CPC Subgroup
H04R 1/24 Structural combinations of separate transducers or of two parts of the same transducer and responsive respectively to two or more frequency ranges
Full Title
Details of transducers, > Arrangements for obtaining desired frequency or directional characteristics (for stereophonic purpose H04R5/00) > for obtaining desired frequency characteristic only > Structural combinations of separate transducers or of two parts of the same transducer and responsive respectively to two or more frequency ranges
1 direct subcode
Child Classifications
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