dub

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dub

the sound of a drum

dub

[dəb]
(engineering acoustics)
To transfer recorded material from one recording to another, with or without the addition of new sounds, background music, or sound effects.
To combine two or more sources of sound into one record.
To add a new sound track or new sounds to a motion picture film, or to a recorded radio or television production.

dub

To strike, cut, rub, or dress so as to smooth a surface.

dub

To add or overlay sound onto an existing audio track or video in a post production environment. For example, additional instruments or voices can be mixed in with the original sound tracks of a song. See also dub-dub-dub.