Audio Mixer
Merge and mix multiple audio tracks with professional control
Main Audio Track (Background)
Upload main audio file
Supports MP3, WAV, OGG, M4A (Max 200MB)
Overlay Audio Tracks
Add overlay audio files
Max 5 files, 20MB each
No overlay tracks yet
Mix Controls
Actions
💡 Tips
- • Upload a base track first, then add overlays
- • Use fade effects for smooth transitions
- • Adjust volumes to balance audio levels
- • Preview before mixing to check timing
- • WAV format provides best quality
When to Use Audio Mixer
Podcast Production
Mix voice recordings with intro/outro music, sound effects, and background audio to create professional podcasts
Audio Advertisements
Combine voice-overs with background music and jingles to create compelling radio or digital audio ads
Music Remixing
Layer multiple audio tracks, add samples, and create custom music mixes with precise timing control
Video Audio Tracks
Create custom audio tracks for videos by mixing narration, music, and sound effects with perfect synchronization
Educational Content
Combine lecture audio with background music or sound cues to enhance educational materials and e-learning courses
Audio Presentations
Mix slides audio narration with intro music and transitions to create professional presentation recordings
Frequently Asked Questions
What is an audio mixer tool?
An audio mixer tool allows you to combine multiple audio files into a single track with professional control over timing, volume, fade effects, and trimming. Our online mixer lets you upload a main audio track and overlay additional audio files at specific timestamps, with customizable fade-in/fade-out effects and volume levels, perfect for creating podcasts, music mixes, or audio presentations.
How do I use this audio mixing tool?
Using our audio mixer is simple: 1) Upload your main audio track (background or base audio), 2) Add overlay audio files you want to mix in, 3) For each overlay, set the start time (when it should play), trim duration, fade effects, and volume level, 4) Preview your mix to ensure it sounds right, 5) Click 'Mix Audio' to combine all tracks, 6) Download the final mixed audio file. The tool processes everything in your browser for maximum privacy.
Is this audio mixer free to use?
Yes, our audio mixer is completely free to use with no registration required. You can mix unlimited audio files, use all fade effects, trim audio, adjust volumes, and download your mixed audio without any cost. There are no watermarks, time limits, or hidden fees.
What audio formats are supported?
Our audio mixer supports all major audio formats including MP3, WAV, OGG, M4A, FLAC, and AAC. The tool uses your browser's native audio capabilities to decode these formats. The final mixed output is provided in WAV format for highest quality, which you can convert to other formats if needed.
Can I control when each audio plays?
Absolutely! For each overlay audio track, you can specify the exact timestamp when it should start playing in the main audio. This allows you to precisely position voice-overs, sound effects, or music segments at specific moments, creating a professional-sounding mix with perfect timing control.
What are fade-in and fade-out effects?
Fade-in gradually increases audio volume from silence to full volume at the start of a clip, while fade-out gradually decreases volume to silence at the end. These effects create smooth transitions and prevent abrupt starts or stops, making your audio mix sound more professional and polished. You can set custom fade durations for each audio track.
Is my audio data secure?
Yes, your audio files are completely secure. All audio processing happens entirely in your browser using Web Audio API - your files never leave your computer or get uploaded to any server. This ensures complete privacy for your audio projects. Once you close the browser, all data is immediately cleared.
Can I preview the mix before downloading?
Yes! Before creating the final mix, you can preview how all your audio tracks will sound together. The preview plays the main audio with all overlay tracks at their specified times, volumes, and fade effects, allowing you to make adjustments before generating the final mixed file.
Edit Overlay Track
When this overlay should start in the main audio
0 means play until end
No comments yet. Be the first to share your thoughts!