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 Post subject: Lemur : which expression to match volume faders ?
PostPosted: Wed Jul 11, 2012 2:42 pm 

Joined: Fri May 02, 2003 6:38 am
Posts: 1294
Location: France
I'm trying to make a fader module in Lemur ipad that matches the values as dB in Live. For now, I've tried these formulas : 20*(log(x*127/108))*6/3.241 but it doesn't work. Could a math lover Live user or someone at Ableton give me the right formula ?

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 Post subject: Re: Lemur : which expression to match volume faders ?
PostPosted: Wed Jul 11, 2012 3:00 pm 

Joined: Tue Feb 20, 2007 11:10 pm
Posts: 9998
the volume faders are a touchy subject.. I've tried to figure out ..
even posted on the m4l forum..
the curve is still a mystery to me..

I'm new to Lemur.. but I think I saw somthing about it in the Liine/MutantTalk forums..
don't have time right now to look for it..

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 Post subject: Re: Lemur : which expression to match volume faders ?
PostPosted: Wed Jul 11, 2012 3:55 pm 

Joined: Fri May 02, 2003 6:38 am
Posts: 1294
Location: France
This formula comes from the liine / lemur techniques forum... I think the Ableton programmers could share some infos about this.

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Last edited by madlab on Wed Jul 11, 2012 7:03 pm, edited 1 time in total.

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 Post subject: Re: Lemur : which expression to match volume faders ?
PostPosted: Wed Jul 11, 2012 4:52 pm 

Joined: Tue Feb 20, 2007 11:10 pm
Posts: 9998
madlab wrote:
This formula coes from the liine / lemur techniques forum... I think the Ableton programmers could share some infos about this.

yes..they could... but somehow they don't..
this kindof stuff should be in the m4l documentation..
a simple task like adding 4dB to the current volume via m4l is impossible otherwise..

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 Post subject: Re: Lemur : which expression to match volume faders ?
PostPosted: Fri Jul 13, 2012 10:45 am 

Joined: Fri May 02, 2003 6:38 am
Posts: 1294
Location: France
3dot, is taht the topic you thought about ? http://liine.net/forum/viewtopic.php?f= ... 1698#p1698.
Maybe the array technique would be the closest if Abletonians don't want to share some lights about this (what I couldn't understand btw).

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Madlab sound unit :/: sounds FX, objects, guitar and electronics :/: end_of_transmission


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 Post subject: Re: Lemur : which expression to match volume faders ?
PostPosted: Fri Jul 13, 2012 10:52 am 

Joined: Tue Feb 20, 2007 11:10 pm
Posts: 9998
yep ...that's the one..

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 Post subject: Re: Lemur : which expression to match volume faders ?
PostPosted: Sun Jul 15, 2012 9:04 am 

Joined: Fri May 02, 2003 6:38 am
Posts: 1294
Location: France
Someone at Ableton please, on that really important matter...

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Madlab sound unit :/: sounds FX, objects, guitar and electronics :/: end_of_transmission


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 Post subject: Re: Lemur : which expression to match volume faders ?
PostPosted: Tue Jul 17, 2012 10:55 am 

Joined: Fri May 02, 2003 6:38 am
Posts: 1294
Location: France
I sent an email to the support team but didn't receive any answer till now. I have to say I would be really deceived not to be considered for this essential request.

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Madlab sound unit :/: sounds FX, objects, guitar and electronics :/: end_of_transmission


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