145.64.134.241
In Reply to: RE: New Room Measurements posted by bhjazz on May 13, 2009 at 21:43:50
>I see evidence of some comb filtering>
Human hearing has a mechanism called "binaural decoloration" which means that effects such as comb filters can be measured but not necessarily be perceived, provided that they are below established audibility thresholds:
Salomons (1995), “Coloration and binaural decoloration of sound due to reflections”, Thesis, Delft University
http://www.darenet.nl/en/page/repository.item/show?saharaIdentifier=tuddare:oai:tudelft.nl:200755
>I can definitely say that I don't like the 8dB suckout at 80Hz<
The same as above applies: it's not because you measure something that you also will perceive it. Considering the equal loudness curves an 8 dB suckout may not be audible at all.
Bücklein (1981), „The audibility of frequency response irregularities“, J. of Audio Eng. Soc., S.126
Robertson et al., "Threshold of Hearing and Equal-Loudness Relations for Pure Tones, and the Loudness Function", J. Acoust. Soc. Am. Volume 29, Issue 12, pp. 1284-1288 (December 1957)
I would use measurements as diagnostic tool AFTER having noticed a problem when listening to music. As long as you don't have a solid correlation between what you hear and what you measure measurements as such are of little use, IMHO.
Klaus
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