(under subclass 1) Subject matter wherein the output signal is a selected component of a multicomponent input signal.
SEE OR SEARCH THIS CLASS, SUBCLASS:
35, for pulse separating by width or spacing.
551+, for miscellaneous signal suppression which may include an active filter.
SEE OR SEARCH CLASS
307, Electrical Transmission or Interconnection Systems,
105, for harmonic filters or neutralizing systems, in general.
324, Electricity: Measuring and Testing, 332+, for geophysical exploration systems utilizing radiant energy with separate detector means whereby signal components are selected or suppressed and subclasses 76.12+ for measuring systems which analyze complex electric waves.
330, Amplifiers, appropriate subclasses for frequency selective linear amplifiers.
331, Oscillators,
76, and 77 for oscillator systems combined with harmonic selecting means or wave filter, respectively, in the output circuit.
333, Wave Transmission Lines and Networks, appropriate subclasses for passive type wave selecting systems, particularly
167+, for wave filters, per se.
340, Communications: Electrical,
825.71+, for selective systems which are frequency responsive.
348, Television,
506, for burst separation circuitry, subclasses 525+ for separating the synchronizing components from a composite signal wave, and subclasses 638+ for color signal deriving circuitry.
704, Data Processing: Speech Signal Processing, Linguistics, Language Translation, and Audio Compression/Decompression, 200, for systems for analyzing complex speech waves (e.g., where the fundamental pitch frequency of the human voice is determined).
