[PD] Loading arrays with arbitrary wave forms

[Alexandros Drymonitis]

You can implement the same thing with Pd only. I've attached a patch that
creates the same waveform as the one you're loading, plus adds the three
guard points for the cubic interpolation.


On Thu, Apr 10, 2014 at 3:48 AM, David <dfkettle at gmail.com> wrote:

> Thanks again to everyone that replied. I looked at the examples, but to be
> honest I didn't really understand them completely, and I got a few error
> messages when I tried to run them. I have pd-extended installed, but maybe
> I'm missing some externals used by the examples. Anyway, I decided to go
> with plan B, and use another software package to generate sound files and
> then load them into PD. I'm using Octave, an open-source math program that
> is mostly compatible with Matlib. It has some built-in functions to read
> and write audio files (mono only), but I can generate audio files in just a
> few lines of code, like this:
>
>   x = linspace(0,2*pi,1024);
>   y = sin(cos(sin(x) * pi) * pi);
>   plot(x,y);
>   title('y = sin(cos(sin x) * pi) * pi)');
>   wavwrite(y,44100,16,'C:\\Data\\Octave\\sincossin.wav');
>
> The first two lines generate the data (1024 samples in length), the next
> two lines draw a graph in a separate window, and the last line writes the
> data to a file. I really recommend it if you want to generate audio samples
> using math functions.
>
> Then I load the file into PD with the attached patch. Since I know my
> files are 1024 samples long, I can just allocate an array of the correct
> size and not have to worry about complications.
>
> I attached my patch and a sample file (generated using the code above) if
> you're interested.
>
> David.
>
>
>
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