Free Audio Panner Online | Left & Right Channel Splitter | WebToolsPro

Audio Panner & Stereo Splitter

Shift your audio entirely to the left or right ear channel. Great for ASMR or testing headphones.

Note: To ensure your browser doesn't crash during processing, please upload files under 20MB and shorter than 7 Minutes.

Processing...

Click to Upload Audio File

Supports MP3, WAV, M4A, OGG (Max 20MB / 7 Mins)

track_name.mp3
00:00 / 00:00
Stereo Balance Control
0% (Center)
Left Center Right

How To Use

Upload: Click the box and select any music or audio file (max 20MB) from your device.
Slide to Pan: Move the large slider to the left or right to push the audio into that specific ear channel.
Export Lossless: Once you are satisfied, click 'Export as WAV' to download the processed, split audio safely to your device.

Why Use This Tool?

ASMR Creators: Panning is the secret behind "tingly" ASMR audio. Shift triggers completely to one ear for maximum effect.
Test Headphones: Think one side of your earphones is broken? Hard pan the audio to check if both left and right speakers are working perfectly.
Fix Broken Audio: If you recorded a video with a microphone that only captured sound on the left side, use this tool to recenter the balance.

Frequently Asked Questions

Why does the export save as a WAV file instead of MP3?

WAV is an uncompressed, universal audio format. When you apply stereo panning and re-render the file, saving it as a WAV ensures that the channel split retains its pure original quality without suffering from MP3 double-compression issues.

Is my audio uploaded to a server?

No. This tool utilizes the Web Audio API's StereoPannerNode technology. The entire audio shifting process, including playback and final WAV exporting, happens 100% locally inside your browser's memory. It is extremely fast and completely private.