Audio Frequency Tester
Test your speakers and hearing with precise frequency tones from 20Hz to 20kHz.
Deep bass felt more than heard. Tests subwoofer capability.
Low-end punch and warmth. Essential for music.
Body and fullness of sound. Vocals and instruments.
Most important for speech clarity and presence.
Definition and attack. Ear is most sensitive here.
Brilliance and air. High frequencies for detail.
🔊 What is an Audio Frequency Tester?
An Audio Frequency Tester is a tool that generates precise sound waves at specific frequencies, measured in Hertz (Hz). This free online frequency generator allows you to test your speakers, headphones, subwoofers, and even your own hearing range by producing tones from 20Hz (deep bass) to 20,000Hz (high treble).
Human hearing typically ranges from 20Hz to 20kHz, though this varies significantly by age and individual. Our frequency tester uses the Web Audio API to generate accurate sine waves, square waves, sawtooth waves, and triangle waves — useful for audio testing, music production, speaker calibration, and hearing assessments.
🎯 Common Uses for Frequency Testing
| Use Case | Frequency Range | What You're Testing |
|---|---|---|
| Subwoofer Test | 20-80 Hz | Bass response and rattles |
| Speaker Balance | 200-4000 Hz | Midrange clarity and consistency |
| Tweeter Test | 4000-20000 Hz | High-frequency reproduction |
| Hearing Test | Full range sweep | Personal hearing limits |
| Room Acoustics | 20-200 Hz | Standing waves and dead spots |
| Headphone Check | Full range | Driver matching and frequency response |