AUDIO SIGNAL TIME COMPRESSION OR EXPANSION (E.G., RUN LENGTHCODING):
(under the class definition) Subject matter where there is either an expansion or reduction of the time required for transmission of a nonspeech sound signal.
SEE OR SEARCH THIS CLASS, SUBCLASS:
211+, for expansion or reduction of the time required for transmission of a speech signal.
500+, for frequency compression or expansion of a nonspeech audio signal.
SEE OR SEARCH CLASS
358, Facsimile,
426+, for time compression of a facsimile signal. 360, Dynamic Magnetic Information Storage or Retrieval,
8+, for the use of a magnetic recorder to alter the time duration of a recorded signal.
369, Dynamic Information Storage or Retrieval,
60, for the use of a dynamic storage device to alter the time duration of a recorded signal.
370, Multiplex Communications,
109, for time compression or expansion in a time division multiplex system.
381, Electrical Audio Signal Processing Systems and Devices,
106, for amplitude compression or expansion.
455, Telecommunications,
72, for message signal compression or expansion in an analog signal modulated carrier wave communication system.
