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Convention Paper

Measurement of Active Speech Level Inside Cars using Throat-activated Microphone

Authors: Bozzoli, Fabio; Angelo, Farina

AES Convention 116 · Paper 6004 · May 2004

Abstract

One of the most used intelligibility?s parameters is Speech Transmission Index : the techniques for determining it employ an artificial speaker and listener. When signal to noise ratio is particularly low, for example inside cars, the value of STI is mainly influenced by this ratio and measuring the emission level of real speakers is the only way for driving correctly the artificial mouth. We have implemented a technique that is based on a throat-activated microphone and it is able to find the effective level of a real speaker?s voice inside a noisy space in realistic conditions. We have studied especially the speech level inside cars and we have discovered how the value defined by IEC/ITU standards may be extremely different from real one. In this way, we were able to produce test signals at a more appropriate emission level

Details

Published in
AES Convention 116
AES Convention
116
Paper number
6004
Publication date
May 6, 2004
Session subject
Automotive Audio; Instrumentation and Measurement
Affiliation
Industrial Eng. Dept., Università di Parma, Parma, Italy (See document for exact affiliation information.)
Type
Convention Paper