Stereo Tool

I think I've solved both issues (again... ). Will upload a new beta tonight.

Hans look at my last post on previous page .....

The spike at the filter freq -> Found & fixed.
Jumps in pilot and signal at Quality < 100% setting with Ignore frequencies above -> Found & fixed.
Higher noise floor -> probably a rounding error somewhere, also present in older versions, I'm not going to fix that now (level is below -110 dB).

Alright, will test when new beta is here

I post them to let you know for them . It`s fair , but you can fix them whatever you want. My task is to help and let you know.

I'm just hoping that I didn't overlook some other issue again - in fact, each time when I said I fixed it I did fix some bugs that were really causing problems. And I did now again...

Stereo Tool 7.71 BETA018

Windows 32 bit:
Windows stand alone: http://www.stereotool.com/download/ster ... 71-018.exe
Winamp DSP: http://www.stereotool.com/download/dsp_ ... 71-018.exe
Windows 32 bit VST: http://www.stereotool.com/download/vst_ ... 71-018.dll

CHANGES:
- Again, fixed noise level jumps and spike at Ignore Frequencies Above frequency.

OLD CHANGES:
- Clipper issues Leif / Wolf Stahl (probably the same thing) - Should be fixed now. - Waiting for reply Wolf- Check new clipper highs
- 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!
- Added lowpass filter after clipper in non-composite mode.
- 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).
- 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:
- Sometimes the top and bottom waveforms run at different speeds when Ignore Frequencies Above is enabled.
- Make Chain block (small size) based - Partially done
- Declipper display is broken. Even without Ignore Frequencies Above. Ok upto 100 ms. Also broken in 7.70!!! Only if samplerate > 48 kHz, and when switching between sizes, upto 100 ms everything is fine (even if no audio is playing so no refresh of the data occurs), so the bug is in the displaying code. -> Was a shift error, fixed.
- Synchronization is broken in 008 (was ok in 007) - Don't see it!

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)

TO DO 7.72:
- Add impulse response import function!!!
- 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

Yep i agree. Some bugs might couse the same problem. So yes you fixed alot of bugs.

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

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

Hans,
In the input waveformmonitor is a strange behavior of the declipper red line
Beta 018, dsp

It doesn't work if you use Ignore Frequencies Above.

Let me begin
Beta 18 - L+R slope issue is now FIXED , horray !
Ignore frequencies above spike is FIXED !
But at some certain frequencis , jumping noise floor is there . I see it`s presented on 18505 ( may be from 17650 to 18800 jumping is there ) . Exactly at 16000 there is jumping , but if i move above 16130, this jumping is gone . Looks like at some points there is a problem.
But this time many things are fixed . Slope of L+R is again the Perfect , please don`t mess it anymore

The other little issue remains is L-R pumps that appear if i feed with signal (for easy find , the signal is white noise) , but i`m sure it make it the same with music but the music must be mono. That`s why the easy way is white noise with 0 degrees phase difference between L and R.

So Hans, there is a big progress . Keep it up !
Look at the picture - see what is Fixed ( labeled with PERFECT!) and what is the pumping . It`s not presented without AC on ( not big deal but i know you can find it and fix it.