Listener-based Analysis of Surface Importance for Acoustic Metrics

Acoustic quality in room acoustics is measured by well defined quantities, like definition, which can be derived from simulated impulse response filters or measured values. These take into account the intensity and phase shift of multiple reflections due to a wave front emanating from a sound source. Definition (D50) and clarity (C50) for example correspond to the fraction of the energy received in total to the energy received in the first 50 ms at a certain listener position. Unfortunately, the impulse response measured at a single point does not provide any information about the direction of reflections, and about the reflection surfaces which contribute to this measure. For the visualization of room acoustics, however, this information is very useful since it allows to discover regions with high contribution and provides insight into the influence of all reflecting surfaces to the quality measure. We use the phonon tracing method to calculate the contribution of the reflection surfa...

• Type: Conference
• Year: 2007
• Where: VIS
• Authors: Frank Michel, Eduard Deines, Martin Hering-Bertram, Christoph Garth, Hans Hagen
• Keywords: Acoustic Quality Measure, IEEE Visualization, Impulse Response, Simulated Impulse Response, VIS 2007, Visualization