The quest for inter sample peak limiting
jimdrake
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#1
28th January 2013
Old 28th January 2013
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drake.ch
 
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The quest for inter sample peak limiting

Ideally i would like a massey limiter that stops inter sample peaks, but i don't think that will happen.

The closest I have found is the fab filter but that still lets a little bit over the ceiling.

Then i thought, why not just run the massey limiter in a 192k session?

What would be the best practice for sample rate converting in this situation where input and output is 44.1?
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28th January 2013
Old 28th January 2013
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Elephant

edit: if you use the massey limiter @ 192k then convert to 44.1k, you will get ISPs...
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28th January 2013
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I found iZotope resampler to be very good one. And about ISPs, the Barricade limiter never let any peak above the ceiling and I use it frequently.
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28th January 2013
Old 28th January 2013
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VladG free Limiter n°6' last stage is very effective at suppressing ISPs. I'm using it often after AD clipping or Ozone 5 limiter. In my opinion, it changes the sound a lot less than using Ozone in oversampling mode.
WBM
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28th January 2013
Old 28th January 2013
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WBM
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Elephant or ozone 4 or 5 good intersamples catchers
jimdrake
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28th January 2013
Old 28th January 2013
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drake.ch
 
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Quote:
Originally Posted by stinkyfingers View Post
edit: if you use the massey limiter @ 192k then convert to 44.1k, you will get ISPs...
true, but i was guessing more along the lines of fabfilter (approx 0.5dB) rather than the massey on its own at 1x sample rates (more like 3dB).

all the other suggestions do't work on pro tools, except ozone, haven't looked at that in a while.....
Alexey Lukin
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28th January 2013
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Quote:
Originally Posted by sat159p1 View Post
And about ISPs, the Barricade limiter never let any peak above the ceiling and I use it frequently.
Barricade is not reliable for ISPs in my experience: it creates ISPs of +0.83 dB in ISP mode on a sine sweep when it passes ~15 kHz.
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Hermetech Mastering
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29th January 2013
Old 29th January 2013
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Again, Elephant with 4 x OS is GREAT at catching 99.9% of all ISPs.
bendermastering
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29th January 2013
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Also check out Elixir from Flux::. It was just updated today/yesterday, finally at 64bit plus some other performance improvements.
Joe_caithness
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29th January 2013
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I used Elephant in OS x4 and never have had an intersample peak.
huejahfink
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29th January 2013
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TC Brickwall Limiter set to -0.1, upsampling mode. Really tight on ISP!

AFAIK upsampling is done on the sidechain for the detection circuit, and not on the audio itself, making this a pretty transparent way to remove ISP
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29th January 2013
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17th June 2013
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From a EBU paper about R-128, here are le potential errors regarding the over-sampling used for ISP detection:

ISPOver-sampling ratio
4
8
10
12
14
16
32

Under-read (dB) max fnorm = 0.45
0.554
0.136
0.087
0.060
0.044
0.034
0.008

Under-read (dB) max fnorm = 0.5
0.688
0.169
0.108
0.075
0.055
0.042
0.010
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