A dipole loudspeaker radiates from both its front and its rear surfaces, with the radiation from the rear 180° out of phase with the radiation from the front. A conventional monopole loudspeaker is a pressure source, but a dipole loudspeaker is a velocity source. The dipole frequency response in the room thus depends on orientation as well as on room location. The directional pattern of a dipole, however, can provide better auditory localization than a monopole when the dipole is angled into the room. A simulation study is presented of the effects of room placement and orientation angle on the frequency response of a dipole loudspeaker in a room. The frequency response using a two-dimensional room model is computed, and a perceptual model is used to estimate the importance of the room response effects in coloring the reproduced sound. The simulation results indicate that the response of a dipole is more sensitive to changes in room position than that of a monopole, and that it is also sensitive to the angle of orientation within the room.
Kates, James M.
Affiliation: Cirrus Logic, Boulder, CO
JAES Volume 50 Issue 5 pp. 363-374; May 2002
Publication Date: May 15, 2002
No AES members have commented on this paper yet.
If you are not yet an AES member and have something important to say about this paper then we urge you to join the AES today and make your voice heard. You can join online today by clicking here.