Granular Synthesis in NextGeneration Games

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Granular Synthesis in Next-Generation Games

• Game Developer's Conference 2006
• San Jose
• Leonard J. Paul
• Vancouver Film School
• Game Audio Instructor
• lpaul at vfs.com
• 604-685-5808 x4035

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Grain Production
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Granular Synthesis Flowchart
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Granular Density Spectrogram
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Granular Parameters

• Selection order (forwards/reverse or freeze)
• Pitch shift (playback rate)
• Amplitude range
• Spatialization / panning (static/dynamic)
• Grain duration
• Grain density (number of grains/second or number
  of grain voices)
• Envelope (ASR shape, attack/release slope or
  windowing function)
• DSP effect (reverb, filtering etc.)
• Feedback amount (for granular delay lines)

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Grain Segmentation
Split into natural length sizes similar to
syllables to improve granulation
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Dialogue

• Independent control over pitch and tempo
• Segmentation
• Phase vocoder
• Examples

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Sound Effects

• Delay-line granulation effect
• Synthesis techniques
• Scraping, skidding and sliding
• Ambiances
• Examples

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Crowd Engines

• Granular cross-fading / morphing
• Crowd intensities
• Chaining between chunks
• Reduction of identifiable loop elements
• Examples

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Car Engines

• Segmentation
• Layering
• RPM bands
• Pitch-shifting
• Examples

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Music

• Techniques and aesthetics
• Real-time vs. pre-rendered
• Grain quantization
• Software tools
• Examples

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Granular Effects

• Techniques
• Delay-line granulation
• Granular reverb
• Examples

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Granular Surround

• History of use of diffusion in performance
• Grain speaker assignment
• Trajectories
• Examples

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GranularParticle Effects ControlParameters
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Granular Software
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CloudGenerator for Mac
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Granular Footsteps in Java
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Natural Wavelet Grain Segmentation in Java
Reynald Hoskinson
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Synthesis Toolkit
Perry R. Cook Gary P. Scavone
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AudioMulch
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Max/MSP Granular Synthesis
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Pure Data Granular Synthesis
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Implementation

• Prototyping
• Integration into game audio tools and libraries
• Pure Data demos and prototyping techniques
• Source code examples

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Questions?

• lpaul at vfs.com
• http//www.VideoGameAudio.com