Free software1 sections · 2 min readBy Dezső Mező.mdFree softwareSpectra
Spectra is an interactive Fourier-transform explorer that decomposes a signal into its constituent frequencies and shows the time- and frequency-domain views side by side. The signature technique is a from-scratch radix-2 Cooley-Tukey FFT with a Hann window, verified against its own mathematical identities such as Parseval energy conservation and an exact inverse round-trip. It is a dependency-light build you can download and run locally.
01About the app
Signal processing
What to take away
- A radix-2 Cooley-Tukey FFT (and inverse) with a Hann window, driving paired time- and frequency-domain views. 14 tests using the transform's own identities - Parseval energy conservation, exact inverse round-trip.
- Download: Spectra (ZIP)
More from the lab
Browse all entries- Sylex: Make sense of the slashes
- Kindra: Miss a beat, not the rhythm
- Voxara: Argue better. Lose gracefully
- Wraithward: Spot the bait before you bite
Want this looked at on your own system?Start a conversation
