vibrations

Vibration is a mechanical phenomenon whereby oscillations occur about an equilibrium point. The word comes from Latin vibrationem ("shaking, brandishing"). The oscillations may be periodic, such as the motion of a pendulum—or random, such as the movement of a tire on a gravel road.
Vibration can be desirable: for example, the motion of a tuning fork, the reed in a woodwind instrument or harmonica, a mobile phone, or the cone of a loudspeaker.
In many cases, however, vibration is undesirable, wasting energy and creating unwanted sound. For example, the vibrational motions of engines, electric motors, or any mechanical device in operation are typically unwanted. Such vibrations could be caused by imbalances in the rotating parts, uneven friction, or the meshing of gear teeth. Careful designs usually minimize unwanted vibrations.
The studies of sound and vibration are closely related. Sound, or pressure waves, are generated by vibrating structures (e.g. vocal cords); these pressure waves can also induce the vibration of structures (e.g. ear drum). Hence, attempts to reduce noise are often related to issues of vibration.

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  1. alainrj

    Excessive noise and vibrations when playing CDs on Audiolab 7000 CDT

    Am hearing loud rumbling noises and feeling excessive vibrations coming from my new Audiolab 7000 CDT when playing CDs. The effect is worst on Track 1 of an affected CD and gradually lessens and disappears as the CD is played. About 100 CDs are affected in total. I didn't experience this...
  2. S

    Isolation

    Just picked up my new Pro Ject Primary E, which im delighted with, lovely sound. Its very sensitive to vibrations compared to my previous turntable. Just walking past can create distortion or even make the needle jump, I live in an old flat with squidgy wooden floors so I tiptoe around while...
  3. S

    Monting a TV in an automobile factory. Looking for a sofisticated TV Mount

    Hey everybody! I've encountered a delicate issue here. Looks like LCD TVs seem to leack after a while instulled at a factory facility with ponding heavy machinery. Looking for a TV mont with some sort of compensator, or ani-vibrational quolities that will allow me to safely instull a TV at a...
  4. Paulie A

    Speaker panel - best design?

    hi guys. Can someone tell me what would be the best way to reduce vibrations from the below designs? this is a speaker mounting plate for the rear of my car that i am 3D printing. I am unsure if having a "window" (on the left design) would compromise the sound quality or induce or reduce...
  5. TechShoe

    How powerful would WiFi need to be to feel it as vibrations on the skin?

    Hi, How powerul would WiFi need to be in order to feel it as vibrations on the skin? What other factors would influence WiFi causing such a sensation? o_O
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