[Bug 269112] click noises on uaudio from iFi Uno

From: <bugzilla-noreply_at_freebsd.org>
Date: Mon, 23 Jan 2023 09:38:20 UTC

            Bug ID: 269112
           Summary: click noises on uaudio from iFi Uno
           Product: Base System
           Version: 13.1-RELEASE
          Hardware: amd64
                OS: Any
            Status: New
          Severity: Affects Some People
          Priority: ---
         Component: kern
          Assignee: bugs@FreeBSD.org
          Reporter: alumina@ceramix.compress.to

Created attachment 239652
  --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=239652&action=edit
DSD-native support patches for FreeBSD-13.1

I creating DSD-native playback patches for FreeBSD and ports/audio/musicpd.
Testing playback on flac123, mpg321 and DSD-native supported musicpd.

Click noise detect in silence interval of music on high-resolution headphones.
It's little noise, I can't detect noise on my speaker.
If Windows7, noise is not detected.

High-sample-rate is more noise cycles.


some info:(dmesg)
uaudio_chan_play_sync_callback: Value = 0x00160bf8
uaudio_chan_play_sync_callback: Comparing 176374 Hz :: 176400 Hz


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