mimigarFFT

FFT Analyzer is a precision real-time audio spectrum analyzer designed for acoustic measurement. It captures audio from your device's microphone, performs FFT analysis, and displays the frequency spectrum in both linear and logarithmic scales.

Key Features:

✔️ Real-time FFT spectrum display with linear and logarithmic frequency scales

✔️ Configurable sample rates: 16 kHz, 44.1 kHz, and 48 kHz

✔️ Multiple FFT point sizes for adjustable frequency resolution

✔️ Window functions: Rectangular and Hann

✔️ IIR digital filters: Butterworth and Chebyshev Type I (Low-pass, High-pass, Band-pass, Band-stop)

✔️ Time constants and averaging mode for stable measurements

✔️ Target frequency range with in-band level readout

✔️ Tap-to-select frequency and dB display

✔️ Pinch-to-zoom and pan on the frequency axis

✔️ Draggable dB axis for adjusting the display range

✔️ Clip detection indicator

✔️ USB microphone support with direct audio driver for consistent measurements across devices

✔️ Microphone calibration via the Mimigar calibration service for traceable SPL readings

✔️ Dark theme optimized for field use

Built for engineers, acousticians, and audio professionals who need reliable spectral analysis on mobile.