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The importance and effect to and above 20kHz...

Hi Everyone -

I was wondering if anyone would care to elaborate on the importance of system frequency playback as the frequency range approaches and passes 20kHz. What effect does 15kHz have on music, for instance, and why is it important to keep the upper frequencies as linear as possible? How about 18kHz, or 20kHz, or 25kHz? What effect can these specific frequency regions have on the overall performance, and why should I keep them linear?

Let me clarify, I used those particular frequencies as examples, but if they can be expounded upon, then go ahead. I'm hoping everyone understands what I'm trying to get at. What effect can the upper treble frequencies have and why is linearity in these regions so important? Same goes for above 20kHz, say in the 22-30kHz region.

Can anyone explain?

Thanks for you help.
cdwallace

Showing 1 response by cdwallace

cdwallace OP
216 posts
 
So then...I guess my next question would be...how important is it to build a system around the >20kHz factor, so to speak?

If there are any benefits, be it small or great, are these added benefits substantial enough to warrant building a speaker around them? For instance, 99.5% of todays electronics are capable of transmitting signals above 20kHz, most about 50kHz. This covers the CD Player, Pre/Pro, Amp and even cable sections; which leaves the weakest link...the speakers. Some claim but few produce over 22kHz. Even fewer over 25kHz to 30kHz. Mind you, >20kHz is inaudible, but it adds the "air" to the recording. Is this the only benefit and should a system be built around it?
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