Can you file a problem report with logs of the problem in action? You can start
the logging whenever you like, but try to stop it as soon as possible after the
glitch has happened.
Once filed, grab a direct link from Feedback Hub > Feedback > My feedback >
(problem report) > Share and send it to me.
From: wdmaudiodev-bounce@xxxxxxxxxxxxx <wdmaudiodev-bounce@xxxxxxxxxxxxx> on
behalf of Cloud Lou <cloudex.lou@xxxxxxxxx>
Sent: Thursday, July 26, 2018 12:16:13 AM
Subject: [wdmaudiodev] Windows 10 Audio Glitch After Resume From S3 or S4 in
USB 2.0 Audio Device
I'm doing a loopback test application: play/record a stream with WASAPI
exclusive mode, and connect playback and recoring by I2S on a USB 2.0 audio
device, set both the same sampling rate, bit depth, channel number and volume
to 0dB in order to get a BitPerfect loopback test.
This works fine in normal situation--run loopback test for 5 minutes, stop,
then run it again, over 50 times there had no glitch occurred.
But when the system resume from S3 or S4, the audio glitch sometimes occurred.
I checked my application's log, it seems the audio glitch always occured at
about 1 minute after system resumed (if didn't occur at 1 minute, the next 4
minutes will nerver have any audio glitch for a 5 minutes test). Attachment is
screenshot of recorded wave.
Does anyone have any idea about this?
My testing platform information:
OS: Windows 10 Pro, build 17134.191.
USB 2.0 audio device at USB 3.0 port, using Microsoft UAC 2.0 driver.
Playback/recording format: 192KHz, 24bit