Whine when playing video
#18
(11-29-2019, 08:47 AM)Samarium151 Wrote: There are rc filters on input output lines to speakers. (P14 of Pinebook pro schematic).  I’m not as sure about headphone jack but if I’m reading it right filter components have different values for head phone .  Given this you might not have a whine via headphone.   A change to the filter compost values might be a fix at the cost of a narrower frequency range.  The cheap home brew solution might be to wrap the speaker leads around a ferrite donut to act as inductor and perhaps more of a low pass filter.  This will probably not work for a very high pitched noise but if it is the pulse width modulator for brightness is should be low enough to work.  Waiting on my pbp so I can’t try unfortunately.


After reading your analysis of the audio circuit, found that disabling the sound card in sound preferences seems to eliminate the noise. If you are using the stock distro, you can right click on the speaker icon in the menu bar, select sound preferences. Then click on the hardware tab, select es8316-spk-sound. Finally change the profile in the drop down menu to off.


Messages In This Thread
Whine when playing video - by phuzy - 11-07-2019, 06:54 PM
RE: Whine when playing video - by diodelass - 11-07-2019, 07:14 PM
RE: Whine when playing video - by phuzy - 11-08-2019, 05:54 AM
RE: Whine when playing video - by VoxUnius - 11-07-2019, 08:33 PM
RE: Whine when playing video - by diodelass - 11-08-2019, 08:57 AM
RE: Whine when playing video - by linusfargo - 11-08-2019, 07:39 PM
RE: Whine when playing video - by tgrauss - 11-09-2019, 02:57 AM
RE: Whine when playing video - by Firestorm - 11-09-2019, 06:35 AM
RE: Whine when playing video - by linusfargo - 11-09-2019, 11:46 AM
RE: Whine when playing video - by LinuxIsNewToMe - 03-20-2020, 01:36 PM
RE: Whine when playing video - by Firestorm - 04-21-2020, 02:43 AM
RE: Whine when playing video - by tgrauss - 11-14-2019, 04:07 PM
RE: Whine when playing video - by linusfargo - 11-15-2019, 12:19 AM
RE: Whine when playing video - by Firestorm - 11-15-2019, 03:21 PM
RE: Whine when playing video - by phuzy - 11-17-2019, 08:45 PM
RE: Whine when playing video - by pfeerick - 11-28-2019, 03:00 AM
RE: Whine when playing video - by Samarium151 - 11-29-2019, 08:47 AM
RE: Whine when playing video - by linusfargo - 12-01-2019, 11:46 AM
RE: Whine when playing video - by m42uko - 12-01-2019, 04:57 AM
RE: Whine when playing video - by zaius - 12-01-2019, 11:37 AM
RE: Whine when playing video - by m42uko - 12-02-2019, 08:52 AM
RE: Whine when playing video - by m42uko - 12-04-2019, 10:32 AM
RE: Whine when playing video - by Samarium151 - 12-04-2019, 10:01 PM
RE: Whine when playing video - by m42uko - 12-05-2019, 02:04 PM
RE: Whine when playing video - by m42uko - 12-06-2019, 01:25 AM
RE: Whine when playing video - by zaius - 12-06-2019, 02:05 PM
RE: Whine when playing video - by m42uko - 12-15-2019, 08:03 AM
RE: Whine when playing video - by Samarium151 - 12-31-2019, 08:41 PM
RE: Whine when playing video - by phuzy - 07-09-2020, 02:33 PM

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