A Circular Rolled Diaphragm Tweeter Capable of Reproducing Super Treble Sound

4 References
  • TAMURA Kazuaki
    Audio Team 1, Consumer Products Development Group AVC Products Development Laboratory, AVC Company Matsushita Electric Industrial Co.,Ltd.
  • TANAKA Syoji
    Audio Team 1, Consumer Products Development Group AVC Products Development Laboratory, AVC Company Matsushita Electric Industrial Co.,Ltd.

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Other Title
  • 超高域再生 環状ロール振動板ツィータ

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Description

We developed a tweeter capable of reproducing super treble sound widely applicable to general and moderate audio product's loudspeakers, intended to improve tone quality or correspond to the audio format in DVD. Circular-rolled-shaped -like a upper surface of horizontally layed doughnut- diaphragm was devised, possessing higher treble resonance frequency, wide directivity, lesser cavity effect and driverbility with a small voice-coil. The cross section curve of the diaphragm wad fitted by computer FEM simulation. Air permeability in outer portion of the diaphragm with the unique paper making process realized to damp lower frequency resonance peak. Finally, using general pulp material, we realized reproducing frequency range up to 40kHz, smooth response in audible range and wide directivity rival with dome type tweeter.

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Details 詳細情報について

  • CRID
    1571135652383665408
  • NII Article ID
    110003188145
  • NII Book ID
    AN1001290X
  • Text Lang
    ja
  • Data Source
    • CiNii Articles

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