Stereo Tool

DSP BETA751-025: http://www.stereotool.com/download/dsp_ ... 51-025.exe
Win32 stand alone: http://www.stereotool.com/download/ster ... 51-025.exe
Multiple changes (Bass Boost has a Drive slider, DIFF works for all prelimiter modes, Delossifier optimized).
I found crashes when switching to several presets, will look into that tomorrow.

]Hi Hans. I am testing the prelimiter and what i found is that if i just play a sine wave it limits it and it modulates it with some strange tone.... And that gets worse as i increase the number of bands.

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Very proud user of Stereo Tool since 2010. Thanks Hans.

My radio station
http://amradio.ddns.net

Prelimiter output is raw unfiltered sound... If you also hear it in the actual output there's a problem, otherwise you can safely ignore this.

This is not the raw unfiltered output...this is the output of ST

_________________
Very proud user of Stereo Tool since 2010. Thanks Hans.

My radio station
http://amradio.ddns.net

I have just rewritten the built-in presets code so that I can from now on easily add, remove or reorder presets. (Until now that was an annoying, tedious and error prone job). Also cleaned up nearly all presets that were using the old multiband compressor.

Declipper --> input --> lowest tilt slider is behaving akward when holding and sliding (could be there for a while, I just noticed)

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The Power of Sound

''Music is a moral law. It gives soul to the universe, wings to the mind, flight to the imagination, and charm and gaiety to life and to everything.'' - Plato

Kernel streaming output on Winamp stalls at end of music track when use with Stereo Tool.

Is that new in these beta's? I know there are some really weird bugs in Winamp input and output plugins that get triggered by certain timing effects... This could very well be one of those, but I would expect it to be also there with older (and released) versions.

Update: Winamp stalling with the kernel output is now fixed.
Simply set the "send to winamp" to silence.

BETA751-026
I have finally build all the different versions (VST plugin, command line version etc.)!

Windows 32 bit:
Windows stand alone: http://www.stereotool.com/download/ster ... 51-026.exe
Winamp/DSP plugin: http://www.stereotool.com/download/dsp_ ... 51-026.exe
VST plugin: http://www.stereotool.com/download/vst_ ... 51-026.dll
Command line: http://www.stereotool.com/download/ster ... 51-026.exe

Windows 32 bit no SSE2 (if anyone still has a Pentium 3 somewhere, can you test one of these to see if it still works? thanks!)
Windows stand alone: http://www.stereotool.com/download/ster ... 51-026.exe
Winamp/DSP plugin: http://www.stereotool.com/download/dsp_ ... 51-026.exe
VST plugin: http://www.stereotool.com/download/vst_ ... 51-026.dll

Perfect Declipper builds with new compiler, also removed some code that wasn't used:
Winamp/DSP plugin: http://www.stereotool.com/download/dsp_ ... 51-026.exe
VST plugin: http://www.stereotool.com/download/vst_ ... 51-026.dll


CHANGES:
- Disable Delossifier at lower latencies
- Optimize Delossifier
- Add Bass Boost reference level (boost at input, reduction at output) "Drive"
- Make DIFF work for all pre-limiter settings.
- Assigned unique ID's to built-in presets, to make it much easier to add, remove and shuffle presets (which used to be tedious and error prone).
- Exception when switching between built-in or external presets. To be tested with DEBUG version. Hm... not reproduced anymore.
- Added warning about that it's better to use ASIO, plus that if you don't you need to set the sample rate correctly in Windows.


TO DO:
- Different lowpass frequency for Stream than for FM/AM.
- Simplify tilt correction
- Declipper --> input --> lowest tilt slider is behaving akward when holding and sliding (could be there for a while, I just noticed) --> See it here as well but I don't see any reason in the code. Not important enough to spend a lot of time on... So I'll keep it as it is for now.
- Exception in: GUI Event Handler (Exception 0xc0000005 at address 0xf5f5b8, read/write=1, r/w location=0x0). Offset-info: 0xeb0c84. Reported by Fario and 2Sense. Unfortunately the crash occurs in a function called __intel_memset and I cannot see where it's called from. (Well, the GUI obviously...)
- Add presets, and remove a lot of older ones
- Add separate volume and tilt for 1st and 2nd MPX output.
- Improve web interface further. -> Postpone, can be done together with hardware GUI development. (very soon, among others preset selection)

OLDER:
- Pre-limiter behavior redesigned. Sliders added and visual added.
- Audio drop in FM output with Tilt correction enabled (which was caused by the clipper!) solved.
Latency 4096 + 1024 bands in pre-limiter sounds good again.
- Fix RDS clock on 64 bit
- Add visual to show Pre-limiter effect.
- Check Pre-limiter to see if I can improve how it works, or make it more logical / easier to setup.
- Stokkemask in strict mode (checkboxes for 'skip smoothing' and 'sloppy smoothing' disabled) is *slightly* less strict than before, but the sound quality is improved a lot (effect on the audio of the Stokkemask filter is reduced by more than half).
- You can set Strictness (CPU) to 3 instead of 2 as maximum. 2 should normally be sufficient though, and it's the default setting.
Stokkemask CPU load optimized for all settings.
Bug in Stokkemask and Multipath Clipper fixed that makes it work better.
- Added faster processing paths for SSE3, SSE4.1/2, AXV and AVX2.
- Optimized Stokkemask filter (so far only in Faster mode, will optimize the other modes later). Filtering is slightly less good, although I don't see it in the measurement results.
- Changed band steepness minimum values for multiband from 6 to 3 dB/octave. (Ooh. I hope i changed MB and not ND...).
- Added a bunch of new presets. Some need to be updated again. And the Jeroen Platenkamp HvZ mod version is currently identical to the original.
- Web interface drawing of equalizer fixed
- Crash when loading some presets fixed
- Bug fix: Prelimiter acted up at certain latency settings.
- Web interface dragging fixed.
- Bug that caused sliders and top menu to stop working fixed.
- Calculation of FM MPX left/right peaks was wrong when using Composite LIMITER, fixed.
- Made left/right display green (with above 100% yellow) as suggested by mpex2006km.
- Improved web interface a lot more ("1000" is gone, more displays are working, right part of display auto-scales to device width)
- Fix MPX Power calculator
- Fix resetting of tilt calibration when loading a preset
- Add volume meters which show > 100% modulation for IBC demo
- Bug fix: Single-channel file in plugin version caused crashes when using the composite clipper.
- Compressor/limiters: Moved limiter before compressor. This slows down the attack speed when limiting occurs, which gives a more stable sound.
- Improved web interface. (Not yet finished).
- There's some weird sound audible when you enable 'DIFFERENCE' mode. Even if nothing happens. This means that the audio is somehow damaged. It's worse at lower latency settings. FIXED
- Make highs clipping level configurable. DONE
- Fix composite clipper mode. DONE
- See a few posts up. I've now added 2 sliders that can be used to reduce the effect when there's not clearly a tone present. Tones only reduces the effect when there isn't a single tone that clearly sticks out - basically it checks how loud the strongest band is vs. the total of all bands, and adjusts the effect based on the result of that calculation. Since there are almost always also other tones present, setting this too high will even reduce tones that do clearly stick out. Tones threshold can be used to turn the filter off completely if there isn't a single tone that clearly sticks out (it makes the slope of the Tones only effect steeper).
- Changed some things back to how they were in version 005 - Bojcha reported (and I confirmed) some weird artifacts in version 006. If you enable METHOD2 you get the 006 behavior, that's for my own tests and I will remove METHOD2 later.
- Added Smother filter. The higher you set it, the more it will ONLY affect the loudest sounds. If you have multiple loud tones (for example a bass and a loud voice), setting this very high might cause only one of the two to be effected - setting it very low will affect everything though.
- Added multiband pre-limiter/phase optimizer to the Advanced Clipper.
- Trying a different multiband limiter in the Advanced Clipper. This time without phase optimizer. I'm very curious which version you guys prefer!