Audio Delta Lab
Align two audio files and measure where they differ. Detect timing, gain, polarity, channel mapping, drift, and residual level.
What this tool tells you
What it does
Use this when you want to understand whether two versions of audio differ and where those differences begin.
How to use it
Add the two files, then let TrueRes align them before reviewing timing offset, gain, polarity, channel mapping, drift, and the residual signal.
How to interpret it
Alignment makes comparisons more meaningful, but it cannot erase every format, edit, or decode difference. The residual is the remaining difference after the selected alignment and gain adjustments.
Frequently Asked Questions
- What can this tool compare?
- It compares two audio files after alignment and reports timing offset, gain, polarity, channel mapping, drift, and the remaining residual difference.
- Why does the tool align timing and gain first?
- Small timing or gain differences can dominate a direct comparison. Alignment and gain adjustment make the remaining residual more useful for identifying other differences.
- What is the residual signal?
- The residual is the difference left after the selected alignment and gain adjustments. It can reveal edits, processing, codec artifacts, or other differences, but it is not a complete explanation by itself.
Selected files are processed locally in the browser and are not uploaded to TrueRes for processing. Open this page in a modern browser to use the interactive tool.