GB1305894A - - Google Patents

Info

Publication number
GB1305894A
GB1305894A GB1305894DA GB1305894A GB 1305894 A GB1305894 A GB 1305894A GB 1305894D A GB1305894D A GB 1305894DA GB 1305894 A GB1305894 A GB 1305894A
Authority
GB
United Kingdom
Prior art keywords
transducers
filters
vibrations
pass
locating
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
Application number
Other languages
English (en)
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
Publication of GB1305894A publication Critical patent/GB1305894A/en
Expired 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
  • Vibration Prevention Devices (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
GB1305894D 1969-01-08 1969-01-08 Expired GB1305894A (enrdf_load_stackoverflow)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB118869 1969-01-08

Publications (1)

Publication Number Publication Date
GB1305894A true GB1305894A (enrdf_load_stackoverflow) 1973-02-07

Family

ID=9717702

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1305894D Expired GB1305894A (enrdf_load_stackoverflow) 1969-01-08 1969-01-08

Country Status (1)

Country Link
GB (1) GB1305894A (enrdf_load_stackoverflow)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3125981A1 (de) * 1981-07-01 1983-03-03 German Dipl.-Ing. 8061 Hebertshausen Grimm Ueberwachungsschaltung zum schutz von auf einer mehrzahl von fuessen abgestuetzten einrichtungen, insbesondere hochspannungsleitungsmasten
DE3204698A1 (de) * 1981-07-01 1983-08-18 German Dipl.-Ing. 8061 Hebertshausen Grimm Ueberwachungsschaltung zum schutz von auf einer mehrzahl von fuessen abgestuetzten einrichtungen, insbesondere hochspannungsleitungsmasten
CH677761A5 (en) * 1989-02-20 1991-06-28 Hans Wepfer Tractor coupling monitoring device - uses microphone to detect noise emitted by coupling fed to loudspeaker within tractor cab

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3125981A1 (de) * 1981-07-01 1983-03-03 German Dipl.-Ing. 8061 Hebertshausen Grimm Ueberwachungsschaltung zum schutz von auf einer mehrzahl von fuessen abgestuetzten einrichtungen, insbesondere hochspannungsleitungsmasten
DE3204698A1 (de) * 1981-07-01 1983-08-18 German Dipl.-Ing. 8061 Hebertshausen Grimm Ueberwachungsschaltung zum schutz von auf einer mehrzahl von fuessen abgestuetzten einrichtungen, insbesondere hochspannungsleitungsmasten
CH677761A5 (en) * 1989-02-20 1991-06-28 Hans Wepfer Tractor coupling monitoring device - uses microphone to detect noise emitted by coupling fed to loudspeaker within tractor cab

Similar Documents

Publication Publication Date Title
US4629834A (en) Apparatus and method for vibratory signal detection
JPS5852780Y2 (ja) マイクロホン
DE68907265D1 (de) Aktive akustische daempfungsanordnung mit differenzfilterung.
US4074070A (en) Supersonic signal linearizes loudspeaker operation
ES8202211A1 (es) Un dispositivo para convertir una senal electrica en una se-nal acustica
GB1305894A (enrdf_load_stackoverflow)
US3477280A (en) Multipoint vibration detector
US5335282A (en) Signal summing non-microphonic differential microphone
SE320760B (enrdf_load_stackoverflow)
GB1486808A (en) Radio receivers
JPS5940798A (ja) マイクロホンの雑音低減装置
US3267222A (en) Intercommunication test set
US4653101A (en) Audio reverberator
US3530394A (en) Audio frequency reject filter
SU1038903A1 (ru) Устройство дл регистрации вибрационных сейсмических сигналов
SU1762384A1 (ru) Рекурсивный фильтр на поверхностных акустических волнах (ПАВ)
SU1582195A1 (ru) Устройство шумопонижени
JPS56104222A (en) Trouble shooting device of pressure-oil pump motor
SU1653128A1 (ru) Широкополосный усилитель
JPS52127140A (en) Receiver
US1904605A (en) Crystal rejector circuit
SU1469484A1 (ru) Устройство дл подавлени узкополосной помехи
JPS5465022A (en) Driving circuit system of multiway speakers
GB2122042A (en) High-efficiency audio-amplifier
SU530228A1 (ru) Устройство дл измерени износа режущего инструмента

Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee