Audio Panner & Balance Controller
Uses the Web Audio equal-power StereoPannerNode. Pan −1 moves sound left, +1 moves it right, and 0 centers it. The rendered output always contains two channels.
About this audio panner & balance controller
Audio Panner & Balance Controller — browser-based utility.
How this tool works
Uses the Web Audio equal-power StereoPannerNode. Pan −1 moves sound left, +1 moves it right, and 0 centers it. The rendered output always contains two channels.
- Download the example file and select it in the file input.
- Set the visible controls to: Pan (-1 left, +1 right) = 1
- Click “Process locally”.
- Download the result and inspect: czoa-audio-panner.wav — PCM16; 48000 Hz; 2 channels; 72000 frames; left = 0
Worked example
Scenario: Example file: /examples/audio-stereo.wav; Download the example file and select it in the file input. Set the visible controls to: Pan (-1 left, +1 right) = 1 Click “Process locally”. Download the result and inspect: czoa-audio-panner.wav — PCM16; 48000 Hz; 2 channels; 72000 frames; left = 0
Sample input:
Illustrative output:
Limits and verification
Pan must be −1 to +1. Only mono and stereo sources are accepted. Centered mono is spread across two channels with equal-power gains. Stereo channels may sum at the extremes and PCM export clips amplitudes beyond ±1.
Examples demonstrate an expected workflow; they do not prove every input or every branch of an external specification. Check important results with an independent source before using them for money, security, compliance, safety, or irreversible file changes.
Browser processing boundary
Tool input is processed by code running in the browser and is not intentionally sent to a CZOA processing API. The page can still request ordinary site assets, analytics, or advertising when those services are enabled. Browser extensions and managed-device software remain outside this tool's control.
Relevant references
These references govern or help explain the format, protocol, or calculation used here. Listing a reference does not claim certification or complete implementation of every optional feature.
- W3C Web Audio API 1.0 — browser decoding and offline rendering
- Microsoft RIFF/WAVE PCM and WAVEFORMATEXTENSIBLE
Content owner: CZOA Tools · Last reviewed: 2026-09-15 · Review methodology
How to use it
- Download the example file and select it in the file input.
- Set the visible controls to: Pan (-1 left, +1 right) = 1
- Click “Process locally”.
- Download the result and inspect: czoa-audio-panner.wav — PCM16; 48000 Hz; 2 channels; 72000 frames; left = 0
Frequently asked questions
How does Audio Panner & Balance Controller process the signal or file?+
Uses the Web Audio equal-power StereoPannerNode. Pan −1 moves sound left, +1 moves it right, and 0 centers it. The rendered output always contains two channels.
How can I reproduce the Audio Panner & Balance Controller example?+
Example file: /examples/audio-stereo.wav; Download the example file and select it in the file input. Set the visible controls to: Pan (-1 left, +1 right) = 1 Click “Process locally”. Download the result and inspect: czoa-audio-panner.wav — PCM16; 48000 Hz; 2 channels; 72000 frames; left = 0
What limits apply to Audio Panner & Balance Controller?+
Pan must be −1 to +1. Only mono and stereo sources are accepted. Centered mono is spread across two channels with equal-power gains. Stereo channels may sum at the extremes and PCM export clips amplitudes beyond ±1.
What does browser-isolation evidence establish?+
Network requests observed during the example contained no selected-audio payload while the fixture panned right and decoded the WAV channels. This covers the tested value path, not assets, extensions, permissions or every network configuration.