Subjective and objective rating of intelligibility of speech recordings

This paper reports the results of tests made to assess the intelligibility of speech recordings and a STIPA modulated noise stimulus made with several microphone systems placed in various locations in a range of controlled test spaces. The intelligibility of the test speech recordings was determined by a subjective listening test. STIPA was determined for each physical arrangement and compared with the intelligibility test scores and the correlation between STIPA and the intelligibility scores was determined. A computer program was written to determine STIPA in accordance with IEC 60268-16.Ce document fait \ue9tat des r\ue9sultats des essais effectu\ue9s pour \ue9valuer l'intelligibilit\ue9 de la parole, ainsi que d'un bruit modul\ue9 avec indice STIPA (de l'anglais Speech Transmission Index for Public Address Systems), r\ue9alis\ue9s avec plusieurs agencements de microphones en divers emplacements de toute une gamme d'espaces d'essai contr\uf4l\ue9s. L'intelligibilit\ue9 des enregistrements d'essais de parole a \ue9t\ue9 d\ue9termin\ue9e au moyen d'un essai d'\ue9coute subjective. L'indice STIPA a \ue9t\ue9 \ue9tabli pour chaque disposition physique diff\ue9rente, et compar\ue9 aux cotes des essais d'intelligibilit\ue9, et l'on a corr\ue9l\ue9 ces cotes aux indices STIPA. Un programme a \ue9t\ue9 \ue9labor\ue9 dans le but de d\ue9terminer les indices STIPA en conformit\ue9 avec la norme IEC 60268-16.Peer reviewed: YesNRC publication: Ye