Stereo Tool

Confirmed. I hear clicks in the sound only when i use ingonre high freq

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

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Stokkemask does not work good even at quality/strictness 3, unless you set "true peek" in composite clipper to atleast 8. And i would recommend minimum 4 not 3.
This is with true peek = 4

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Bojcha , thank you for remind me for RF spectrum

Here is what some body said "Signal is very small down at least...."
Here is what it looks like in the RF spectrum. I mean problem with L+R down side slope ( from now i will call it "the oversignal")
And here is what it causes.

1. I'm now trying (with difficulty) to recreate the clicking / drop-outs I heard - I think it was occasional drops of audio (if I recall correctly, ignore high frequencies wasn't ticked but I can't be sure now).
I see that mpex2006km has confirmed with ignore high frequencies.

2. The exception has occurred only once when restarting - not again since.

3. I agree with Bojcha - Stokkemask is very sloppy and exceeds the mask easily even with quality/strictness at 3.

4. Small issue under FM Transmitter, Output Signal - initially buttons shows 'Generate FM even if no outpute.' - when you hover over it, it changes to 'Generate FM even if no output'.

5. Noted the feedback on the preset changing oddities and mpx meter.

Will keep playing with latest beta. Thanks for the hard work towards the improvements!

Found it - it's caused by small overshoots (< 1%) which are cut off. I'll make a fix tonight.

I see a very small difference at around -110 dB. I also see that the RDS signal is cleaner than before. This is when *not* using the composite clipper, and I still have to fine-tune that situation, so for now I'm assuming that my clipper is slightly less effective for some reason (in fact that would be something to look into...) which causes Hard Limit to have to do more - and that can cause this type of problem. On the other hand, I also see that the output level is 0.07 dB higher which is a good thing. In total I would say that - even with this issue - the new clipper is better than the old one.

Yes, i guess it is... but.
With Strictness from 6 to 20 and all the Cpu load, only for a 0.07 db? It`s not worth. So it`s a good reason to fine tune this , even with correction let`s say in this option (I`m not saying to be this way, but it`s a good idea) . Let`s say that Stricthess of 6 allows this. Then make it on 7 not to allow "hard Limit" to do anything as you very accurate called it. I think it`s fair .
Yeah, you can reduce (erase) the "Hard Limit" work at Strictness 6 ( that will be the best in this situation) but you decide...

And thanks for reminding me for Hard Limit . You must look into it too , because it causes something very similar to what causes the "Ignore freqs" - jumping of the noise floor but with less jumping refresh speed ( it looks like that). You can test it. Load my settings and enable the Hard Limit.

@DJ_DOGGY: That 0.07 dB difference was between 7.70 and the latest beta with much fewer steps.

Stereo Tool 7.71 BETA016

Windows 32 bit:
Windows stand alone: http://www.stereotool.com/download/ster ... 71-016.exe
Winamp DSP: http://www.stereotool.com/download/dsp_ ... 71-016.exe
Windows 32 bit VST: http://www.stereotool.com/download/vst_ ... 71-016.dll

CHANGES:
- Another bug in latest beta - ST doesn't remember FM settings - presets from the fm list start up with stereo and rds encoding off
- Fix MPX display sample rate issue
- Fix Stokkemask in Leif's mode with Quality < 3
- Fixed problem with click sounds (reported by DJ_DOGGY). Reduced output level by 1% - you can safely increase modulation by 1% if you're using an output that's affected by this (should only be FM signal inside a plugin). If you're using the stand alone version, make sure to set the output level to the sound card no higher than 99% (-0.1 dB).

OLD CHANGES:
- Fix downsampling and Quality slider problems: Lower Quality setting
- Attempt to reduce effect on volume of using Leif's clipping method.
- Fix DJ Doggy's reported errors (19 kHz, junk around tones).
- Ignore frequencies above a specific frequency -> Should lower TOTAL CPU load by another 10-20% (now fully implemented except at lower Quality settings)
- Fixed the lowpass bug that was introduced in 009. Although it has probably always been there! As a side effect, the output is also slightly louder (about 0.02 dB) with no negative effects.
- Fixed distortion introduced in 009/010. Extra highs are still there though! See new 'Sparkling highs' section under Advanced Clipper -> Sound
- Fix optimizations
- Fix code #warnings
- Improved highs filtering in Clipper (both Composite and Normal); sound has more brilliance and suffers much less from ducking on loud sounds.
- Fix bug: NAN's can occur at certain input sample rates (40960 Hz among others)
- Fixed downsampling/resampling issues.
- Made several changes to the Clipper that affect the sound! Sound should now be more open en brighter (but it might have more distortion in some cases, I hope not though).
- CPU: Added 'Ignore high frequencies above'.
- Big Composite Clipper CPU load improvement: Added a new slider ('Oversampling Quality' or something like that); CPU load reduction is HUGE and effect on peak control (for values above 4) seems very small.
- Solved a number of warnings that I added in the last few days
- Some small optimizations
- New Highs Gap Protection improved, now similar in behavior to the old one. I had to add 1 extra step (slightly higher CPU load).
- Fixed problems in 771-004. Some optimizations are disabled - I need to fix that.
- Fix CPU measurement for high loads (jumps to 95% for unknown reason). -> Showing real average instead of median now. Median in dark red.
- Difference in measured CPU load is bigger than expected after CPU load measurement update - check why - DONE, is indeed big! Separate slider added to show both processing and total CPU usage.
- CPU: Clipper: Reduced default number of Bass Clipper steps from 4 to 1
- CPU: Clipper: Implemented Leif's mirrorring method for Stokkemask and optimized steps using Omnia interface, much fewer steps for same result.
- Added option to add a text in the title bar to easily recognize multiple instances.
- EXCEPTION OCCURRED IN HttpServer: Got unknown widget ID.
- CPU: Clipper: Highs gap protection: Use 1 step for non-FM.
- Check if COMMON_STATIC still improves performance, if not remove it -> Does not, removed.
- Redesigned parameter classes and moved everything around for integration with other products.
- Remove Stokkemask mode for non-composite FM clipper (it's probably not working correctly and more heavy than the composite clipper)
- Fixed small bug in Composite clipper FM overhead level compensation calculation. Might make the same setting very marginally louder (less than 0.05 dB)
- Fix crash reported in previous post
- Improved CPU load measurement (small part of code wasn't included, it is now).
- CPU: Composite clipper: Optimize Stokkemask: Skipping outer parts of window
- CPU: Composite clipper: Optimize Stokkemask: Fixed 'Skip smoothing' mode to be compliant, all other modes removed.
- CPU: Composite clipper: Optimize Highs Gap Protection (trick from Leif Claesson that he uses in the Omnia.9 - nearly no CPU load needed anymore!)
- CPU: Added some #pragma's to make compiler generate more efficient code
- RDS: Added some character conversions (Euro -> E, ` -> '). (not yet tested)
- GUI: Allow drawing scopes in half-height to have more headroom above and below.

TO FIX 7.71:
- Check new clipper highs
- Make Chain block (small size) based
- Remove "Take some shortcuts" under CPU, probably broken! And has not much effect anyway. -> Hm, no, must have been in use for the tests. Ugh... TEST to check what is better: ON (which will probably allow more sounds through) or OFF. -> Actually it does seem to work AND allow more highs through, but I don't know if that's a good thing - more tests needed!
- Synchronization is broken in 008 (was ok in 007)

TO DO 7.71:
- Turning "Bandpass" Highpass filter OFF doesn't really turn it off (!)
- VST multiple instances fails
- Make VST window bigger
- Fix Mac VST version (not recognized apparently)
- Fix Linux version (someone mentioned that it crashes after a few minutes, on Ubuntu 14.04)
- Add delay (in samples) for one of the two MPX channels to send audio to allow synchronization of 2 transmitters which use the same frequency. (John Markis)
- GUI integration for Multiband?
- Instability in compressor behavior [WesKeene, Bojcha]

TODO:
- Noise learning Micha
- Change default preset (it still uses Classic compressor etc!)
- EQ with 'standard' sliders.
- Make BS412-like graph for levels
- Add 'warm' noise before clipper (requested by Andrew Palmquist, might help with PPM as well)
- CPU: Clipper: Optimize Advanced Bass Distortion Protection

TO DO WITH LEIF:
- Clipper issues Leif / Wolf Stahl (probably the same thing) - Should be fixed now.

Downloads not there....