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RE: Ideal frequency response curve

Clearly, there is some confusion here about the point of your question.

At the outset, your question seemed to be obvious and clear. However, several people seem to think that you're asking about loudspeaker frequency response curves. For our collective recollection, here is what you wrote:

*****

"Many of us use some sort of real-time sound level meter to position speakers and/or configure equalizers to get smoothest (i.e. flattest) frequency response at the listening position.

Yet a measured flat response at the upper end of the spectrum might sound subjectively way too bright and a measured flat response at the low end might sound subjectively too anemic. And I'm not talking about problems of calibration with the meter itself.

I remember an "ideal" measured response curve published many years ago by Bruel & Kjaer (or somebody)that addressed this. "

****

Re-reading your original post, it's clear that you're asking about the room curve, as averaged over some period of time, not the speaker's FR curve as measured in anechoic/semi-anechoic/gated conditions. Please correct me if I misunderstood your question.

And, so, yes, a roll-off at upper frequencies is desirable, and is one of the things which acousticians consider when designing or renovating rooms for music.

:)

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