Accessible Peak Meter ~ Realtime Sonification

Accessible Peak Meter uses real-time sonification to deliver information to the user about audio levels and peaks in audio signals, and so supports core activities in audio production. Accessible Peak Meter 3 is an extended development of Accessible Peak Meter. It adds more meter modes (RMS, EBU, VU/PPM, Truepeak, Dialnorm and Dynamic Range).

Accessible Peak Meter was developed in 2014/2015 at Queen Mary University of London as part of the Design Patterns for Inclusive Collaboration research project ( ).

More information about Accessible Peak Meter can be found at

The plug-in comes with the following tweakable parameters:

  1. Sonification Type: to switch between continuous mode , clipping mode and clip tone mode. “Clip tone” sonficates as soon level is above threshold .
  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. Tone: controls height of the sonification tone in clip tone mode;
  5. Threshold: sets the threshold for the clipping mode, it has no effect on the continous mode
  6. 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.
  7. DAW sync: if set to “on”, meter reset is synced with DAW start playing. Only applicable for program loudness modes like RMS/EBU/DialNorm IL and PLR
  8. Meter Mode: sets the meter modes. Please to note that all meter modes are calibrated to 0 dBFS, 0 dBTP, 0 LUFS, 0LKFS, 0 VUFS and 0 PPMFS
    1. Peak: same as AccessiblePeakMeter, dBFS
    2. TruePeak: based on ITU BS1770.4, dBTP  
    3. VU: peak meter, 300ms integration time, VUFS
    4. PPM: peak meter, target, PPMFS
    5. RMS: 600ms integration time, AES-17, dBFS 
    6. EBU: EBU R128, target level -23 LUFS, LUFS
    7. DialNorm: gated, target level -24 LKFS, LKFS
    8. DR: PLR/PSR, dB

The AccessiblePeakMeter3 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.

dpMeter ~ Freeware Multichannel Audio Meter

dpMeter is a precise digital audio multi channel meter including RMS, EBU R 128Dialog gated and TruePeak (intersample) measurement. It is the successor of the very popular dpMeter4 and adds GUI resizing and preset management.