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Tier A - Direct Browser Interaction Ready

Audio Frequency Generator & Sweep Test (20Hz-20kHz)

Sweep frequencies from 20 Hz to 20,000 Hz to test bass, midrange, and treble. Generates calibrated sine wave tones across human audible frequencies to evaluate speaker drivers and low-frequency bass reproduction.

Frequency Oscillator Lab

440 Hz (Concert A4)
Frequency Slider (20 Hz – 20,000 Hz) Drag or use presets below
30%

How to use this test

  1. Start at a low volume to protect hearing.
  2. Choose a frequency preset or continuous sweep.
  3. Click 'Play Tone'.
  4. Verify acoustic output across sub-bass, mid, and high frequencies.
  5. Click 'Stop Tone'.

How to understand your result

Looks good: Frequencies generated smoothly without speaker buzzing or clipping.

Troubleshooting: what to try next

  • Small smartphone or laptop speakers physically roll off bass below 100Hz.

What this test cannot tell you

Compact laptop speakers cannot reproduce deep sub-bass frequencies below 80Hz.

Frequently Asked Questions

EP
Tested & Reviewed by [REAL AUTHOR NAME - OWNER TO COMPLETE]
Last Reviewed: 2026-10-17 • Test Method: Web Audio OscillatorNode sine wave generation with safety gain • How We Test