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Thread: processor usage

  1. #1
    Junior Member
    Join Date
    Jun 2018

    processor usage

    Hi Forum,

    I have a question regarding the AudioProcessorUsage() function. Is this measuring the cpu usage of the Teensy or the cpu usage (if applicable) of the audioshield?

    Greetz, Koen

  2. #2
    Senior Member oddson's Avatar
    Join Date
    Feb 2013
    Isle in the Salish Sea
    Teensy... the audio shield is just doing the conversion and analog duties.

  3. #3
    Senior Member PaulStoffregen's Avatar
    Join Date
    Nov 2012
    It's the CPU usage on Teensy.

    Graphically speaking, AudioProcessorUsage() measures this:

    Click image for larger version. 

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    It captures all the CPU time spend doing non-I/O work like reverb, waveform synth, and effects processing. It also captures part of the work involved for receiving and sending digital audio data to/from the audio shield, but measuring the portion done in the higher priority interrupts is imperfect.

  4. #4
    Junior Member
    Join Date
    Jun 2018
    Thanks, that is clear. Anything on the Teensy between input and output in the audio library objects.

    Thank you

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