48, 44.1 khz, why no and/or not 40 khz, Only for 2 channel audio........... |
48, 44.1 khz, why no and/or not 40 khz, Only for 2 channel audio........... |
  Dec 18 2002, 04:11
Post
#1
|
|
 Group: Members Posts: 657 Joined: 4-December 02 Member No.: 3989  |
Look at this Poll
How high can you hear (with music & lowpass) The poll starter didn't put frequency above 20 khz in the poll So why don't just use a 40 khz PCM instead of 44.1 khz as human can't listen to frequency above 20 khz? 16 x 44100 x2 = 1141.2 kbit/s 16 x 40000 x 2 = 1280 kbit/s It does help to save some space! |
 |
 
|
 |
 Dec 20 2002, 01:56
Post
#2
|
|
 Group: Members Posts: 198 Joined: 19-October 02 From: Valencia Member No.: 3577 |
QUOTE (kotrtim @ Dec 18 2002 - 03:11 AM) So why don't just use a 40 khz PCM instead of 44.1 khz as human can't listen to frequency above 20 khz? IMO That's because some people can hear even more than 20kHz....up to 22kHz. Me, for example, with my equipment (SBLive 5.1, FPS1000 4.1 speakers) I've generated sine waves (sampling rate 48000Hz, of course.....) and I can hear up to 20kHz (the speakers' and soundcard' response is no more than 20kHz, if more juice is used then downpitching occurs) Of course, any frequency above 16kHz, for me, requires additional amplification (normalization) gradually....but I can actually hear 'em. Would be nice if I could test for hearing above 20kHz 
|
|
|
|
kotrtim 48, 44.1 khz, why no and/or not 40 khz Dec 18 2002, 04:11
tangent So you have some space to play about with to do a ... Dec 18 2002, 04:35 ViPER1313 Low/High pass filters and sampling rates are total... Dec 18 2002, 05:04 /\/ephaestous QUOTE From John Watkinson, The Art of Digital Audi... Dec 18 2002, 08:24 KikeG QUOTE (ViPER1313 @ Dec 18 2002 - 05:04 AM)Low... Dec 18 2002, 08:43 Gabriel The answer was given above. It is because at the b... Dec 18 2002, 09:02 SometimesWarrior QUOTE (/\/ephaestous @ Dec 17 2002 - 11:... Dec 18 2002, 09:15 Neo Neko If you can or can not hear above 20Khz etc you can... Dec 18 2002, 22:00 SometimesWarrior QUOTE (Neo Neko @ Dec 18 2002 - 01:00 PM)If y... Dec 18 2002, 22:45 mvdb QUOTE (kotrtim @ Dec 18 2002 - 03:11 AM)So wh... Dec 19 2002, 01:00 Oge_user If I understand correctly, a wave file 44100 hz 16... Dec 21 2002, 11:22
Pio2001 In the digital domain, yes. (example, generating t... Dec 21 2002, 12:42 |
|
Lo-Fi Version | Time is now: 23rd May 2013 - 08:44 |
