If the noise is more like eggs frying on a pan, (with sizzling sounds) then you may have a dangerous electrical condition that could start a fire called an arc-fault.
If this is the case, the power should be turned off right away and investigated by a licensed electrician.
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A buzzing sound coming from the ceiling in the hallway could be due to an electrical issue, such as a loose wire or a faulty light fixture. It is important to investigate the source of the sound and address it promptly to prevent any potential safety hazards. If unsure, it is recommended to contact a certified electrician for further inspection and assistance.
A buzzing noise in a newly installed ceiling light can be caused by loose wiring connections, incompatible dimmer switches, or a faulty driver or ballast. Make sure all the connections are secure, switch to a compatible dimmer if necessary, and consider replacing the driver or ballast if the issue persists.
A bomb explosion travels faster than the humming of a bee because the explosion produces a shockwave that moves at the speed of sound in the medium (air), which is much faster than the buzzing sound produced by a bee.
The reflection of sound waves off of walls, floor, ceiling, seats, and people causes reverberation.
Dimmer switches control the amount of electricity flowing to the light fixture by rapidly turning the power on and off. This rapid cycling can cause the light fixture to vibrate or emit a buzzing sound, especially if the light fixture is not compatible with the dimmer switch. Upgrading to a dimmer switch designed for the specific type of light fixture can help reduce or eliminate the noise.
To prevent echoes in auditoriums, you can use sound-absorbing materials such as acoustic panels or curtains to reduce sound reflections. Additionally, placing carpeting or other soft furnishings can help absorb sound. Properly positioning speakers and microphones can also help minimize echoes.