Booster Volume

Online Treble Booster

A treble booster lifts high frequencies, the range that carries consonants, cymbal detail and the sense of "air" in a recording. It is the right tool when audio sounds muffled or as if it is playing through a blanket — a problem that more volume makes louder but no clearer.

Lift the high end

Treble boosterAdjustable high-shelf filter into gain and limiting.

Drop an audio or video file here, or choose one. It is processed on your device and never uploaded.

Processed on your device — nothing is uploaded. Loud audio can damage hearing: lower your system volume before boosting, then raise it gradually.

Clarity is not the same as loudness

When people say audio is too quiet, they sometimes mean they cannot make out what is being said. Those are different problems. If a recording is muffled, turning it up produces louder mumbling. Lifting the high end recovers the consonants that carry meaning — the difference between "cat" and "cap" lives above 2 kHz.

For speech specifically, the voice booster is more targeted: it lifts a narrower band centred on intelligibility rather than everything above the cutoff.

Frequently asked questions

Can treble boost fix audio recorded through a phone in a pocket?

Only partially. If the high frequencies were physically blocked at the microphone, they were never recorded, and no filter can restore information that is not there. Boosting will raise whatever residual high-frequency content exists, along with the noise.

What cutoff should I use?

Start around 4 kHz for speech clarity and 8 kHz for adding air to music. Lower cutoffs affect more of the signal and get harsh faster.

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