Numéro
J. Phys. IV France
Volume 02, Numéro C1, Avril 1992
Deuxième Congrès Français d'Acoustique / Second French Conference on Acoustics
Page(s) C1-331 - C1-334
DOI http://dx.doi.org/10.1051/jp4:1992171
Deuxième Congrès Français d'Acoustique / Second French Conference on Acoustics

J. Phys. IV France 02 (1992) C1-331-C1-334

DOI: 10.1051/jp4:1992171

AMÉLIORATION DE L'INTELLIGIBILITÉ DANS DES LOCAUX ACOUSTIQUEMENT DÉFAVORABLES PAR COMPRESSION/EXPANSION

J. MAISANO, M. ROSSI and T. STYGER

Laboratoire d'Electromagnétisme et d'Acoustique, Département d'Electricité, Ecole Polytechnique Fédérale de Lausanne, CH-1015 Lausanne, Switzerland


Abstract
This paper presents a speech compression/expansion method that aims to improve the intelligibility in highly reverberant industrial premises where acoustic corrections are excluded. By placing a digital signal processor upstream of the sound system, it is possible, using frequency-based criteria, to detect in real time the phonemes requiring compression (typically the vowels) and those requiring expansion (for example the occlusive consonants). The assessment of subjective Intelligibility carried out on a workstation shows an improvement in the CVC scores in the range of 20%.



© EDP Sciences 1992