Documents
Poster
TIME DOMAIN ACOUSTIC CONTRAST CONTROL IMPLEMENTATION OF SOUND ZONES FOR LOW-FREQUENCY INPUT SIGNALS
- Citation Author(s):
- Submitted by:
- Daan Schellekens
- Last updated:
- 18 March 2016 - 11:35am
- Document Type:
- Poster
- Document Year:
- 2016
- Event:
- Presenters:
- Daan Schellekens
- Categories:
- Log in to post comments
Sound zones are two or more regions within a listening space where listeners are provided with personal audio. Acoustic contrast control (ACC) is a sound zoning method that maximizes the average squared sound pressure in one zone constrained to constant pressure in other zones. State-of-the-art time domain broadband acoustic contrast control (BACC) methods are designed for anechoic environments. These methods are not able to realize a flat frequency response in a limited frequency range within a reverberant environment. Sound field control in a limited frequency range is a requirement to accommodate the effective working range of the loudspeakers. In this paper, a new BACC method is proposed which results in an implementation realizing a flat frequency response in the target zone. This method is applied in a bandlimited low-frequency scenario where the loudspeaker layout surrounds two controlled zones. The performance is verified with experimental results in an acoustically damped room.