What to do for Project 2?

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What to do for Project 2?
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Objectives

• Tie back to Processing
• Work with classes
• Present a creative challenge
• Work with a different programming language
• Well three out of four objectives aint bad

3
Many Processing Libraries

• Video
• Serial
• PDF Export
• OpenGL
• Arduino
• Minim ? Audio
• Many more

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Minim

• A Processing library that uses JavaSound API,
  Tritonus, and MP3SPI to provide an easy to use
  audio library.
• Features
• AudioPlayer for playback of WAV, AIFF, AU, SND,
  MP3 files.
• AudioMetaData for metadata about a file, such as
  ID3 tags.
• AudioSignal for writing your own sound synthesis
• AudioRecorder for audio recording
• AudioEffect for writing your own audio effects.
• FFT for doing spectrum analysis.
• BeatDetect for doing beat detection.

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A Sound Theory

• Mike Ruizs Sound Applets
• Minim FFT

Amplitude
Frequency
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Music Visualization using Minim

• Options
• Use the wave form
• Use the FFT (on previous slide)
• Use BeatDectect ? Explained Here

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The BeatDetect Class (by Example)(SOUND_ENERGY
mode)
void draw() beat.detect(song.mix) if(
beat.isOnset() )
void stop() song.close()
minim.stop() super.stop()

• import ddf.minim.
• import ddf.minim.analysis.
• Minim minim
• AudioPlayer song
• BeatDetect beat
• void setup()
• minim new Minim(this)
• song minim.loadFile("TicketToRide.mp3")
• song.play()
• beat new BeatDetect()
• beat.setSensitivity(100)

Example Program
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The BeatDetect Class (by Example)(FREQ_ENERGY
mode)

• import ddf.minim.
• import ddf.minim.analysis.
• Minim minim
• AudioPlayer song
• BeatDetect beat
• BeatListener bl
• void setup()
• minim new Minim(this)
• song minim.loadFile("TicketToRide.mp3",
• 32768)
• song.play()
• beat new BeatDetect(song.bufferSize(),
  song.sampleRate())
• beat.setSensitivity(200)
• bl new BeatListener(beat, song)

class BeatListener implements AudioListener
private BeatDetect beat private AudioPlayer
source
Buffer size must be a power of 2
Example Program
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A Little Insight into Beat Detection

• Use the drawGraph() method to see the energy
  levels.
• Example program

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Project 2

• Presented at the time of our final
• Tuesday, May 3 _at_1130
• Project 2
• Seniors, please talk to me about the due date.

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Resources

• Main documentation
• Processing Page Examples
• Minim Code Log Examples
• Doorbell example by Daniel Shiffman
• Audio Processing Examples by Dan Ellis
• Vimeo video tutorial 4 and video tutorial 5
• OpenProcessing Examples
• Beatles Ukulele Project (a source of .mp3 files)