EP1347439A3 - Method and device for converting unipolar acoustic pulses into bipolar pulses - Google Patents

Method and device for converting unipolar acoustic pulses into bipolar pulses Download PDF

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Publication number
EP1347439A3
EP1347439A3 EP03006141.0A EP03006141A EP1347439A3 EP 1347439 A3 EP1347439 A3 EP 1347439A3 EP 03006141 A EP03006141 A EP 03006141A EP 1347439 A3 EP1347439 A3 EP 1347439A3
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EP
European Patent Office
Prior art keywords
pulses
acoustic
bipolar
medium
converting
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.)
Withdrawn
Application number
EP03006141.0A
Other languages
German (de)
French (fr)
Other versions
EP1347439A2 (en
Inventor
Harald Eizenhöfer
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.)
Dornier Medtech Systems GmbH
Original Assignee
Dornier Medtech Systems GmbH
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 Dornier Medtech Systems GmbH filed Critical Dornier Medtech Systems GmbH
Publication of EP1347439A2 publication Critical patent/EP1347439A2/en
Publication of EP1347439A3 publication Critical patent/EP1347439A3/en
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • G10K11/20—Reflecting arrangements
    • G10K11/205—Reflecting arrangements for underwater use
    • 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
    • G10K15/00—Acoustics not otherwise provided for
    • G10K15/02—Synthesis of acoustic waves
    • 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
    • G10K15/00—Acoustics not otherwise provided for
    • G10K15/04—Sound-producing devices

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • General Health & Medical Sciences (AREA)
  • Surgical Instruments (AREA)
  • Transducers For Ultrasonic Waves (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)

Abstract

Die Erfindung bezieht sich auf ein Verfahren und auf eine Einrichtung zur Wandlung der unipolaren, von einer geeigneten Stoßwellenquelle erzeugten akustischen Impulse bzw. Stoßwellen in bipolare akustische Impulse bzw. Stoßwellen zur Erzeugung inverser N-Wellen.The invention relates to a method and to a device for converting the unipolar acoustic pulses or shock waves generated by a suitable shock wave source into bipolar acoustic pulses or shock waves for generating inverse N waves.

Erfindungsgemäß werden die unipolaren Impulse an einem Grenzschicht-Medium aus einem Werkstoff reflektiert, dessen Dicke deutlich geringer ist als die Signallänge des akustischen Impulses in dem Grenzschicht-Medium, und dessen akustische Impedanz deutlich verschieden ist sowohl von der Impedanz des Ausbreitungsmediums als auch von derjenigen des dahinter angrenzenden Mediums.

Figure imgaf001
According to the invention, the unipolar pulses are reflected at a boundary layer medium of a material whose thickness is significantly less than the signal length of the acoustic pulse in the boundary layer medium, and whose acoustic impedance is significantly different from both the impedance of the propagation medium and that of behind it adjacent medium.
Figure imgaf001
EP03006141.0A 2002-03-18 2003-03-18 Method and device for converting unipolar acoustic pulses into bipolar pulses Withdrawn EP1347439A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10211886 2002-03-18
DE10211886A DE10211886B4 (en) 2002-03-18 2002-03-18 Method and device for generating bipolar acoustic pulses

Publications (2)

Publication Number Publication Date
EP1347439A2 EP1347439A2 (en) 2003-09-24
EP1347439A3 true EP1347439A3 (en) 2016-10-12

Family

ID=27771402

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03006141.0A Withdrawn EP1347439A3 (en) 2002-03-18 2003-03-18 Method and device for converting unipolar acoustic pulses into bipolar pulses

Country Status (3)

Country Link
US (1) US20030220592A1 (en)
EP (1) EP1347439A3 (en)
DE (1) DE10211886B4 (en)

Citations (4)

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US5099457A (en) * 1989-12-29 1992-03-24 Thomson-Csf Acoustic wave reflector capable of working under deep submersion

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Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD7108A (en) *
US3656012A (en) * 1971-02-02 1972-04-11 Atomic Energy Commission Method of generating unipolar and bipolar pulses
DE2502818A1 (en) * 1974-02-04 1975-08-14 Technicon Instr METHOD AND DEVICE FOR IMPULSE CHO PROCESSING
US5099457A (en) * 1989-12-29 1992-03-24 Thomson-Csf Acoustic wave reflector capable of working under deep submersion

Also Published As

Publication number Publication date
US20030220592A1 (en) 2003-11-27
DE10211886A1 (en) 2003-10-16
EP1347439A2 (en) 2003-09-24
DE10211886B4 (en) 2004-07-15

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