Active sound absorption system for e.g. ventilation ducts
摘要
The sound absorption system splits a large ducts into smaller single ducts. A control unit operates in groups the acoustic transducers of several single ducts via an amplifier. Preferably, the control unit operates all acoustic transducers of the single ducts. Microphones or microphone arrays are provided before the splitting. The microphones may be provided in the single ducts.
申请公布号
DE19727617(A1)
申请公布日期
1999.01.07
申请号
DE19971027617
申请日期
1997.06.28
申请人
ABS GESELLSCHAFT FUER AUTOMATISIERUNG, BILDVERARBEITUNG UND SOFTWARE MBH, 07745 JENA, DE