Comments on Profile Post by MLegend

  1. famish99
    famish99
    Just like anything else, lower is good, but gotta let your ears tell you what to think.
    Sep 7, 2021
  2. Woland
    Woland
    Archimago's blog has jitter files you can download and try, as well as his own conclusions from experimentation.
    Sep 7, 2021
    Cryptowolf likes this.
  3. ergopower
    ergopower
    Jitter doesn't directly affect the analog signal to a transducer where harmonic distortion and noise do. Jitter affects the fidelity of the digital data stream, common measure is bit error rate (BER)
    This you can measure directly.
    Sep 7, 2021
  4. ergopower
    ergopower
    Somewhere on the Boston Audio Society website there is a procedure for doing this. If you do discover data errors, then there is another whole discussion on how often these need to occur to be audible.
    Boston Audio Society is viewed by some as similar to ASR
    Sep 7, 2021
  5. ergopower
    ergopower
    For clarity, you can't measure jitter numerically - you can look at eye patterns of digital data streams; but what you're measuring is bit error rate.
    Sep 7, 2021
  6. atomicbob
    atomicbob
    Sep 7, 2021
    MLegend likes this.
  7. atomicbob
    atomicbob
    AES 1992 paper 3361 - Julian Dunn - Prism Sound
    Jitter: Specification and Assessment in Digital Audio Equipment

    AES 1991 paper 10-017 - Julian Dunn - Prism Sound
    Considerations for Interfaceing Digital Audio Equipment to the Standards AES-3, AES-5, AES-11
    Sep 7, 2021
    MLegend likes this.
  8. MLegend
    MLegend
    Thank you all for your input. I ask because the datasheet for the chipset my soundcard uses states the clock's maximum jitter is 2ns and I was curious to know if it's good, bad, or meaningless.

    I thought it seemed low, but since I'm ignorant on the topic, I wanted to ask and get your thoughts on the matter.

    Thank you @atomicbob, I'm definitely checking those papers out.
    Sep 7, 2021
  9. Tachikoma
    Tachikoma
    2 ns is pretty bad. I think my DAC had trouble locking to a source with 1 ns jitter.
    Sep 8, 2021
    MLegend likes this.