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In Reply to: RE: The room is fairly medium sized posted by Ethan Winer on December 12, 2007 at 13:46:08
If you have or know of evidence that comb filter coloration generated by early reflections in small listening rooms when MUSIC is played through stereo loudspeakers is audible, please tell me, I'm all ears!
Starting from Toole's 2006 AES paper "Loudspeakers and rooms for sound reproduction - a scientific review", I've read most of the papers he cites and many more. There is no evidence whatsoever that under the above conditions coloration is audible. The available evidence strongly suggests that comb filter coloration is NOT audible with music. So if you know of any research, let me know.
To make it clear, I'm not discussing the audibility of comb filter coloration per se, there's plenty of psychoacoustic evidence that shows that that type of coloration is audible.
FYI, early reflections will be inaudible when less than 22 dB below the direct sound at 3 ms, and when less than 31 db below direct sound at 15-30 ms:
Begault et al. (2004), “Early reflection thresholds for anechoic and reverberant stimuli within a 3-D sound display”, The 18th International Congress on Acoustics, Kyoto, Japan, April 4-9, 2004
Klaus
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