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variable-density

adjective
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Definition of variable-density

: being or relating to a motion-picture sound track in which the sounds are represented as parallel lines that are at right angles to the length of the film and that vary in density in accordance with the volume and pitch of the recorded sound variable-density track — compare variable-area

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“Variable-density.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/variable-density. Accessed 19 Jun. 2021.

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