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From:
Harvey Thornburg
Date:
Fri, 4 Feb 1994 00:23:14 -0800 (PST)
Subject:
Re: Vinyl vs Cd
Mbox:
idm.9402.gz
tfinn wrote:
quoted 2 lines Digital will ALWAYS be an approximation of our analog world. Else it> Digital will ALWAYS be an approximation of our analog world. Else it > ceases to be sampling -- it will be copying, and it will be analog.
But if ideal sampling occurs satisfying the Nyquist criterion, and quantization occurs to a point beyond our ability to discern information, then to us (in the experiential realm) what's the difference? I guess we are left with the old question about if a tree falls in the forest, and no one is around to hear it, does it make a sound. Whatever. the Nyquist criterion is your friend... As an aside, what are your opinions on digital vs. analog _synthesis_? In the current state of affairs, barring $200,000 machines contrary to the whole point of this music, I overwhelmingly prefer the latter, for the following reason: Analog synths, like any other "analog" instrument such as the violin or piano, have _dynamically indeterminate_ outputs. All the imperfections in an analog system change unpredictably over time, and are often nonlinear. This generates in the listener a feeling of warmth, of "naturalness", of flow. Digital synths, with all their conveniences, to this date generally lack this characteristic. Much of digital synthesis in the consumer market deals with manipulating preset, statically determinate waveforms. The only noise that gets introduced is quantization error, which is necessarily static. In other words, you play a sound, and you know exactly what it's going to sound like - no suprises - everything cold, static, determinate. The basic techniques may be copied from analog synths, but without their "imperfections". There is, however, a way around this. By introducing filters (preferably with feedback) that incorporate nonstationary _stochastic_ elements, one can hope to approximate the wonders of the analog world. One way to do this is to incorporate human feedback. At least this is my theory - no time to implement it :( I just wish that as the music gets more "biomorphic" (how I consider Black Dog, B12, etc.) the synthesis techniques will also.
quoted 5 lines Off in the ozone...> > Off in the ozone... > > tfinn@crash.cts.com (Preferred) > The Finn/ VLA
/-oOOo------------oOOo-\ --------------------------/------------------------\-------------------------- "the only constant / Harvey D. Thornburg \ "the only certainty thing is change" / \ is uncertainty" / hthornbu@osiris.ac.hmc.edu \ ------------------------------------------------------------