LoopCheck CLI

LoopCheck CLI is a command-line tool for developers and sound designers who need to quickly measure a batch of WAV files. It's built for technical workflows like game audio handoffs, where you need to verify many files at once. The tool scans a folder of WAVs and generates a single JSON report with detailed, per-channel measurements. It requires Node.js 20 or later to run.

This utility helps you spot potential issues before your audio goes into production. Instead of opening files one by one, you can run a single command to get a summary of an entire batch. The per-channel reporting is its key feature, letting you find problems like DC offset or clipping in just one channel of a stereo file.

It provides several key measurements for each file:

• Per-channel metrics: Sample peak, unweighted RMS, and mean DC offset.
• Clipping check: A count of samples that are near full-scale.
• Silence detection: Measures leading and trailing silence.
• Loop integrity: An optional check for amplitude differences between the start and end of a file.

It's important to understand what LoopCheck CLI doesn't do. It's a measurement aid with fixed thresholds, not a perceptual tool that detects audible clicks or guarantees quality. It won't play, edit, or repair your audio files. The tool also doesn't measure loudness (LUFS) or true peak, nor does it inspect embedded loop metadata from a sampler.

The tool works with standard little-endian PCM WAV files (8, 16, 24, or 32-bit). It does not support other formats like MP3, OGG, FLAC, or compressed WAV variants. A free preview is available for download, which includes a sample JSON report so you can see the exact output before purchasing.