DE69001908D1 - Akustisches analysegeraet und ein dabei verwendetes frequenzumwandlungsgeraet. - Google Patents

Akustisches analysegeraet und ein dabei verwendetes frequenzumwandlungsgeraet.

Info

Publication number
DE69001908D1
DE69001908D1 DE9090300717T DE69001908T DE69001908D1 DE 69001908 D1 DE69001908 D1 DE 69001908D1 DE 9090300717 T DE9090300717 T DE 9090300717T DE 69001908 T DE69001908 T DE 69001908T DE 69001908 D1 DE69001908 D1 DE 69001908D1
Authority
DE
Germany
Prior art keywords
frequency conversion
apparatus used
conversion apparatus
acoustic analyzer
analyzer
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.)
Expired - Fee Related
Application number
DE9090300717T
Other languages
English (en)
Other versions
DE69001908T2 (de
Inventor
Hiroshi Furuya
Yasushi Shimizu
Fukushi Kawakami
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.)
Yamaha Corp
Original Assignee
Yamaha Corp
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 Yamaha Corp filed Critical Yamaha Corp
Publication of DE69001908D1 publication Critical patent/DE69001908D1/de
Application granted granted Critical
Publication of DE69001908T2 publication Critical patent/DE69001908T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
    • G01H3/00—Measuring characteristics of vibrations by using a detector in a fluid
    • G01H3/04—Frequency
    • G01H3/08—Analysing frequencies present in complex vibrations, e.g. comparing harmonics present
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
    • G01H3/00—Measuring characteristics of vibrations by using a detector in a fluid
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
    • G01H7/00—Measuring reverberation time ; room acoustic measurements
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
    • G09B23/00—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes
    • G09B23/06—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics
    • G09B23/14—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for acoustics

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Mathematical Optimization (AREA)
  • Computational Mathematics (AREA)
  • Mathematical Analysis (AREA)
  • Algebra (AREA)
  • Mathematical Physics (AREA)
  • Pure & Applied Mathematics (AREA)
  • Business, Economics & Management (AREA)
  • Acoustics & Sound (AREA)
  • Educational Administration (AREA)
  • Educational Technology (AREA)
  • Theoretical Computer Science (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
DE90300717T 1989-01-27 1990-01-23 Akustisches Analysegerät und ein dabei verwendetes Frequenzumwandlungsgerät. Expired - Fee Related DE69001908T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1989008914U JPH05827Y2 (de) 1989-01-27 1989-01-27

Publications (2)

Publication Number Publication Date
DE69001908D1 true DE69001908D1 (de) 1993-07-22
DE69001908T2 DE69001908T2 (de) 1993-11-18

Family

ID=11705927

Family Applications (1)

Application Number Title Priority Date Filing Date
DE90300717T Expired - Fee Related DE69001908T2 (de) 1989-01-27 1990-01-23 Akustisches Analysegerät und ein dabei verwendetes Frequenzumwandlungsgerät.

Country Status (4)

Country Link
US (1) US5392381A (de)
EP (1) EP0380310B1 (de)
JP (1) JPH05827Y2 (de)
DE (1) DE69001908T2 (de)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3701671B2 (ja) * 1993-06-21 2005-10-05 ブリテイッシュ・テレコミュニケーションズ・パブリック・リミテッド・カンパニー 冗長性の減少された試験信号を使用する通信装置の試験方法および装置
DE19847015A1 (de) * 1998-10-13 2000-04-20 Bosch Gmbh Robert Vorrichtung und Verfahren zum digitalen Aufzeichnen eines analogen Audiosignals in einem digitalen Speicher
WO2005078945A1 (en) * 2004-02-13 2005-08-25 Matsushita Electric Industrial Co., Ltd. Wireless communications system and wireless digital receiver for use therein
JP2008224306A (ja) * 2007-03-09 2008-09-25 Nippon Telegraph & Telephone East Corp スペクトラム解析装置
CN101958073B (zh) * 2010-09-09 2012-01-18 德州学院 声音特性综合实验仪
CN102005148A (zh) * 2010-09-21 2011-04-06 德州学院 自动驻波实验仪
CN103512650A (zh) * 2012-06-21 2014-01-15 鸿富锦精密工业（深圳）有限公司 蜂鸣器测试电路
CN104091500A (zh) * 2014-06-10 2014-10-08 李建荣 一种比较物体传声能力的装置
CN104330152A (zh) * 2014-11-25 2015-02-04 重庆矢崎仪表有限公司 一种蜂鸣器声音测试电路
US10354673B2 (en) * 2018-01-24 2019-07-16 Hisense Mobile Communications Technology Co., Ltd. Noise reduction method and electronic device
US11132177B2 (en) * 2019-05-14 2021-09-28 International Business Machines Corporation CMOS-compatible high-speed and low-power random number generator

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS602680B2 (ja) * 1981-06-18 1985-01-23 三洋電機株式会社 音声合成装置
US4627090A (en) * 1982-07-19 1986-12-02 Smith Engineering Audio frequency multiplication device
DE3233288A1 (de) * 1982-09-08 1984-03-08 Robert Bosch Gmbh, 7000 Stuttgart System zur zeitlichen kompression und/oder expansion von elektrischen signalen

Also Published As

Publication number Publication date
EP0380310B1 (de) 1993-06-16
JPH05827Y2 (de) 1993-01-11
US5392381A (en) 1995-02-21
JPH02101238U (de) 1990-08-13
EP0380310A2 (de) 1990-08-01
EP0380310A3 (de) 1991-05-29
DE69001908T2 (de) 1993-11-18

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee