IPC Subgroup
G01R 23/165 using filters
Introduced: January 1980
Last revised: January 2006
Full Title
Arrangements for measuring frequencies; Arrangements for analysing frequency spectra > Spectrum analysis; Fourier analysis > using filters
Classification Context
- Section:
- PHYSICS
- Class:
- MEASURING; TESTING
- Subclass:
- MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
1 direct subcode
Child Classifications
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- G01R 23/167 with digital filters