Frequency Sweep Test

Play a continuous frequency sweep from 20Hz to 20kHz to test your speakers or headphones across the full audible range. Listen for gaps, distortion, or drop-offs that reveal frequency response issues. A browser-based hearing test is a simple way to track whether your high-frequency hearing is declining.

Frequency Sweep

Set your parameters and press Start Sweep to begin.
Quiet Loud
-- Hz
Current Frequency
20 Hz 20,000 Hz

How to Use the Frequency Sweep Test

A frequency sweep (also called a sine sweep or chirp) plays a tone that continuously changes pitch from your chosen start frequency to the end frequency. This is the most efficient way to assess the frequency response of any audio device in one continuous pass. The tone generator includes musical note presets so you can target specific pitches for instrument tuning.

A slow sweep gives your ears more time to detect subtle roll-offs and dips across the range. A fast sweep is better for a quick overview, highlighting any major gaps in your speaker's response. The mosquito tone test is a quick hearing health check — most adults over 25 cannot hear the 17.4kHz test tone.

What to Listen For
  • Volume dips: Indicate weak frequency reproduction
  • Buzzing or rattling: Suggests driver or enclosure resonance
  • Complete silence: Speaker cannot reproduce that range
  • Harsh peaks: Frequency boost causing fatigue
Tips for Best Results
  • Start at a comfortable volume, not maximum
  • Use a slow sweep (20–30s) for detailed analysis
  • Test left and right separately if possible
  • Try ping-pong mode to check for channel differences
Understanding Frequency Ranges
20–80 Hz
Sub-bass. Felt more than heard. Tests subwoofers.
80–300 Hz
Bass. Warmth and punch. Core speaker test range.
300 Hz–4 kHz
Midrange. Voices, guitars, most instruments.
4–20 kHz
Treble & presence. Clarity, air, and detail.