[Cs-dev] Extending use of MIDI program change
| Date | 2013-05-26 16:56 |
| From | Henrik Andersson |
| Subject | [Cs-dev] Extending use of MIDI program change |
| Attachments | None None |
Hi,
I working on a host (musical composer) which uses csound instruments, im relative new on csound so my topic might already be solved in some way. I use control channels to interface between host and instrument and I have a need for having "presets", that do belong to the csound instrument and not the host, for the controls bound to midi program change.
I noticed one could use pgmassign to bind an instrument to a program but what i want is to bind a table of values for control values. I'm thinking about something like:
pgmassign 0, f1 chn_k "amp"... chn_k "freq"... instr 1 kamp chnget "amp"
kf chnget "freq" aout oscil kamp, kf out aout endin f1 "Damped and dull", 0.25, 65.405
f2 "Strong A4", 0.8, 440 Anyone have any thougths about this ? Is it already doable with current csound ?
Is this considered as such a specific feature so it doesnt belong to csound ? Regards, Henrik Andersson
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| Date | 2013-05-27 16:49 |
| From | Rory Walsh |
| Subject | Re: [Cs-dev] Extending use of MIDI program change |
I think this is currently doable, but I don't think you need to assign a program change to a function table. That part confuses me a little. Anyhow, one approach is to set up a MIDI listener instrument which uses the midiin opcode. You could then check for program changes there and use a simple test to assign different function tables depending on the program change, or? ------------------------------------------------------------------------------ Try New Relic Now & We'll Send You this Cool Shirt New Relic is the only SaaS-based application performance monitoring service that delivers powerful full stack analytics. Optimize and monitor your browser, app, & servers with just a few lines of code. Try New Relic and get this awesome Nerd Life shirt! http://p.sf.net/sfu/newrelic_d2d_may _______________________________________________ Csound-devel mailing list Csound-devel@lists.sourceforge.net |
| Date | 2013-05-27 17:10 |
| From | Andres Cabrera |
| Subject | Re: [Cs-dev] Extending use of MIDI program change |
| Attachments | None None |
Hi, Cheers,The built-in program change mechanism is simple and designed to switch only the instrument triggered by incoming MIDI. But you could have an instrument receive the program changes using midiin and change a global variable that sets the table number for the synthesizer instrument. You then need to make sure your opcode accepts k-rate table changes, or check whether the table has changed and do a re-init. Andrés On Sun, May 26, 2013 at 8:56 AM, Henrik Andersson <henrik.4e@gmail.com> wrote:
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| Date | 2013-05-27 20:28 |
| From | Henrik Andersson |
| Subject | Re: [Cs-dev] Extending use of MIDI program change |
| Attachments | None None |
Hi, Take this example: chn_k "amp"... chn_k "freq"... preset "Loud amp", 1.0, 220
preset "Damped amp", 0.4, 440 pgmassign 1, "Loud amp" pgmassign 2, "Damped amp" instr 1
kAmp getchn "amp" kFreq getchn "freq" aout oscil kAmp, kFreq out aout endin And consider this Preset API + c code usage: /* Returns null if index out of range */ const char *csoundGetPreset(CSOUND *cs, int index);
/* Selects a preset with name */ void csoundSelectPreset(CSOUND *cs, const char *name); eg: /* Example of enumeration of presets */
idx = 0; name = csoundGetPreset(csound, idx); while(name) { printf(stderr,"Preset: %s\n", name); name = csoundGetPreset(csound, idx++)
} /* Actual use of a preset */ csoundSelectPreset(csound, "Loud amp"); which will select "Loud amp" program and set "amp" to 1.0 and freq to 220.
/Henrik 2013/5/27 Andres Cabrera <mantaraya36@gmail.com>
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| Date | 2013-06-06 01:36 |
| From | Andres Cabrera |
| Subject | Re: [Cs-dev] Extending use of MIDI program change |
| Attachments | None None |
Hi, I guess it's doable, but it would have to be better defined. For example, how do values map to channel names? i.e. how does Csound know how to set a certain channel with a value.Andrés On Mon, May 27, 2013 at 12:28 PM, Henrik Andersson <henrik.4e@gmail.com> wrote:
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