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hvz
 Post subject: Re: Stereo Tool 6.10
PostPosted: Thu Mar 31, 2011 12:13 am 
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@ Brian

That definitely shouldn't happen (red if that bars are NOT completely filled - they do stay red for a while after being completely filled though). Will check.


Edit: Same behavior here as what eldoradofm reports: Red bars with eq switched off (also at default values); no more red as soon as I lower it just a bit.
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hvz
 Post subject: Re: Stereo Tool 6.10
PostPosted: Thu Mar 31, 2011 12:18 am 
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BETA620-021:
- First attempt to create a dynamics boost filter.

It doesn't work as well as I had hoped - basically only the bass gets a dynamics boost. It does sound better to me anyway (try 'Lady Gaga - Alejandro' for example, at default settings, or with slightly higher 'Boost strength').

The filter currently also causes some artifacts, I can get rid of them later (for now just don't set the 'Boost strength' slider too high). But first I'll just post this version to get some feedback.

New filter is placed in the same window as the declipper.


Notes from previous BETA (about declipper):
Quote:
Note that declipping uses a lot of CPU processing power (I'll make that configurable later).

The filter can be switched on or off at the right of the input level slider.

The 'maximum peak restore' slider does not work yet (dunny why, will check).

IMPORTANT: Set the 'clipping detection' level low enough such that ALL the clipped samples are recognized as being clipped (for a CD that's easy, 32767 should suffice, but for an MP3 you'll need to set it a bit - even upto 10%! - lower).

Hint: You can see that the declipping filter is working by comparing the input and output levels with NO other processing enabled.

IMPORTANT: Declipping can currently NOT be combined with non-phase linear highpass filtering!!!

Samples that are incorrectly seen as not-clipped (level set too high) can have a big effect on the audio.
Samples that are incorrectly seen as clipped (lever set too low) make things harder because basically Stereo Tool must treat them as if they are clipped at the selected level. So basically you add extra clipping before removing it.

Later I'll add some code for dynamic clipping detection. (Something with a histogram I guess).
Winamp DSP plugin: http://www.stereotool.com/download/dsp_ ... 20-021.exe
Stand alone version: http://www.stereotool.com/download/ster ... 20-021.exe
VST version: http://www.stereotool.com/download/vst_ ... 20-021.dll
VST version (No SSE2): http://www.stereotool.com/download/vst_ ... 20-021.dll
Command line version: http://www.stereotool.com/download/ster ... 20-021.exe
Linux command line version: http://www.stereotool.com/download/ster ... ETA620-021 NOT AVAILABLE
Linux GUI version: http://www.stereotool.com/download/ster ... ETA620-021 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.
- Finish declipping filter.
- Add highpass filter for stereo signal (will cause a lot of extra latency!)
- Update presets? (BASS_AGC etc.)
- Change version number 1 hour
- Release 1 hour
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Bojcha
 Post subject: Re: Stereo Tool 6.10
PostPosted: Thu Mar 31, 2011 12:38 am 
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Interesting filter ...
There is artifacts when lower frequency are present, but i am geting very punchy and nice sound, one of my test track finally sound more deeply at punch as original is... like bass is moved octave down?

Place for filter is more for before and/or after MB.. maybe

edit: settings was at, reset > bass samples at ~-20dB - I like that deep punch :)
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hvz
 Post subject: Re: Stereo Tool 6.10
PostPosted: Thu Mar 31, 2011 12:53 am 
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Quote:
Interesting filter ...
There is artifacts when lower frequency are present, but i am geting very punchy and nice sound, one of my test track finally sound more deeply at punch as original is... like bass is moved octave down?

Place for filter is more for before and/or after MB.. maybe

edit: settings was at, reset > bass samples at ~-20dB - I like that deep punch :)
Hm, I was already thinking about moving it to after the AGC (after Multiband might indeed also be a good idea). Reason: There the input level would be far more constant.

Artifacts at higher frequencies can easily be removed (the filter has no effect on high frequencies, except for those artifacts, so I can just copy the highs from the input signal of the filter).
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eldoradofm
 Post subject: Re: Stereo Tool 6.10
PostPosted: Thu Mar 31, 2011 1:28 am 

Joined: Sun May 02, 2010 11:26 pm
Posts: 547
New settings are not visible in the stand alone version.
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hvz
 Post subject: Re: Stereo Tool 6.10
PostPosted: Thu Mar 31, 2011 1:52 am 
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Quote:
New settings are not visible in the stand alone version.
Oops :oops: - fixed and re-uploaded.
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hvz
 Post subject: Re: Stereo Tool 6.10
PostPosted: Thu Mar 31, 2011 2:05 am 
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Quote:
Quote:
Interesting filter ...
There is artifacts when lower frequency are present, but i am geting very punchy and nice sound, one of my test track finally sound more deeply at punch as original is... like bass is moved octave down?

Place for filter is more for before and/or after MB.. maybe

edit: settings was at, reset > bass samples at ~-20dB - I like that deep punch :)
Hm, I was already thinking about moving it to after the AGC (after Multiband might indeed also be a good idea). Reason: There the input level would be far more constant.
Hm, just thinking a bit more here. I could also try to make this filter respond more to compressed audio and less to normal audio. That could be done where the filter is placed right now. But actually, somehow I also need to do something with the highs... (I can by removing or reducing the filtering, but that leads to badly deformed highs.)
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hvz
 Post subject: Re: Stereo Tool 6.10
PostPosted: Thu Mar 31, 2011 2:32 am 
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Hm, ignoring the (quite horrible) distortion that this filter causes without filtering, it really gives the audio (all frequencies) a big dynamics boost. If I can manage to get rid of the distortion this should work extremely well!

(With headphones it sounds horrible, with one set of somewhat lesser quality cheaper speakers it sounds great). And the effect seems less "exaggerated" than that of the 'Magic' .WAV file that someone posted here.

Now I only need to find a way to get rid of the distortion :roll:


Edit: Ah, I think I've got it! I can _probably_ using this filter determine how much each frequency band must be boosted. Then smooth out the effect to get rid of the distortion, and voila!
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eldoradofm
 Post subject: Re: Stereo Tool 6.10
PostPosted: Thu Mar 31, 2011 2:56 am 

Joined: Sun May 02, 2010 11:26 pm
Posts: 547
It boosts the bass quite nicely. Indeed a lot of distortion with some songs.
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Takeda
 Post subject: Re: Stereo Tool 6.10
PostPosted: Fri Apr 01, 2011 2:13 am 

Joined: Mon May 24, 2010 9:43 pm
Posts: 18
This sound is processed by stereo tool, go to stereo tool for information -----> please add a female voice :oops:
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