Stereo Tool

Ok, I've checked what's happening. Now there are 2 things and I need to know which of the two you hear!

1. The singleband compressor for some reason creates a crackle at some places. It happens in a few spots in the track that you sent me, and the crackles are very brief. I can't really say that I hear them, but I see them in the spectrum (they are kinda masked by the onset of the piano tone).

2. There is some vibrating effect if I subtract the outputs. It's very soft compared to the total level, but it's constantly present. It's also present without voice protection, but it gets a bit worse when I enable it. I will check now (I have an idea) if I can find the cause.

3. Finally there's a crackle at startup. -> Ow, seems to be caused by bandpass filter. Hm... Checking now... --> Solved, was caused by Ignore high frequencies

7.85 BETA027

Windows 32 bit:
Windows stand alone: http://www.stereotool.com/download/ster ... 85-027.exe
Winamp DSP: http://www.stereotool.com/download/dsp_ ... 85-027.exe
Windows VST 32 bit: http://www.stereotool.com/download/vst_ ... 85-027.dll

Main change is that I added K filter for Polar Stereo for OIRT FM band.

CHANGED:
- Polar stereo: K filter added, but output is not strictly clipped anymore. Waiting for feedback.
- Add AM test tone: Sawtooth with pause at 0, asymmetrical. LPF needed?
- Fixed crackle at startup caused by Ignore high frequencies (even if it was disabled!)
- Loading old preset from before Analog mode was added apparently loads in Analog mode! -> Works now, just no idea why??

OLD CHANGES:
- Exciter: Crash should be fixed.
- Exciter: Sometimes you see darker bars in the spectrum, changing the overlap back and forth removes those, so somehow some levels aren't always calculated when a setting is changed.
- Fixed crash when closing
- Exciter: Moved to separate page, for now called Absolute Highs.
- Exciter: Added GUI element to show Absolute Highs effect.
- Exciter: Broken at latency 512
- GUI: Fixed hangups caused by tooltips.
- GUI: Remove dots in changed settings for some buttons on top of the screen.
- Exciter: Made frequency range configurable!!! (Old default numbers were 8000-9000 Hz)
- Blog post pre-processing, MP3 and declipping
- GUI: Added tooltips!
- Added exciter (rest of list removed)
- Added (not yet fully ok) Polar Stereo support for OIRT FM stations.
- Error (crash) on some systems should be solved
- Show something in settings that have been changed (for example a dot next to the name of the setting).
- Add license check function: extern "C" bool stereoTool_IsLicenseValid(gStereoTool* st_instance);
- Make scope skinnable
- Bug: i found one malfunction in the BS412 Section: If your switch off the FM Option and leave the BS412 Limiter in On-Position the Advanced Clipper only works in a reduced way: You can´t change the Clipper drive even if you pull the handle. The BS412 Limiter is greyed out instead so maybe someone doesn´t find the failure. If You switch the BS412 to off everything works fine again! Just a small detail, but maybe someone will have problems… -> I think I have fixed it (but there are a lot of different combinations of settings that can impact the result, I hope I haven't missed any). The next version shouldn't have this problem anymore, also, when BS412 is used I have now disabled the Advanced Clipper Drive slider.
I've been busy hiding a lot more deprecated features (if they are set to their default value). This should make the GUI a bit simpler. Stuff that's now hidden (still there and still functional if you really want to use it):
- "Bass AGC (Old)" panel
- "Classic Multiband Compressor" panel
- "Classic Singleband" panel
- "Pre-limiter" panel (in Advanced Clipper)
- "Leif's clipper efficiency modification" checkbox
- "Composite clipping Strictness (CPU)" checkbox
- Phase rotation: ""At start of processing" checkbox
- AGC "Compatibility & behavior" header
- All Singleband and Multiband "Compressor type" (Analog/Digital) pull-downs
- Multiband and Natural Dynamics "Compatibility mode (bad)" for Flat Frequency Response checkbox
- "Bass protection (Deprecated)" header in Advanced Clipper -> Bass
- "Highs gap protection: *" in Advanced Clipper -> Highs
- "Smooth slope" in Advanced Clipper -> Distortion
- "Upsampled highs clipping (useless)" in Advanced Clipper -> Distortion
- Stokkemask: "Force Stokkemask even if not using Composite Clipping (bad for audio)"
- BS412: ""De-basser non-ITU.1770 compatibility mode (bad)"
- Right clicking now restores default again, mid or double right clicking restores last loaded preset (or startup) value.
Bug: If you use FM and Normal output, with separately processed audio for streaming for Normal output, and for FM output enable pre-emphasis but *not* pre-emphasize output, then Normal output is not processed separately!
- What is the pink line in the BS412 display? Maybe remove it. http://i.imgur.com/70mWvqp.png -> Ah no, it's the adjustment of the compressor thresholds. Needs to be added to Help page.
- BS412 has VERY narrow jump on de-basser from 240 to 250 Hz. (Jump of multiple dB's). -> No, brown line jumps but actual output is smooth, so no problem.
- BS412 bass filter doesn't use ITU1770 as it should but some weird other shape that goes up to about 250 Hz.
- Need to support 2 default values and a RESET TO LAST LOADED VALUE reset option.
- Hide not selected deprecated stuff - partially working!
- Move Copyright stuff etc. also to command line version (maybe just copy it?)

TODO:
- Voice protection in classic MB is broken. Check what changed. (Code should not have changed at all). - Hm, more has changed. Check in which version! -> Waiting for reply to question
- MB: Make Overview window for new Multiband! For main settings.
- MB: Add voice volume protection, don't allow mid bands to drop below surrounding (to some extent), protectes voices and it might help to replicate the sound of certain other processors
- Exciter: Try to improve tone behavior (should also reduce whole area around a spike I think - maybe configurable?)
- Exciter: Improve further, and make it configurable.
- Add Polar stereo viewtopic.php?f=16&t=6233&p=33031#p33031
- MP3?
- Try adding phase delay compensation
- O skin
- Also show tooltips for blocks of parameters.
- Continue with finding parameters to hide

I think, its probably more towards the second effect. To me it just sounds like slight clipping/overcompression distortions (which you might mean with vibrating effect).

this question

What do you mean what polar stereo how it works, what benefits have a sound working ?

This latest beta, crashes when you change the Latency Samples to 4096!

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Sexy Girls in your city

Same here!

No crash here, but there was something wrong with Hard Limit in the last beta, so that might be causing it.

I have a little bug found:

By enableling Tooltips (Show Tooltips), the Tooltip Processing --> Absolute Highs does not work.
In 7.85 Beta 25 the Absolute Highs Tooltip is shown and works correctly.

I haven't written the help text for it yet. Now I'm just wondering what it can have shown in BETA025....

Hans don't worry,

It was my mistake. In 7.85 Beta 25 the Mouse Pointer was over Multiband 2