IPC Main Group
H03G 7/00 Volume compression or expansion in amplifiers
Introduced: September 1968
Last revised: January 2006
Classification Context
- Section:
- ELECTRICITY
- Class:
- ELECTRONIC CIRCUITRY
- Subclass:
- CONTROL OF AMPLIFICATION
Related Keywords
compressing or expanding VOLUME [= amplitude of audio signals]
2 direct subcodes
Child Classifications
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