IPC Subgroup
H04R 1/22 for obtaining desired frequency characteristic only
Introduced: September 1968
Last revised: January 2006
Full Title
Details of transducers > Arrangements for obtaining desired frequency or directional characteristics > for obtaining desired frequency characteristic only
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
4 direct subcodes
Child Classifications
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- H04R 1/24 Structural combinations of separate transducers or of parts of the same transducer and responsive respectively to two or more frequency ranges
- H04R 1/26 Spatial arrangement of separate transducers responsive to two or more frequency ranges
- H04R 1/28 Transducer mountings or enclosures designed for specific frequency response; Transducer enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
- H04R 1/3 Combinations of transducers with horns, e.g. with mechanical matching means