Change Pitch of Audio: Transpose Musical Pitch Online
Shift the musical pitch of songs and vocal tracks up or down in semitones without changing playback speed or tempo.
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How to Use the Change Pitch of Audio: Shift Pitch Without Changing Speed
- 1Upload your song or audio track.
- 2Select pitch shift in semitones (e.g. +2 semitones).
- 3Download your transposed audio file.
Formula & How It Works
Rubberband Phase Vocoder Pitch Shifting
Performs frequency-domain phase vocoder analysis to shift spectral bins while preserving time duration.
Worked Examples
Transposing Vocal Key
Input: backing-track.mp3 shifted by +2 semitones
Explanation: Transposes song from C Major to D Major without altering tempo.
Frequently Asked Questions
Does changing pitch alter the song's tempo?▼
No. Our algorithm time-stretches the signal in sync so song duration and BPM remain unchanged.
Quick Reference & Conversion Table
| Semitone Shift | Musical Key Shift | Frequency Multiplier |
|---|---|---|
| +1 semitone | Up half-step | × 1.05946 |
| +2 semitones | Up whole-step (e.g. C to D) | × 1.12246 |
| -2 semitones | Down whole-step (e.g. C to Bb) | × 0.89090 |
| +12 semitones | Up 1 full octave | × 2.00000 |
⚠️ Common Pitfalls to Avoid
- •Confusing pitch shifting (same speed, different key) with varispeed tape speed alteration (changes speed and pitch together).
💡 Practical Real-World Uses
- •Adjusting karaoke backing tracks to match a singer's comfortable vocal range.
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