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Buzzing through party wall victorian property
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<blockquote data-quote="phil d" data-source="post: 452027" data-attributes="member: 27126"><p>Sound is a funny thing, sometimes it can appear to be coming from totally the opposite direction from where it really is, could it be a heating pump, or something similar? you'll have to ask some questions to get to the bottom of it, but people will need to think carefully.</p><p></p><p>I remember 2 incidents involving faults on alarm systems, on the first one, the alarm went off every weekday at 4.30 pm, I asked the customer what happened at that time. He was adamant nothing happened, "we don't get in from work until 5" he insisted, a bit more digging and I discovered his heating came on at 4.30 and it was a cable picking up an induced current that was causing the alarm to trigger.</p><p></p><p>The second one involved a guy who we'd installed a system for, again it went off around the same time on certain nights of the week, he insisted nothing happened on those nights, it turned out he had a coal fire and banked it up before going out, the flames leaping up suddenly were triggering the pir, it was obvious when he thought about it, trouble was he didn't think.</p><p></p><p>It could be absolutely anything, the trouble is people don't think of things making a noise, mention a hoover and they'll say, "oh yes, but we don't hoover at that time, yet they'll forget about the electric can opener, because they don't think of it as loud, yet it could resonate and be heard elsewhere. I'm not saying it is a can opener, nobody would open that many can's, but you get the idea.</p><p></p><p>I remember a security alert at an airport, a buzzing noise could be heard in the cargo hold of a plane, it was emptied and all the luggage checked, the cause was found to be a "ladies toy" that was in a suitcase, now you'd never expect one of those to be very loud would you?</p></blockquote><p></p>
[QUOTE="phil d, post: 452027, member: 27126"] Sound is a funny thing, sometimes it can appear to be coming from totally the opposite direction from where it really is, could it be a heating pump, or something similar? you'll have to ask some questions to get to the bottom of it, but people will need to think carefully. I remember 2 incidents involving faults on alarm systems, on the first one, the alarm went off every weekday at 4.30 pm, I asked the customer what happened at that time. He was adamant nothing happened, "we don't get in from work until 5" he insisted, a bit more digging and I discovered his heating came on at 4.30 and it was a cable picking up an induced current that was causing the alarm to trigger. The second one involved a guy who we'd installed a system for, again it went off around the same time on certain nights of the week, he insisted nothing happened on those nights, it turned out he had a coal fire and banked it up before going out, the flames leaping up suddenly were triggering the pir, it was obvious when he thought about it, trouble was he didn't think. It could be absolutely anything, the trouble is people don't think of things making a noise, mention a hoover and they'll say, "oh yes, but we don't hoover at that time, yet they'll forget about the electric can opener, because they don't think of it as loud, yet it could resonate and be heard elsewhere. I'm not saying it is a can opener, nobody would open that many can's, but you get the idea. I remember a security alert at an airport, a buzzing noise could be heard in the cargo hold of a plane, it was emptied and all the luggage checked, the cause was found to be a "ladies toy" that was in a suitcase, now you'd never expect one of those to be very loud would you? [/QUOTE]
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