Tone Generator: Sine Wave

Tone Generator is an audio frequency generator, sine wave oscillator, and signal generator for Android. Generate pure tones from 1 Hz to 22 kHz with sine, square, sawtooth, and triangle waveforms, frequency sweep, and dual-tone output — replace expensive lab equipment with the phone you already carry. ▶ MAIN FEATURES • Sine, square, sawtooth, and triangle waveforms • Full 1 Hz – 22 kHz frequency range with 0.1 Hz precision • Frequency sweep mode (rises or falls over time) • Dual-tone and stereo output with independent channels • Adjustable volume and left/right balance • Precise frequency entry by slider or number • Function generator and signal generator in one app • Speaker, subwoofer, and hearing test tones • Dark mode for studio and night use • Works fully offline — no internet required ▶ HOW TO USE 1. Pick a waveform (sine gives the cleanest pure tone). 2. Set the frequency with the slider or type an exact value (e.g. 440 Hz). 3. Adjust the volume to a safe, moderate level. 4. Tap Play — the tone outputs instantly. 5. Use sweep or dual-tone mode for response and channel testing. ▶ WHO USES TONE GENERATOR • Audio and AV engineers calibrating systems • Musicians and instrument tuners working to exact Hz • Speaker and subwoofer testers checking drivers • Electronics hobbyists testing circuits and filters • Science and physics students exploring sound and frequency • Hearing-range testers generating reference tones Use a moderate volume to protect your hearing and your speakers — high-frequency tones at high levels can cause damage. Start low and increase gradually.