Theatres Modernes ou Anciens, Salles Symphoniques, Sonorisation de Grands Locaux - Utilisation de l'Indice Rasti et du Temps de Reverberation Initial pour l'Analyse des problemes d'Acoustique Architecturale

Auteurs-es

  • J.-G. Migneron Lab. d'Acoust., Laval Univ., Quebec, Que., Canada
  • C. Martel

Mots-clés :

acoustic variables measurement, architectural acoustics, reverberation, modern theatres, ancient theatres, symphony halls, Rasti index, initial reverberation time, architectural acoustics problems, impulse response, EDT-5, EDT-10, EDT-15, multi-purpose halls, amphitheatres, Louis Frechette Hall, Albert Rousseau Hall, Montreal Olympic Stadium, intelligibility, New Richmond Theatre, National Theater Institute of Montreal

Résumé

A correlation between the Rasti index and the impulse response, namely the EDT-5, EDT-10 and EDT-15 dB is analysed, both in the laboratory and during experiments conducted in multi-purpose halls and in large amphitheatres equipped with sound reinforcement systems. The close relationship between the Rasti index and the EDT measurements is demonstrated. The authors also show the necessity to measure the EDTs at the same localization and with the same directivity as the normal hall sources for example, with the use of a powerful omnidirectional source in order to study the acoustical behavior of an orchestra shell (Louis Frechette Hall of the Grand theatre Quebec or the Albert Rousseau Hall) or with the measurement of impulse response through the sound system of a large amphitheatre (Montreal Olympic Stadium). In addition in providing a better understanding of the parameters governing the intelligibility, the proposed approach could be very helpful for the acoustical design of new and (to be) renovated halls (New Richmond Theatre, The National Theater Institute of Montreal)

Fichiers supplémentaires

Publié-e

1991-09-01

Comment citer

1.
Migneron J-G, Martel C. Theatres Modernes ou Anciens, Salles Symphoniques, Sonorisation de Grands Locaux - Utilisation de l’Indice Rasti et du Temps de Reverberation Initial pour l’Analyse des problemes d’Acoustique Architecturale. Canadian Acoustics [Internet]. 1 sept. 1991 [cité 20 févr. 2025];19(4):25-6. Disponible à: https://jcaa.caa-aca.ca/index.php/jcaa/article/view/652

Numéro

Vol. 19 No. 4 (1991)

Rubrique

Actes du congrès de la Semaine canadienne d'acoustique

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