intelligibility metrics
Anwendung der allgemeinen Sprachverständlichkeitsmaßstäbe in Fahrzeuginnenräumen
International Journal of Vehicle Noise and Vibration ; 7 , 4 ; 328-346
2011
19 Seiten, 11 Bilder, 4 Tabellen, 22 Quellen
Aufsatz (Zeitschrift)
Englisch
In-vehicle application of common speech intelligibility metrics
Online Contents | 2011
|In-vehicle application of common speech intelligibility metrics
Kraftfahrwesen | 2011
|In-vehicle speech intelligibility for the hearing impaired using Speech Intelligibility Index
Kraftfahrwesen | 2011
|In-vehicle Speech Intelligibility for the Hearing Impaired Using Speech Intelligibility Index
SAE Technical Papers | 2011
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