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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. C

    Noise coming from sprinkler valve

    9-21-22 Hi All: I have always appreciated your comments and troubleshooting recommendations. If I may ask for your thoughts on the following: I have and older Orbit WaterMaster valve. Please see attached photo. I have 4 of these valves in the manifold. I have replaced the diaphragm on all 4...
  2. M

    Please help - thundering noise when I open the hot water tap

    Hello I have no experience in this industry. A few years ago our home was completely stripped apart, remodelled and extended. This required new hot and cold water pipes all over the house, a larger boiler, larger tank and so on - see attached. We wanted the water tank to go into the loft but...
  3. A

    Constant hiss type sound coming from beneath toilet

    Hi, we're having an issue with our toilet in which only for the past few weeks a slight hissing sound happens 24/7. It sounds something is running through the pipes although there's no clear signs in the cistern or with the water meter etc. It isn't that loud, but certainly noticeable with no...
  4. M

    Humming noise when hot water tap is on.

    When I turn on my hot water taps anywhere in the house, after about half a minute there is a humming noise all around the house. When I turn on the cold tap, the noise stops. Any ideas what is causing this humming noise?? Thanks Michael.
  5. T

    Humming noise constantly

    A constant ‘hum’ noise has started and I’ve traced it back to the water meter in the street in front of the house. The noise internally can be heard from the stopcock and you can feel a bit of vibration in the pipe work around the stopcock. The dials on the water meter are dead still when there...
  6. brazilianx

    Flow Noise > Can't believe taps should be this noisy!

    Hi. First time poster. I've just had a new bathroom fitted in my loft and am having an issue with noisy taps - modern mono mixer. Not water hammer, but when they are half on they make a noise that I find unacceptable, yet my plumber insists this is just the way it is. However, my other taps...
  7. J

    Can anyone help to problem solve this noise from hot water system?

    Hot water system making a very high pitched squeal. Very loud when using the bath upstairs, not as loud in the downstairs kitchen but water pressure has dropped. My step dad (not a plumber) has changed the combination valve but no luck. Any suggestions? Thanks! Attached are videos of the noise...
  8. P

    What could be causing a noise in the house like a fog horn?

    Hi, We live in a bungalow. We are awaiting a plumber to check for water hammer but not sure if there are other things that may be causing the noises in our property. There is a booming noise about every 10 seconds followed by an echo. It starts at random times during the day and continues well...
  9. M

    Continuous noise from indirect water cylinder

    I have moved into a house with a Joule Cyclone CY200L indirect cylinder in my loft. Recently it seems to continuously be making a noise, as if it's filling up or heating up, I'm not sure which. The thermostat on the side is set to 55, when I turn it below 50 there is a click and then the noise...
  10. R

    Loud Buzzing Noise From Boiler

    I have an intermitent buzzing noise that is coming from my boiler. The sound is coming from behind the door panel in the vicinity of where the flame occurs. The only other electronics in this area is the gas control valve and the main control panel module. The sounds seems like it may be coming...
  11. G

    What is this noise? Sometimes when shower, bath or toilet is running

    Hi, Just wondering if anyone knows what the cause of this noise might be? Sometimes it is a rumble but today it was this amazingly annoying squeak!
  12. T

    Pipes making noise even when central heating is off

    We have a Grant condensing oil fired boiler in good condition and four years old. Sometimes after a period of use when the central heating has been on, we can hear a rhythmic sound from the pipes and the boiler is not firing up as it should Leave it for a while and turn up thermostat and it...
  13. M

    Loud, pulsating noise from boiler

    Hi, When I turn on the central heating, the boiler makes a loud strange pulsating noise. It doesnt happen when the hot water is turned on, just the central heating. It sounds quite dangerous, like its going to explode. It doesnt always happen as soon as the central heating is turn on, sometimes...
  14. P

    Cylinder noise / Balanced Colds / Pressure etc

    I wanted to start a new more dedicated thread as I am on about 3 just now in one way or another trying to get up to speed with my problem. The issue is that my Gledhill Stainless Lite indirect unvented cylinder makes loud noises when heating - this is a bit random, but that noise is loud enough...
  15. T

    boiler making bubbling noise

    i am a new member sorry if its a wrong section to post just wanna ask this morning i wake up and heard a weird noise (bubbing) coming out of boiler ( cylinder type ) its sounds like water boiling inside it can anyone please tell me the reason and the solution that would be a great help thankyou
  16. C

    URGENT Boiler making strange noise

    Hi, recently our boiler makes a really funny noise like a whale song/squeal for about 10 minutes at start up, then it goes away. its loud enough to wake the family in the mornings
  17. P

    HELP ! intergas boiler making this noise

    Good Evening Everyone My intergas 28-24 boiler which is 5 years old is making this strange noise when I switch the hot water tap off after using it. It’s been going on for a few weeks now. Please see the video Is it something I need to get looked at? I get the boiler serviced every year in...
  18. Y

    Noise from boiler HW only

    Hi there, Boiler is making strange rumbling noise when HW only. Doesn't make the noise with CH only or CH + HW on. Is a Y plan system. Have checked the magnacleanse/filter and all is clear. Boiler has been recently serviced and burner gasket was replaced but I'm assuming that doesn't wouldn't...
  19. J

    URGENT What is this noise and how can I stop it permanently?

    Hi There just wondering what this sound could be. It’s defo coming from the radiator as when I push or shake the radiator it stops. However it comes back eventually. It’s like a click noise. I have time stamped when it happens in this video. Please IGNORE THE WIND NOISE as that is clearly coming...
  20. A

    Toilet constantly making a flushing noise

    Hi, in my en-suite I have a toilet that is constantly making a flushing noise and water is dribbling in too the pan what do I need to stop this? I have some photos