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wat-fft Playground

Real-time FFT performance comparison

Spectrogram

Live Analyzer

Implementation

wat-fft (this project)

Combined f64 auto

Stockham f64 SIMD

f32 Dual fastest

Real FFT f64 real

Real f32 fast real

Alternatives

fft.js JS radix-4

fft.js Real JS real

fft-js JS Cooley-Tukey

FFTW WASM port

FFTW Real WASM real

KissFFT WASM port

Spectrogram

FFT Size 1024

Hop Size 128

Zero Pad 2x

Window

Display

Gain (dB) -20 dB

Range (dB) 80 dB

Freq Scale

Linear

Log

Mel

Min Freq 50 Hz

Max Freq 8 kHz

Colors

Magma

Inferno

Viridis

Hot

Gray

Source Type

Synthetic

File

Record

Generation

Duration 2.0s

Sample Rate 44.1k

Sine Waves

Using: wat-fft Combined

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FFT (ms)

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Total (ms)

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FFTs/sec

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Frames