JPS63299499A - パラポラコ−ン - Google Patents

パラポラコ−ン

Info

Publication number
JPS63299499A
JPS63299499A JP13147987A JP13147987A JPS63299499A JP S63299499 A JPS63299499 A JP S63299499A JP 13147987 A JP13147987 A JP 13147987A JP 13147987 A JP13147987 A JP 13147987A JP S63299499 A JPS63299499 A JP S63299499A
Authority
JP
Japan
Prior art keywords
cone
speaker
parabolic cone
sound
shape
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP13147987A
Other languages
English (en)
Inventor
Takamune Takei
武井　隆宗
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to JP13147987A priority Critical patent/JPS63299499A/ja
Publication of JPS63299499A publication Critical patent/JPS63299499A/ja
Pending legal-status Critical Current

Links

Landscapes

  • Diaphragms For Electromechanical Transducers (AREA)

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。

Description

【発明の詳細な説明】 スピーカーの音の指向特性をゼロにする為に、コ ーン
の形状を放物曲面にすること。

Claims (1)

    【特許請求の範囲】
  1. スピーカーに於ける、音の指向特性を根本的に改善する
    目的の範囲に於ける、パラポラコーンの使用。
JP13147987A 1987-05-29 1987-05-29 パラポラコ−ン Pending JPS63299499A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13147987A JPS63299499A (ja) 1987-05-29 1987-05-29 パラポラコ−ン

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13147987A JPS63299499A (ja) 1987-05-29 1987-05-29 パラポラコ−ン

Publications (1)

Publication Number Publication Date
JPS63299499A true JPS63299499A (ja) 1988-12-06

Family

ID=15058938

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13147987A Pending JPS63299499A (ja) 1987-05-29 1987-05-29 パラポラコ−ン

Country Status (1)

Country Link
JP (1) JPS63299499A (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6556687B1 (en) 1998-02-23 2003-04-29 Nec Corporation Super-directional loudspeaker using ultrasonic wave

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6556687B1 (en) 1998-02-23 2003-04-29 Nec Corporation Super-directional loudspeaker using ultrasonic wave

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