by combining a number of identical transducers

Introduced: September 1968

Last revised: January 2006

Full Title

Details of transducers > Arrangements for obtaining desired frequency or directional characteristics > for obtaining desired directional characteristic only > by combining a number of identical transducers

Classification Context

Section:: ELECTRICITY
Class:: ELECTRIC COMMUNICATION TECHNIQUE
Subclass:: LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS

Scope Notes

Limiting references: Combining a number of identical transducers for stereophonic purpose ; | Application references: Combining a number of identical transducers specially adapted for electric hearing aids