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  1. #1
    Member Linvincible's Avatar
    Join Date
    Aug 2014
    Location
    Switzerland
    Posts
    98

    underclocking RPi to reduce jitter by matching clock with standard sample rates

    Hello all, has anyone experienced underclocking of their Pi so that the clock matches an easily dividable rate for the known frequencies of 44.1 and 48 KHz?
    What happens if we run the Pi at *1, 083 801 6‬ GHz? (that's 44.1*48*2^9 Khz)
    Is that achievable?
    Would it solve the jitter issue of the Pi or am I dreaming and missing completely the point?
    (jitter issue explained here and here )
    Syno 415+ with LMS 7.9 -> Picoreplayer 5.0 with Audio-GD I2S hdmi output -> PS Audio DirectStream -> Karan KAL reference mkIII-> 2x Karan KAM 900 -> Usher BE20 DMD. All powered from PS Audio P10.

  2. #2
    Senior Member
    Join Date
    Apr 2013
    Location
    UK
    Posts
    1,314
    Don't believe it will impact the i2s clock either way. Just use an asynchronous usb DAC and you can ignore the performance of the source completely.


    Transcoded from Matt's brain by Tapatalk
    --
    Hardware: 3x Touch, 1x Radio, 2x Receivers, 1 HP Microserver NAS with Debian+LMS 7.9.0
    Music: ~1300 CDs, as 450 GB of 16/44k FLACs. No less than 3x 24/44k albums..

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