Dear list:

I'm probably asking something stupid, but is there a way to know the rate of

an input variable from within a Csound UDO?

This is asked in order to improve the performance of an opcode without doing an i-rate version of it.

I mean:

opcode anything, a, ak

    aIn, aOut, kParam xin

  ;try to find whether kParam is an k or i rate variable

   if(kParam is an i-rate variable)  then

    ("do something")

   else

     ("do a different thing")

   endif

   xout aOut

endop

Thanks in advance.

Dr. Oscar Pablo Di Liscia

Profesor Titular

Director Programa de Investigación "Sistemas Temporales y Síntesis Espacial de Sonido en el Arte Sonoro"

Escuela Universitaria de Artes

Universidad Nacional de Quilmes

Argentina

Csound mailing list Csound@listserv.heanet.ie https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND Send bugs reports to https://github.com/csound/csound/issues Discussions of bugs and features can be posted here

Hi Oscar,

this is not possible in the way you describe. Normally this is done by overloading the opcode (i.e. writing different versions for

different inputs, but using the same opcode name).

Victor Lazzarini

Dean of Arts, Celtic Studies, and Philosophy

Maynooth University

Ireland

On 7 Jul 2018, at 00:08, Oscar Pablo Di Liscia <oscarpablodiliscia@GMAIL.COM> wrote:

Dear list:

I'm probably asking something stupid, but is there a way to know the rate of

an input variable from within a Csound UDO?

This is asked in order to improve the performance of an opcode without doing an i-rate version of it.

I mean:

opcode anything, a, ak

    aIn, aOut, kParam xin

  ;try to find whether kParam is an k or i rate variable

   if(kParam is an i-rate variable)  then

    ("do something")

   else

     ("do a different thing")

   endif

   xout aOut

endop

Thanks in advance.

Dr. Oscar Pablo Di Liscia

Profesor Titular

Director Programa de Investigación "Sistemas Temporales y Síntesis Espacial de Sonido en el Arte Sonoro"

Escuela Universitaria de Artes

Universidad Nacional de Quilmes

Argentina

Csound mailing list Csound@listserv.heanet.ie https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND Send bugs reports to https://github.com/csound/csound/issues Discussions of bugs and features can be posted here

Csound mailing list Csound@listserv.heanet.ie https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND Send bugs reports to https://github.com/csound/csound/issues Discussions of bugs and features can be posted here

Or... haven't checked this mind...

If you write two UDO's with the same name, except one with krate input, and the other with irate, then Csound will choose the UDO based on the input. I think.

T

On Sat, 7 Jul. 2018, 11:11 am thorin kerr, <thorin.kerr@gmail.com> wrote:

Not a great solution, but a krate input will always be 0 at init time, whereas an irate input will keep its value. 

Thorin

On Sat, 7 Jul. 2018, 9:08 am Oscar Pablo Di Liscia, <oscarpablodiliscia@gmail.com> wrote:

Dear list:

I'm probably asking something stupid, but is there a way to know the rate of

an input variable from within a Csound UDO?

This is asked in order to improve the performance of an opcode without doing an i-rate version of it.

I mean:

opcode anything, a, ak

    aIn, aOut, kParam xin

  ;try to find whether kParam is an k or i rate variable

   if(kParam is an i-rate variable)  then

    ("do something")

   else

     ("do a different thing")

   endif

   xout aOut

endop

Thanks in advance.

Dr. Oscar Pablo Di Liscia

Profesor Titular

Director Programa de Investigación "Sistemas Temporales y Síntesis Espacial de Sonido en el Arte Sonoro"

Escuela Universitaria de Artes

Universidad Nacional de Quilmes

Argentina

Csound mailing list Csound@listserv.heanet.ie https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND Send bugs reports to https://github.com/csound/csound/issues Discussions of bugs and features can be posted here

Csound mailing list Csound@listserv.heanet.ie https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND Send bugs reports to https://github.com/csound/csound/issues Discussions of bugs and features can be posted here