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PostPosted: Thu Feb 21, 2013 9:34 am 
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I see in beta 44 big difference in the levels with the settings of previous beta 43 .... I don`t know from what is this caused, but is very big difference, more saturation of the sound.Also bass "boost" appears, not considered with the Pre-emphasis...
May be this is caused by the AGC (because Hans said he look/change something in beta44) .But something is changed in a way that is not that good in my opinion.

And finally i again say that levels in the MB must be "Drived" and then leveled by the threshold level that must be analogous to the "AGC target level" option but for every single band in the MB. This is the right thing for the MB.
I think that now "Thres" is not operating like it should.


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PostPosted: Thu Feb 21, 2013 12:29 pm 
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ok.. played sweep 0-20khz with default 2-band default AGC settings (louder female disabled).
...
Is that ok ?
Top waveform looks similar to what I see - and the transition is MUCH smoother than with the old version.
But I don't understand the waveform at the bottom - the level should be low all the time, you didn't normalize it or anything? I'm not getting a similar output.

I've tried it with the old version as well, and I do see some difference: In the old version the level is not completely (but almost) constant, in the new version it's completely constant, the level is roughly the same though (a bit higher in the old version at the start, maybe 1 dB).


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PostPosted: Thu Feb 21, 2013 1:19 pm 
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I see in beta 44 big difference in the levels with the settings of previous beta 43 .... I don`t know from what is this caused, but is very big difference, more saturation of the sound.Also bass "boost" appears, not considered with the Pre-emphasis...
May be this is caused by the AGC (because Hans said he look/change something in beta44) .But something is changed in a way that is not that good in my opinion.
With the AGC update I see that the output level is about 0.4 dB softer than before - this is caused by an issue in the old version that's resolved now. But this may depend on settings. Can you send me the settings that you are using?
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And finally i again say that levels in the MB must be "Drived" and then leveled by the threshold level that must be analogous to the "AGC target level" option but for every single band in the MB. This is the right thing for the MB.
I think that now "Thres" is not operating like it should.
They do work the same was as for the AGC - it you use feedforward mode and a ratio of 1000:1. The problem is that if you use them in feedback mode or with a lower ratio, the output level doesn't have to be anywhere near the target level. And that's also what makes it difficult to do what you said. Regardless of that, you should still be able to get the sound out of it that you want, but it may take a bit more effort.


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PostPosted: Thu Feb 21, 2013 1:38 pm 
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I gave the new volume burst protection a try and I'm impressed!
Actually I just realized that with a small change it can work much better than it does now - I should only allow it to kick in if the 'fast attack' signal just had a huge volume drop. And then leave the release speeds at the normal values.

Why? Well, currently I calculate 2 amplification levels:
- Normal, using the configured attack and release times
- Fast, using very fast attack and (should be I think) normal release times
Because the Fast mode results in lower volume levels due to the faster attack, I multiply it by the Level difference value. And finally I take the minimum of the two.

Now this is all great, but if you play a track with loud kicks and not much else (the start of Abba - One of Us for example), because the kicks are short it can easily kick the Fast mode level far below the normal level, and keep doing that for every kick. Which means that for every kick the fast filter will kick in, instead of just for the first few kicks.

So what I think I need to add is some detection that ONLY allows this protection when the fast mode signal is dropped a lot, rapidly. That way, the first kick of 'Abba - One of Us' would still be protected, but future kicks would not be detected anymore. Of course the protection should not immediately be turned off again (you want it to protect the 2nd kick as well), but after a while it should be deactivated until a new big volume drop occurs.


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PostPosted: Thu Feb 21, 2013 2:30 pm 
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I see now...
Will make some more test and different modes of MB to see
I understand that if i use max ratio and Feedforward mode ( which must mean Feedback sliders to be at 0% , right?) it acts like agc target level .. ok, will test it also


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PostPosted: Thu Feb 21, 2013 4:12 pm 
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I would first go back and try to fix MB xovers. For example 2 or 3 band xover is very bad.


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PostPosted: Thu Feb 21, 2013 4:37 pm 
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I would first go back and try to fix MB xovers. For example 2 or 3 band xover is very bad.
You mean if you use 2 or 3 bands? Or the first 2 or 3 bands? And bad means what exactly - top not flat enough?


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PostPosted: Thu Feb 21, 2013 5:30 pm 
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Well, whatever 2 or 3 bands mode or any other mode. 2 band mode is just worst.


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PostPosted: Thu Feb 21, 2013 5:44 pm 
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Well, whatever 2 or 3 bands mode or any other mode. 2 band mode is just worst.
But - what is wrong with them? If you use steep slopes you'll get more audio out of it at crossover frequencies when you run a sweep, is that what you mean? Or is there something else?


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PostPosted: Thu Feb 21, 2013 7:09 pm 
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Ok, new info
Bojcha is right hat there is something wrong in the first 3 bands ... my bands are 40 Hz , 90Hz, 400 Hz..
So when i put a sine of 40 Hz in the input of program ... New MB enabled... "Blop Blop" effect comes from the MB (in the old MB this effect is not that much).
So blop blop comes from the next band ?!!? my next band is 90Hz ... Hans must check what is wrong there.Looks like there is some wave crossing with these bands ! I can send or upload some video with the test to look at it . At the output the wave is some kind of distorted.. Did i make a video to show ?


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