Erik de Castro Lopo wrote: > On Mon, 26 Jan 2004 10:19:59 +0100 > Joern Nettingsmeier <nettings@xxxxxxxxxxxxxxxxxxxxxx> wrote: > > >>people can't hear over 20k. period. 48k sampling rate gives you 24k >>minus what's cropped off by the aliasing filter. > > > Thats not the full story. There was a Japanese study where untrained > listeners could tell the difference between 10kHz sine waves and 10kHz > square waves in double blind tests. That means that the listeners > could tell presence or absence of the 30kHz third harmonic of the > square wave. > Theroretically this should not have been possible which indicates that > theories of hearing perception are far from complete. or there *may* have been aliasing or reproduction artifacts which provided clues to the listeners within the 20-20k range. <babble type="not strictly scientific"> and even if they could tell a difference, this does not imply one was better or more hifi than the other - most people can hear the difference of a 192k mp3 and a 44k cd track, but i've yet to meet somebody who could always determine which is which, or even which of the two is better. on my monitors, i can hear a 19k sine wave at 6db over my normal listening level. but: i'm 28 yrs old, and i've been doing about 20 gigs and/or mixing jobs a year at higher levels that i'm comfortable with for about 10 years. i really doubt my ears are still that good, and my guess is it's some artifact from the tweeters. </babble> ok, now i shut up :) in any case, if you have papers on studies about this, send them over. it seems there is still much to learn. -- "I never use EQ, never, never, never. I previously used to use mic positioning but I've even given up on that too." - Jezar on http://www.audiomelody.com J?rn Nettingsmeier Kurf?rstenstr 49, 45138 Essen, Germany http://spunk.dnsalias.org (my server) http://www.linuxaudiodev.org (Linux Audio Developers)
