Homework #4 -- Sine Tones:  Additive Synthesis, Amplitude Modulation, and Frequency Modulation

Download or view the scripts used in this assignment here (hw4.scm).

For each kind of sine wave manipulation (i.e., additive synthesis, AM, and FM), we have generated three distinct examples: a sine wave with beating, a fused-complex timbre, and a multi-pitch timbre.  Click on the links to download a sound (.wav) file and graphic (.jpg) file for each example.

Additive Synthesis  ---> Y0 = sine(F1) + sine(F2)

Sine wave with beating:    Sinetone1-1.wav   Sinetone1-1.jpg
Fused-complex timbre:     Sinetone1-2.wav    Sinetone1-2.jpg
Multi-pitch timbre:             Sinetone1-3.wav    Sinetone1-3.jpg
 

Amplitude Modulation   ---> Y0 = sine(F1) * sine(F2)

Sine wave with beating:    Sinetone2-1.wav Sinetone2-1.jpg
Fused-complex timbre:     Sinetone2-2.wav Sinetone2-2.jpg
Multi-pitch timbre:             Sinetone2-3.wav  Sinetone2-3.jpg
 

Frequency Modulation   ---> Y0 = sine(F1  + sine(F2))

Sine wave with beating:    Sinetone3-1.wav  Sinetone3-1.jpg
Fused-complex timbre:     Sinetone3-2.wav  Sinetone3-2.jpg
Multi-pitch timbre:             Sinetone3-3.wav   Sinetone3-3.jpg