Digital sound - Pedja - Tweakers' Asylum

Digital sound

Posted by Pedja (M) on May 29, 2002 at 18:54:43

At the http://groups.yahoo.com/group/Thunderstone_audiophile/messages , Thorsten gave a link to The Anstendig Institute. Iâ€™ve found there some very persuasive articles regarding the (aesthetic, rather than technical) principles of the digital sound. So, I have some thoughts about digital.

It is about CDâ€™s sampling freq. and Nyquist theory. Sometimes Iâ€™ve read how â€œthe main problem with digital is in a time domainâ€. Now Anstendig notices that a measurements in a time domain disappeared since digital appeared. Nyquist theory accurately solves the bottom sampling frteq. limit, but that is the limit of bare presence of certain frequency. Least possible sampling frequency is two times higher than the highest frequency that should be transferred. One sample for every half of the oscillation. Once up and once down. But that doesnâ€™t consider a shape of the waveform. And that is the fact, I think, I can call a scandal. I didnâ€™t make a lot of measurements, donâ€™t have a scope, but I measured something with PC. With 22kHz (I can say the same is with 20kHz) signals, I didnâ€™t saw any difference between square, sawtooth and triangular signals. Actually, all of them are triangular. And that seem so logical to me. I admit, Iâ€™m not absolutely sure in this measurements and thought, Iâ€™ll be glad to know if someone measured these signals at analog scope. Again, it seems so logical that the digital, at its upper limit, is absolutely unable to transfer any signal but triangular. And that means, the closer to upper limit, the waveform more similar to triangle. The effect is visible at much lower frequencies.

Explanation of digital sound? Is this possible?

Pedja

The Anstendig Institute (Open in New Window)

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Topic - Digital sound - Pedja 18:54:43 05/29/02 (36)

Re: Digital sound - Jon Risch 20:50:08 05/31/02 (9)

Re: Digital sound - Pedja 18:18:23 06/01/02 (4)

Re: Digital sound - Pedja 07:59:14 06/02/02 (3)

Re: Digital sound - Jon Risch 10:41:16 06/02/02 (2)

Re: Digital sound - Pedja 13:44:11 06/02/02 (1)

Re: Digital sound - Jon Risch 19:24:52 06/02/02 (0)

Re: Digital sound - Todd Krieger 09:10:12 06/01/02 (3)

Re: Digital sound - Jon Risch 21:33:35 06/01/02 (1)

Re: Digital sound - Todd Krieger 09:12:07 06/03/02 (0)

Re: Digital sound - SMM 11:39:07 06/01/02 (0)

Re: Digital sound - Todd Krieger 12:17:38 05/31/02 (0)

Re: Digital sound - Steve Eddy 10:32:28 05/30/02 (24)

Re: Digital sound - Todd Krieger 12:53:25 05/31/02 (7)

Re: Digital sound - Steve Eddy 14:57:04 05/31/02 (4)

Re: Digital sound - Todd Krieger 18:07:09 05/31/02 (0)

Re: Digital sound - Pedja 16:16:24 05/31/02 (2)

Re: Digital sound - Steve Eddy 17:40:33 05/31/02 (1)

Re: Digital sound - Pedja 18:08:33 05/31/02 (0)

Re: Digital sound - Pedja 14:39:56 05/31/02 (1)

Re: Digital sound - Todd Krieger 17:33:14 05/31/02 (0)

Re: Digital sound - Pedja 12:37:12 05/30/02 (15)

I think the Strangelove reference is perfect! - E-Stat 19:53:53 05/30/02 (3)

I think this is gone too far - Pedja 04:14:36 05/31/02 (2)

You might want to do some background research on the source - E-Stat 11:30:29 05/31/02 (1)

It seems you are occupied with this source more than I... - Pedja 13:08:38 05/31/02 (0)

Re: Digital sound - Steve Eddy 14:53:49 05/30/02 (10)

Re: Digital sound - Pedja 16:33:02 05/30/02 (2)

Re: Digital sound - Steve Eddy 17:52:09 05/30/02 (1)

Re: Digital sound - Pedja 19:09:31 05/30/02 (0)

Re: Digital sound - eagle1 15:37:54 05/30/02 (6)

Re: Digital sound - Steve Eddy 18:02:40 05/30/02 (0)

Re: Digital sound - Pedja 16:09:17 05/30/02 (4)

Re: Digital sound - Steve Eddy 18:07:32 05/30/02 (1)

Re: Digital sound - Pedja 18:52:13 05/30/02 (0)

Agree! - eagle1 17:16:54 05/30/02 (1)

Re: Agree! - Pedja 17:37:12 05/30/02 (0)

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