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 Post subject: Re: Stereo Tool 6.10
PostPosted: Mon Sep 05, 2011 4:41 am 
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Joined: Mon Mar 17, 2008 1:40 am
Posts: 11521
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Bass is causing this to loudness filter... so white noise is ok.
Looks like the 2 channels are not handled exactly the same... So there can be small differences between left and right.
-> Update: Yup, it's Improved Bass Distortion Protection and Very Deep Bass Distortion Protection.
Fixable?
Probably. But I think I'll postpone this one till after 6.20 - it has been there for years and I don't think it can cause any issues.


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 Post subject: Re: Stereo Tool 6.10
PostPosted: Mon Sep 05, 2011 5:08 pm 
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Joined: Tue Sep 28, 2010 10:56 pm
Posts: 326
Location: Usa
I shall repeat.... The only thing i am jealus of Orban is Stereo Wide... can we do something on ST???

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 Post subject: Re: Stereo Tool 6.10
PostPosted: Mon Sep 05, 2011 5:21 pm 

Joined: Mon Aug 11, 2008 3:30 am
Posts: 163
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I shall repeat.... The only thing i am jealus of Orban is Stereo Wide... can we do something on ST???
What about Orban's multiband???? :D


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 Post subject: Re: Stereo Tool 6.10
PostPosted: Mon Sep 05, 2011 10:11 pm 
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Joined: Tue Mar 17, 2009 2:56 pm
Posts: 4269
Hans, separate 'remove remaining peeks' for band3 in AGC ?


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 Post subject: Re: Stereo Tool 6.10
PostPosted: Mon Sep 05, 2011 10:14 pm 

Joined: Wed Oct 20, 2010 10:04 pm
Posts: 201
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I shall repeat.... The only thing i am jealus of Orban is Stereo Wide... can we do something on ST???
Heyyyyyyyyyyyyyyy,, YOU ARE WRONG!!!

stereotool's stereo enhancers ARE FAR AWAY SMARTER THAN ORBAN ANDDD AND AND AND OMNIA !! EVEN OMNIA 9 !

ask Hans why :)

especialy when the stereo enhancer makes.... stereo limiting :) ( for FM handovers between stereo and mono reasons.. for happy car radio listeners :)

...but but but YOU must know how to tweak it ,
:roll: :roll: :roll: :roll: :roll:


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 Post subject: Re: Stereo Tool 6.10
PostPosted: Mon Sep 05, 2011 11:09 pm 

Joined: Sun May 02, 2010 11:26 pm
Posts: 547
@Hans, I'm testing DC problem now on transmitter. And on first test it seems that that 10 Hz bump is causing the biggest problems. First test doesn't seem to give much difference between Post filter ON or post filter OFF with the phase linear filter. And when i look at the graph the difference around that 10 Hz bump is almost none.
But i do see an improvement with the never phase linear filter with post filter on or off.

So Is there some way to reduce that 10 Hz bump more?
I'll do some more tests and post the results later.


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 Post subject: Re: Stereo Tool 6.10
PostPosted: Mon Sep 05, 2011 11:32 pm 

Joined: Wed Aug 31, 2011 1:25 am
Posts: 105
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it seems that that 10 Hz bump is causing the biggest problems.
Just out of personal curiosity... what practical use is the ability to pass frequencies that low? From what I understand of FM transmitters, only the relatively new ones care for freqs below 30 or so anyway, not to mention the sound system you'd need to reproduce them.

Do the new commercial processors pass from DC to light? Seems a tall order... but maybe not.


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 Post subject: Re: Stereo Tool 6.10
PostPosted: Mon Sep 05, 2011 11:37 pm 

Joined: Sun May 02, 2010 11:26 pm
Posts: 547
Yes there's not much use for 10 Hz indeed. But when it's not filtered out good enough you can see it as an increase in deviation. I have HPF on 35 Hz but as you can see in my earlier graphs there's still something not filtered out properly.
Maybe we need a non-phase linear post filter for it?


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 Post subject: Re: Stereo Tool 6.10
PostPosted: Tue Sep 06, 2011 12:05 am 
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Joined: Wed Nov 19, 2008 7:44 pm
Posts: 1171
Location: Bulgaria
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Yes there's not much use for 10 Hz indeed. But when it's not filtered out good enough you can see it as an increase in deviation. I have HPF on 35 Hz but as you can see in my earlier graphs there's still something not filtered out properly.
Maybe we need a non-phase linear post filter for it?
I don`t know the reason for use the PHASE LINEAR filter . It`s weaker .. but non phase linear is the strongest and works fine . So can anyone tell me the reason for use it ! What is the advance ?


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 Post subject: Re: Stereo Tool 6.10
PostPosted: Tue Sep 06, 2011 12:18 am 
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Joined: Mon Mar 17, 2008 1:40 am
Posts: 11521
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@Hans, I'm testing DC problem now on transmitter. And on first test it seems that that 10 Hz bump is causing the biggest problems. First test doesn't seem to give much difference between Post filter ON or post filter OFF with the phase linear filter. And when i look at the graph the difference around that 10 Hz bump is almost none.
But i do see an improvement with the never phase linear filter with post filter on or off.

So Is there some way to reduce that 10 Hz bump more?
I'll do some more tests and post the results later.
How big are the spikes that you're getting? (I can see how big the biggest 10 Hz spikes are, around 4%, but I think - and hope - that what comes out of the sound card won't be THAT bad.)

Since 10 Hz is very very low, I can probably create a different type of filter to remove it (because you cannot hear such low frequencies anyway it should not matter that much what I do).


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