Equalizer APO is a parametric / graphic equalizer for Windows. It is implemented
as an Audio Processing Object (APO) for the system effect infrastructure
introduced with Windows Vista.

Features:
- virtually unlimited number of filters
- works on any number of channels
- very low latency, which makes it suited for interactive applications
- low CPU usage
- modular graphical user interface
- VST plugin support
- integrates into Voicemeeter (http://www.voicemeeter.com/)

Requirements:
- Windows Vista or later (currently only Windows 7, 8, 8.1, 10 and 11 have been tested)
- the application must not bypass the system effect infrastructure
(APIs like ASIO or WASAPI exclusive mode can not be used)

Equalizer APO is best used in conjunction with Room EQ Wizard (http://www.roomeqwizard.com/), because it can read its filter text file format.

Please have a look at the Wiki (http://sourceforge.net/p/equalizerapo/wiki/) for instructions on installation and configuration.

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License

GNU General Public License version 2.0 (GPLv2)

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User Ratings

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User Reviews

  • Wow gasp! It's been years and years since I've ran in to anything free for Windows and which does not seem to contain this and that s**tware. And this is really great, got almost decent sound from my 10eur cat ears headphones with this. And with total ease, no headache and blood pressure problems at all! Now plz, make a version for Android <3 <3 <3 <3 <3
  • When it worked it was simple and effective. Perfect, until... ...the Eq failed. First on my former laptop (Dell XPS/W11) and then again on its replacement. Every time I made any adjustment to the Eq levels on a capture stream there was a buzzing noise. It got worse as more adjustments are made and went away when reset to flat. Also, the Troubleshooting functionality in the Configurator does not reveal the options it is supposed to. Several others have experienced this, but no resolutions apparent. I suspect that EqAPO is now defunct. R.I.P.
  • Just awesome!
  • Perfectly set up my wireless headphones
  • works perfectly switching between multiple output devices and always useful.
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Additional Project Details

Operating Systems

Windows

Languages

English, German

Intended Audience

Advanced End Users, End Users/Desktop

User Interface

Non-interactive (Daemon), Qt

Programming Language

C++

Related Categories

C++ Sound Audio, C++ Home Theater PC Software

Registered

2012-09-13