Delay inside GenExpr operators

    Oct 18 2012 | 1:42 pm
    Hi All,
    I've been trying to get the delay and history operators to work inside a custom GenExpr operator/function definition within a codebox, but I'm not having much luck. The same code works fine as long as I don't try to package it as a function. Has anybody else managed to get something similar to work? I'm wondering whether this a limitation of the language at the moment, or whether I'm using the wrong syntax.
    The definition looks like this:
    Delay delay_1(8, interp="linear");
    tap1_2 =, interp="linear");
    float_3 = float(0.618034);
    mul_4 = (tap1_2 * float_3);
    add_5 = (in_AP + mul_4);
    mul_6 = (add_5 * float_3);
    add_7 = (mul_6 + tap1_2);
    out_AP = add_7;
    return out_AP;

    • Oct 19 2012 | 5:58 am
      Hi there,
      Yes, we have become aware that there is a problem with object declarations within GenExpr functions for gen~ in 6.0.7. The issue is ticketed and a fix will be in the next update. We're very sorry for the inconvenience.
    • Oct 19 2012 | 11:32 am
      Thanks for the reply Graham! Good to know it'll be possible in the future.
    • Jun 18 2014 | 9:55 am
      Is this still a problem? It seems so or I'm doing something wrong..
    • Jul 03 2014 | 7:30 pm
      hi woyteg.
      it should work fine.
      here is an example, made using max 6.1.7
      just be careful using delays in functions. unlike other functions, gen has to create memory for every single instance of the used delays in the used functions at runtime - you can quickly end up with huge memory resources - you cannot dynamically manage the memory allocation in gen~.
    • Jul 03 2014 | 7:39 pm
      Hi! Thanks for the reply!
      That means I have done something wrong then. I'll re-check. Thank you!