Hello,
one (stupid) question regarding the zak opcodes and the instruments order, 
I'm writing an orchestra that looks more or less like this:

instr 1
--some code--
zaw aout, 1
endin

instr 2
ain zar 1
--some code--
zaw aout, 3
endin

instr 3
ain zar 3
--some code--
zaw aout, 5
endin

instr 4 
aout zar  5
outs aout, aout
zacl 0, 5
endin

If I run it it works, but if i change za location only in instruments 2 and 3 
(to have instr 3 before instr 2 in the signal path) like this:

instr 2
ain zar 3
--some code--
zaw aout, 5
endin

instr 3
ain zar 1
--some code--
zaw aout, 3
endin

No sound is produced.
It's the normal behaviour of zak patching system, so I've to keep the 
instruments in the same order of "signal path"...
or I'm missing (messing) something else in my code?

Ciao

Stefano

Hi there,

Yes, the instrument order is important. Every ksmps samples, csound 
reads each instrument in turn, in numerical order. At the moment, in 
your non-working example:

instr 1: writes to zak 1
instr 2: reads from zak 3 (nothing there yet), writes to zak 5
instr 3: reads from zak 1, writes to zak 3
instr 4: reads from zak 5 (nothing!), then zacl clears zak variables to 
0 again.

If you take out the zacl statement in instr 4 then it might work (I 
think) but you would introduce a delays as there would be ksmps samples 
between using zaw in instr 3 and zar in instr 2 (in your example at the 
bottom of the page).

I hope this explanation is clear (and I hope it's correct, for that matter)

Joe

vallste@libero.it wrote:
> Hello,
> one (stupid) question regarding the zak opcodes and the instruments order, 
> I'm writing an orchestra that looks more or less like this:
> 
> instr 1
> --some code--
> zaw aout, 1
> endin
> 
> instr 2
> ain zar 1
> --some code--
> zaw aout, 3
> endin
> 
> instr 3
> ain zar 3
> --some code--
> zaw aout, 5
> endin
> 
> instr 4 
> aout zar  5
> outs aout, aout
> zacl 0, 5
> endin
> 
> If I run it it works, but if i change za location only in instruments 2 and 3 
> (to have instr 3 before instr 2 in the signal path) like this:
> 
> instr 2
> ain zar 3
> --some code--
> zaw aout, 5
> endin
> 
> instr 3
> ain zar 1
> --some code--
> zaw aout, 3
> endin
> 
> No sound is produced.
> It's the normal behaviour of zak patching system, so I've to keep the 
> instruments in the same order of "signal path"...
> or I'm missing (messing) something else in my code?
> 
> Ciao
> 
> Stefano
> 
> 
> Send bugs reports to this list.
> To unsubscribe, send email sympa@lists.bath.ac.uk with body "unsubscribe csound"
> 
> 

-- 
Joseph Sanger

Blueberry Eikaiwa
www.bbeikaiwa.com
joe@bbeikaiwa.com

Hi Joe, 
removing the zacl gives the problem that new samples are constanly 
accumulated in the zak space but adding a zacl after every zar (only for it)
do 
the trick... I think that I'll have a delay of at least 1 kr but it seems to 
work.. 

Thank you 


Joseph Sanger-2 wrote:
> 
> Hi there,
> 
> Yes, the instrument order is important. Every ksmps samples, csound 
> reads each instrument in turn, in numerical order. At the moment, in 
> your non-working example:
> 
> instr 1: writes to zak 1
> instr 2: reads from zak 3 (nothing there yet), writes to zak 5
> instr 3: reads from zak 1, writes to zak 3
> instr 4: reads from zak 5 (nothing!), then zacl clears zak variables to 
> 0 again.
> 
> If you take out the zacl statement in instr 4 then it might work (I 
> think) but you would introduce a delays as there would be ksmps samples 
> between using zaw in instr 3 and zar in instr 2 (in your example at the 
> bottom of the page).
> 
> I hope this explanation is clear (and I hope it's correct, for that
> matter)
> 
> Joe
> 
> vallste@libero.it wrote:
>> Hello,
>> one (stupid) question regarding the zak opcodes and the instruments
>> order, 
>> I'm writing an orchestra that looks more or less like this:
>> 
>> instr 1
>> --some code--
>> zaw aout, 1
>> endin
>> 
>> instr 2
>> ain zar 1
>> --some code--
>> zaw aout, 3
>> endin
>> 
>> instr 3
>> ain zar 3
>> --some code--
>> zaw aout, 5
>> endin
>> 
>> instr 4 
>> aout zar  5
>> outs aout, aout
>> zacl 0, 5
>> endin
>> 
>> If I run it it works, but if i change za location only in instruments 2
>> and 3 
>> (to have instr 3 before instr 2 in the signal path) like this:
>> 
>> instr 2
>> ain zar 3
>> --some code--
>> zaw aout, 5
>> endin
>> 
>> instr 3
>> ain zar 1
>> --some code--
>> zaw aout, 3
>> endin
>> 
>> No sound is produced.
>> It's the normal behaviour of zak patching system, so I've to keep the 
>> instruments in the same order of "signal path"...
>> or I'm missing (messing) something else in my code?
>> 
>> Ciao
>> 
>> Stefano
>> 
>> 
>> Send bugs reports to this list.
>> To unsubscribe, send email sympa@lists.bath.ac.uk with body "unsubscribe
>> csound"
>> 
>> 
> 
> -- 
> Joseph Sanger
> 
> Blueberry Eikaiwa
> www.bbeikaiwa.com
> joe@bbeikaiwa.com
> 
> 
> Send bugs reports to this list.
> To unsubscribe, send email sympa@lists.bath.ac.uk with body "unsubscribe
> csound"
> 
> 

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