ES2162984T3 - Sistema para atenuacion de ruido. - Google Patents

Sistema para atenuacion de ruido.

Info

Publication number
ES2162984T3
ES2162984T3 ES96308839T ES96308839T ES2162984T3 ES 2162984 T3 ES2162984 T3 ES 2162984T3 ES 96308839 T ES96308839 T ES 96308839T ES 96308839 T ES96308839 T ES 96308839T ES 2162984 T3 ES2162984 T3 ES 2162984T3
Authority
ES
Spain
Prior art keywords
light
guide
optical microphone
intensity
final
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 - Lifetime
Application number
ES96308839T
Other languages
English (en)
Spanish (es)
Inventor
Alexander Paritsky
Alexander Kots
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.)
Phone Or Ltd
Original Assignee
Phone Or Ltd
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
Priority claimed from IL11627495A external-priority patent/IL116274A0/xx
Application filed by Phone Or Ltd filed Critical Phone Or Ltd
Application granted granted Critical
Publication of ES2162984T3 publication Critical patent/ES2162984T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R3/00—Circuits for transducers
    • H04R3/005—Circuits for transducers for combining the signals of two or more microphones
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/32—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only
    • H04R1/34—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by using a single transducer with sound reflecting, diffracting, directing or guiding means
    • H04R1/38—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by using a single transducer with sound reflecting, diffracting, directing or guiding means in which sound waves act upon both sides of a diaphragm and incorporating acoustic phase-shifting means, e.g. pressure-gradient microphone
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R23/00—Transducers other than those covered by groups H04R9/00 - H04R21/00
    • H04R23/008—Transducers other than those covered by groups H04R9/00 - H04R21/00 using optical signals for detecting or generating sound
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R2201/00—Details of transducers, loudspeakers or microphones covered by H04R1/00 but not provided for in any of its subgroups
    • H04R2201/40—Details of arrangements for obtaining desired directional characteristic by combining a number of identical transducers covered by H04R1/40 but not provided for in any of its subgroups
    • H04R2201/403—Linear arrays of transducers

Landscapes

  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • General Health & Medical Sciences (AREA)
  • Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
  • Optical Radar Systems And Details Thereof (AREA)
ES96308839T 1995-12-07 1996-12-05 Sistema para atenuacion de ruido. Expired - Lifetime ES2162984T3 (es)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IL11627495A IL116274A0 (en) 1995-12-07 1995-12-07 System and methot for attenuation of noise
EP96201999 1996-07-17

Publications (1)

Publication Number Publication Date
ES2162984T3 true ES2162984T3 (es) 2002-01-16

Family

ID=26142999

Family Applications (1)

Application Number Title Priority Date Filing Date
ES96308839T Expired - Lifetime ES2162984T3 (es) 1995-12-07 1996-12-05 Sistema para atenuacion de ruido.

Country Status (3)

Country Link
EP (1) EP0777404B1 (fr)
DE (1) DE69615129T2 (fr)
ES (1) ES2162984T3 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1213635C (zh) * 1999-12-13 2005-08-03 株式会社建伍 光学声电换能器
IL140066A0 (en) * 2000-12-04 2002-02-10 Phone Or Ltd Optical microphone system and a method for forming same

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2350010A (en) * 1941-12-26 1944-05-30 Glastonbury Bank & Trust Compa Microphone
US3004103A (en) * 1958-12-22 1961-10-10 Chance Vought Corp Noise-reducing microphone assembly
JPS6118916A (ja) * 1984-07-06 1986-01-27 Nec Corp 光マイクロフオン
IL111913A (en) 1994-12-07 1997-07-13 Phone Or Ltd Sensor and a method for measuring distances to, and/or physical properties of, a medium

Also Published As

Publication number Publication date
EP0777404B1 (fr) 2001-09-12
DE69615129T2 (de) 2002-09-05
EP0777404A1 (fr) 1997-06-04
DE69615129D1 (de) 2001-10-18

Similar Documents

Publication Publication Date Title
ATE318434T1 (de) Streulichtrauchmelder
ES2135056T3 (es) Sistema de deteccion.
EP0657975A3 (fr) Laser à semi-conducteur à séléctivité du mode de polarisation, source de lumière et système de communication optique utilisant ce laser.
DE60025221D1 (de) Optisches inspektionssystem für teile im subpixel bereich
DE69733390D1 (de) Beleuchtungseinheit, lichtquellen- und projektionsanzeigevorrichtung
ES2046378T3 (es) Sistema para la deteccion del despegue y vuelo de aproximacion de objetos.
WO2001045981A3 (fr) Systeme optique de signalisation en espace libre
ATE373241T1 (de) Detektor und siebvorrichtung für ionenkanäle
SE9803820D0 (sv) Anordning för åstadkommande av laserhjälplinje
BRPI0517571A (pt) processo de inspeção óptica, dispositivo de iluminação, e, posto de inspeção óptica
EP4523735A4 (fr) Dispositif émetteur de lumière et système émetteur de lumière
TR199901890T1 (xx) Konikoidal bir i� sath� havi pencereli optik sistem.
SE0102332D0 (sv) Anordning vid optiskt system
DE69935477D1 (de) VORRICHTUNG ZUR BESTIMMUNG VON pH, pCO2, HÄMOGLOBIN UND HÄMOGLOBIN-SAUERSTOFFSÄTTIGUNG
FR2814808B1 (fr) Procede de lecture optique de la forme d'un profile et application au releve du bord interieur d'un cercle de monture de lunettes.
ES2162984T3 (es) Sistema para atenuacion de ruido.
ATE408134T1 (de) Optisches analysegerät
FR2793559B1 (fr) Procede et dispositif pour detecter les erreurs d'harmonisation de l'axe d'un instrument optique
FR2703778B1 (fr) Dispositif de mesure optique, notamment par spectrophotométrie.
FR2863686B1 (fr) Feu de signalisation a diodes electroluminescentes
ATE270426T1 (de) Kalibriersystem für eine photovervielfacherröhre
EP4194052A4 (fr) Dispositif et système d'irradiation de lumière
CY1108206T1 (el) Οπτικη μεθοδος και συσκευη για εξεταση εγγραφων
EP0657719A3 (fr) Système de capteur optique multiple.
WO2001002877A3 (fr) Dispositifs d'echantillonnage de la lumiere et systeme de projection les contenant

Legal Events

Date Code Title Description
FG2A Definitive protection

Ref document number: 777404

Country of ref document: ES