Booster Volume

Voice & Speech Booster

Speech intelligibility depends far more on a narrow band around 2–4 kHz than on overall volume. This tool lifts that band with a peaking filter, applies compression to even out inconsistent speakers, and adds gain afterwards — the combination that makes quiet dialogue actually understandable.

Make speech clearer

Voice boosterPresence peaking filter and compression, tuned for speech, 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.

Why this works better than volume

Consonants — the sounds that distinguish words — are quiet and high in frequency. Vowels are loud and low. When a recording is difficult to follow, it is usually because the consonants are being masked, not because the whole thing is too quiet.

Raising the presence range lifts the consonants specifically. Compression then closes the gap between a speaker who leans into the microphone and one who sits back from it. Neither of those is something plain gain can do.

Good candidates for this tool

Lecture and meeting recordings
Distant microphone, one loud presenter and several quiet questions from the room.
Films with quiet dialogue
A 5.1 mix folded down to stereo often buries the centre channel, where dialogue lives. See volume booster for movies.
Interviews and podcasts
Guests recorded on different equipment at different distances.
Voice memos and phone recordings
Low bandwidth and heavy background noise.

Frequently asked questions

Does this remove background noise?

No. It is not a noise suppressor — it lifts a frequency band and evens out level. Background noise in that band will be lifted along with the speech. Compression can make steady noise more noticeable during pauses, because it raises quiet moments.

Will it help with a heavy accent or fast speech?

It can make consonants clearer, which helps somewhat. It cannot change pace or pronunciation.

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