Stereo Tool
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Stereo Tool 6.10
https://forums.stereotool.com/viewtopic.php?t=3065
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Author:  eldoradofm [ Wed Jun 01, 2011 10:32 am ]
Post subject:  Re: Stereo Tool 6.10

@Hans if not too much time please change up speed (decay) and down speed divider (attack) in ms.
Now it's almost impossible too see the real values set in MB. More then half off the slider displays just .00000 to .00001

Author:  eldoradofm [ Wed Jun 01, 2011 10:56 am ]
Post subject:  Re: Stereo Tool 6.10

Quote:
Any difference?
Yes i can't say that i like it with the dynamics on. Listen 2:22 and up it sounds a bit distorted and wavy.

Author:  hvz [ Wed Jun 01, 2011 12:30 pm ]
Post subject:  Re: Stereo Tool 6.10

BETA051:
- More picky declipper (see new 'only declip if tilt detected' checkbox).

From the previous beta (still valid):
The CPU load is also pretty high because I'm calculating 32 different tilt levels to find the best match (so automatic tilt detection works, but it needs serious optimization).

New slider: "Declipping margin" - if you set this to 75%, everything above 75% of the maximum level is considered to be potentially clipped.

Changed slider: "Never consider samples to be clipped if they are lower than:" - rule out soft sounds, whatever they look like, they are not clipped.



Winamp DSP plugin: http://www.stereotool.com/download/dsp_ ... 20-051.exe
Stand alone version: http://www.stereotool.com/download/ster ... 20-051.exe
VST version: http://www.stereotool.com/download/vst_ ... 20-051.dll
VST version (No SSE2): http://www.stereotool.com/download/vst_ ... 20-051.dll
Command line version: http://www.stereotool.com/download/ster ... 20-051.exe
Linux command line version: http://www.stereotool.com/download/ster ... ETA620-051 NOT AVAILABLE
Linux GUI version: http://www.stereotool.com/download/ster ... ETA620-051 NOT AVAILABLE

TODO:
- Fix loading changed multiband frequencies
- Add buffer and filter for SCA output (SCA1 ok, SCA2 ok)
- Finish AGC improvement - make mono value configurable (replace checkbox by slider) 1 hour --> NO, not needed - anything else needed? -> NO
- Fix Punch
- Check what to do with new filters (such as bass AGC) - keep them, remove them, change them? --> KEEP
- Save new BASS_AGC setting in VST mode
- Loudness: Annoying cracking sound in bass. Slightly present in 5.00, worse in 6.00, maybe even worse in 6.10. Only when bass is too loud. Much worse than in Final Limiter (at same input level!) - so this clearly indicates a bug. Most likely cause: The filter that was added to remove bass artifacts....... :shock: - No, it's the louder bass. But it can be fixed by changing some settings. Default settings updated, and behavior for 'not Very strict' improved. Also Deep bass boost and Very deep bass protection are enabled for latency 512 now.
- Fix crash at program close
- Fix VST plugin version (does not run)
- Dynamically drop 'Allow louder highs, even if it causes vibrations' to 0 when bass filter suspects noticeable voice vibrations. 1-2 hours
- Reduce Loudness CPU load days?
- Check and remove static variables
- Finish new de-essing filter (check what to do with the settings, remove at least some!) 1 day
- Convert Multiband input to MONO, then use arrays [2][4096] --> should give speedup. - FAILED
- RDS issue reported here: viewtopic.php?f=15&t=3703&p=11524#p11524
- Always oversample clipping (configurable)
- Natural Dynamics: Fix or remove transient boost
- Natural Dynamics: Smooth out different bands more to reduce low-bitrate-MP3-like sounds.
- Natural Dynamics: Add expected + strength slider per band
- Declipping filter: Change detection at lower input levels.
- Finish declipping filter (clipping level detection + level reduction in dB). 1. Figure out why removal of unwanted frequencies causes flat lines at high quality setting with small overlap. This causes distortion, with this fixed repairs are MUCH better. 2. Implement MP3 correction, automatically scale down when this deteriorates the sound.
- Update presets? (BASS_AGC etc.) 1 day
- Finish blind interface
- Add AGC start level
- "Test Right Channel" in "FM Transmitter Calibration" does not work since v6.10 (standalone) (bojcha)
- Channels L/R swap in stand alone version when changing filtering/quality (?) (eldoradofm)
- Move pre-emphasis to end of processing 1 day
- Change version number 1 hour
- Release 1 hour
- Add lowpass filter for stereo signal (will cause a lot of extra latency!) - it might be possible to avoid this latency using a Hilbert transform
- Add smarter clipping detection. Maybe something much simpler suffices: Current clipping detection with threshold + flat line detection

Author:  hvz [ Wed Jun 01, 2011 12:31 pm ]
Post subject:  Re: Stereo Tool 6.10

Quote:
Ok.. test ONE:
I cannot listen until tonight... So I cannot respond yet...

Author:  eldoradofm [ Wed Jun 01, 2011 2:38 pm ]
Post subject:  Re: Stereo Tool 6.10

Quote:
Yes please add AGC START level and a configurable HOLD level for when the music suddenly drops, so the AGC holds it's current position.
And when the music stays below this hold level a configurable TIME to go slowly back to the AGC START level.
Ok i'm sorry, i see there's already Gating level for AGC. Could you also add gating to multiband then?

Author:  Bojcha [ Wed Jun 01, 2011 3:05 pm ]
Post subject:  Re: Stereo Tool 6.10

Quote:
Could you also add gating to multiband then?
Last when i ask same question, remained unanswered.

Author:  hvz [ Wed Jun 01, 2011 3:14 pm ]
Post subject:  Re: Stereo Tool 6.10

Quote:
Quote:
Could you also add gating to multiband then?
Last when i ask same question, remained unanswered.
Hm sorry. I tried to some time ago, but it's not possible the way Multiband currently works.

In the future (this summer? I took an 8 week :shock: holiday to spend more time on Stereo Tool) I want to create a new Multiband filter that's based on a series of AGC's, because the AGC does a much better job at keeping the level constant without causing pumping than the filters in Multiband (basically just 10 singleband filters).

That way I can also get rid of clipping (not needed with the 'remove remaining peaks' functionality in the AGC), which in turn gives me the opportunity to change the number and content of frequency bands.

Author:  eldoradofm [ Wed Jun 01, 2011 3:41 pm ]
Post subject:  Re: Stereo Tool 6.10

Will the new MB then also have ratio settings per band and units in ms?

Author:  Chris [ Wed Jun 01, 2011 5:06 pm ]
Post subject:  Re: Stereo Tool 6.10

@Bojcha The problem was from the Exciter.! I solve it!
@Hans New Betas are highly Cpu utilazitation :( over 50% sometimes.... I know you already know it.!

Author:  eldoradofm [ Wed Jun 01, 2011 5:09 pm ]
Post subject:  Re: Stereo Tool 6.10

Quote:
@Bojcha The problem was from the Exciter.! I solve it!
:) ;)

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