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Index › Programming Questions & Help › Processing Implementations › Ruby Processing: Using Minim
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Ruby Processing: Using Minim (Read 1999 times)
datalus
Ruby Processing: Using Minim
Feb 19th, 2009, 5:12pm  
Hello, can anyone point me to any resources or anything for using Minim in Ruby-Processing?

I am having trouble creating an instance of Minim.

Code:

minim = Minim.new(self)


Is throwing this stack trace:
Code:

Exception in thread "Animation Thread" datalus_visualizer.rb:35:in `setup': no public constructors for Java::DdfMinim::Minim (TypeError)
from :1
...internal jruby stack elided...
from DatalusVisualizer.setup(:1)
from (unknown).(unknown)(:1)


I was also wondering more about Ashkenas's A Face for Stephen Hawking's ruby-processing sketch. I was wondering how Minim actually does any detection in there. I don't see any AudioIn class for Minim. I'm wondering if this is coming from Angela Audio? I tried finding the angela audio library but I can't find it anywhere either to check out it's source to learn more Smiley
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jashkenas
Re: Ruby Processing: Using Minim
Reply #1 - Feb 20th, 2009, 5:20am  
Sure thing, datalus.

Here's a basic sketch that demonstrates Minim audio analysis for beat detection, amplitude measurement, and fast-fourier transform for pitch analysis. This plus the Minim docs should get you settled nicely.

http://gist.github.com/67310

The error that you were seeing was because the minim class you were looking for hadn't quite been imported into your sketch's scope. (Ruby-Processing isn't smart enough to detect what classes to import). Check out the top of the Gist for the fix.
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datalus
Re: Ruby Processing: Using Minim
Reply #2 - Feb 28th, 2009, 7:35am  
thanks a lot Smiley
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