Audio & media · focused workspace

Stereo Phase Correlation Analyzer

Measure left/right correlation and mono cancellation from decoded stereo audio, compare short windows and export a mono reference WAV.

Phase windowsEditable projectsLocal processing

Source → inspect → export

Open project

Preparing the worked example…

Your source & settings

Settings & options

Open your media file

Files stay in your browser. Try the built-in sample first.

Choose file

Upload a supported media file up to 20 MiB. The example is generated locally. Stereo analysis uses the first 30 seconds.

Inspect your result

PREVIEW & EXPORT

Output file

Know what changed

Analyzes the first 30 seconds of two decoded channels. Zero-lag correlation is not a delay detector. Mono reference is the simple channel average, with no normalization; codec decoding can vary by browser.

Choose another output above or open Export files.

Explore the example

Measure left/right correlation and mono cancellation from decoded stereo audio, compare short windows and export a mono reference WAV.

What you can inspect

Phase windows — Start seconds, End seconds, Correlation, Left RMS, Right RMS, Mono RMS.

Keep the result you need

Use the output selector to inspect each generated file, then download it. Save a project to keep source inputs and settings together. Result files and editable projects serve different purposes.

Processing & file support

Upload a supported media file up to 20 MiB. The example is generated locally. Stereo analysis uses the first 30 seconds.

Your working session

Processing runs locally in a worker with a 30-second cancellation limit. Undo and redo keep up to 20 edits in this tab. Project files include imported assets and are limited to 40 MiB. There is no automatic saving.

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Using Stereo Phase Correlation Analyzer

Measure left/right correlation and mono cancellation from decoded stereo audio, compare short windows and export a mono reference WAV.

Try the built-in sample, then choose your own supported files.
Adjust analysis window · milliseconds. Change one setting at a time so you can understand its effect.
Choose “Analyze stereo audio”. Inspect the phase windows before using the result.
Download the selected output, inspect other files in Export files and save a project if you want to reopen the same inputs.

Example

Try the built-in example, inspect phase windows and compare the result after changing one option.

Questions & answers

What does Stereo Phase Correlation Analyzer do?

Measure left/right correlation and mono cancellation from decoded stereo audio, compare short windows and export a mono reference WAV.

What are the important limitations?

Can I save and reopen my work?

Yes. Save a project JSON file containing your inputs, settings and any imported assets. Projects are limited to 40 MiB. Undo/redo stores up to 20 edits in this session and is not saved in the project. There is no automatic saving.

How do imports and output previews work?

Upload a supported media file up to 20 MiB. The example is generated locally. Stereo analysis uses the first 30 seconds. Text previews show up to 150,000 characters; downloads include the complete output. Tables show 50 rows per page; CSV files include all rows.