In Reply to: Read Robert E. Greene's essay in TAS April 2012 issue, p. 14 posted by hesson11 on May 3, 2012 at 16:37:17:
Robert Greene makes an excellent point (in his article). A loss of power (output) in the "power" passband (100 Hz - 300 Hz) due to destructive interference between the speaker's direct output and its output reflected off the floor, throws the sound of the speakers out of wack and shifts emphasis onto the speaker's upper frequencies.
A power band suckout makes the speaker sound unbalanced. Thats what the ear/brain reacts to. We interpret this shift down in low frequencies, as a shift up in high frequencies.
Classic tone control "tilt" switches operated this way. To give the illusion of boosted high frequencies, low frequencies are tilted down from a center "pivot" frequency. To give the illusion of boosted low frequecies, high frequencies are shifted down from a center "pivot" frequency.
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Follow Ups
- RE: Excellent essay in TAS April 2012 issue, p. 14 - layman 08:33:41 05/04/12 (0)