WAV Audio Analyzer & Mono Check
Read the samples. Listen in mono. Keep measurements you can explain.
Opening your interactive tool…
The interactive controls need JavaScript. You can explore the guide below while they open.
What each measurement means
| Measurement | Definition |
|---|---|
| Sample peak | Largest absolute source sample value |
| RMS | Square root of mean squared samples, including DC |
| DC mean | Arithmetic mean of signed samples |
| Crest factor | 20 × log10(peak / RMS); undefined for silence |
| Averaged mono | (Left + Right) / 2; mono source unchanged |
| Correlation | Mean-centered Pearson correlation when defined |
| Supported input | PCM16/24 WAV · mono/stereo · 44.1/48 kHz · ≤12 MiB · ≤30 s |
Inspect the samples in a supported local WAV
Open a short PCM WAV or try the original example. The tool reads its sample rate, channel count, bit depth, frame count and duration, then measures each channel without starting sound. Your selected audio stays in the browser.
Sample peak shows the largest represented sample magnitude. RMS, including any DC component, describes average squared sample level; crest factor compares peak with RMS. DC mean shows the average signed sample value. These whole-file quantities answer different questions, so they are shown separately.
Compare original stereo with averaged mono
Choose Original or Averaged mono to audition the file once. Stereo mono-summing uses (Left + Right) divided by two. Opposite-polarity content can cancel, so listening to this comparison can expose a change that a single level number does not explain.
Stereo correlation is mean-centered Pearson correlation between the two channels. It is undefined for a mono source or channels with too little variation. It describes a relationship between samples rather than grading stereo width, musical alignment or mix quality.
Keep a measurement report with honest boundaries
Download a local JSON report with source format and numeric measurements, without the filename or audio. You can also download an averaged-mono 16-bit PCM WAV at the source sample rate. The audition uses half gain for comfort; measurements and exported samples do not include that gain.
Accepted input is PCM16 or PCM24 WAV, mono or stereo, at 44.1 or 48 kHz, up to 12 MiB and 30 seconds. The analyzer reports sample measurements, not LUFS, reconstructed true peak, automatic mastering or a release certificate. Samples at their represented limits are candidates to inspect, not proof of audible clipping.
Common questions
Does this measure LUFS or true peak?
No. It measures sample peak, RMS including DC, crest factor, DC mean, represented sample-limit candidates and defined stereo statistics. LUFS and reconstructed true peak require different measurement methods.
Why can stereo correlation be undefined?
A mono source has no left/right pair. A silent or nearly constant channel can also leave too little mean-centered variation for correlation. Undefined is reported instead of inventing a score.
What can I download from the analyzer?
A JSON measurement report with no filename or audio, and an averaged-mono PCM16 WAV at the source sample rate. A 24-bit source becomes 16-bit in that WAV; extra metadata is not copied.