On Thu, 25 Jan 2001 08:35:10 -0500 (Eastern Standard Time) Ken Steele
<[EMAIL PROTECTED]> wrote:
>
> > BTW, it seems to have a misprint as well, because it says that
> > these are under ideal conditions, and than "actually, few human
> > adults can ordinarily hear tones much above 8,000 cycles". I'm
> > sure they meant 18,000.
> >
>
> This may not be a misprint but a reference to equal loudness contours.
> Our sensitivity to sounds is a U-shaped function of frequency.
I should have said loudness contours and masking effects. Note MP3
encoders take advantage of these effects in their "lossy" compression
technique by selectively removing frequencies from the file.
Ken
----------------------
Kenneth M. Steele, Ph.D. [EMAIL PROTECTED]
Dept. of Psychology
Appalachian State University
Boone, NC 28608
