MP3Conv

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Voice Changer

Shift pitch and formant independently. Subtle gender-neutral, deeper, higher, or full character voice.

Negative = lower pitch. Positive = higher pitch.

Below 1× = smaller speaker. Above 1× = bigger speaker.

About this voice changer

A pitch + formant shifter that decouples pitch from speaker size. Pitch controls how high or low the voice sounds; formant controls how big the speaker seems (small = chipmunk, big = giant). Independent control gives you natural-sounding shifts that don't go full-chipmunk or full-demon.

Useful for podcast voice anonymization, character voices in games, gender-neutral narration, or just making your voice sound different on a video call.

How to change a voice

  1. 01

    Drop in a voice recording

    MP3, WAV, FLAC — any voice audio.

  2. 02

    Set pitch + formant

    Pitch in semitones, formant 0.5×–1.5×. Smaller formant = smaller-sounding speaker.

  3. 03

    Render and download

    Output is a 192k MP3 with the voice transformation baked in.

Why use this voice changer

  • Independent pitch + formant control
  • Pitch range ±12 semitones
  • Formant range 0.5×–1.5× (smaller / bigger speaker)
  • Output is universal MP3 at 192k
  • Free, private, no install
  • Useful for anonymization, character voices, video voice-overs

Voice changer FAQ

What's the difference between pitch and formant?

Pitch is how high or low the voice plays. Formant is how big the speaker sounds — the resonance of their throat and vocal tract. Shifting only pitch makes a chipmunk; shifting both gives a natural deeper / higher voice.

Can I make my voice gender-neutral?

Yes — set pitch to a small negative or positive shift (±2-3 semitones) and adjust formant slightly in the same direction. The combo gives a more believable result than either alone.

How extreme can I go?

Up to ±12 semitones pitch and 0.5×–1.5× formant. Past that the audio gets noticeably artifacted.

Is my file kept private?

Yes. We don't analyse or index your audio.

Pitch, speed, vocals, bass

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