Voice compression may mean different things:

• Speech encoding refers to compression for transmission or storage, possibly to an unintelligible state, with decompression used prior to playback.
• Time-compressed speech refers to voice compression for immediate playback, without any decompression (so that the final speech sounds faster to the listener).
• Audio level compression refers to a sound recording effect which increases the perceived volume of a sound.

This disambiguation page lists articles associated with the title Voice compression.
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