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Processing 2: Creative Coding Hotshot

You're reading from   Processing 2: Creative Coding Hotshot Learn Processing with exciting and engaging projects to make your computer talk, see, hear, express emotions, and even design physical objects

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Product type Paperback
Published in May 2013
Publisher Packt
ISBN-13 9781782166726
Length 266 pages
Edition 1st Edition
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Author (1):
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Nikolaus Gradwohl Nikolaus Gradwohl
Author Profile Icon Nikolaus Gradwohl
Nikolaus Gradwohl
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Table of Contents (16) Chapters Close

Processing 2: Creative Coding Hotshot
Credits
About the Author
About the Reviewers
www.PacktPub.com
Preface
1. Romeo and Juliet FREE CHAPTER 2. The Stick Figure Dance Company 3. The Disco Dance Floor 4. Smilie-O-Mat 5. The Smilie-O-Mat Controller 6. Fly to the Moon 7. The Neon Globe 8. Logfile Geo-visualizer 9. From Virtual to Real Index

Can you hear me?


In the first task for this mission, we will write a Processing sketch that plays an MP3 file and uses the Minim library to access the played samples. We will use this data to write an oscilloscope-like curve. We will then use the fft class of Minim to calculate the frequency spectrum of the currently played sound and generate a bar graph to visualize it.

Engage Thrusters

Let's give Processing ears:

  1. Create a new Processing sketch and add a setup() and a draw() method.

    void setup() {
    }
    
    void draw() {
    }
  2. Add the import statements for the Minim library by navigating to Sketch | Import Library ... | minim.

  3. Now we need to add an MP3 file to our sketch by navigating to Sketch | Add File ... or by simply dropping it onto the sketch window.

  4. Add an AudioPlayer object to your sketch and initialize it in the setup() method.

    import ddf.minim.spi.*;
    import ddf.minim.signals.*;
    import ddf.minim.*;
    import ddf.minim.analysis.*;
    import ddf.minim.ugens.*;
    import ddf.minim.effects.*;
    
    Minim minim;
    AudioPlayer...
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