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Lossless Audio Checker


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This package was approved by moderator gep13 on 5/25/2019.


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.

Research papers

2015-10-30: Julien Lacroix, Yann Prime, Alexandre Remy, Olivier Derrien, Lossless Audio Checker: A Software for the Detection of Upscaling, Upsampling, and Transcoding in Lossless Musical Tracks. 139th International Audio Engineering Society Convention (AES), New York.
2019-02-27: Olivier Derrien, Detection of Genuine Lossless Audio Files: Application to the MPEG-AAC Codec. Journal of the Audio Engineering Society (JAES) Volume 67 Issue 3 pp. 116-123. See here for open access version.

Detection algorithms

  • Upscaling
  • Upsampling
  • AAC-SIN Transcoding: AAC tracks, encoded using sine windows, transcoded to a lossless format

To install Lossless Audio Checker, run the following command from the command line or from PowerShell:

C:\> choco install lossless-audio-checker

To upgrade Lossless Audio Checker, run the following command from the command line or from PowerShell:

C:\> choco upgrade lossless-audio-checker


  • tools\chocolateyinstall.ps1 Show
    $ErrorActionPreference = 'Stop';
    $toolsDir   = "$(Split-Path -parent $MyInvocation.MyCommand.Definition)"
    $packageArgs = @{
      packageName    = $env:ChocolateyPackageName
      unzipLocation  = "$toolsDir"
      url            = ''
      checksum       = '8105B6A865C38CC09F24C9852DBC19357893E3E099E86B2E2E2C9D2F3855B32A'
      checksumType   = 'sha256'
      url64          = ''
      checksum64     = 'A5370AA6D42086666081FC0626B5C7877EC8FB0BAB21017BF36F6FF1E94B63F7'
      checksumType64 = 'sha256'
    Install-ChocolateyZipPackage @packageArgs
    # Install start menu shortcut
    $programs = [environment]::GetFolderPath([environment+specialfolder]::Programs)
    $shortcutFilePath = Join-Path $programs "Lossless Audio Checker.lnk"
    $targetPath = Join-Path $toolsDir "Lossless Audio Checker.exe"
    Install-ChocolateyShortcut -shortcutFilePath $shortcutFilePath -targetPath $targetPath
  • tools\chocolateyuninstall.ps1 Show
    # Remove start menu shortcut
    $programs = [environment]::GetFolderPath([environment+specialfolder]::Programs)
    $shortcutFilePath = Join-Path $programs "Lossless Audio Checker.lnk"
    if (Test-Path $shortcutFilePath) { Remove-Item $shortcutFilePath }

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This package has no dependencies.

Package Maintainer(s)

Software Author(s)

  • Julien Lacroix and Yann Prime.


© 2012-2019 Julien Lacroix and Yann Prime


Release Notes

Version History

Version Downloads Last updated Status

Discussion for the Lossless Audio Checker Package

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