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Digital Drive Upsamplers, DACs, jitter, shakes and analogue withdrawals, this is it. |
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Digital Drive Upsamplers, DACs, jitter, shakes and analogue withdrawals, this is it. |
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In Reply to: Re: a decent paper indeed posted by Daniel Espley on February 23, 2001 at 08:55:08:
Daniel wrote:> I would think that genuine ultrasonic information, as supplied by hi-res formats would be supperior still, but who knows?
Since we are dealing (mostly) with harmonic overtones (and not true fundamentals) in the ultrasonic region, maybe the discrete reproduction of these is not (perceptibly) important. Maybe a highly corelated noise component (alias distortiion) will add a sense of "naturalness" that a BW limited signal (to kill this noise component) will not.
> It also bolsters the case for super-tweeters, even when using a non-oversampling DAC.
Could be.
But with using a 44.1kHz sampling frequency, in the upper octave of reconstruction (1/4-1/2Fs or 11.025kHz-22.05kHz), the only thing that can be "reassembled" is a pure sine wave.
Maybe by "dirtying" up this with a correlated noise will impart an assymmetry to the waveform, that is more closly percieved as "natural" without the necessity of a wider bandwith.
Just speculatin'....
Cheers,
-Steve
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Follow Ups
- Re: a decent paper indeed - -Steve 02/23/0112:43:07 02/23/01 (2)
- Re: a decent paper indeed - Daniel Espley 03:19:42 02/24/01 (1)
- Re: a decent paper indeed - Audio Fan 09:17:19 02/24/01 (0)
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