Music 256a/CS 476a | Fall 2016
Lecture 5: Sound Synthesis Basics
Center for Computer Research in Music and Acoustics
Stanford University
Back to the starter code of HW1: preventing clicking when updating parameters
y(n) = (1-p)*x(n) + p*y(n-1)
Unity-dc-gain one-pole lowpass where p is the pole.
A pole close to 1 (e.g. 0.999) will implement a lowpass filter and will "smooth" any control signal.
Percussive Sounds vs. Sound Textures: Amplitude Envelope
"ADSR" Envelope
Fourier Series and Additive Synthesis
Simple, versatile but hard to control...
Special case: sound "resynthesis"
Amplitude Modulation (AM)
Frequency Modulation Synthesis (FM)
And if you're curious, here's more
Waveshaping Synthesis
Subtractive Synthesis
Granular Synthesis
A "homemade" example: Chris Carlson's Borderland
No JUCE example, but it should be easy to make one starting from this tutorial
Physical Modeling Synthesis
Commercial Examples
Physical Modeling Synthesis
Vocal Synthesis
- Source/Filter Model
- FOF ("Fonction d'ondes formantiques" - Formant Synthesis)
- Linear Predictive Coding (LPC)
- Sample based or hybrid (e.g. Vocaloid)
