Speed & Pitch Changer
Independent control over playback tempo and musical pitch
Drop track to shift speed and pitch
Single File • Max 1GB
Smart Processing
Tempo and pitch are decouple using Phase Vocoder tech.
Pro Quality
Granular semitone control for perfect transposing.
Smooth Speed
Adjust from 0.25x to 2.0x without resampling artifacts.
Controls
Speed changes do not affect pitch. Pitch shifts are counted in semitones (12 semitones = 1 full octave). Perfect for transposing or tempo matching.
Your audio is processed locally in your browser. No data ever leaves your device.
What is Audio Speed & Pitch Changer?
Our Audio Speed & Pitch Changer is an easy-to-use tool for changing how fast your audio plays and shifting its musical pitch independently. Whether you want to slow down a song to learn the notes, speed up a podcast to save time, or change the key of a track to match your voice, we've got you covered. Since everything happens right in your browser, your audio files are never uploaded to our servers, keeping your recordings 100% private and secure.
Key Features & Benefits
Independent Control
Change the speed of your audio without changing the pitch, or change the pitch without changing the speed.
Musical Accuracy
Shift your audio's key precisely using semitones, making it easy to transpose music to fit your needs.
No Distortion
Our advanced processing makes sure your audio sounds natural, even when you make big changes to the speed or pitch.
Totally Private
All the work happens on your own computer. Your files stay with you and never leave your device.
How to Use the Audio Speed & Pitch Changer
Upload Your File
Select the audio track you want to change.
Change the Speed
Use the speed slider or buttons to make the audio play slower (0.25x) or faster (2.0x).
Shift the Pitch
Adjust the pitch slider to change the key of the audio in semitones (like moving up or down an octave).
Apply and Download
Click 'Apply Changes' to update your audio locally, then download your finished track.
Practical Use Cases
Learn Music
Slow down fast musical parts without changing the key, making it much easier to learn by ear.
Karaoke and Singing
Change the key of a backing track to perfectly match your vocal range for a more comfortable performance.
Listen Faster
Speed up long podcasts or audiobooks to get through the information more quickly.
Sync with Video
Adjust an audio track's length so it perfectly matches the timing of your video clips.
FAQs
Does changing speed affect the pitch?
No, our algorithm uses time-stretching to change the speed independently, keeping the vocal pitch consistent unless you explicitly adjust it.
What is a semitone in pitch shifting?
A semitone is the smallest interval in Western music (like moving from one piano key to the next). Shifting +12 semitones makes the audio exactly one octave higher.