IPC Subgroup
H04S 3/02 of the matrix type, i.e. in which input signals are combined algebraically, e.g. after having been phase shifted with respect to each other
Introduced: January 1980
Last revised: January 2006
Full Title
Systems employing more than two channels, e.g. quadraphonic > of the matrix type, i.e. in which input signals are combined algebraically, e.g. after having been phase shifted with respect to each other
Classification Context
- Section:
- ELECTRICITY
- Class:
- ELECTRIC COMMUNICATION TECHNIQUE
- Subclass:
- STEREOPHONIC SYSTEMS