How do I check stereo balance and channel phase in an audio track?

Upload your audio file into the Audio Channel Analyzer. The tool measures Left/Right RMS balance, stereo width, phase correlation (-1 to +1), and mono compatibility.

What does phase correlation tell me about my mix?

+1 indicates perfect mono compatibility, values between +0.5 and +1 indicate healthy stereo, and negative values (below 0) indicate phase cancellation that will disappear when played on mono phone speakers.

Can I isolate or solo the Left or Right channel?

Yes. Listen to Left Only, Right Only, Mid (Center), or Side (Stereo Difference) channels in real time.

Can I convert stereo audio to pure mono?

Yes. Export a balanced summed mono audio file.

Can I view real-time stereo Lissajous vectorscopes?

Yes. The visual vectorscope displays stereo field distribution.

Is analysis performed locally?

Yes. Web Audio API processes stereo buffers client-side.

NexLove Media

Audio Channel Analyzer & Stereo Balance Meter

Inspect Left and Right channel balance, channel counts (Mono / Stereo / 5.1), and phase correlation in your browser.

TL;DR: Audio Channel Analyzer & Stereo Balance Meter is a 100% free browser-based media utility. Analyze Left/Right channel balance, mono compatibility, and stereo imaging.

Drag & drop your audio file here

or click to browse from your device

Or press Ctrl + V to paste

MP3 WAV OGG M4A FLAC Up to 100MB

100% local browser processing — this file never leaves your device

Understanding Audio Channel Analyzer & Stereo Balance Meter

Inspect Left and Right channel balance, channel counts (Mono / Stereo / 5.1), and phase correlation in your browser. Designed for creators, video editors, audio engineers, web designers, and developers who need instant, high-precision processing without software installation, watermarks, or file uploads.

Mathematical Formula & Technical Methodology

\text{Stereo Correlation} = \frac{\sum L_i R_i}{\sqrt{\sum L_i^2 \sum R_i^2}}

Formula Variables Explained:
Calculates Pearson correlation between Left and Right channels (+1.0 = Mono, 0 = Wide Stereo, -1.0 = Out of Phase).

Step-by-Step Worked Example

Correlation +0.75 indicates an immersive stereo mix with excellent mono radio compatibility.

100% Client-Side Privacy Guarantee

All media decoding, manipulation, calculations, and encoding execute locally inside your web browser using HTML5 Canvas, Web Audio API, WebCodecs, Web Crypto, and modern JavaScript engines. Zero server uploads, zero telemetry, and no registration required.

Frequently Asked Questions

: Upload your audio file into the Audio Channel Analyzer. The tool measures Left/Right RMS balance, stereo width, phase correlation (-1 to +1), and mono compatibility.
: +1 indicates perfect mono compatibility, values between +0.5 and +1 indicate healthy stereo, and negative values (below 0) indicate phase cancellation that will disappear when played on mono phone speakers.
: Yes. Listen to Left Only, Right Only, Mid (Center), or Side (Stereo Difference) channels in real time.
: Yes. Export a balanced summed mono audio file.
: Yes. The visual vectorscope displays stereo field distribution.
: Yes. Web Audio API processes stereo buffers client-side.

Embed This Tool

Add the live Audio Channel Analyzer & Stereo Balance Meter to your own website with this embed code:

<iframe src="https://nexlove.org/embed/audio-channel-analyzer.html" width="100%" height="650" style="border:1px solid #e2e8f0;border-radius:12px" title="Audio Channel Analyzer & Stereo Balance Meter — NexLove" loading="lazy"></iframe>

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