True Peak Checker (dBTP)
Measure inter-sample true peaks (4× oversampled, BS.1770 Annex 2) and check against the −1 dBTP broadcast/streaming ceiling.
True peak is measured on a 4× oversampled signal per BS.1770 Annex 2, catching inter-sample overs that sample-peak meters miss. Broadcast specs cap at −1 to −2 dBTP; for low-bitrate lossy encodes, −2 dBTP gives the codec extra headroom.
🔒 Everything runs in your browser via the Web Audio API — your audio is never uploaded.
Measure inter-sample true peaks (4× oversampled, BS.1770 Annex 2) and check against the −1 dBTP broadcast/streaming ceiling.
About True Peak Checker (dBTP)
Measure inter-sample true peaks (4× oversampled, BS.1770 Annex 2) and check against the −1 dBTP broadcast/streaming ceiling. True peak is measured on a 4× oversampled signal per BS.1770 Annex 2, catching inter-sample overs that sample-peak meters miss. Broadcast specs cap at −1 to −2 dBTP; for low-bitrate lossy encodes, −2 dBTP gives the codec extra headroom.
How to use True Peak Checker (dBTP)
- 1Drag a file onto True Peak Checker (dBTP), or click to choose one — it is analysed locally and never uploaded.
- 2Wait a moment while the tool processes the file entirely in your browser.
- 3Read the result, metrics and pass/fail verdict.
- 4Copy or export the report for your delivery, QC log or records.
Why use True Peak Checker (dBTP)?
- ✓Analyses your file entirely in your browser — it is never uploaded, so even confidential masters stay private.
- ✓Built on a published reference: ITU-R BS.1770-4, Annex 2 (true-peak meter).
- ✓100% free with no sign-up, no watermark and no usage limits.
- ✓Works on any device — desktop, tablet or phone — and keeps working offline once loaded.
Frequently asked questions
What does True Peak Checker (dBTP) do?+
Measure inter-sample true peaks (4× oversampled, BS.1770 Annex 2) and check against the −1 dBTP broadcast/streaming ceiling. True peak is measured on a 4× oversampled signal per BS.1770 Annex 2, catching inter-sample overs that sample-peak meters miss.
Is my file uploaded to a server?+
No. True Peak Checker (dBTP) processes your file entirely in your browser using local JavaScript and the Web platform — your media never leaves your device, so it is safe for unreleased or confidential content.
What standard or source is True Peak Checker (dBTP) based on?+
It follows ITU-R BS.1770-4, Annex 2 (true-peak meter); EBU R 128 (−1 dBTP maximum). Always confirm against the current official document, as specifications and rates can change.
Is True Peak Checker (dBTP) free to use?+
Yes — it is completely free with no account, no sign-up and no usage limits. There is no watermark and no paywall.
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