Speed Change
Adjust audio playback speed (0.5x ~ 2.0x)
Speed Change Info
- Adjust speed from 0.5x to 2.0x
- Natural voice with pitch preservation
- Perfect for lectures, podcasts, audiobooks
- Supports all audio formats
Audio Speed Changer: Adjust Playback Speed and Pitch
Change the playback speed of your audio. Optionally keep the pitch the same or let it change with the speed.
How to Use
1. Upload Audio File
Select or drag and drop the audio file you want to adjust.
2. Set Speed
Choose a speed from 0.5× (slower) to 2.0× (faster).
3. Convert & Download
Click apply and the speed-adjusted audio file will be generated.
Key Advantages
Pitch Preservation
Keep the voice or pitch unchanged even when the speed is altered.
Fine-Grained Control
Adjust speed in 0.1× increments for precise control.
High-Quality Algorithm
Advanced time-stretching technology minimizes audio quality degradation.
Preview
Listen to the speed-adjusted result before conversion.
Use Cases
Efficient Learning
Speed up lectures or audiobooks to 1.5–2× to cut study time.
Transcription Work
Slow down interviews or meeting recordings for accurate transcription.
Music Practice
Play fast songs at a slower speed for instrument or dance practice.
Special Effects
Use the pitch-change option to modulate voices or create fun sound effects.
Pro Tips
1.25–1.5× Recommended
1.25–1.5× speed is natural and easy to follow for lectures and podcasts.
Enable Pitch Preservation
For voice content, turn on pitch preservation to keep it sounding natural.
Music Practice Tip
0.7–0.8× is ideal for music practice; keep pitch preservation on.