Stereo Tool
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Stereo Tool 7.41 BETA
https://forums.stereotool.com/viewtopic.php?t=5456		 Page 9 of 29
Author:  hvz [ Thu Jan 23, 2014 1:07 am ]
Post subject:  Re: Stereo Tool 7.41 BETA
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I'm wondering if I have discovered a new memory issue with Stereo Tool, or if it is something else on my machine.

With 7.40, I was able to run the CPU load at 100%. With the new betas, the result is a tremendous amount of stuttering from the soundcard, and pauses when listening to the stream.
I don't know, but the CPU load *should* be lower with the new version, if you use the same settings. (Power Bass and Power Highs are new but don't use much CPU power, but can you try what happens if you turn them off?). I am indeed curious what hardware you have.
Hans,

I think he means the CPU (quality) setting in the SETUP screen. 0-100
Yes - but since the CPU load of 7.41(beta) versions should be lower than that of version 7.40, it should also work at the same setting.
Author:  hvz [ Thu Jan 23, 2014 10:27 am ]
Post subject:  Re: Stereo Tool 7.41 BETA
Quote:
I am testing the Boost Highs BUT you have to make it separate code, i mean to work separate from bass. We can aply one or both and when i press difference its on both bass and highs


Super Highs with Super bass on Differences enabled is very strange. Sometimes no highs when adjusting slope on highs. something is wrong on code Hans. Check it out and try it for your self.
You can hear no highs if the highs are not boosted. So that doesn't have to be an error. I didn't see anything weird...
Author:  Chris [ Thu Jan 23, 2014 10:59 am ]
Post subject:  Re: Stereo Tool 7.41 BETA
Maybe BUT, if you enable diffrences on Highs enabled on Bass as well, make it separate.
Author:  phantomfm [ Thu Jan 23, 2014 11:39 am ]
Post subject:  Re: Stereo Tool 7.41 BETA
Quote:
Quote:
Quote:
I'm wondering if I have discovered a new memory issue with Stereo Tool, or if it is something else on my machine.

With 7.40, I was able to run the CPU load at 100%. With the new betas, the result is a tremendous amount of stuttering from the soundcard, and pauses when listening to the stream.

I don't know, but the CPU load *should* be lower with the new version, if you use the same settings. (Power Bass and Power Highs are new but don't use much CPU power, but can you try what happens if you turn them off?). I am indeed curious what hardware you have.
Hans,

I think he means the CPU (quality) setting in the SETUP screen. 0-100
Yes - but since the CPU load of 7.41(beta) versions should be lower than that of version 7.40, it should also work at the same setting.
I Know! this should be working since acual CPU load has dropped, however i found out this is probably a buffer issue.
As i mentioned, somtimes my input buffer is hackling ?? :?: and i found out that resetting the soundcard several times fixes the problem for me :lol:
I get the feeling that different ST versions causes ASIO buffers to react different, because i get different issues on each version...strange....most of the time changing latency settings will fix the problem, i try to get the lowest possible latency since i like onair monitoring during program presentation maybe this has something to do with it... :mrgreen:

Jeroen.
Author:  tipexfm [ Thu Jan 23, 2014 12:55 pm ]
Post subject:  Re: Stereo Tool 7.41 BETA
The low latency output doesn't work. Am I the only one with this issue?? Thx
Author:  DJ-DOGGY [ Thu Jan 23, 2014 2:01 pm ]
Post subject:  Re: Stereo Tool 7.41 BETA
No, may be you are the only one who use it :D

Confirm not working
Author:  hvz [ Thu Jan 23, 2014 2:26 pm ]
Post subject:  Re: Stereo Tool 7.41 BETA
Ah, I still had to test that. I have redesigned a lot of code which might affect the low latency path. Will fix it (I need to fix 2 things: use the standard code also for low latency, and put a lot of threading code together to make it behave more predictable.)
Author:  hvz [ Thu Jan 23, 2014 6:27 pm ]
Post subject:  Re: Stereo Tool 7.41 BETA
This '1 thread' instead of a whole bunch thing seems to be a lot easier than I expected, I might have something tonight already :)

Edit: I forgot "half" of my laptop power cable (yes, it broke in 2, I put the two parts together again but yesterday it fell apart again - I guess I should order a new one) so I haven't been able to finish things yesterday. :(

Edit: Now building new stand alone version with this fix. I'm curious whether this improves anything.
Author:  hvz [ Fri Jan 24, 2014 3:03 pm ]
Post subject:  Re: Stereo Tool 7.41 BETA
Windows stand alone: http://www.stereotool.com/download/ster ... 41-019.exe
Winamp DSP: ----://www.stereotool.com/download/dsp_stereo_ ... 41-019.exe
VST32: ----://www.stereotool.com/download/vst_stereo_ ... 41-019.dll

Warning: Make sure that Low Latency Monitoring is DISABLED - or this version will probably crash. Will look into that next.

Changes:
- Fixed FOX TV Carbon Coder R128 normalization issue Waiting for feedback.
- Moved a lot of threads into a single thread. Might improve hiccups that some people have reported.

Older changes:
- Added Power Highs (it's in the same window as Power Bass).
- Moved Power Bass and Power Highs to before the wideband AGC to improve volume level consistency.
- Sudden fast rise of bass or highs is limited, new slider 'Release boost' added. I'm not really sure yet if this is ok; if there's a loud high or low sound it can push the band down a lot, and it comes down slower than before. If needed I can add something to allow it to come back faster after a short spike. Waiting for feedback first though.
- Sidechain checkbox removed (without that doesn't exist anymore).
Attempt #2: Redesigned Simple Clipper. Reduced CPU load.
- Reduced the memory usage
- Fixed most of the Stereo Image artifacts!!! "Deprecated" is removed from the sliders that were marked with it. See (*) for a cool new possibility!
- Removed some more unnecessary steps (AZIMUTH 2x, Stereo Boost 2x). 10 remaining.
Fixed 'Post filter for DC offset' problem.
52. Check CPU load. Start with checking if there's anything left that uses the 'unnecessary steps'. Sevdah Web preset: Data still gets converted 58 times... I think I need to do this one first, it should have some effect on the CPU load. 28 removed - next convert the 2 IIR filters so they can be optimized and the merge/split around it can be removed. I'm not measuring any effect from this though (but it makes the code simpler which is also good)
53. Noise Gate/Stereo Boost: Pre-calculate 1-cos() and sqrt() values.
55. Check MemoryPool behavior for cache improvements -> No effect measured, and might make behavior less constant.
56. Check if we can go in opposite direction for each next step to improve cache.
57. Check if lazy reverse FFT is an option. -> No, difficult and gain does not even seem to be measurable.
58. Created a separate class that performs the processing chain. Currently the same code is repeated twice (once for normal processing, once for low latency processing) - which means that a lot of code is duplicated and it's difficult to add extra chains. Most, not all, of that code is now moved elsewhere.

NEXT VERSION:
(although the low latency chain is not yet modified, but that should now be relatively easy)
Author:  DJ-DOGGY [ Fri Jan 24, 2014 3:16 pm ]
Post subject:  Re: Stereo Tool 7.41 BETA
i think there is some improvement of non linear CPU loading . little but ..
Now it goes from 19-20 to 24-25% which is difference of about 4-5%. When GUI down the load is with a bit good linearity 19-21%. That is an impromvement !
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