Sonic AI voice generator & voice changer
Speak as Sonic the Hedgehog, the cocky blue speedster voiced by Roger Craig Smith. Type text and hear it in Sonic's voice (text to speech), record or upload your own voice to change it, or make a song cover. Free, no signup.
- 1Pick a voice
- 2Record, upload a file or song, or type text
- 3Listen, download and share
Auto pitch moves your voice into Sonic's range. If it sounds too high or low, nudge the slider (12 = one octave).
Pick a voice
About the Sonic voice
Sonic the Hedgehog is a fictional character: a cocky blue hedgehog who runs faster than the speed of sound. Created by Sega, he is the star of the long-running Sonic the Hedgehog video game series, which has also grown into animated shows, comics and live-action films. In this catalog, the voice is modeled on the performance of Roger Craig Smith, who has voiced the character in many games and animated projects.
Expect a bright, youthful, energetic voice with a confident edge. The pitch sits in a lively mid-to-upper range, the pace is quick and punchy, and the delivery leans on sarcasm, swagger and playful one-liners. Sonic sounds like someone who is always in motion and enjoys teasing his rivals, but he can also turn sincere and determined when the moment calls for it.
On voicechange.io you can record or upload your own speech and hear it converted to Sonic, type text to hear it spoken in this voice, or make a song cover. The pitch is matched to the voice automatically, so you don't need to adjust it. For the best results, speak with plenty of energy and a clear, upbeat attitude, and keep your pacing brisk. Short, punchy lines with a confident grin work especially well, while flat or mumbled delivery will sound less convincing.
Voice details
| Category | Cartoons & TV |
|---|---|
| Model type | RVC voice conversion model (fan-made) |
| Centre pitch | About 170 Hz, a mid-range voice |
| Works with | Recordings, uploads, text to speech and song covers |
| Last updated | October 27, 2026 |
Tips for the best Sonic result
This model is centred around 170 Hz. With auto pitch on, a typical deeper voice (around 120 Hz) is shifted about 6 semitones up, and a typical higher voice (around 210 Hz) isn't shifted, since it already fits. Gaps under 4 semitones are left alone, and shifts stop at one octave. If the result sounds strained, nudge the slider one or two steps back toward your own voice; for song covers, keep it at 0, +12 or −12 so the vocal stays in key. How pitch works.
- Record in a quiet room with no music in the background; noise is the main cause of robotic-sounding results.
- Perform the line the way Sonic would say it. The model copies your timing and emotion, only the voice changes.
- For song covers, pick a track with one clear lead vocal and little reverb.
This is a fan-made AI voice model. voicechange.io is not affiliated with or endorsed by Sonic, the voice actors or the rights holders. Please label shared results as AI and don't use them to mislead anyone. Rights holders can request removal on the contact page.
Sonic voice questions
Is the Sonic AI voice free?
Yes. You can use the Sonic voice on voicechange.io for free with no account: type text, change a recording or make a song cover. Free downloads keep up to 3 minutes per clip.
Can I use the Sonic voice live on Discord?
Not this model: website voices convert recordings and text, which takes 10 to 60 seconds. For a live voice in Discord, games or Zoom, use the free VoiceChange desktop app, which runs its own voices in real time.
How do I make my voice sound more like Sonic?
The model is centred around 170 Hz, a mid-range voice. Leave auto pitch on so your recording is shifted into that range, record in a quiet room, and copy how Sonic speaks: the model keeps your timing and emotion and changes only the voice.
Is this the official Sonic voice?
No. It is a fan-made AI voice model and is not affiliated with or endorsed by Sonic, the voice actors or the rights holders. Please label anything you share as AI.
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