BandPass

BandPass Audio Filter - See and hear sounds like never before.

Isolate frequencies in real-time with a beautiful, responsive spectrogram. Perfect for diagnosing mechanical noises, analyzing speech, or exploring the world of sound.

Features:

• Real-time bandpass filtering - Touch-drag to isolate any frequency range

• Dual visualization modes - Waterfall spectrogram or spectrum analyzer bars

• Instant feedback - Hear the filtered result as you adjust

• Built-in presets - Voice (85Hz-3kHz), Rumble (20-250Hz), Whine (2-8kHz)

• Adjustable gain - Boost quiet signals up to 10x

Pro Features ($2.99 one-time):

• Unlimited recording with WAV export

• Playback with real-time filter adjustment

• Save and load custom frequency presets

• Multiple color themes

• No ads, full-screen visualization

Ideal for:

• Mechanics diagnosing engine/transmission noises

• HVAC technicians tracking rattles and vibrations

• Musicians analyzing harmonics and overtones

• Ghost hunters (we don't judge)

• Audio engineers on the go

Note: Headphones required for live feedback to prevent audio loops.