发明名称 Telefon med förbättrad lågfrekvensåtergivning
摘要 A telephone has a loudspeaker mounted behind an earpiece portion of a housing, a center region of the earpiece portion having at least one central sound opening, through which sound generated by the loudspeaker is emitted. At least one bass sound opening is located in the housing remotely from the central sound opening, and devices are provided for generating sound with enhanced low-frequency characteristics through the bass sound opening.
申请公布号 SE9800909(L) 申请公布日期 1999.09.20
申请号 SE19980000909 申请日期 1998.03.19
申请人 ERICSSON TELEFON AB L M 发明人 NORDSTROEM JOHAN
分类号 H04M1/60;H04R1/22;(IPC1-7):H04R1/22 主分类号 H04M1/60
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