Measure how cleanly your speaker reproduces bass, mids, and treble across the audible spectrum.
Try it now
The same three-band frequency response audio the Android app plays. Listen to bass, mids, and treble in sequence — and hear exactly where your speaker stumbles.
Before you start: unplug headphones, point your speaker toward the floor, and set your device volume to a comfortable level. This page runs the same tone the Android app uses, in your browser.
The track sweeps each frequency band in order. Note which sections drop out or sound distorted — that’s where your speaker is struggling.
Bass · 20 – 250 Hz
Body and weight. Drops here mean a clogged grille or aging driver.
Mid · 250 Hz – 4 kHz
Voices and dialogue clarity. Most muffling shows up here first.
Treble · 4 – 20 kHz
Sparkle and detail. Sandy treble usually means lint in the mesh.
A speaker can pass a generic sound test and still fall flat in the bass or sound brittle in the treble. Frequency Test isolates each band so you know exactly where your speaker is strong and where it struggles.
Three sweeps cover the full audible range. If you hear noticeable drop-outs in the bass band, the driver may be loose. If treble sounds harsh or thin, the grille may still hold dust.
Step by step
Listen for deep, even output. A weak bass response usually means a clogged grille or aging driver.
This is the range that carries voices. Drops here cause muffled calls and unclear dialogue in videos.
Sharp, clean highs mean an open grille. Sandy or harsh treble points to lint stuck in the mesh.
Common questions
Phone speakers are physically small and rarely reproduce below ~80 Hz well. Missing 20–80 Hz is normal. Concern starts when 100–250 Hz is also weak.
That's almost always lint stuck in the grille mesh. Run Dust Removal, then re-test.
No — the test is for the built-in speaker. Headphones would give you their frequency response, not the phone's.
Keep exploring
Verify your speaker is clear and distortion-free with a thirty-second audio quality check.
Learn moreLoosen lint, dust, and pocket fluff from speaker grilles with controllable sine tones and motor vibration.
Learn moreBest practices that keep phone speakers crisp month after month — what to do, what to avoid.
Learn moreFree download
Available on Google Play. 47 languages, Android 11 and up.
