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testing/signal-estimator: new aport

Carl Chave requested to merge sodface/aports:testing/signal-estimator into master

signal-estimator is a small command-line and GUI tool allowing to measure different characteristics of the signal looped back from audio output to audio input.

Features:

  • send test signal to output device and receive looped back signal from input device
  • measure signal latency (the shift between output and input signal)
  • measure signal loss ratio (number of glitches per second in the input signal)
  • measurements output in JSON format for easy parsing
  • dump output and input streams to text files and plot them using matplotlib
Edited by Carl Chave

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