🎵 Audio Speed Changer

Professional audio speed changer that allows you to adjust audio playback speed from 0.25x to 4x using Web Audio API. Perfect for speeding up podcasts, slowing down music for learning, or creating audio effects. Features real-time preview and high-quality WAV export.

Upload Audio File:

Supported formats: MP3, WAV, OGG, M4A, FLAC. Maximum size: 100MB.

Speed Rate:

Choose the desired playback speed. Values below 1.0x slow down audio, above 1.0x speed it up.

Audio Speed Changed:

🎵 AUDIO PROCESSED

podcast_episode.mp3 → Speed: 1.5x

Duration: 45:30 → 30:20 (faster)

📊 Audio Information

Speed Rate

1.5x

Faster

Duration Change

-15:10

Reduced

Audio Quality

44100Hz

2ch

🎧 Audio Preview

Ready to play

💾 Download Modified Audio

Modified audio exported as high-quality WAV format

🔧

JavaScript Required:

This audio speed changer requires JavaScript for Web Audio API processing and audio manipulation.

How to Use This Audio Speed Changer

["Click 'Choose File' or drag and drop your audio file (MP3, WAV, OGG, M4A, FLAC)", 'Select your desired speed rate from 0.25x (very slow) to 4x (ultra fast)', "Click 'Change Audio Speed' to process your file using Web Audio API", 'Preview both original and modified audio using the built-in players', 'Download your speed-adjusted audio as high-quality WAV format']

How It Works

['Upload your audio file - supported formats include MP3, WAV, OGG, M4A, and FLAC', 'Web Audio API decodes your audio into a high-quality digital buffer', 'Advanced resampling algorithms adjust the playback speed while maintaining audio integrity', 'Preview system lets you compare original vs. modified audio before downloading', 'Export as uncompressed WAV format for maximum compatibility and quality']

When You Might Need This

• Speed up podcasts and lectures to save time while maintaining comprehension
• Slow down music tracks to learn complex guitar solos or piano pieces
• Adjust voice recordings and interviews for better clarity and understanding
• Create audio effects for video content and social media posts
• Change audiobook narration speed to match your preferred listening pace

Frequently Asked Questions

What audio formats can I upload?

The tool supports MP3, WAV, OGG, M4A, and FLAC formats - covering virtually all common audio files you'll encounter.

Does changing speed affect audio quality?

Moderate speed changes (0.5x to 2x) maintain good quality. Extreme adjustments may introduce artifacts, but the Web Audio API ensures the best possible results.

Can I preview the audio before downloading?

Yes! You can play both the original and speed-adjusted audio directly in your browser to ensure it sounds exactly how you want before downloading.