JPH03114898U - - Google Patents

Info

Publication number
JPH03114898U
JPH03114898U JP2310790U JP2310790U JPH03114898U JP H03114898 U JPH03114898 U JP H03114898U JP 2310790 U JP2310790 U JP 2310790U JP 2310790 U JP2310790 U JP 2310790U JP H03114898 U JPH03114898 U JP H03114898U
Authority
JP
Japan
Prior art keywords
acoustic
acoustic reflector
reflector
reflectors
disposed
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.)
Granted
Application number
JP2310790U
Other languages
English (en)
Japanese (ja)
Other versions
JP2501440Y2 (ja
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 filed Critical
Priority to JP1990023107U priority Critical patent/JP2501440Y2/ja
Publication of JPH03114898U publication Critical patent/JPH03114898U/ja
Application granted granted Critical
Publication of JP2501440Y2 publication Critical patent/JP2501440Y2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
  • Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
JP1990023107U 1990-03-07 1990-03-07 音響反射集束装置 Expired - Lifetime JP2501440Y2 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1990023107U JP2501440Y2 (ja) 1990-03-07 1990-03-07 音響反射集束装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1990023107U JP2501440Y2 (ja) 1990-03-07 1990-03-07 音響反射集束装置

Publications (2)

Publication Number Publication Date
JPH03114898U true JPH03114898U (US20100056889A1-20100304-C00004.png) 1991-11-26
JP2501440Y2 JP2501440Y2 (ja) 1996-06-19

Family

ID=31526106

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1990023107U Expired - Lifetime JP2501440Y2 (ja) 1990-03-07 1990-03-07 音響反射集束装置

Country Status (1)

Country Link
JP (1) JP2501440Y2 (US20100056889A1-20100304-C00004.png)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006109339A (ja) * 2004-10-08 2006-04-20 Yamaha Corp 音響システム
JP2010230506A (ja) * 2009-03-27 2010-10-14 Railway Technical Res Inst 鉄道車両の車軸軸受の異常検知装置及びその方法

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0349398A (ja) * 1989-07-17 1991-03-04 Nippon Telegr & Teleph Corp <Ntt> 音声入出力方式

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0349398A (ja) * 1989-07-17 1991-03-04 Nippon Telegr & Teleph Corp <Ntt> 音声入出力方式

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006109339A (ja) * 2004-10-08 2006-04-20 Yamaha Corp 音響システム
JP2010230506A (ja) * 2009-03-27 2010-10-14 Railway Technical Res Inst 鉄道車両の車軸軸受の異常検知装置及びその方法

Also Published As

Publication number Publication date
JP2501440Y2 (ja) 1996-06-19

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