Sound Attenuation

["Michael S. Gordon" <mgordon@xxxxxxxxxxxxxxx>]

Dear List,

        

A
colleague of mine is interesting in running a monaural sound localization
experiment. It is important for this experiment that he present his
stimuli from a free-field speaker array, so headphones can not be
used.  Our question is what would be the most effective technique
for attenuating the sound in the non-listening ear? The sound stimuli
will be 50Hz - 8 kHz and 40 - 70 dB. 

Any information you have on how best to accomplish this attenuation,
references, and advice would be greatly appreciated. 

Thank you in advance, 

Mike

--
Michael S. Gordon
Department of Psychology
University of Toronto at Mississauga
Mississauga, Ontario
CANADA L5L 1C6
mgordon@utm.utoronto.ca