The consistent whirring can be distracting if you plan to use the diffuser for meditation or in quiet environments.
While there are those couples who do everything they can do make sure the press gets wind of their special day, there are those who would rather not exchange vows over the sounds of whirring helicopters and clicking cameras.
You can enjoy a television program without having to increase the volume to overcome the whirring sounds of a fan.
A low humming or whirring noise typically emits from the machine as the mechanisms rotate.
When you turn on your battery powered dog nail file, you will notice that it makes a whirring noise.
The other custom is the use of the turndun, as the Australians call a little fish-shaped piece of wood tied to a string, and waved so as to produce a loud booming and whirring noise and keep away the profane, especially women.
"Look out!" came a frightened cry from a soldier and, like a bird whirring in rapid flight and alighting on the ground, a shell dropped with little noise within two steps of Prince Andrew and close to the battalion commander's horse.
And at once, as a clock begins to strike and chime as soon as the minute hand has completed a full circle, this change was shown by an increased activity, whirring, and chiming in the higher spheres.
Of silence, and the two speakers would be on common ground when the native indicated by the name bwirri his cudgel, flung whirring through the air at a flock of birds, or when the native described as a jakkal-yakkal the bird called by the foreigner a cockatoo.
Whichever side you walk in the woods the partridge bursts away on whirring wings, jarring the snow from the dry leaves and twigs on high, which comes sifting down in the sunbeams like golden dust, for this brave bird is not to be scared by winter.