Tone Generator

What this is good for

• Speaker / headphone test — confirm both channels work, check frequency response
• Hearing range test — sweep upward, see where you stop hearing it (most adults lose hearing above 15-17 kHz)
• Tuning reference — 440 Hz is concert A; many tuners reference this
• Tinnitus matching — find the frequency that matches your tinnitus tone (use carefully)
• Ear training — interval identification, pitch recognition

Be careful

Pure tones at high volume can cause hearing damage faster than music. Start at 10-20% volume and raise gradually. Avoid prolonged exposure to single frequencies above 8 kHz.

Privacy

Sound is generated locally via the Web Audio API. Nothing is uploaded.