06-03-2017 04:39 PM
26 12
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  1. Diamond67's Avatar
    I have noticed a few times that the sound coming from the speaker is suddenly very distorted. Like going through a guitar distortion fx box.

    This has happened with normal default alarm sound when alarm goes off (Lumia bell or something) and with my custom .mp3 ringtone when somebody calls. Speaker volume was something around 2 or 3/10, so the distortion was not caused by excessive volume. And after that, I manually played back those sounds again and there were no distortion at all. The sound was clear. Seems that the sound is distorted only when the alarm or phone call awakens the phone.

    The phone speaker was not facing a flat table surface or something which could have muffled the sound.
    01-05-2016 03:01 AM
  2. k72's Avatar
    I'm not any help, but I've had that happen a few times. I figure it's just overall quality, since I've also had the screen show weird colors occasionally when I turn on the screen. Everything returns to normal.
    libra89 and Diamond67 like this.
    01-05-2016 10:25 PM
  3. aybarrap1's Avatar
    It had happened a couple of times for me as well. But it is rare so I don't worry about it.
    Diamond67 and libra89 like this.
    01-09-2016 12:28 AM
  4. LumiaGuy's Avatar
    Has happened twice to my 640 as well
    Diamond67 likes this.
    01-09-2016 10:16 AM
  5. Eurx's Avatar
    İt had happened when first time I use alarm with a song in my phone on wm10 but now fixed after 1 build. Just write it to windows feedback.
    01-09-2016 10:46 AM
  6. Lee Power's Avatar
    My Lumia 930 running Windows 10 has a couple of times also suffered this, Alert 7 was the sound being used for the alarm.
    01-09-2016 10:57 AM
  7. Diamond67's Avatar
    I haven't tried Windows 10 yet. So, this is a hardware problem?

    Anyway, thanks for your comments!
    01-09-2016 01:44 PM
  8. Adam McVeigh's Avatar
    Been happening on my 735. Thankfully only occasionally. I thought I must have damaged the phone somehow, but obviously not then if other people are experiencing this. I wonder what is causing it
    libra89 likes this.
    01-09-2016 02:01 PM
  9. Diamond67's Avatar
    Seems like a common Windows Phone feature?
    01-09-2016 02:02 PM
  10. Eustis99's Avatar
    Happened to my 735 and 640 as well. I just picked up a 550 and haven't had the issue. Hopefully it was just the o.s build.
    01-09-2016 02:08 PM
  11. Paisley Pirate's Avatar
    Mine did it once with having the phone flipped up or down on the desk. I think it was a feedback/noise cancelling issue... I couldn't get it to replicate past that one time.
    01-10-2016 01:33 PM
  12. Diamond67's Avatar
    Happened to me once again today. This time the phone was connected to the charger. The alarm sound suffered from huge amount of distortion. Has happened to me at least twice while charging the battery. But also while not charging.

    I use TPU back cover, but the speaker hole is very exactly positioned. So, I don't think this causes the distortion?
    01-11-2016 08:11 AM
  13. libra89's Avatar
    Happened to me once again today. This time the phone was connected to the charger. The alarm sound suffered from huge amount of distortion. Has happened to me at least twice while charging the battery. But also while not charging.

    I use TPU back cover, but the speaker hole is very exactly positioned. So, I don't think this causes the distortion?
    Interesting. That also happened to me with the alarm as well.
    01-11-2016 09:12 AM
  14. Electroholisticallyactive's Avatar
    My wife's Windows 10 Mobile Lumia 640 has occasionally distorted sound on the alarm sound and ringtone. It is Version 1511, Operating System build 10.0.10586.71, Firmware 02177.00000.15184.36003, Hardware 2.1.0.2. It had the same symptoms on the earlier OS build 10586.63. Anyone know how to report the problem to Microsoft?
    02-05-2016 12:40 PM
  15. aybarrap1's Avatar
    The distortion has occurred even on 8.1. It is not just the preview builds.
    02-06-2016 08:17 AM
  16. LumiaGuy's Avatar
    Since buying my 640 from BB on Black Friday, it has exhibited distorted sounds on both Alarms and Ringtones on an intermittent basis. Running 8.1.
    02-12-2016 04:07 PM
  17. claudiubt's Avatar
    Same behavior on my Lumia 730 with the latest iteration of Win10 mobile (sometimes the alarm sound is very distorted starting from low volume up). Never had this problem on Win8.1 GDR1 and GDR2. I think it's software related, but it's annoying enough. Please someone report this problem to Windows 10 buglist.
    11-08-2016 04:52 AM
  18. LumiaGuy's Avatar
    Since updating to W10, my 640 continues to intermittingly exhibit distorted sound just as I previously posted it did on 8.1 so the problem is not confined to W10.

    Sent via my Lumia 640 & mTalk
    11-08-2016 09:09 AM
  19. Diamond67's Avatar
    Since updating to W10, my 640 continues to intermittingly exhibit distorted sound just as I previously posted it did on 8.1 so the problem is not confined to W10.
    I can confirm that.
    11-09-2016 01:12 AM
  20. aybarrap1's Avatar
    I have has the occasional distortion as well on both 8.1 and 10. Annoying but since it is only every now and then it is acceptable.

    Sent from mTalk
    11-13-2016 08:17 PM
  21. Ntei's Avatar
    I am so happy it's not my phone but as it seems it is a software? problem judging by number of people and devices having this.
    11-14-2016 07:46 AM
  22. Jonathanmr7's Avatar
    Same here with mom 640 and a friend :B
    11-27-2016 10:03 AM
  23. GhostEchelon's Avatar
    It's a common problem with both issues my insider program Lumia 640 does it to. Even on the fast ring.
    11-27-2016 11:56 PM
  24. IamWinFan2's Avatar
    Closing the app and restarting it seems to fix the issue. My guess is that its driver loading issue. I had similar problems with Windows 95 for a loooonnngggg time and upgrading the driver fixed it. Sorry about going so back in time.
    11-28-2016 03:56 PM
  25. Diamond67's Avatar
    Distortion fx lives strong even with Creators Update. Strange feature.
    05-05-2017 03:50 PM
26 12

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