Overview
Internet music dealers currently sell "CD-Quality" tracks, or even better ("Studio-Master"), thanks to lossless audio coding formats (FLAC, ALAC). However, a lossless format does not guarantee that the audio content is what it seems to be. The audio signal may have been upscaled (increasing the resolution), upsampled (increasing the sampling rate) or even transcoded from a lossy to a lossless format. Lossless Audio Checker analyzes lossless audio tracks and detects upscaling, upsampling and transcoding.
AES paper
Lossless Audio Checker 2.0 was presented on October 30th, 2015 at the 139th Audio Engineering Society (AES) Convention in New York. More information about our paper is available here.
Detection algorithms
- Upscaling
- Upsampling
- AAC-SIN Transcoding: AAC tracks, encoded using sine windows, transcoded to a lossless format
Work in progress
- AAC-KBD Transcoding: AAC tracks, encoded using KBD windows (e.g., Nero AAC), transcoded to a lossless format
- MP3 Transcoding: MP3 tracks transcoded to a lossless format
- macOS GUI
Downloads
| Platform | GUI v2.0.6 (Regular users) | CLI v2.0.5 (Power users) | ||
|---|---|---|---|---|
| Windows | 64-bit | 32-bit | 64-bit | 32-bit |
| macOS | - | 64-bit | ||
| Linux | - | - | 64-bit | 32-bit |
| Supported formats | WAVE, FLAC | WAVE | ||
| Changelog | Changelog | Changelog | ||