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About Audio Peak Level Meter
The True Peak (dBTP) Audio Level Meter & Intersample Clip Detector measures sample peak and inter-sample overshoots (ITU-R BS.1770-4 4x oversampling), detecting hidden digital clipping distortion before lossy MP3/AAC encoding.
How to Use Audio Peak Level Meter
Step 1
Upload a master audio track.
Step 2
Inspect the True Peak meter and clipping indicator.
Step 3
Review timestamps of detected intersample overshoots.
Step 4
Click "Copy True Peak Report".
Practical Use Cases for Audio Peak Level Meter
Detecting Intersample Clipping on Streaming Masters
Verify if high-energy master tracks exceed +0.0 dBTP True Peak, preventing audio distortion when streaming platforms transcode to AAC/MP3.
Calibrating Headroom for Vinyl & CD Production
Ensure audio peaks stay within safe mastering ceilings (-1.0 dBTP for Spotify/YouTube, -0.1 dBTP for CD).
Input & Output Examples
Auditing Master for Streaming Transcoding
Audio: `master.wav` (Sample Peak: `-0.1 dBFS`, True Peak: `+0.7 dBTP`)
Intersample Clipping Detected ⚠️ (+0.7 dBTP overshoot) | Recommended Ceiling Adjustment: `-0.8 dB`
Key Features & Performance
- ✓ITU-R BS.1770-4 compliant 4x oversampling polyphase True Peak detection engine.
- ✓Displays: Sample Peak (dBFS), True Peak (dBTP), Total Clip Count, and First Clip Timestamp.
- ✓Real-time dual channel L/R level meter with peak hold needles.
- ✓100% Client-Side Web Audio DSP.
- ✓1-Click Copy True Peak audit report.
Key Terminology & Definitions
True Peak (dBTP)
The maximum analog voltage peak reconstructed between digital samples, measured using 4x oversampling interpolation.
Intersample Peak (ISP)
An analog peak that exceeds 0 dBFS when passing through a Digital-to-Analog Converter (DAC), even if individual digital samples do not reach 0 dBFS.