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Are high sample rates better for DSP?
Ethan Winer
post Jun 10 2012, 20:13
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I've read many times that audio plug-ins such as equalizers work better at higher sample rates, even if audio generally doesn't benefit. It seems unlikely that there's a practical advantage to up-sampling all your files, or recording at 96 KHz in the first place, but is there a potential theoretical improvement? Or is this just another Internet myth?

--Ethan


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bandpass
post Jun 11 2012, 08:00
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QUOTE (knutinh @ Jun 10 2012, 20:46) *
The higher the sample-rate, the better any approximations that assume that the sample-rate is infinite (or that logic propagation speed is infinite) will be.

True, but the worse any approximations that assume that the sample-rate is say 44-48kHz will be.

QUOTE (extrabigmehdi @ Jun 11 2012, 02:30) *
That's interesting, so basically if you want to "remaster" a track :
let's say denoising, eq, exciters, reverb, stereo ehancers , and why not slight loudness compression,
it would be better to upsample first, and then downsample once the work is done ?

It depends on how each effect you're using has been implementedócheck the specs.
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Posts in this topic
- Ethan Winer   Are high sample rates better for DSP?   Jun 10 2012, 20:13
- - knutinh   The higher the sample-rate, the better any approxi...   Jun 10 2012, 20:46
- - lvqcl   Here is an example of such filter (with explanatio...   Jun 10 2012, 20:56
- - benski   Yes, many filters work better with higher sampling...   Jun 10 2012, 21:17
|- - Ethan Winer   QUOTE (knutinh @ Jun 10 2012, 15:46) The ...   Jun 11 2012, 17:18
|- - saratoga   If your software is good, it should be upsampling ...   Jun 11 2012, 17:53
|- - drewfx   QUOTE (Ethan Winer @ Jun 11 2012, 12:18) ...   Jun 11 2012, 19:11
|- - Ethan Winer   QUOTE (saratoga @ Jun 11 2012, 12:53) If ...   Jun 12 2012, 17:46
|- - extrabigmehdi   QUOTE (Ethan Winer @ Jun 12 2012, 16:46) ...   Jun 12 2012, 18:15
- - xnor   Many EQs use simple bilinear-transformed filters (...   Jun 11 2012, 01:37
- - Woodinville   In addition to the warping one sees in a bilinear ...   Jun 11 2012, 01:46
- - extrabigmehdi   That's interesting, so basically if you want ...   Jun 11 2012, 02:30
- - bandpass   QUOTE (knutinh @ Jun 10 2012, 20:46) The ...   Jun 11 2012, 08:00
|- - knutinh   QUOTE (bandpass @ Jun 11 2012, 09:00) Tru...   Jun 11 2012, 08:30
- - bandpass   From a practical perspective, a particular effect/...   Jun 11 2012, 09:59
|- - knutinh   QUOTE (bandpass @ Jun 11 2012, 10:59) ......   Jun 11 2012, 11:55
- - greynol   I know the unofficial mantra around here is all th...   Jun 12 2012, 17:59
|- - Ethan Winer   QUOTE (greynol @ Jun 12 2012, 12:59) You...   Jun 12 2012, 19:35
|- - drewfx   QUOTE (Ethan Winer @ Jun 12 2012, 14:35) ...   Jun 12 2012, 20:29
|- - saratoga   QUOTE (Ethan Winer @ Jun 12 2012, 14:35) ...   Jun 12 2012, 21:12
|- - Ethan Winer   Thanks Drew for some hard evidence. Can you explai...   Jun 12 2012, 22:46
||- - benski   It's mostly that the shape (aka Q) is going to...   Jun 12 2012, 23:39
||- - drewfx   QUOTE (Ethan Winer @ Jun 12 2012, 17:46) ...   Jun 13 2012, 01:52
||- - andy o   I'm guessing these are the reasons why A/V rec...   Jun 13 2012, 03:27
|||- - Arnold B. Krueger   QUOTE (andy o @ Jun 12 2012, 22:27) I...   Jun 25 2012, 13:10
|||- - Woodinville   QUOTE (Arnold B. Krueger @ Jun 25 2012, 05...   Jun 27 2012, 21:59
||- - Ethan Winer   QUOTE (drewfx @ Jun 12 2012, 20:52) The 1...   Jun 13 2012, 19:55
|- - Woodinville   QUOTE (saratoga @ Jun 12 2012, 13:12) QUO...   Jun 13 2012, 01:22
- - greynol   Have you read the responses to your topic? I want...   Jun 12 2012, 19:42
- - greynol   As for the "it's best to record at 96kHz ...   Jun 13 2012, 00:53


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