The Model versus the room: Parametric and aural comparisons of modeled and measured impulse responses

Abstract

Computer modeling and auralization have proven their value in the acoustical design of performance venues. However, achieving and evaluating parametric accuracy and perceptual plausibility continues to be a challenge. Advances in our measurement techniques have given us new opportunities to test our models against reality in several recently completed spaces. Impulse responses were collected from the built spaces using a B-format (multichannel) microphone, and these were analyzed in terms of numerical acoustical parameters, and for directionality and timing of reflected sound arrival. These multichannel impulse responses were also convolved with speech and music, and listening comparisons were made with the same speech and music convolved with simulated impulse responses. This session will present the results of these tests and lessons learned regarding strengths and limitations of these techniques.

Acoustics of the Blue Whale Auditorium in Buenos Aires

“…More importantly, no one reported any audible echo, or any kind of defect related to the temporal structure of the early reflections. 15…”