Page 1 of 2
how an empty node can produce a value?
Posted: Tue Sep 17, 2013 8:41 pm
by tester
Looks that some sort of magic is going on.
Run audio.
I'm getting readouts out of the empty air and empty nodes.
???
Re: how an empty node can produce a value?
Posted: Tue Sep 17, 2013 9:10 pm
by tester
I have reduced the code to minimum. The same happens.
Re: how an empty node can produce a value?
Posted: Tue Sep 17, 2013 9:19 pm
by tester
Hmm... It looks serious. I tried to copy/paste the content of the code to new schematic and re-produced the same design. Readouts show activity from empty air. I have no idea what and why is happening, but looks like a bug.
Re: how an empty node can produce a value?
Posted: Tue Sep 17, 2013 9:35 pm
by Nubeat7
you need some input on the phase.. because you calculate with an input with no value
Re: how an empty node can produce a value?
Posted: Tue Sep 17, 2013 9:43 pm
by tester
It does not matters. Readout should not show anything, neither connected nor floating in the air. Besides as I said - I reduced the schematic to minimum in order to reproduce error.
Re: how an empty node can produce a value?
Posted: Tue Sep 17, 2013 10:30 pm
by Nubeat7
btw your osc isnt playing the right frquencies, it is playing the double freq, if you use
it should be fine, here is the corrected version with comparsion
Re: how an empty node can produce a value?
Posted: Tue Sep 17, 2013 10:47 pm
by MyCo
You are not allowed to write to a streamin variable. You code does:
Code: Select all
streamin ph;
ph = ph + freq;
ph = ph-(ph>=1&1);
is an input memory address, you are not allowed to reassign it.
Re: how an empty node can produce a value?
Posted: Tue Sep 17, 2013 11:03 pm
by tester
Nubeat7, yes, I know. It's a partial/fractional schematic, scaling is elsewhere.
MyCo, so how is that possible, that the
initial design, commented by Trog - works?
I mean - should not be, that blue input node, not connected to anything - should have "input = 0" by default? Check this. When float is connected to ph (or whatever you rename it inside the code) - it works, when you disconnect it - the whole design starts to get sick. What I'm missing? How to make this ramp/triangle thing differently?
Re: how an empty node can produce a value?
Posted: Wed Sep 18, 2013 9:32 am
by MyCo
You are not allowed to write to an input. That's all that I can tell you. It messes up the whole compiler code. Infact FS should throw a big red stop sign error message when someone tries to do something like this.
Sometimes it works, but as soon you have more stream processing everything goes crazy, because you overwrite outputs from previous modules with writing to an input.
Re: how an empty node can produce a value?
Posted: Wed Sep 18, 2013 10:30 am
by tester
Okay, I read you, but on the other hand I admit - I have rather vague understanding about this thing. So let me rephrase the question. In the example above - what should be changed in the code, to make it work correct?
//edit:
This general issue drew attention of devs, so it's possible that the behavior will be corrected.