Book of Sound

BLUESTEIN FFT

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Bluestein FFT — Interactive Demo

Demonstration of Bluestein (chirp-Z) algorithm for arbitrary-length DFTs. Uses default audio; slide window size and watch the spectrum of the current playback frame.

clean UI • demo
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Algorithm: Bluestein (chirp convolution)
Notes: This demo uses an internal JS FFT (radix-2) and Bluestein to compute a DFT of the chosen window size. For non-power-of-two sizes Bluestein zero-pads and uses a power-of-two convolution FFT under the hood.

greg hunter

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