[Csnd] table for attack time

Date	2009-10-13 09:15
From	Stefan Thomas
Subject	[Csnd] table for attack time
	Dear community, I would like make a dependency between amplitude and notnum and attack-time. The louder, the shorter, the lower (the midi note number or the frequency) the longer. I guess, the best is, to do it with a table? Or do You have ohter ideas? And, how can I do it with a table? Thanks for any hint, Stefan

Date	2009-10-13 09:33
From	victor
Subject	[Csnd] Re: table for attack time
	Not necessarily. For instance iamp ampmidi 0dbfs ifreq cpsmidi iatt = 1/(iampifac1) + ifreqifac2 where ifac1 and ifac2 are factors that relate amplitude and frequency to attack time. You tune these to get the desired effect (for instance if ifac2 is 0, att is only related to amplitude) Victor ----- Original Message ----- From: Stefan Thomas To: csound@lists.bath.ac.uk Sent: Tuesday, October 13, 2009 9:15 AM Subject: [Csnd] table for attack time Dear community, I would like make a dependency between amplitude and notnum and attack-time. The louder, the shorter, the lower (the midi note number or the frequency) the longer. I guess, the best is, to do it with a table? Or do You have ohter ideas? And, how can I do it with a table? Thanks for any hint, Stefan

Date	2009-10-13 11:44
From	Victor Lazzarini
Subject	[Csnd] Re: Re: table for attack time
	Or also (and perhaps better): iatt = ifac1/iamp + ifreqifac2 On 13 Oct 2009, at 09:33, victor wrote: Not necessarily. For instance iamp ampmidi 0dbfs ifreq cpsmidi iatt = 1/(iampifac1) + ifreqifac2 where ifac1 and ifac2 are factors that relate amplitude and frequency to attack time. You tune these to get the desired effect (for instance if ifac2 is 0, att is only related to amplitude) Victor ----- Original Message ----- From:* Stefan Thomas To: csound@lists.bath.ac.uk Sent: Tuesday, October 13, 2009 9:15 AM Subject: [Csnd] table for attack time Dear community, I would like make a dependency between amplitude and notnum and attack-time. The louder, the shorter, the lower (the midi note number or the frequency) the longer. I guess, the best is, to do it with a table? Or do You have ohter ideas? And, how can I do it with a table? Thanks for any hint, Stefan

Date	2009-10-13 14:34
From	Aidan Collins
Subject	[Csnd] Re: Re: Re: table for attack time
	I think it should be pretty straight forward to do it with a table too. The ixmode parameter on the table or tablei opcode can be set to look for the index normalized between 0 and 1. So you could have a table with a line or exp. curve in your f table, and then just divide the incoming velocity and notenumber by the range you are expecting and use that as the normailized index. ivel / 127 for full range velocity, inotenum/88 for a full range keyboard. The easiest I think would be to have a separate look up relating to velocity and note number and then add them together to get your attack time. On Tue, Oct 13, 2009 at 6:44 AM, Victor Lazzarini wrote: > Or also (and perhaps better): > iatt = ifac1/iamp + ifreqifac2 > > On 13 Oct 2009, at 09:33, victor wrote: > > Not necessarily. For instance > > iamp ampmidi 0dbfs > ifreq cpsmidi > iatt = 1/(iampifac1) + ifreq*ifac2 > > where ifac1 and ifac2 are factors that relate amplitude and frequency > to attack time. You tune these to get the desired effect > (for instance if ifac2 is 0, att is only related to amplitude) > > Victor > > ----- Original Message ----- > From: Stefan Thomas > To: csound@lists.bath.ac.uk > Sent: Tuesday, October 13, 2009 9:15 AM > Subject: [Csnd] table for attack time > Dear community, > I would like make a dependency between amplitude and notnum and attack-time. > The louder, the shorter, the lower (the midi note number or the frequency) > the longer. > I guess, the best is, to do it with a table? > Or do You have ohter ideas? > And, how can I do it with a table? > Thanks for any hint, > Stefan > > Send bugs reports to this list. To unsubscribe, send email sympa@lists.bath.ac.uk with body "unsubscribe csound"