AES Budapest 2012
Paper Session P7
P7 - Perception
Thursday, April 26, 17:00 — 18:00 (Room: Liszt)
Chair:
Bozena Kostek
P7-1 Detection of Two Subwoofers: Effect of Broad-Band-Channel Level and Crossover Frequency—Jussi Rämö, Sakari Bergen, Julian Parker, Veli-Matti Yli-Kätkä, Ville Pulkki, Aalto University - Espoo, Finland
The use of multiple subwoofers can be advantageous compared to a setup consisting of a single subwoofer due to the cancellation of room modes. We investigate the effect of subwoofer crossover frequency and program material on the perceived localization of bass frequencies using single or dual subwoofers, via a listening test. Test results show that dual subwoofer setups are harder to detect than single subwoofer setups and also exhibit the well-known relationship between crossover frequency and difficulty of localization.
Convention Paper 8609 (Purchase now)
P7-2 Pitch, Timbre, Source Separation, and the Myths of Loudspeaker Imaging—David Griesinger, David Griesinger Acoustics - Cambridge, MA, USA
Standard models for both timbre detection and sound localization do not account for our acuity of localization in reverberant environments or when there are several simultaneous sound sources. They also do not account for our near instant ability to determine whether a sound is near or far. This paper presents data on how both semantic content and localization information is encoded in the harmonics of complex tones and the method by which the brain separates this data from multiple sources and from noise and reverberation. Much of the information in these harmonics is lost when a sound field is recorded and reproduced, leading to a sound image which may be plausible but is not remotely as clear as the original sound field.
Convention Paper 8610 (Purchase now)
