[Csnd] Re: Re: Re: different pitches during a live-midi performance

Date	2009-07-03 21:22
From	"Art Hunkins"
Subject	[Csnd] Re: Re: Re: different pitches during a live-midi performance
	Hello, Stefan, Here's what I'd try: In header: gkpedal init 0 and after your massign: massign 64, 2 (or whatever controller # your foot pedal is, assign its data to instr 2. The massigns may be tricky.) You should be able to use any type of foot pedal your MIDI keyboard will accept. Make a completely new instrument that receives MIDI data only on controller 64 (or whichever # you choose): instr 2 gkpedal ctrl7 1, 64, 0, 1 endin The above instrument is always receiving foot controller data. In the score, add: i2 0 3600 In your instr1, add (at beginning): ipedal = i(gkpedal) and later (after icps computed): if imnn != 60 and imnn != 62 and notnum ...... igoto skip ; this is a list of all your black MIDI key numbers! icps = (ipedal > 0? icps - (icps * .1): icps + (icps * .1) skip: In the above, ".1" is the percentage of the frequency you wish to add or subtract from your "basic pitch" (12tet). You may want to make some other kind of pitch adjustment. For example you might put the low version (freq) of the black key pitch in your table, then multiply it by some factor if the pedal were up (gkpedal == 0): icps = (ipedal > 0? icps + (icps * .1): icps) Or perhaps you want different groups of "igoto" branches, where for example all F#'s modify in one way, all G#'s in another. Let me know how it works out for you. Art Hunkins ----- Original Message ----- From: Stefan Thomas To: csound@lists.bath.ac.uk Sent: Friday, July 03, 2009 3:22 AM Subject: [Csnd] Re: Re: different pitches during a live-midi performance Dear Art, thanks for Your answer. I have attached a small example to this mail. I use there a scale with 17 pitches per octave but (as You all know)I do have only 12 pitches per octave on the keyboard. I would like to allocate the black key two pitches and I would like to change this with the pressure of the una-corda-pedal (the left pedal). While pressing the left pedal down, I would like to get a lower pitch, in the other case, the higher pitch. But I have no idea, how to do it with csound. So, I really need Your help! At least I hope, that my idea of negotiating the limitation of 12 pitches per octave in this way will be interesting for other musicians to. Thanks Stefan : 2009/7/2 Art Hunkins <abhunkin@uncg.edu> Yes, certainly. But tell us more what you have in mind. I assume your keyboard would be a MIDI controller, correct? An obvious choice would be a MIDI foot controller input through the keyboard, or a MIDI footswitch in conjunction with a foot controller or a portamento pedal. If you need specific pitches from the pedal(s) - even from a standalone portamento pedal, Csound could "round" the pedal to the nearest pitch, or indeed add a rounded percentage to the current keyboard pitch. There are many possibilities. Art Hunkins ----- Original Message ----- From: Stefan Thomas To: csound@lists.bath.ac.uk Sent: Thursday, July 02, 2009 11:57 AM Subject: [Csnd] different pitches during a live-midi performance Dear community, I want to know, if it could be possible, to get different pitches for e.g. fis and ges during a live-midi performance. What I desire, is to influence the pitch by a controller, e.g. the left piano-pedal. I'm not speaking of pitch-bending, I really mean an exact, clearly regognizable pitch, when You press a key with od without this controller. Is it possible?

Date	2009-07-05 17:06
From	Stefan Thomas
Subject	[Csnd] Re: Re: Re: Re: different pitches during a live-midi performance
Attachments	17tet.cps
	Dear Art, thanks very much! I tried out what You suggested to me, but I get always error messages in line 30 and 31. I don't know what I'm doing wrong, I have to admit, that I don't have enough experiences with the syntax. It would be great, if You could gove me a hint, one more time! Thanks, Stefan Here is, again, the file ( a little smaller now): <CsoundSynthesizer> <CsOptions> -odevaudio -M2 -b400 </CsOptions> <CsInstruments> sr = 44100 kr = 2205 ksmps = 20 nchnls = 2 gkpedal init 0 ipch = 8.02 iequal = 12 massign 0, 1 ; assign all midi events to instr 1, massign 64, 2 ; pgmassign 0, 1 ; also all program changes instr 1 ipedal = i(gkpedal) ituningtable = 10 ; the number of the f-table imnn notnum indx = imnn * 2 + 1 ; values in table alternate between ; Midi note nums and frequencies icps table indx, ituningtable if imnn != 61 and imnn != 63 and imnn !=66 igoto skip icps = (ipedal > 0? icps - (icps * .9): icps + (icps * .1) skip: iamp ampmidi 10000 ; Hüllkurven definieren ;nachklingzeit inach = 0.1 ;Ende der Lautstartekurve iend = 0.0000000001 ; für alle die gleiche Endlautstärke ; die Einschwingzeit für jeden Teilton iein = 0.0030 ;die unterschiedlichen ausschwingzeiten iabkling1 = 4.52 iabkling2 = 7.222 iabkling3 = 9.262 iabkling4 = 9.422 ;die anfangslautstaerke ianfang = 0.001 ;wie laut klingt der Ton am Ende, nach dem loslassen der Note iweiterkling = 0.00000000000001 ;die unterschiedlichen Maxima der Hüllkurven ilautfaktor = 0.8 imax1 = 1 imax2 = ilautfaktor imax3= ilautfaktor^2 imax4 = ilautfaktor^3 ;die Individuellen Hüllkurven für jeden einzelnen Teilton kenv1 expsegr ianfang, iein, imax1, iabkling1, iend, inach, iweiterkling kenv2 expsegr ianfang, iein, imax2, iabkling2, iend, inach, iweiterkling kenv3 expsegr ianfang, iein, imax3, iabkling3, iend, inach, iweiterkling kenv4 expsegr ianfang, iein, imax4, iabkling4, iend, inach, iweiterkling ;die Frequenzverhältnisse ifundamental = icps ipartialB =icps2; teilton2 ipartialC = icps3 ;teilton 3 ipartialD = icps4 a1 oscil kenv1iamp, ifundamental, 1 a2 oscil kenv2iamp, ipartialB, 1 a3 oscil kenv3iamp, ipartialC, 1 a4 oscil kenv4iamp, ipartialD, 1 aton = a1+a2+a3+a4 ;velocity controlled tone control icutoff_oct veloc 6, 14 ;lowpass filter our audio signal alautfilter tone aton, cpsoct(icutoff_oct) ;k1 linenr 0.01, 0.03, 0.1, 0.01 outs alautfilter, alautfilter endin instr 2 gkpedal ctrl7 1, 64, 0, 1 endin </CsInstruments> ; die Partiturereignisse werden definiert <CsScore> f1 0 8193 10 1 f 10 0 256 -23 "17tet.cps" i1 0 3600 i2 0 3600 </CsScore> </CsoundSynthesizer> 2009/7/3 Art Hunkins <abhunkin@uncg.edu> Hello, Stefan, Here's what I'd try: In header: gkpedal init 0 and after your massign: massign 64, 2 (or whatever controller # your foot pedal is, assign its data to instr 2. The massigns may be tricky.) You should be able to use any type of foot pedal your MIDI keyboard will accept. Make a completely new instrument that receives MIDI data only on controller 64 (or whichever # you choose): instr 2 gkpedal ctrl7 1, 64, 0, 1 endin The above instrument is always receiving foot controller data. In the score, add: i2 0 3600 In your instr1, add (at beginning): ipedal = i(gkpedal) and later (after icps computed): if imnn != 60 and imnn != 62 and notnum ...... igoto skip ; this is a list of all your black MIDI key numbers! icps = (ipedal > 0? icps - (icps .1): icps + (icps * .1) skip: In the above, ".1" is the percentage of the frequency you wish to add or subtract from your "basic pitch" (12tet). You may want to make some other kind of pitch adjustment. For example you might put the low version (freq) of the black key pitch in your table, then multiply it by some factor if the pedal were up (gkpedal == 0): icps = (ipedal > 0? icps + (icps * .1): icps) Or perhaps you want different groups of "igoto" branches, where for example all F#'s modify in one way, all G#'s in another. Let me know how it works out for you. Art Hunkins ----- Original Message ----- From: Stefan Thomas To: csound@lists.bath.ac.uk Sent: Friday, July 03, 2009 3:22 AM Subject: [Csnd] Re: Re: different pitches during a live-midi performance Dear Art, thanks for Your answer. I have attached a small example to this mail. I use there a scale with 17 pitches per octave but (as You all know)I do have only 12 pitches per octave on the keyboard. I would like to allocate the black key two pitches and I would like to change this with the pressure of the una-corda-pedal (the left pedal). While pressing the left pedal down, I would like to get a lower pitch, in the other case, the higher pitch. But I have no idea, how to do it with csound. So, I really need Your help! At least I hope, that my idea of negotiating the limitation of 12 pitches per octave in this way will be interesting for other musicians to. Thanks Stefan : 2009/7/2 Art Hunkins <abhunkin@uncg.edu> Yes, certainly. But tell us more what you have in mind. I assume your keyboard would be a MIDI controller, correct? An obvious choice would be a MIDI foot controller input through the keyboard, or a MIDI footswitch in conjunction with a foot controller or a portamento pedal. If you need specific pitches from the pedal(s) - even from a standalone portamento pedal, Csound could "round" the pedal to the nearest pitch, or indeed add a rounded percentage to the current keyboard pitch. There are many possibilities. Art Hunkins ----- Original Message ----- From: Stefan Thomas To: csound@lists.bath.ac.uk Sent: Thursday, July 02, 2009 11:57 AM Subject: [Csnd] different pitches during a live-midi performance Dear community, I want to know, if it could be possible, to get different pitches for e.g. fis and ges during a live-midi performance. What I desire, is to influence the pitch by a controller, e.g. the left piano-pedal. I'm not speaking of pitch-bending, I really mean an exact, clearly regognizable pitch, when You press a key with od without this controller. Is it possible?