Online Tone Generator
Slow down or speed up your audio files, simple and free.
Our advanced online time stretching tool lets you modify the playback speed of any audio file (MP3 or WAV format) while perfectly preserving the original pitch. Whether you need to slow down music for practice or speed up podcasts for faster listening, our algorithm maintains crystal clear audio quality throughout the tempo adjustment process.
How to use our audio time stretcher:
1. Click "Choose File" to upload your audio track (supports most common formats)
2. Use the intuitive tempo slider to adjust playback speed from 50% to 200%
3. Play back the modified audio directly in your browser with zero quality loss
4. Download your time-stretched file for offline use (coming soon!)
Practical applications include:
• Music practice - Slow down complex solos without pitch distortion
• Audio transcription - Speed up interviews while maintaining clarity
• DJ preparation - Test track tempo compatibility before mixing
• Language learning - Adjust speech speed for better comprehension
• Podcast listening - Customize playback speed to your preference
Unlike basic speed changers, our proprietary time-stretching algorithm uses advanced phase vocoding technology to ensure natural-sounding results at any tempo. The process happens entirely in your browser - no server uploads required for maximum privacy and instant processing.