ELECTROACOUSTIC FILTER COMPRISING LOW-PASS CHARACTERISTICS

摘要

The invention relates to an electroacoustic filter (EAF) having improved low-pass characteristics. The filter comprises a first electroacoustic converter (TD1), an electroacoustic element (AE) and a grid structure (GS) between the converter and the element. The grid structure is acoustically active in one frequency range which lies above the acoustically active frequency range of the first electroacoustic converter.