noise

Noise is unwanted sound considered unpleasant, loud or disruptive to hearing. From a physics standpoint, there is no distinction between noise and desired sound, as both are vibrations through a medium, such as air or water. The difference arises when the brain receives and perceives a sound.Acoustic noise is any sound in the acoustic domain, either deliberate (e.g., music or speech) or unintended. In contrast, noise in electronics may not be audible to the human ear and may require instruments for detection.In audio engineering, noise can refer to the unwanted residual electronic noise signal that gives rise to acoustic noise heard as a hiss. This signal noise is commonly measured using A-weighting or ITU-R 468 weighting.In experimental sciences, noise can refer to any random fluctuations of data that hinders perception of a signal.

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  1. djngolf

    Knocking noise coming from the front sorted.

    I've noticed a knocking noise coming from the front of my MG4 It is more obvious on bumpier roads. Today I decided to investigate having removed everything from the cabin to eliminate stuff. On opening the bonnet I happened to touch things that may be causing said knock and found that the...
  2. N

    SE SR Under Bonnet Noise suppression

    I saw this mentioned in another thread but can't find it now. I have an early SE SR . There is no suppression material under the bonnet . I'm sure I saw a pic of another MG4 with this material in place . I'm not that bothered because the car is so quiet anyway. But I would like it fitted if it...
  3. F

    MG HS PHEV - Loud clicking car noise coming from motor - Battery dead

    My brand new 3 month old MG HS PHEV makes a loud clicking noise and then loses all its charge in its 12v battery. Then it won't start again unless jump started. I spoke to a fellow MG owner and he seemed to think that the clicking noise sounds like a starter motor and questioned if the cars'...
  4. A

    Wind noise over approx 55mph

    As per the title, my MG5 seems to suffer from wind noise - either from the pillar or maybe even from the roof bars. The noise increases on higher speeds, and is silent under 50mph ish. I don't think that it's a problem with the seals, as I can't feel any draught at all. Does anyone else have...
  5. E

    MG4 EV (air con / fan problem) noise

    My wife and I remain very pleased with our MG4 EV. However, we do have a noise problem when the air conditioning unit is switched on. We reported the problem less than four hours after driving away from the MG dealer and they were as helpful as they could be and replaced the air conditioning...
  6. J

    Wind noise Drivers/RHS

    Hi, One of the complaints i have in my snagging list is that the car has an anoying wind noise over 40mph. Its only heard from the drivers side and others have had this on here too. I shown my dealer a video where i taped up the front quarter glass and the problem went away but they are asking...
  7. F

    MG4 SR rear axle noise

    Hello I'm a french recent owner of a MG4 SR phase 2. I've got a problem. Immediately after leaving the concession, I noticed a muffled noise coming from the rear axle. Initially I thought it was coming from the tyres, but the noise is not permanent, occurring at idle up to 70km/h. This hum-like...
  8. Ardez

    MG4 SE rattling noise over 100 kmh

    [ Moderator: solution here, zoomed out photo here.] Hello everybody, I'm writing from Italy. I own a red MG4 SE since last dec 2022 and I'm loving it. I had the oil leak issue, resolved after ONLY 5 months...Everything else was flawless...until this last weekend. We went for a ride to Tuscany...
    • Ardez
    • Thread
    • mg4 noise rattle rattling noise
    • Replies: 37
    • Forum: MG4 EV Forum
  9. 498jim

    Rattle under car heard when windows down

    I believe the rattle is from the heat shield but not confirmed. will this settle in time? Anyone else have rattles outside vehicle?
  10. I

    Scraping Noise When Using ACC/Traffic Jam Assist

    Have had my SE LR just over 6 months and been using ACC/traffic jam assist throughout that time with no issues. Over the last few weeks it has developed a scraping noise when the car is braking with either activated. Only seems to happen the first or second time the car brakes and then is fine...
  11. F

    Dashboard noise

    Hello, I realized that behind the foam of the dashboard in the upper part when it is cold there is a slight crackling / noise of plastic, have you ever noticed that? and how did you solve this problem?
  12. F

    Steering column clicking sound

    Hi when I turn the steering wheel I occasionally get a click. Also if I put oressure on oneside or other of the steering wheel. Seems to come from the column near the steering wheel height adjustment. Is this normal ?
  13. N

    parking brake

    Has anyone noticed any strange noise from the parkbrake? it happen when you park in q bit of an incline and the car move slightly back when brake is engaging , then when removing parkbrake it does a strange metallic noise .
    • nexia201
    • Thread
    • metallic mg4 mg4 ev noise parking brake
    • Replies: 2
    • Forum: MG4 EV Forum
  14. P

    AC (Air conditioning) pump noise

    I have had my MG4 just over a week now and I have just complained to my dealer about the AC pump noise, it sounds just like the youtube video as in the MG5 forum post here: https://www.mgevs.com/threads/heating-ventilation-noise.1471/#post-16712 The response from the dealer is that 'they all...
    • paulm
    • Thread
    • air conditioning mg4 noise
    • Replies: 5
    • Forum: MG4 EV Forum
  15. M

    Wind noise coming from drivers door top corner

    I’ve had my MGZS for three months and at 60 mph you get wind noise from the top seatbelt side of the drivers door window door closes fine push in rubber seal hasn’t made much difference very irritating at motorway speeds
  16. Dave S

    A "metal-to-metal" type noise whilst cornering??

    Hello, all, And apologies if this has been covered and I haven't seen it, but I seem, on occasions, to be getting a coming from my rear end of the car (MG ZS EV LR 2023) whilst cornering. At first I thought it might just be a bit of tyre squeal due to road conditions but today we heard it...
  17. Muffin

    Steering knocking noise when turning my dealers theory is wheel trim

    Asked dealer why the steering makes a knocking noise when turning he said it to with the wheel trim On the forum I see it a steering column problem Who is correct
  18. J

    MG4 drivers (right) side wind noise

    Wind noise drivers side over 40mph. Mines going back but I have a bit more proof from an experiment I did today that it is indeed the quarter glass
  19. C

    What is this sound / noise i get inside

    I get this strange noise ( faint noise) in car , it definitely come when I switch on AC and goes away when it stopped. However today I m getting it even when AC is off , very strange it make the noise when car was switched off. It's coming from Dashboard , ac vent area.
  20. B

    Scraping noise from front tyres

    Got a loan 5 while my 4 is in the dealer (again). It’s new, but the old model. Noticed a scraping noise from the front tyres/wheels when halfway between straight and full lock. Forward or reverse. I’m not reporting it, not my car and not my problem, just curious as to what it would be. It’s got...
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