Stereo Tool
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Stereo Tool 6.10
https://forums.stereotool.com/viewtopic.php?t=3065
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Author:  eldoradofm [ Tue Sep 27, 2011 5:26 pm ]
Post subject:  Re: Stereo Tool 6.10

Quote:
Ow wait. You hear it on the WINAMP output?!
Yes
Quote:
When you move around a stand alone Stereo Tool window?
I maximize the stand alone Stereo Tool window and then click multiband window and move that over the stereo tool window.
Quote:
Then it must have something to do with the CPU load or the video card. Hm, that could actually be it - could it be that your video card is sharing some interrupts with the sound card?
I use an onboard videocard with IRQ16, hmm the Trace Alpha also has IRQ16.
The juli@ uses IRQ19.
So it seems that that's the problem then. I hope i can change 1 of them.
But it's strange that breakaway runs fine.

Author:  hvz [ Tue Sep 27, 2011 5:32 pm ]
Post subject:  Re: Stereo Tool 6.10

Woeha! I just measured the performance of the Multiband section and compared it against version 6.10 - it's approx. 30% heavier now! That's WAY too much given the relatively small changes that I made (and in my measurement they were even switched off). I'll look into it.

Author:  eldoradofm [ Tue Sep 27, 2011 7:23 pm ]
Post subject:  Re: Stereo Tool 6.10

Ok i switched the cards so the Trace Alpha has IRQ19 and Display IRQ16 and Juli@ also IRQ16.
Using Trace Alpha for input i still have the same square wave / vertical lines issue. I see them in input display.

Author:  eldoradofm [ Tue Sep 27, 2011 7:53 pm ]
Post subject:  Re: Stereo Tool 6.10

Testing some more, problem seems to be Real-time priority. All other priorities are fine.

Author:  hvz [ Tue Sep 27, 2011 8:26 pm ]
Post subject:  Re: Stereo Tool 6.10

Then my guess is that the Marian driver runs at a too low priority, so ST screen updates get priority over audio input handling......

Author:  eldoradofm [ Tue Sep 27, 2011 8:28 pm ]
Post subject:  Re: Stereo Tool 6.10

Can you set screen updates for stereo tool to lower priority then?
B.t.w. if i set breakaway to realtime on both processes it still works fine.

Author:  hvz [ Tue Sep 27, 2011 8:36 pm ]
Post subject:  Re: Stereo Tool 6.10

Been doing some performance tests on my laptop while waiting in my car. I couldnt complete the measurement because my battery went dead, but beta 107 was just as fast as 6.10 while 110 is a lot slower. More later.

Author:  hvz [ Tue Sep 27, 2011 8:41 pm ]
Post subject:  Re: Stereo Tool 6.10

Eldoradofm: Windows doesnt allow that. Thread priorities are 0-31; 0-15 for normal processes, 16-31 for realtime processes. There is another solution but that will take much more time to implement. For now just dont use realtime... And I think this is actually a driver error.

But it is weird that the audio processing itself does not cause problems - that should be much heavier on the coy than screen updates. Unless its the total hoi issue that counts.

Do you have a dual cote system? Ficould be that it's the fact that both cores are busy.

Author:  Bojcha [ Tue Sep 27, 2011 8:51 pm ]
Post subject:  Re: Stereo Tool 6.10

OK.. i am doing similar tests with marian and ST.

So far..
I can reproduce same problem but i can't hear it! Meaning. I am using 3-4 output and watching RTAnalyzer on same output with ST reseted!
I can't hear it but i can see it in RTAnalyzer. Also I can record it (very same 3-4 Output) and when i record it i CAN hear it.
Very strange!
Also it's true that with BBP that does not happen. So MarianTrace and StereoTool just do not like each other somehow.

Author:  hvz [ Tue Sep 27, 2011 9:15 pm ]
Post subject:  Re: Stereo Tool 6.10

Performance dropped in BETA109. BETA108 is still fast.
Quote:
BETA109 (Sept 1):
- Added "pre-ringing filtering artifacts filter" - a filter that removes (reduces) artifacts caused by the pre-ringing filter when the phase linear HPF is used. Note: I would describe these as 'rrr rrr rrr' sounds like what DJ_DOGGY talked about, but I only heard them when some filters are enabled. Anyway, they are nearly gone now. The impact on the pre-ringing itself seems to be extremely small.
Removing this one isn't really an option I think.

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