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In Reply to: Re: Digital sound posted by Jon Risch on June 2, 2002 at 10:41:16:
> [ Every aberation from sinewave should be seen also as a harmonic distortion, .... ]
> This is not correct
> Not all distortions are harmonically related, nor are all distortions signal correlated.OK, word by word, in this case of 20kHz sinewave signal, every relic of the any harmonic component of the fundamental 20kHz signal (60kHz, 100kHz…) should be at the same time visible as aberration of the waveform (in time domain) and as presence of some harmonic components (in frequency domain). For the sinewave, presence of harmonic components is harmonic distortion. BTW you’re right, there are many other kinds of distortions (about 15, but my impression is that there are many to be discovered yet)…
Something about time-domain behavior of digital can be seen at the http://www.sakurasystems.com/articles/Kusunoki.html (scroll to bottom of the page, here is discussed even 1kHz sinewave), but there are not all diagrams I’m looking for.
> However, as you surmise, it may be that there are interactions with ultrasonic energy that lead to audible artifactrs within the audio band.
I’m not surmise, I’m absolutely sure. But TIM is just a consequence. And (this is what I surmise) not the only one consequence.
> I stongly suggest that you look more deeply into how CD digital audio works, with emphasis on anti-aliasing and reconstruction filtering.
Actually, original intention of this my message was to thank for this suggestion (any recommended book?), trust in me, I’ll work hard and one day you’ll be proud. Thereby, my question was how much CD players are successful in this reconstruction (whatsoever way they work this - of course there are a several ways).
Sincerely yours,
Pedjap.s.: Is really so hard to understand what I’m looking for?
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Follow Ups
- Re: Digital sound - Pedja 13:44:11 06/02/02 (1)
- Re: Digital sound - Jon Risch 19:24:52 06/02/02 (0)
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