Synthwave

Synthwave is a frequency modulation (FM) simulation tool.

Key Features:

Real-time FM Audio Generation — Adjust carrier frequency (200-2000 Hz), modulation frequency (2-50 Hz), and modulation index (0-10) with instant audio feedback powered by AudioTrack.

Live Waveform Visualization — Watch the FM signal come alive on a real-time time-domain canvas with zoom controls and grid overlay.

Preset Library — Choose from five pre-configured modulation profiles including Gentle Vibrato, Siren Effect, Deep Bass FM, Sci-Fi Tone, and Bell Chime.

Interactive Learning — Explore FM theory with clear explanations of the modulation formula, parameters, phase continuity, and real-world applications.

How It Works:

The app implements the standard FM equation: Instantaneous Frequency = fc + Δf × sin(2π × fm × t), where fc is the carrier frequency, fm is the modulation rate, and Δf is the frequency deviation controlled by the modulation index.

Synthwave is lightweight, requires no special permissions beyond internet access (for the privacy policy page), and stores all data locally on your device.