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US RE47935

How Digital Audio Compression Saves Space by Copying Frequencies

A method for shrinking audio files by only saving the lower-pitched sounds and using clever math to reconstruct the higher-pitched sounds from them.

Statusactive

Granted2020

Expires2037

Claims34

Forward citations0

Prior art41

AssigneeDolby International AB

InventorsKosuke Nishio, Takeshi Norimatsu +2

Patent B

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