Stereo Tool
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Stereo Tool 6.10
https://forums.stereotool.com/viewtopic.php?t=3065		 Page 138 of 213
Author:  hvz [ Sun Aug 21, 2011 11:12 am ]
Post subject:  Re: Stereo Tool 6.10
Quote:
There is still distortion on highs caused by bass even on lower loudness settings.
I just realized that the highs protection works on not-upsampled audio. And for that it does seem to give better results than for upsampled audio. Until just now I thought it shouldn't make any difference, but I just realized that it actually _does_ make a difference. I'll create a version that takes upsampling into account.
Author:  eldoradofm [ Sun Aug 21, 2011 12:13 pm ]
Post subject:  Re: Stereo Tool 6.10
Could you also fix the sound when advanced bass distortion protection is turned off?
Because i wanted to compare to Old-style protections but that isn't working.
Author:  hvz [ Sun Aug 21, 2011 12:59 pm ]
Post subject:  Re: Stereo Tool 6.10
Quote:
Could you also fix the sound when advanced bass distortion protection is turned off?
Because i wanted to compare to Old-style protections but that isn't working.
^C
Author:  Bojcha [ Sun Aug 21, 2011 2:18 pm ]
Post subject:  Re: Stereo Tool 6.10
Hmm much better :) Seems all erlier betas had this bug. Now i can adjust something good.
Currently i only don't like punch is bit more 'killed'.

What is with frequency sliders ?
Author:  hvz [ Sun Aug 21, 2011 4:33 pm ]
Post subject:  Re: Stereo Tool 6.10
BETA099:
Fixed highs protection for oversampled clipping.
Fixed "Advanced Bass Distortion Protection" disabled mode.

Winamp DSP plugin: http://www.stereotool.com/download/dsp_ ... 20-099.exe
Stand alone version: http://www.stereotool.com/download/ster ... 20-099.exe
VST version: http://www.stereotool.com/download/vst_ ... 20-099.dll
VST version (No SSE2): http://www.stereotool.com/download/vst_ ... 20-099.dll
Command line version: http://www.stereotool.com/download/ster ... 20-099.exe
Linux command line version: http://www.stereotool.com/download/ster ... ETA620-099 NOT AVAILABLE
Linux GUI version: http://www.stereotool.com/download/ster ... ETA620-099 NOT AVAILABLE
Author:  hvz [ Sun Aug 21, 2011 4:36 pm ]
Post subject:  Re: Stereo Tool 6.10
Quote:
Hmm much better :) Seems all erlier betas had this bug. Now i can adjust something good.
Currently i only don't like punch is bit more 'killed'.

What is with frequency sliders ?
I'll enable them again soon. They are now hardcoded at 150 and 250 Hz though so I don't really expect that you'll be able to gain much from them. Do you still get less punch if you (slightly) lower the bass clipping level and keep the peak detection slider low (around 0.10%)?

--> Is the punch removing caused by the highs filtering or the mids filtering (set the 'Smoothe' slider to 0 to turn that off)? The highs filtering can currently not be disabled - I guess I should add that (and a slider which controls how hard it should filter).
Author:  Bojcha [ Sun Aug 21, 2011 4:54 pm ]
Post subject:  Re: Stereo Tool 6.10
Quote:
--> Is the punch removing caused by the highs filtering or the mids filtering (set the 'Smoothe' slider to 0 to turn that off)? The highs filtering can currently not be disabled - I guess I should add that (and a slider which controls how hard it should filter).
I think that punch is lost beause highs protection but not sure... that slider would be good..

edit: it's removed by highs but just a bit depend on track.. so it's a actually but mids.
if i turn off Protection i have very nice puch but lot off distortion..
If i turn Protecion ON, while Always Clip-100, sensitivity-0, Do not reduce-100, smoothe-0, peek der.-0... it still removes punch, and there is less distotion.
Smoothe does not have impact on punch almost at all.
Author:  hvz [ Sun Aug 21, 2011 5:30 pm ]
Post subject:  Re: Stereo Tool 6.10
Quote:
Quote:
--> Is the punch removing caused by the highs filtering or the mids filtering (set the 'Smoothe' slider to 0 to turn that off)? The highs filtering can currently not be disabled - I guess I should add that (and a slider which controls how hard it should filter).
I think that punch is lost beause highs protection but not sure... that slider would be good..

edit: it's removed by highs but just a bit depend on track.. so it's a actually but mids.
if i turn off Protection i have very nice puch but lot off distortion..
If i turn Protecion ON, while Always Clip-100, sensitivity-0, Do not reduce-100, smoothe-0, peek der.-0... it still removes punch, and there is less distotion.
Smoothe does not have impact on punch almost at all.
Bojcha: Previous to BETA095 or so you would always set bass clipping to around 0.71 to protect the highs. Now if you set this slider to 100% as you describe, that creates a lot of distortion in the highs - filtering that out removes a lot of high frequency content, hence punch.

For an honest comparison, I think you need to compare the sound of the original protection mechanism ("old style protection") against the new one. NO protection at all of course retains more punch - but the distortion is also horrible.

Is punch lost mainly due to reduced transitents (very short highs) or due to longer ones? What I could also do is NOT filter out the distortion if sounds are very short - actually I would guess that you won't even be able to hear that distortion very well, it's mainly noticeable in constant sounds such as 'S' sounds. I could probably easily create a filter that detects how audible distortion would be based on 'constant-ness' of the highs (I did that in the past for voice vibrations, and that always worked well).


To get rid of highs distortions, I would suggest setting the bass clipping no higher than 0.90 - above that the filtering mechanism does not seem to be strong enough (the amount of distortion without filtering at that setting is also pretty rediculous). That also drops the 'bass pumping' effect that occurs due to the reduction of other frequencies due to distortion removal a lot, and should hence also improve punch.

I really need new headphones.... :(
Author:  Bojcha [ Sun Aug 21, 2011 5:41 pm ]
Post subject:  Re: Stereo Tool 6.10
Highs are not big problem now.. larger problem is mids.. i still can hear some voice distortion.
i am trying to cover that with Phase rotator..
btw, do not reduce bass i have at 0.68 now, and sensitivity to 0.90...
Author:  hvz [ Sun Aug 21, 2011 5:44 pm ]
Post subject:  Re: Stereo Tool 6.10
Quote:
Highs are not big problem now.. larger problem is mids.. i still can hear some voice distortion.
i am trying to cover that with Phase rotator..
btw, do not reduce bass i have at 0.68 now, and sensitivity to 0.90...
Are they worse than - say - in BETA079 etc? If so I could restore the filter that drops the bass when they are detected - but I actually hope that that filter is not needed anymore. Have you tried setting extreme smoothing settings (10, 5%)?
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