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PCE
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DIFF Subgroup
H04R 1/28

Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means

Introduced: September 1968

Title

Titles differ between systems:

IPC: Transducer mountings or enclosures designed for specific frequency response; Transducer enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means

CPC: Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means

Full Title

Full titles differ between systems:

IPC:

Details of transducers > Arrangements for obtaining desired frequency or directional characteristics > for obtaining desired frequency characteristic only > Transducer mountings or enclosures designed for specific frequency response; Transducer enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means

CPC:

Details of transducers, > Arrangements for obtaining desired frequency or directional characteristics (for stereophonic purpose H04R5/00) > for obtaining desired frequency characteristic only > Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means

Of 3 combined children, 0 exist in both systems.

3 codes are CPC-only extensions.

Child Classifications

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