Whine when playing video
#21
(12-04-2019, 10:32 AM)m42uko Wrote: Another day, another attempt. This time, I added the following circuit instead of L11:
[Image: pbp_capmult.png]
And while it does not solve the problem entirely, it significantly reduces the noise down to an acceptable level. There is enough space on the PBP to fit this circuit, but it's still three components for one. Yet, I don't really have any other idea at the moment. Well, apart from messing with the SMPS chip, but I don't feel like risking to fry the entire board when I only have one to play with.

It’s cool you have made progress.  I don’t have hardware in hand yet.  I haven’t seen any measurements of the frequency.    I think  could measure a put a high pass filter on sound output. Though your solution to try and smooth the ripple at the putative source is more elegant.
  Reply


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

Possibly Related Threads…
Thread Author Replies Views Last Post
  Replacement for video cable (EDP to LCD/camera)? pnwkayaker 2 1,053 10-13-2020, 08:42 PM
Last Post: pnwkayaker
  USB C video and hub/net/audio/whatever Corkonian 1 1,108 11-15-2019, 11:36 PM
Last Post: deviantgnome
  USB-C hub/dock/video Corkonian 2 1,749 11-02-2019, 02:29 PM
Last Post: Corkonian

Forum Jump:


Users browsing this thread: 3 Guest(s)