Band logical transducer system with long port

Band logical transducer system with long port

  • CN 101,461,254 B
  • Filed: 09/05/2006
  • Issued: 11/07/2017
  • Est. Priority Date: 09/20/2005
  • Status: Active Grant
First Claim
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1. one kind is used for driving the equipment (1) of transducer unit (20), the transducer unit (20) includes at least one transducer(21) at least one described transducer and shell (22), is accommodated in shell (22), the equipment includes mapping device (10), usesInput signal component is mapped to the second audio frequency range (II) from the first audio frequency range (I),Wherein the second audio frequency range (II) is narrower than the first audio frequency range (I), and wherein the second audio frequency range(II) the Helmholtz frequencies (f of transducer unit (20) is includedH),Wherein shell (22) defines the volume V between transducer (21) and pipe (23)1, the volume meets equation:

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