发明名称 Sound absorption system for automobile
摘要 The sound absorption system has a Helmholtz resonator (1) employing a sound wave pressure generator (4), allowing the absorption level and/or the bandwidth of the sound absorption system to be given by simulation of a parameter of the Helmholtz resonator independent of the hollow volume. Pref. the simulated parameter defining the absorption bandwidth of the sound absorption system is proportional to the damping of the air mass within the neck (3) of the Helmholtz resonator.
申请公布号 DE4446080(A1) 申请公布日期 1996.06.27
申请号 DE19944446080 申请日期 1994.12.22
申请人 BAYERISCHE MOTOREN WERKE AG 发明人 BEER, RAINER, 80937 MUENCHEN, DE;FREYMANN, RAYMOND, DR., 85386 ECHING, DE;SPANNHEIMER, HELMUT, 85630 GRASBRUNN, DE
分类号 G10K11/172;(IPC1-7):G10K11/172;B60R13/08 主分类号 G10K11/172
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