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Stereo Tool 6.10
https://forums.stereotool.com/viewtopic.php?t=3065		 Page 156 of 213
Author:  hvz [ Sun Aug 28, 2011 11:57 pm ]
Post subject:  Re: Stereo Tool 6.10
Quote:
Is it me or is something wrong with the Windows command line version? I've tried several from 101 to 096 and they all crash. I'm running Win7x64. I have an older beta (033) and that one seems to work okay.

Thanks!
I've added this to the TODO list, will check it soon.

Thanks for reporting it!
Author:  hvz [ Mon Aug 29, 2011 12:05 am ]
Post subject:  Re: Stereo Tool 6.10
Quote:
Declipper is on for higher versions but default off for versions 028 and 030. EDIT: so the test between 028 and 030 was with declipper off.
HPF is on 35 Hz Never phase linear Order 6.

When i connect output soundcard 1 to input soundcard 2 with all calibrated i have the following:
BETA620-028 = 100.4%
BETA620-030 = 101.6%

EDIT:
Measurements with the Pira analyzer:
Max Hold Beta620-028 = 75.1 kHz
Max Hold Beta620-030 = 77.5 kHz

EDIT:
Max Hold Beta620-079 = 76.0 kHz
Max Hold Beta620-105 = 79.1 kHz
Bojcha reported (in a PM) an issue with the non-phase linear high pass filter which is present since BETA080 (BETA079 was still ok), this one might be related to this DC offset issue. In BETA080 I made some changes to the 'processing window' shape which removed (or at least greatly reduced) the chopper-like sound, but it replaced that sound by a very low frequency tone. At the time (actually until right now) I didn't realize that a low frequency tone - which you cannot hear so until now I thought it was fine - is actually a DC offset.

I'll look into it further tomorrow. But I'm starting to get pretty sure that BETA080 must be the version where it started to go wrong.


*** EDIT ***: No, it's not BETA080 where I made that change. Looking now where I did.

*** EDIT #2 ***: The change was DEFINITELY present in BETA083. Now I really don't understand what's causing Bojcha's issue in 080 anymore... :-(


Anyway, this probably means that the DC issue is present since either BETA082 or BETA083. I'll look into it tomorrow evening.
Author:  eldoradofm [ Mon Aug 29, 2011 12:23 am ]
Post subject:  Re: Stereo Tool 6.10
Can you also explain the big difference between 28 and 30 ?
Author:  hvz [ Mon Aug 29, 2011 1:09 am ]
Post subject:  Re: Stereo Tool 6.10
Quote:
Can you also explain the big difference between 28 and 30 ?
Not really - given the changes that doesn't make much sense (you're not using non-phase linear highpass filtering, right?)
Author:  eldoradofm [ Mon Aug 29, 2011 1:11 am ]
Post subject:  Re: Stereo Tool 6.10
Quote:
Quote:
Can you also explain the big difference between 28 and 30 ?
Not really - given the changes that doesn't make much sense (you're not using non-phase linear highpass filtering, right?)
No, i was using non-phase linear highpass filtering order 6.
Author:  Bojcha [ Mon Aug 29, 2011 1:15 am ]
Post subject:  Re: Stereo Tool 6.10
HPF: This problem is from beta 80. Did not checked all betas but beta79=ok and beta80=not ok

I can record it (?) But i already sent you track where this is so noticable.
Author:  hvz [ Mon Aug 29, 2011 1:27 am ]
Post subject:  Re: Stereo Tool 6.10
Quote:
HPF: This problem is from beta 80. Did not checked all betas but beta79=ok and beta80=not ok

I can record it (?) But i already sent you track where this is so noticable.
Ok, so far I've only looked at the changes - and this one is not reported anywhere but it's marked green from BETA083. Anyway some bad things are happening with that HPF - and indeed only when I enable it. I didn't hear what you described but I did see and hear a bunch of other things. I'll check tomorrow if those other things also started in BETA080 - if so it's the same issue and fixing either will fix both.
Author:  Bojcha [ Mon Aug 29, 2011 1:35 am ]
Post subject:  Re: Stereo Tool 6.10
I have NEWS about HPF... Stay tuned ! :) this is crazy !

Few minutes ago i tryed to replicate what i sent to Hans as a problem. And i could not replicate it. :shock:
Only Never phase-linear HPF ON.
Then i loaded some web preset form file and bug is again there!
Next was strange! I presed RESET again, and turned on never phase-linear HPF ON only.
And BUG was there!!

Here's result.
http://www23.zippyshare.com/v/34662396/file.html

used ST Standalone beta104. Played from winamp with VAC. 48kHz - Normal output
Author:  hvz [ Mon Aug 29, 2011 2:00 am ]
Post subject:  Re: Stereo Tool 6.10
Hm, that might explain why I didn't hear anything! Will check you recording ASAP.


News here too: The change that I suspect of causing the increased DC content was in BETA082. So basically I expect that BETA081 has a much lower DC content than BETA082. It's getting way too late here now, so I'll continue with this tomorrow.
Author:  hvz [ Mon Aug 29, 2011 2:05 am ]
Post subject:  Re: Stereo Tool 6.10
Quote:
I have NEWS about HPF... Stay tuned ! :) this is crazy !

Few minutes ago i tryed to replicate what i sent to Hans as a problem. And i could not replicate it. :shock:
Only Never phase-linear HPF ON.
Then i loaded some web preset form file and bug is again there!
Next was strange! I presed RESET again, and turned on never phase-linear HPF ON only.
And BUG was there!!

Here's result.
http://www23.zippyshare.com/v/34662396/file.html

used ST Standalone beta104. Played from winamp with VAC. 48kHz - Normal output
Hm? That's ONLY HPF on?! So the volume drops about by half and the punch is gone? Or should I ignore the volume etc?
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