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Accessible Peak Meter


To download the AccessiblePeakMeter plug-in just pick the right zip archive for your platform from the following list:

If you want to try the two-sound cards version of the VST plug-in for Windows, pick one of the following:


Windows 32-bit and 64-bit

For both Windows 32-bit and Windows 64-bit the plug-in is the file called AccessiblePeakMeter.dll. You need to copy it in the directory where your DAW will look for plug-ins. Please refer to the manual of your DAW for the exact location of your plug-ins folder on your machine. After rebooting your DAW or rescanning the plug-ins folder AccessiblePeakMeter should appear in the list of plug-ins of your DAW. Please make sure you download the right plug-in version for your DAW: the parameters might not be displayed correctly to automation inspectors when the 32-bit plug-in is used in a 64-bit DAW.


The directory for audio plug-ins in Mac OS is /Macintosh HD/Library/Audio/Plug-ins/. Alternatively if you don't have permissions to access this directory, you can use the user's local plug-in directory which is <your home directory>/Library/Audio/Plug-ins.


The plug-in is the file called AccessiblePeakMeter.aaxplugin. Copy it in /Library/Application Support/Avid/Audio/Plugins. After rebooting your DAW, AccessiblePeakMeter should appear in the list of plug-ins available.


The plug-in comes with five tweakable parameters:

  1. Sonification Type: to switch between continuous mode mode and clipping mode mode;
  2. Dry: controls the level of the input audio, namely the audio content you want to analyze;
  3. Wet: controls the level of the sonification;
  4. Threshold: sets the threshold for the clipping mode, it has no effect on the continous mode
  5. Decay: this only affects the continuous mode sonification. The value ranges from 1 second down to 0.05 seconds. This is the time the meter would take to decay from 0 db to -inf after an impulse. These numbers don't give a real feeling of how the sonification will sound - it is easier to think that when set to 0.05 the sonification will stop pretty immediately when you stop the audio; whereas if the value is set to 1, it will take longer to decay. In general, though, the latter sounds cleaner and normally the audio level doesn't go all the way down to silence, as during the decay it encounters other peaks that bring it back up. So it's up to you to find the right trade off.

The AccessiblePeakmeter provides access to the parameters by exposing them to inspectors - such as ReaAccess plug-in or the Cakewalk Sonar inspector - in a clear and well formatted way.


An excellent tutorial by Gary Readfern-Gray on how to install and use AccessiblePeakMeter in Logic can be found on the Blind Logic website


AccessiblePeakMeter is a completely open source project! The source code is available in the SoundSoftware repository. It is released under the Cokos WDL license, which in short means you can alter it and redistribute it freely, even without providing the source code of your derivative work.

To build AccessiblePeakMeter you will need to set up the WDL-OL framework. More info on this can be found in the README file of the source code.