Re: [chuck-users] sndBuf.valueAt (Forrest Curo asks)

19 Apr 2020

      Um. that works.
So does this:
SndBuf s => blackhole;
"/home/forrest/chuck/examples/basic/om.wav" => s.read;
float samples;
0 => int i;
while (s.pos() < s.samples())  {
    <<< s.last() >>>;
    s.pos() => i;
    (s.valueAt(i)) => samples;
    <<< samples >>>;
    samp => now;
}

I was having trouble trying to read a sndBuf like an array, or put its
contents into an array.
Maybe I was reading numbers off the end of the file. Declaring
'float samples[]; '
and doing
's.valueAt(i) => samples[i];'

got me a 'Null pointer' error.

Stumbling over syntax, I guess. Thanks for help!

On Sun, Apr 19, 2020 at 10:54 AM Perry Cook  wrote:
...
This is truly odd.  I don’t have easy means to test it.   I don’t
know why it wouldbe broken dependent on the dac, however.
For fun you might try something like this, just to verify that the
valueAt() function is what’s busted.
SndBuf s => blackhole;
“Fred.wav” => s.read;
while (s.pos() < s.samples())  {
    <<< s.last() >>>;
    samp => now;
}
PRC
...
On Apr 19, 2020, at 9:00 AM, chuck-users-request@lists.cs.princeton.edu
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Today's Topics:
1. sndBuf.valueAt (Forrest Curo)
----------------------------------------------------------------------
Message: 1
Date: Sun, 19 Apr 2020 07:30:15 -0700
From: Forrest Curo 
To: ChucK Users Mailing List 
Subject: [chuck-users] sndBuf.valueAt
Message-ID:

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Using chuck linux-jack this gives me reasonable numbers between -1 and 1.
Using chuck linux-alsa I'm able to play the file I've read into sndBuf;
but
trying to copy it via .valueAt gives absurdly high ["out of range"]
numbers
at each point. [It can be a different high number different times I run
chuck, but the number it is turns up at every point I sample.]
Is there a fix for this? Aside from using jack on a computer where it
befnurgles the midi?