if you want to use a variable as input before it gets filled, initialise it first.
Say you want to do an allpass filter in direct form
ayprev init 0
axprev init 0
...
ay = axprev - icoef*(ax + ayprev)
axprev = ax
ayprev = ay
Also, don't forget to set ksmps = 1 too, if you are
using feedback (as above). This can be done in a UDO with
setksmps 1
without forcing all instruments to use 1-sample blocks.
Victor
----- Original Message -----
From: Aki Laaksovirta <akilaa@kotiposti.net>
Date: Saturday, March 28, 2009 7:04 pm
Subject: [Csnd] Physical modeling synthesis
To: csound@lists.bath.ac.uk
> I have recently tried to establish some bidirectional delay
> lines, but Csound always only replies that "***** used before
> defined." So, my suggestion would be that the orchestra be split
> up in two parts: first one, which describes the needed opcodes,
> and second one, which describes the connections between the
> opcodes. Would that sound fair?
>
>
> Send bugs reports to this list.
> To unsubscribe, send email sympa@lists.bath.ac.uk with body
> "unsubscribe csound"
Dr Victor Lazzarini, Senior Lecturer, Dept. of Music,
National University of Ireland, Maynooth