MirrorAccent

home page
recording page
result page

Inspiration

I’ve tried learning accents before and it always felt like guessing. You can listen to native speakers all day, but it’s hard to tell what you should change. I wanted something that makes the target obvious, fast.

What it does

MirrorAccent is an accent practice app. You record yourself, pick an accent, and it plays back your voice transformed into that accent. Then it gives you some nerdy but useful feedback (pitch, vowel/formant stuff, volume, speed, timing) so you know what to tweak.

How we built it

It’s an Electron desktop app. The “make me sound American” part uses ElevenLabs voice changer (Speech-to-Speech). The prosody analysis is powered by custom logic: pitch tracking (YIN), vowel/resonance comparison (LPC/formants), plus intensity and speaking-rate calculations.

Challenges we ran into

Setup stuff (mic selection + ElevenLabs key + speech_to_speech permissions) was always more annoying than it should have been.

Accomplishments that we're proud of

Hearing the “goal” in your own voice is honestly the best part; it clicks immediately.
The prosody scores are actually helpful instead of just hand-waving it.
It’s simple: record → transform → learn → repeat.