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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: How hard should I strive to get maximum signal? posted by Phil_in_CA on March 24, 2012 at 18:24:04:
With analog, clipping is generally soft the first few dBs and gets progressively harsh as you get past the saturation point. In digital, there is no "gray area" saturation point -- only hard and nasty clipping after the "bit bucket" is full.
However, the fact is that some DACs process the signal in such a way that it is best that they not be fed a signal hotter than -3dB. At that point, it seems they will reach 0dB internally and a recorded signal above the -3dB point actually causes problems for the D-A converter. This applies to PCM. For DSD recording, I believe the max signal recorded should be no higher than -6dB (due to a similar reason).
There is a discussion at computeraudiophile.com (a few recording people contributed in the thread -- Barry Diament, Cookie Marenco and maybe a few others) re: the subject of recording levels in digital. Somewhere here at AA, I believe it was Christine Tham -- a few years ago -- brought up this subject because she was hearing what sounded like clipping from some of her discs, yet they were not "clipped" in the recording: they were (just) below 0dB.
I'm sure a search here and there will bring up relevant info.
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Follow Ups
- don't record hot in digital - Joe Murphy Jr 21:07:33 03/24/12 (9)
- That's what I've heard and read, but ... - Dave Pogue 09:10:51 03/26/12 (5)
- RE: That's what I've heard and read, but ... - Tony Lauck 10:52:45 03/26/12 (0)
- two possibilities - Joe Murphy Jr 09:47:42 03/26/12 (3)
- Thanks, just dragged out the owner's manual. - Dave Pogue 11:21:25 03/26/12 (2)
- RE: Thanks, just dragged out the owner's manual. - Tony Lauck 13:05:36 03/26/12 (1)
- Thanks again, but ... - Dave Pogue 14:23:52 03/26/12 (0)
- RE: don't record hot in digital - Tony Lauck 10:04:35 03/25/12 (2)
- RE: don't record hot in digital - tom.dennehy 22:10:39 03/25/12 (1)
- RE: don't record hot in digital - Tony Lauck 07:46:43 03/26/12 (0)
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