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

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Sunday, May 25th 2025
1:00 PM - 2:30 PM

1256 Lloyd Center
2nd Floor, near Dicepool
All ages (10+ recommended)
$10-20 sliding scale
Tickets are required to attend. No one is turned away for lack of funds, so email info@synthlibraryportland.org for lower/no-cost tickets.