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GB2339471B - Acoustic signal analyser - Google Patents

Acoustic signal analyser

Info

Publication number
GB2339471B
GB2339471B GB8712873A GB8712873A GB2339471B GB 2339471 B GB2339471 B GB 2339471B GB 8712873 A GB8712873 A GB 8712873A GB 8712873 A GB8712873 A GB 8712873A GB 2339471 B GB2339471 B GB 2339471B
Authority
GB
United Kingdom
Prior art keywords
acoustic signal
signal analyser
analyser
acoustic
signal
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
GB8712873A
Other versions
GB2339471A (en
GB8712873D0 (en
Inventor
Derek Flynn
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.)
UK Secretary of State for Defence
Original Assignee
UK Secretary of State for Defence
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 UK Secretary of State for Defence filed Critical UK Secretary of State for Defence
Publication of GB8712873D0 publication Critical patent/GB8712873D0/en
Publication of GB2339471A publication Critical patent/GB2339471A/en
Application granted granted Critical
Publication of GB2339471B publication Critical patent/GB2339471B/en
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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
GB8712873A 1986-06-05 1987-06-02 Acoustic signal analyser Expired - Fee Related GB2339471B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GBGB8613648.8A GB8613648D0 (en) 1986-06-05 1986-06-05 Improvements in signal processing systems

Publications (3)

Publication Number Publication Date
GB8712873D0 GB8712873D0 (en) 1999-11-24
GB2339471A GB2339471A (en) 2000-01-26
GB2339471B true GB2339471B (en) 2000-05-10

Family

ID=10598970

Family Applications (2)

Application Number Title Priority Date Filing Date
GBGB8613648.8A Ceased GB8613648D0 (en) 1986-06-05 1986-06-05 Improvements in signal processing systems
GB8712873A Expired - Fee Related GB2339471B (en) 1986-06-05 1987-06-02 Acoustic signal analyser

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GBGB8613648.8A Ceased GB8613648D0 (en) 1986-06-05 1986-06-05 Improvements in signal processing systems

Country Status (1)

Country Link
GB (2) GB8613648D0 (en)

Also Published As

Publication number Publication date
GB8613648D0 (en) 1999-11-17
GB2339471A (en) 2000-01-26
GB8712873D0 (en) 1999-11-24

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Legal Events

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

Effective date: 20060602