Is there any facility in Csound that will permit a conditional abort during 
orchestra initialization?

In realtime situations, I often require performers to specify the values of 
certain macros, and I'm looking for an abort capability if the macro 
specified is out of range.

Here's a simple example:

#define FREQ #25000#

if  $FREQ >= (SR * .5) then
  printf "$FREQ needs to be less than %d\\n", SR * .5
  abort
endif

I suppose the latter segment might need to be within an instrument 
definition - which would be no problem in my case.

I know this could be done by forcing some kind of error - but I'm looking 
for something "clean".

Art Hunkins 

event "e"


On Tue, 5 Feb 2008, Art Hunkins wrote:

> Is there any facility in Csound that will permit a conditional abort during 
> orchestra initialization?
>
> In realtime situations, I often require performers to specify the values of 
> certain macros, and I'm looking for an abort capability if the macro 
> specified is out of range.
>
> Here's a simple example:
>
> #define FREQ #25000#
>
> if  $FREQ >= (SR * .5) then
> printf "$FREQ needs to be less than %d\\n", SR * .5
> abort
> endif
>
> I suppose the latter segment might need to be within an instrument definition 
> - which would be no problem in my case.
>
> I know this could be done by forcing some kind of error - but I'm looking for 
> something "clean".
>
> Art Hunkins 
>
>
> Send bugs reports to this list.
> To unsubscribe, send email sympa@lists.bath.ac.uk with body "unsubscribe 
> csound"
>

oh i should mention it used to be that you had to add some time/duration 
params 
for this -- i don't know if it's been fixed yet, but if you do get an 
error message this should work:

  event "e", 0, 0


On Tue, 5 Feb 2008, Matt J. Ingalls wrote:

>
>
> event "e"
>
>
> On Tue, 5 Feb 2008, Art Hunkins wrote:
>
>> Is there any facility in Csound that will permit a conditional abort 
>> during orchestra initialization?
>> 
>> In realtime situations, I often require performers to specify the values 
>> of certain macros, and I'm looking for an abort capability if the macro 
>> specified is out of range.
>> 
>> Here's a simple example:
>> 
>> #define FREQ #25000#
>> 
>> if  $FREQ >= (SR * .5) then
>> printf "$FREQ needs to be less than %d\\n", SR * .5
>> abort
>> endif
>> 
>> I suppose the latter segment might need to be within an instrument 
>> definition - which would be no problem in my case.
>> 
>> I know this could be done by forcing some kind of error - but I'm looking 
>> for something "clean".
>> 
>> Art Hunkins 
>> 
>> Send bugs reports to this list.
>> To unsubscribe, send email sympa@lists.bath.ac.uk with body "unsubscribe 
>> csound"
>> 
>
>
> Send bugs reports to this list.
> To unsubscribe, send email sympa@lists.bath.ac.uk with body "unsubscribe 
> csound"
>