GB2104218B - Detecting harmonically-rich acoustic sources - Google Patents

Detecting harmonically-rich acoustic sources

Info

Publication number
GB2104218B
GB2104218B GB08123047A GB8123047A GB2104218B GB 2104218 B GB2104218 B GB 2104218B GB 08123047 A GB08123047 A GB 08123047A GB 8123047 A GB8123047 A GB 8123047A GB 2104218 B GB2104218 B GB 2104218B
Authority
GB
United Kingdom
Prior art keywords
harmonically
detecting
acoustic sources
rich acoustic
rich
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
GB08123047A
Other versions
GB2104218A (en
Inventor
Paul Richard Willan
Michael John Greenwood
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.)
Ferranti International PLC
Original Assignee
Ferranti PLC
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 Ferranti PLC filed Critical Ferranti PLC
Priority to GB08123047A priority Critical patent/GB2104218B/en
Publication of GB2104218A publication Critical patent/GB2104218A/en
Application granted granted Critical
Publication of GB2104218B publication Critical patent/GB2104218B/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
    • G01V1/001—Acoustic presence detection
    • 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
    • G01H3/12—Amplitude; Power by electric means
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/18—Methods or devices for transmitting, conducting or directing sound
    • G10K11/26—Sound-focusing or directing, e.g. scanning
    • G10K11/34—Sound-focusing or directing, e.g. scanning using electrical steering of transducer arrays, e.g. beam steering
    • G10K11/341—Circuits therefor
    • G10K11/346—Circuits therefor using phase variation

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Geology (AREA)
  • Remote Sensing (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geophysics (AREA)
  • Multimedia (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
GB08123047A 1981-07-28 1981-07-28 Detecting harmonically-rich acoustic sources Expired GB2104218B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB08123047A GB2104218B (en) 1981-07-28 1981-07-28 Detecting harmonically-rich acoustic sources

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB08123047A GB2104218B (en) 1981-07-28 1981-07-28 Detecting harmonically-rich acoustic sources

Publications (2)

Publication Number Publication Date
GB2104218A GB2104218A (en) 1983-03-02
GB2104218B true GB2104218B (en) 1984-08-30

Family

ID=10523525

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08123047A Expired GB2104218B (en) 1981-07-28 1981-07-28 Detecting harmonically-rich acoustic sources

Country Status (1)

Country Link
GB (1) GB2104218B (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59171540A (en) * 1983-03-18 1984-09-28 富士通株式会社 Measurement utilizing spectrum shape
DE3531231A1 (en) * 1985-08-31 1987-03-12 Krupp Gmbh METHOD FOR ARROWING TARGETS
DE3531230A1 (en) * 1985-08-31 1987-03-05 Krupp Gmbh METHOD FOR DETECTING VEHICLES
DE3623521A1 (en) * 1986-07-12 1988-01-21 Krupp Gmbh PASSIVE METHOD FOR ESTIMATING TARGET DATA OF A TARGET EMITTING TIME-CONTINUOUS WATER SOUND SIGNALS
GB2279456B (en) * 1989-07-24 1995-05-24 Marconi Gec Ltd Sonar direction finding
EP0763812B1 (en) * 1990-05-28 2001-06-20 Matsushita Electric Industrial Co., Ltd. Speech signal processing apparatus for detecting a speech signal from a noisy speech signal
WO2002061726A1 (en) * 2001-01-29 2002-08-08 Algosoft Solutions Limited Sensor array processing
US7068796B2 (en) 2001-07-31 2006-06-27 Moorer James A Ultra-directional microphones
US7180442B1 (en) * 2006-05-03 2007-02-20 The United States Of America As Represented By The Secretary Of The Navy Target indentification method using cepstral coefficients
US7957225B2 (en) * 2007-12-21 2011-06-07 Textron Systems Corporation Alerting system for a facility

Also Published As

Publication number Publication date
GB2104218A (en) 1983-03-02

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Legal Events

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