GB1506552A - Sound level meter - Google Patents

Sound level meter

Info

Publication number
GB1506552A
GB1506552A GB22329/76A GB2232976A GB1506552A GB 1506552 A GB1506552 A GB 1506552A GB 22329/76 A GB22329/76 A GB 22329/76A GB 2232976 A GB2232976 A GB 2232976A GB 1506552 A GB1506552 A GB 1506552A
Authority
GB
United Kingdom
Prior art keywords
circuit
signal
logarithmic
sound level
averaging
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
GB22329/76A
Other languages
English (en)
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.)
Deere and Co
Original Assignee
Deere and Co
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 Deere and Co filed Critical Deere and Co
Publication of GB1506552A publication Critical patent/GB1506552A/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
    • G01H3/10—Amplitude; Power
    • G01H3/14—Measuring mean amplitude; Measuring mean power; Measuring time integral of power

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
  • Measurement Of Current Or Voltage (AREA)
GB22329/76A 1975-05-30 1976-05-28 Sound level meter Expired GB1506552A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/582,508 US3968697A (en) 1975-05-30 1975-05-30 Sound level meter

Publications (1)

Publication Number Publication Date
GB1506552A true GB1506552A (en) 1978-04-05

Family

ID=24329425

Family Applications (1)

Application Number Title Priority Date Filing Date
GB22329/76A Expired GB1506552A (en) 1975-05-30 1976-05-28 Sound level meter

Country Status (5)

Country Link
US (1) US3968697A (enExample)
CA (1) CA1036264A (enExample)
DE (1) DE2619764C3 (enExample)
FR (1) FR2312765A1 (enExample)
GB (1) GB1506552A (enExample)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4307385A (en) * 1978-11-22 1981-12-22 Sue Ann Evans Noise monitoring apparatus
US4257273A (en) * 1979-07-26 1981-03-24 Minnesota Mining And Manufacturing Company Sound pressure level meter
DE3133703A1 (de) * 1981-08-26 1983-03-10 Robert Bosch Gmbh, 7000 Stuttgart "vorrichtung zum erkennen des klopfens bei brennkraftmaschinen"
US4554639A (en) * 1983-04-06 1985-11-19 E. I. Du Pont De Nemours And Company Audio dosimeter
US4620445A (en) * 1984-10-19 1986-11-04 Westinghouse Electric Corp. Portable acoustic intensity measuring device
DE3916727A1 (de) * 1989-05-23 1990-11-29 Baeuerle Dieter Verfahren und vorrichtung zur aufnahme und bewertung einer folge von unregelmaessigen geraeuschen
DE4304814A1 (de) * 1993-02-17 1994-08-18 Kronseder Maschf Krones Verfahren zur Beeinflussung der Transportgeschwindigkeit
KR100742140B1 (ko) * 1999-03-30 2007-07-24 퀄컴 인코포레이티드 이동전화 스피커와 마이크로폰 이득을 자동으로 조정하는방법 및 장치
US20080144838A1 (en) * 2005-08-25 2008-06-19 Raines Janet S Tamper resistant audio sound level detector and informative device
IT201600124340A1 (it) * 2017-04-26 2018-10-26 Metring Res Srl Sistema Elettronico di Misura del Livello Equivalente di Pressione Sonora con Autodeterminazione in tempo Reale del Tempo di Misura ed Autovalutazione dell'Incertezza di Misura
US10957209B2 (en) * 2018-09-25 2021-03-23 Intel Corporation Methods and apparatus for preventing collisions between drones based on drone-to-drone acoustic communications

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2671134A (en) * 1949-03-22 1954-03-02 Hermon Hosmer Scott Inc Electric and electronic instruments and method of assembly
US3747703A (en) * 1971-01-18 1973-07-24 Minnesota Mining & Mfg Noise exposure computer and method
US3868857A (en) * 1972-11-16 1975-03-04 Teledyne Inc Audio dosimeter
US3848471A (en) * 1973-04-23 1974-11-19 Gen Motors Corp Noise pollution level measuring circuit

Also Published As

Publication number Publication date
FR2312765B1 (enExample) 1979-05-11
DE2619764C3 (de) 1978-09-14
CA1036264A (en) 1978-08-08
FR2312765A1 (fr) 1976-12-24
DE2619764A1 (de) 1976-12-09
US3968697A (en) 1976-07-13
DE2619764B2 (de) 1978-01-05

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee