A sound with a particular timbre, usually a monotone or with slightly varying tones, often produced by machinery in operation or by insects in flight, or
An action whereby a human vocally produces such a sound, but usually with musically varying tonality.
The action of humming is produced simply by producing a wordless tone, such as in scat singing (a wordless form of singing), but with the mouth completely closed so that the sound emerges from the nose. This necessarily keeps the volume at a low level, so humming is often not useful in musical productions, but is nonetheless sometimes used.
Often, people hum either individually or when in group singing when they don't know the words.
Frank Zappa used hum as a pun in his song, Dynamo Hum, with the reference being both to the hum made by a generator (dynamo) in operation, and to the humming action of a woman giving fellatio.
Ciofalo has company, other people who complain of hearing a persistent hummingsound, usually when they are in their homes seeking peace and quiet from a busy world.
The people who hear a hum do not appear to be suffering from tinnitus, a persistent ringing in the ear that is not produced by an external source.
The hum, however, continues for some people in that area who share their problem by writing about it in local newspapers or in online discussion forums.
The action of humming is produced simply by producing a wordless tone, such as in scat singing or vocables (wordless forms of singing), but with the mouth completely closed so that the sound emerges from the nose.
Frank Zappa used hum as a pun in his song, DynamoHum, with the reference being both to the hum made by a generator (dynamo) in operation, and to the humming action of a woman giving fellatio.