Audio issues - strange background noise

Discussion in 'Desktop & Laptop Computers Forum' started by frogbrains, Dec 23, 2011.

  1. frogbrains

    frogbrains
    Standard Member

    Joined:
    Feb 23, 2010
    Messages:
    16
    Products Owned:
    0
    Products Wanted:
    0
    Trophy Points:
    1
    Ratings:
    +0
    Hello!

    I am having a slight (bit very irritating) problem with my onboard audio hardware (Realtek ALC833). The 3.5mm microphone in jack causes some very strange sounding background noise. A 10 second recording of said noise can be heard here.

    I know some of the noise is picked up from my computer's rather loud fans and such, but the noise I am referring to is the odd screeching and and regular beeps. It is not caused by the microphone itself, as I have tried it with a USB audio device.

    Any explanations and/or solutions?

    By the way, I apologise if this is in the wrong forum. I was not sure whether I should post in the audio forum or computers.
     
  2. Sinbadio

    Sinbadio
    Active Member

    Joined:
    Mar 21, 2011
    Messages:
    339
    Products Owned:
    0
    Products Wanted:
    0
    Trophy Points:
    18
    Location:
    Bedford
    Ratings:
    +19
    I realise how simply this is but have you tried updating the drivers and checking to see if they are installed properly? In the case that you have done this and all is well with the driver this could just be the fact that the onboard sound device is just getting old, capacitors don't last forever. Might just need a new solution, there not expensive nowadays only around 10-15 bucks.
     
  3. noiseboy72

    noiseboy72
    Well-known Member

    Joined:
    Apr 24, 2011
    Messages:
    5,412
    Products Owned:
    0
    Products Wanted:
    0
    Trophy Points:
    136
    Ratings:
    +1,455
    That is functional earth noise - interference from the power supply coming down the earthing cable.

    Try a USB audio output, or if a laptop, disconnect the PSU.

    You can also use Hum blockers. Maplin sell these for less than £10. Called earth lifters or hum buckers, they use a transformer to de-couple the earth signal. Halfords used to sell them for in car audio as well. Not sure if they still do.
     
  4. Sinbadio

    Sinbadio
    Active Member

    Joined:
    Mar 21, 2011
    Messages:
    339
    Products Owned:
    0
    Products Wanted:
    0
    Trophy Points:
    18
    Location:
    Bedford
    Ratings:
    +19
    Oh right, at least I know the real reason! Nit much of a audio person more IT.
     
  5. teljess

    teljess
    Well-known Member

    Joined:
    Jan 29, 2004
    Messages:
    3,276
    Products Owned:
    1
    Products Wanted:
    0
    Trophy Points:
    136
    Location:
    lowestoft
    Ratings:
    +687
    i had a simalar prob then i updated the drivers and all is good now
     
  6. TerryUK

    TerryUK
    Active Member

    Joined:
    Jan 12, 2008
    Messages:
    927
    Products Owned:
    0
    Products Wanted:
    0
    Trophy Points:
    28
    Location:
    Essex, UK
    Ratings:
    +63
    Is this from the front jack? If it is i had a similar problem, its interference, to fix it all I done was moved the wire connecting the jack to the MB away from the electronics and the nose went :)
     
  7. MikeTV

    MikeTV
    Well-known Member

    Joined:
    Feb 1, 2003
    Messages:
    7,782
    Products Owned:
    0
    Products Wanted:
    0
    Trophy Points:
    136
    Location:
    Ealing, London
    Ratings:
    +842
    If the problem is a grounding hum, try connecting all devices (eg. PC and receiver) to the same mains outlet. You can also try running a temporary earth cable to a radiator pipe as a test. If everything is well grounded, the hum disappears. If it makes no difference, then it's some other interference, and not ground hum.
     

Share This Page

Loading...
  1. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
    By continuing to use this site, you are consenting to our use of cookies.
    Dismiss Notice