A potentially gentle introduction to the Fourier Transform and it’s applications in audio processing. This talk offers an accessible overview for and applications of the Fourier transform and its derivatives: the Fourier Series, Discrete Time Fourier Transform, and the FFT. The following topics will be covered:

-The biological basis for how frequency and time are perceived
-A manual calculation of the Fourier Series for a square wave and analysis of its components
-The time–frequency uncertainty principle
-Combining signals: multiplication and convolution
-The impulse and its response.
-Applications, including filtering, modulation and information compression.
-Measuring frequency spectra of signals at the library.
-Some calculus and trigonometry will be shown, but math skills are not required to get intuition and delight!


Presented by Lewis Guignard

Sunday, May 25th, 2025
1 pm - 2:30 pm
@ 1256 Lloyd Center (view map)
2nd Floor, near Dicepool

$10-20 sliding scale
(tickets required to attend, no one turned away for lack of funds, email info@synthlibraryportland.org for no-cost tickets)