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This package skips automatic verification:

Installs drivers

This package was approved by moderator gep13 on 8/23/2016.

ViPER4Windows is an “APO”. APO stands for “Audio Processing Object”. APO is designed by Microsoft. It is an audio processing framework that can be loaded onto any sound card.
ViPER4Windows ViPER’s Audio audio driver for Windows PC OS.
It comes with many audio effects such as Gain Control, Equalizer, Convolver, Surround, Reverb, Compressor and Limiter.

To install ViPER4Windows, run the following command from the command line or from PowerShell:

C:\> choco install viper4windows

To upgrade ViPER4Windows, run the following command from the command line or from PowerShell:

C:\> choco upgrade viper4windows


  • tools\chocolateyInstall.ps1 Show
    $packageName = 'viper4windows'
    $fileType = 'exe'
    $url = ''
    $scriptPath = Split-Path -parent $MyInvocation.MyCommand.Definition
    $ahkFile = "$scriptPath\viper4windowsinstall.ahk"
    new-item "${env:temp}\viper4windows" -itemtype directory
    $unpackfile = "${env:temp}\viper4windows\"
    $unpackdir = "${env:temp}\viper4windows"
    Get-ChocolateyWebFile $packageName $unpackfile $url -Checksum 642fe0c89e25792b9551b4b8d89f4aa091b1f081be94bee66d4dbdf526d9b949 -ChecksumType 'sha256'
    Get-ChocolateyUnzip $unpackfile $unpackdir
    $file = "${env:temp}\viper4windows\V4W_Setup_x86.exe"
    $osBitness = Get-ProcessorBits
    if ($osBitness -eq 64) {
      $file = "${env:temp}\viper4windows\V4W_Setup_x64.exe"
    Start-Process 'AutoHotkey' $ahkFile	
    Install-ChocolateyInstallPackage $packageName $fileType $silentArgs $file
    Remove-Item $unpackdir -Recurse -Force
  • tools\viper4windowsinstall.ahk Show
    WinWait, ahk_class #32770, , 500
    ControlClick, Button2, ahk_class #32770
    WinWait, ahk_class #32770, , 500
    ControlClick, Button1, ahk_class #32770

Virus Scan Results

In cases where actual malware is found, the packages are subject to removal. Software sometimes has false positives. Moderators do not necessarily validate the safety of the underlying software, only that a package retrieves software from the official distribution point and/or validate embedded software against official distribution point (where distribution rights allow redistribution).

Chocolatey Pro provides runtime protection from possible malware.


Package Maintainer(s)

Software Author(s)

  • Euphy Wong
  • Jasper Loo


Version History

Version Downloads Last updated Status
ViPER4Windows 1.0.5 489 Monday, May 18, 2015 approved

Discussion for the ViPER4Windows Package

Ground rules:

  • This discussion is only about ViPER4Windows and the ViPER4Windows package. If you have feedback for Chocolatey, please contact the google group.
  • This discussion will carry over multiple versions. If you have a comment about a particular version, please note that in your comments.
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  • Tell us what you love about the package or ViPER4Windows, or tell us what needs improvement.
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