Loudspeaker equalization for auditory research.
The equalization of loudspeaker frequency response is necessary to conduct many types of well-controlled auditory experiments. This article introduces a program that includes functions to measure a loudspeaker's frequency response, design equalization filters, and apply the filters to a set of stimuli to be used in an auditory experiment. The filters can compensate for both magnitude and phase distortions introduced by the loudspeaker. A MATLAB script is included in the Appendix to illustrate the details of the equalization algorithm used in the program.
MacDonald
Justin A
JA
Army Research Laboratory, Aberdeen Proving Ground, Maryland, USA. jmacd@nmsu.edu
Tran
Phuong K
PK
D000161:Acoustic Stimulation / Q000295:instrumentation*; D000465:Algorithms; D000669:Amplifiers, Electronic; D006801:Humans; D011930:Reaction Time; D012106:Research / Q000706:statistics & numerical data*; D012107:Research Design