(under the class definition) Subject matter specifically arranged for recording or reproducing a signal in such a manner that the signal, as recorded, has redundant portions deleted therefrom or, as reproduced, occupies a different amount of time or a different band of frequencies than that occupied by the original signal.
(1) Note. Changes in either or both of duration and frequency may be produced by the subject matter of this and indented subclasses.
SEE OR SEARCH CLASS
704, Data Processing: Speech Signal Processing, Linguistics, Language Translation, and Audio Compression/Decompression,
500, 504 for bandwidth, or time compression, or expansion of
