Rumble (noise)

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A rumble is a form of loud white noise which is often created by a random sound wave existing between certain limitation points.

In an audio context, rumble refers to a low frequency sound from the bearings inside a turntable. This is most noticeable in low quality turntables, with ball bearings. Higher quality turntables use slide bearings, minimizing rumble. Some phono pre-amplifiers implement a rumble filter, in an attempt to remove the noise. A heavier platter can also help dampen this.