[Csnd] Re: RE: Initializing and scaling MIDI controlled values

Date	2009-07-07 18:13
From	"Art Hunkins"
Subject	[Csnd] Re: RE: Initializing and scaling MIDI controlled values
	Charles, Along with what Iain has said: I think also that (with respect to your first point) kdelay init 1 kdelay ctrl7 8,13,0,4 might work. Whichever way you go there still may be a problem: When you first move the slider, kdelay will immediately jump to the new value. As a result, I always specify either: 1) Presetting sliders to zero, or 2) Presetting sliders to initial values, all before starting Csound. Art Hunkins ----- Original Message ----- From: Iain McCurdy To: csound@lists.bath.ac.uk Sent: Tuesday, July 07, 2009 12:30 PM Subject: [Csnd] RE: Initializing and scaling MIDI controlled values Hi Charles, 1. You have to 'fool' Csound into thinking that a midi controller has been moved to an initial position, otherwise it assumes it is at its minimum position. 'initc7' will give Csound an initial position for that MIDI controller (0=min,1=max). For an initial value of '1' in your case, use: initc7 8,13,0.25 (1-0)/(4-0) in instrument 0 2. As I understand it, you want pan controller movement to the right to transpose up to +2 octaves, to the left to transpose to -2 octaves and in the centre no transposition. You can you 'oct' format to quickly implement this: ;init. set at midway position initc7 8,12,0.5 ;; ;transposition in octaves koct ctrl7 8,12,-2,2 ;convert to a frequency rescaling ratio kscale = cpsoct(8+koct)/cpsoct(8) Bye, Iain > Date: Tue, 7 Jul 2009 10:52:50 -0500 > From: chasgran@gmail.com > To: csound@lists.bath.ac.uk > Subject: [Csnd] Initializing and scaling MIDI controlled values > > I'm sure this info is out there, but if someone could help or point > that would be great! > > > 1. If I have a value like a time value for delay: > > kdelay ctrl7 8,13,0,4 > > do I need to use initc7 to create the initial value, or is there > something else I can use? I can't seem to do something like: > > kdelay = 1 > kdelay ctrl7 8,13,0,4 > > so that kdelay will stay at one until I move the knob. > > > 2. If I'm using a controller for pvscale to do realtime transposition > and I want my panpot which I'm controlling with > > kscale ctrl7 8,12,0.25,4. > > What I'd really like is to equally divide the controller with 2 > octaves on either side, so full left is 15va below, full right is 15va > above and center is 1. > > > Charles > > > Send bugs reports to this list. > To unsubscribe, send email sympa@lists.bath.ac.uk with body "unsubscribe csound" Windows Live™: Keep your life in sync. Check it out.

Date	2009-07-07 18:53
From	Iain McCurdy
Subject	[Csnd] RE: Re: RE: Initializing and scaling MIDI controlled values
	Hi Art (and Charles), Unfortunately this won't work and kdelay will adopt an initial value from the controller minimum (in this case zero) unless initc7 is set. I just checked it! kdelay will jump to it first received new value because it is unaware of the initial physical locations of the hardwares sliders. (even pointing your webcam in the direction of your MIDI controller doesnlt help.) I borrowed one of those Behringer controllers with motorised faders one time and Csound was able to 'tell' the Behringer what initial locations to set its sliders to. I can't say I ever used this feature other than as an experiment... Bye, Iain From: abhunkin@uncg.edu To: csound@lists.bath.ac.uk Date: Tue, 7 Jul 2009 13:13:07 -0400 Subject: [Csnd] Re: RE: Initializing and scaling MIDI controlled values Charles, Along with what Iain has said: I think also that (with respect to your first point) kdelay init 1 kdelay ctrl7 8,13,0,4 might work. Whichever way you go there still may be a problem: When you first move the slider, kdelay will immediately jump to the new value. As a result, I always specify either: 1) Presetting sliders to zero, or 2) Presetting sliders to initial values, all before starting Csound. Art Hunkins ----- Original Message ----- From: Iain McCurdy To: csound@lists.bath.ac.uk Sent: Tuesday, July 07, 2009 12:30 PM Subject: [Csnd] RE: Initializing and scaling MIDI controlled values Hi Charles, 1. You have to 'fool' Csound into thinking that a midi controller has been moved to an initial position, otherwise it assumes it is at its minimum position. 'initc7' will give Csound an initial position for that MIDI controller (0=min,1=max). For an initial value of '1' in your case, use: initc7 8,13,0.25 (1-0)/(4-0) in instrument 0 2. As I understand it, you want pan controller movement to the right to transpose up to +2 octaves, to the left to transpose to -2 octaves and in the centre no transposition. You can you 'oct' format to quickly implement this: ;init. set at midway position initc7 8,12,0.5 ;; ;transposition in octaves koct ctrl7 8,12,-2,2 ;convert to a frequency rescaling ratio kscale = cpsoct(8+koct)/cpsoct(8) Bye, Iain > Date: Tue, 7 Jul 2009 10:52:50 -0500 > From: chasgran@gmail.com > To: csound@lists.bath.ac.uk > Subject: [Csnd] Initializing and scaling MIDI controlled values > > I'm sure this info is out there, but if someone could help or point > that would be great! > > > 1. If I have a value like a time value for delay: > > kdelay ctrl7 8,13,0,4 > > do I need to use initc7 to create the initial value, or is there > something else I can use? I can't seem to do something like: > > kdelay = 1 > kdelay ctrl7 8,13,0,4 > > so that kdelay will stay at one until I move the knob. > > > 2. If I'm using a controller for pvscale to do realtime transposition > and I want my panpot which I'm controlling with > > kscale ctrl7 8,12,0.25,4. > > What I'd really like is to equally divide the controller with 2 > octaves on either side, so full left is 15va below, full right is 15va > above and center is 1. > > > Charles > > > Send bugs reports to this list. > To unsubscribe, send email sympa@lists.bath.ac.uk with body "unsubscribe csound" Windows Live™: Keep your life in sync. Check it out. Insert movie times and more without leaving Hotmail®. See how.