Stereo Tool
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Stereo Tool 6.10
https://forums.stereotool.com/viewtopic.php?t=3065		 Page 90 of 213
Author:  VFR750A45 [ Thu Jul 07, 2011 10:00 pm ]
Post subject:  Re: Stereo Tool 6.10
Ok Hanz,

Probably the Natural Dynamics cause artfacts and the sound is less powerfull.

The Pmux is nearly around 7.4 db vs v 6.10 around 8db.
Mesured with a Pira75

Do you update the presets in final version 6.20 ?
Like extreme sound with declipper activated ?

We search a powerfull sound like omnia or orban for a new fm station , opening at the end of october.

Very good soft stereotool !
Congratulation

Thanks
Luc
Author:  VFR750A45 [ Thu Jul 07, 2011 10:07 pm ]
Post subject:  Re: Stereo Tool 6.10
Quote:
Quote:
Quote:
The current clipper is doing some things that it shouldn't. Most importantly I think I have to completely get rid of the Clean/Punch filter, and make sure that the punch is maintained using other methods. The Clean/Punch filter - when not set to Clean - causes the Loudness filter to behave partly as a compressor, which is bad, and it makes artifacts such as voice vibrations, damaged 'S' sounds and volume drops caused by loud highs much worse. I have some new ideas which I'll test soon.
Exactly .. every word!
Yeah :-) And also important: The simpler I make my clipper, the easier it will be to convert it to a composite clipper (actually that should take about a day once I have my L/R clipper ready using my new ideas).

Currently I'm doing a lot of things simultaneously:
- Lowering frequencies that cause issues (for example, loud bass if 'S' sounds are present, or loud 'S' sounds if they push other frequencies down too much, ...)
- Clipping
- Filtering
- Increasing punch

Well this is just getting far too complex. So I want to split it into simple steps. When that's done, composite clipping should be only slightly more difficult than normal clipping, and it won't cause too much CPU load (it would if I would do it in my current code).
This is a very good idea !
Good luck
Author:  hvz [ Thu Jul 07, 2011 10:12 pm ]
Post subject:  Re: Stereo Tool 6.10
Quote:
The Pmux is nearly around 7.4 db vs v 6.10 around 8db.
Mesured with a Pira75
What is Pmux? I tried Googling it but I couldn't find anything useful...
Author:  VFR750A45 [ Thu Jul 07, 2011 10:25 pm ]
Post subject:  Re: Stereo Tool 6.10
Quote:
Quote:
The Pmux is nearly around 7.4 db vs v 6.10 around 8db.
Mesured with a Pira75
What is Pmux? I tried Googling it but I couldn't find anything useful...
Multiplex Power
The Power of sound

Like this : http://www.radiotechnique.com/la-puissa ... ex.php#mpx
Author:  hvz [ Thu Jul 07, 2011 10:58 pm ]
Post subject:  Re: Stereo Tool 6.10
Ah, ok. I can imagine 2 reasons why the volume is different:
1. BIG changes in the AGC. The new one is far more constant.
2. "Advanced Highs Protection" in 6.20. I must say that I'm not too happy about it - it works better than what I had before but I really want something much better to allow louder and cleaner highs even if lots of other sounds are present.
Author:  VFR750A45 [ Thu Jul 07, 2011 11:01 pm ]
Post subject:  Re: Stereo Tool 6.10
mmm ok this is an explainaition.
the presets is the same at 6.10 probably is not adapted to 6.20 ?
Author:  Bojcha [ Thu Jul 07, 2011 11:52 pm ]
Post subject:  Re: Stereo Tool 6.10
Quote:
We search a powerfull sound like omnia or orban for a new fm station , opening at the end of october
What genre?
Author:  camclone [ Thu Jul 07, 2011 11:57 pm ]
Post subject:  Re: Stereo Tool 6.10
Wow!

My pira75 spectrum analyzer shows 7 dbr of sound " power "
( at 75 khz of course! )

most radiostations have 2 or 3 dbr of power only!

stereotool can make 7 for sure !!
Author:  JesseG [ Fri Jul 08, 2011 12:51 am ]
Post subject:  Re: Stereo Tool 6.10
Quote:
I can use Natural Dynamics (just barely) if I disable loudness, but I lose all the benefits of the current loudness section...
You kinda lose most of the benefits of Natural Dynamics by having the Loudness doing things a normal limiter wouldn't be sufficient at too.

Personally I would go for the Natural Dynamics, leave it unslammed, and make the listeners happy.

Quote:
Omnia 9 can only reach 140% under certain circumstances
My "New York" preset for Omnia.9 was hitting 165% with the OLD clipper. With the new clipper, even the reference preset is hitting 175%. =) But yes, keep in mind that it's true this can't happen constantly (but constantly enough to make a MAJOR audible difference). And also keep in mind that this is a momentary peak and is heavily biased toward the treble, where it's needed most. This doesn't mean it's 75+ percent louder, not even. What it does translate to is much cleaner sounding highs, and crisper sounding transients.
Author:  Brian [ Fri Jul 08, 2011 8:00 am ]
Post subject:  Re: Stereo Tool 6.10
Quote:
@Brian: I did measurements with Task Manager and VTune (a program that checks which code is executed in the system ~ 10,000 times per second). And with those two I could change a single line of code in Stereo Tool (with no clear relation to performance), which caused 20% jumps in Task Manager but showed no difference at all in VTune.
All done on an Intel system, with a very high likelihood that your version of IPP penalizes AMD processors when you link it.

I've been sick all day today, since I posted the previous response, but I did look through some VTune documentation and noticed that Intel even mentions using Windows Perfmon. I'm also seeing references to Counter Monitor having higher overhead than Event Based Sampling, but Event Based Sampling having a :!: Caution that it may not provide 100% reliable information depending on certain circumstances (http://software.intel.com/sites/product ... ction.html)

Further, there appears to be a difference between "Lightweight Hotspots" and "Hotspots", with the latter looking only at your specific application and not system-wide performance. Task Manager, and what I always break out when this subject is brought up, Process Explorer, would be looking at system-wide.

http://software.intel.com/sites/product ... me_running

If I ever manage to get a job, I am going to buy a license for your product, even though I'm only a home user, so with that in mind, can you spare any money to get an AMD system and AMD's CodeAnalyst and look at the non-Intel-biased metrics, or do you think that wouldn't be beneficial due to staying with the known AMD-penalizing IPP?
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