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PostPosted: Fri Jun 09, 2017 5:23 pm 

Joined: Sun Feb 03, 2013 2:39 pm
Posts: 333
What's new in ST 8.40:

  • Compressors: Added new, much more consistent RMS mode, old one renamed to Average.
  • Compressors: In new RMS mode, added a new feature "Big release acceleration" to release fast on big drops.
  • Compressors: Added channel linking. Allows leaving channels free but limit the maximum difference between them.
  • Clipper: Added "Prioritize loudness" mode.
  • Phase repair (Stereo Image): Improved pure anti-phase handling, now it can make pure anti-phase perfect again too.
  • RDS: The end of long words was cut off, now the word is split by default.
  • Generic plugin: Now a separate version is available that has audio support, but you can only run one instance.
  • Bug fix: AGC: Window did not work properly with smaller AGC block sizes. Caused clicks and volume jumps.
  • Bug fix: GUI: Unlicensed features were not listed in the bottom of the screen.
  • Bug fix: GUI: Drawable eq's were not displayed correctly (sometimes they got mixed up) in 8.34.
  • Bug workaround: Recovery mechanism added for NAN errors. If a NAN occurs, recovers directly afterwards.
  • Bug fix: Generic plugin buttons didn't work via API.
  • About box: Added more licenses for products used in Stereo Tool.
  • Fixed build warnings.
  • Added templates to Parameter and HTTP Server classes to use them in MicroMPX as well.
  • SST: Slightly updated drawable eq's in web interface.
  • SST: Added preset upload / download / delete.
  • WatchCat: Now uses Windows WMF decoder so all codecs installed in Windows are supported for input.
  • WatchCat: Bug fix: Error 374 at end of processing fixed.
  • WatchCat: Bug fix: Continuous renaming fixed.


So just to make sure I understand correctly:

  • Peak -> actual peak mode
  • RMS -> actual rms mode
  • RMS + 1.75 dB -> actual rms mode adjusted to match old pseudo-rms mode
  • Averaging -> old pseudo-rms mode
  • Averaging + 2.3 dB -> adjusted pseudo-rms, no idea what's that for

Quote:
Compressors: Added channel linking. Allows leaving channels free but limit the maximum difference between them.

So one sets channel separation to a high value and then limits the effect by a low value of channel linking, right?
With channel separation = 0% channel linking is off, too (channel linking should be greyed out in that case)?


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PostPosted: Fri Jun 09, 2017 6:52 pm 

Joined: Mon Aug 25, 2014 3:22 pm
Posts: 282
Yes, that is correct. The only point I would make is that channel separation and channel linking may not play together as you'd expect. If you're using channel linking, I would recommend separation just be at 100%.

Your explanation of the various modes in MB1 is spot on. RMS 1.75 exists to make it easier to convert various presets from old averaging mode to the new RMS mode, as the thresholds are 100% compatible (with squarewave input).

Now, here are some notes for you:

- Sinewaves are weighted differently between averaging mode and new RMS mode. That means you'll still probably need to do non-trivial adjustment to a preset to convert it.
- In Blue Steel's 5-band MB1, here's what I had to do to the thresholds in the new mode:
Band 1, lower by .5dB
Band 2, lower by .1dB
Band 3, raise by .1dB
Band 4, raise by .3dB
Band 5, raise by .6dB
- Obviously with different crossover configurations, those exact numbers will change. But hopefully that will give you a clue what direction to move things (and how far you might need to go) as you try to upgrade.

Enjoy the new release!


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PostPosted: Sat Jun 10, 2017 8:17 pm 
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Joined: Sun Mar 27, 2016 10:15 pm
Posts: 90
Prioritize loud sounds is a bigly improvement, also as others already noted said the new RMS, testing here an improved beautiful sound in 8.40

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Digital (no audio cards) on Rivendell, Jack Audio Connection, Liquidsoap, Icecast and Stereotool 9.37 in Virtualbox.


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PostPosted: Sun Jun 11, 2017 5:17 pm 

Joined: Mon Dec 12, 2011 5:02 pm
Posts: 123
Wes Keene - can you post your 3 presets here with new modifications?

Quote:
Yes, that is correct. The only point I would make is that channel separation and channel linking may not play together as you'd expect. If you're using channel linking, I would recommend separation just be at 100%.

Your explanation of the various modes in MB1 is spot on. RMS 1.75 exists to make it easier to convert various presets from old averaging mode to the new RMS mode, as the thresholds are 100% compatible (with squarewave input).

Now, here are some notes for you:

- Sinewaves are weighted differently between averaging mode and new RMS mode. That means you'll still probably need to do non-trivial adjustment to a preset to convert it.
- In Blue Steel's 5-band MB1, here's what I had to do to the thresholds in the new mode:
Band 1, lower by .5dB
Band 2, lower by .1dB
Band 3, raise by .1dB
Band 4, raise by .3dB
Band 5, raise by .6dB
- Obviously with different crossover configurations, those exact numbers will change. But hopefully that will give you a clue what direction to move things (and how far you might need to go) as you try to upgrade.

Enjoy the new release!


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PostPosted: Sun Jun 11, 2017 5:46 pm 

Joined: Mon Aug 25, 2014 3:22 pm
Posts: 282
Quote:
Wes Keene - can you post your 3 presets here with new modifications?
I am only going to update one of the three, and I'm not yet finished with it.


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PostPosted: Mon Jun 12, 2017 1:26 pm 
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Joined: Mon Mar 17, 2008 1:40 am
Posts: 11185
Now:
- MicroMPX: Remove some bitrates
- MicroMPX: Add VMware message?

Next:
- MicroMPX: Add OldSamples display
- Fred G email: Send reply


v140:
- Performance vs v120, should not be worse. Main difference appears to be in background stuff. Bypass is identical, higher Quality or lower Latency is smaller diff. So it must be the I/O. --> rand()
- Move piece of old Compressor code to speed up compilation and make the binary smaller.

Later:
- Add green skin
- RDS: Filter out empty frames.
- Check de-esser with NAN's
- Short RadioText? \n (Juan Exp. Skype call)
- AGC voice
- Classical music compressor: Clip input and smear out maximum of clipped amount over next samples -> Probably only for release!!!?
- HD alignment
- Make phase filter more visible? Maybe give it a separate heading under Restoration? (Only after improving it further).
- Add phase filter to LW version again?
- SST preset upload: Make sure they are ordered correctly. And how to put the new one up front?
- Wolf Stahl NAN error -> Still trying to reproduce...
- uMPX web interface

- Smarter stereo-to-mono conversion (only when needed)
- Hide inactive filters in bottom display (option)
- Disabling FM output makes Normal output pre-emphasized, even in SST.
- Test clipping
- Classical music compressor
- NAB
- WASAPI exclusive mode disables certain things, make it possible to disable it (David O'Nell)


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PostPosted: Wed Jun 14, 2017 1:47 am 

Joined: Fri Mar 29, 2013 3:04 pm
Posts: 105
Where is the phase filter now? On Stereo Image?


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PostPosted: Wed Jun 14, 2017 4:26 pm 
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Joined: Mon Mar 17, 2008 1:40 am
Posts: 11185
Quote:
Where is the phase filter now? On Stereo Image?
Yes. It's always been there, but now it works better. More importantly, at the last NAB another processing manufacturer was showing this as their big new thing. It's been in Stereo Tool since version 1.0 in 2004 (I made the filter in 2002 before I even made the first version of Stereo Tool) - and in fact it's the reason why I called it Stereo Tool in the first place! Now that other company is claiming that they are the only one who have something like this... Due to a bug that specific sample that they were using didn't come out as well as in their solution, and that's what I fixed now.

Anyway, I always figured that this filter wasn't too interesting. And it's old, it's actually one of the oldest pieces of code that are still in there. But it might be good to add it to the Repair section.


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PostPosted: Wed Jun 14, 2017 11:15 pm 

Joined: Fri Mar 29, 2013 3:04 pm
Posts: 105
Sorry for being a pain in the butt, it's just that I get confused because I don't see anything on Stereo Image that says "Phase Filter". :oops:

Image
(This is with extreme tweaker operating mode set.)

Would just turning this on with default settings be the "phase filter"?

(If I recall correctly, I also seem to remember the Azimuth correction be referred to as a kind of "phase filter" as well.)


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PostPosted: Thu Jun 15, 2017 12:09 am 
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Joined: Mon Mar 17, 2008 1:40 am
Posts: 11185
"Image phase amplifier max angle". Changing it WILL affect your stereo image (it does in the samples that I've heard for that other processor as well), I'll add something to reduce that effect soon. Also, you don't have to set it to 0 degrees, you can keep it a big higher and will keep most of the stereo and fix most of the phasing effect. I would suggest 90 degrees for now, IF you have audio with phasing problems. If you don't, then just don't use it. (For now anyway).


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