ES470658A1 - Dispositivo transductor electro-acustico reversible - Google Patents
Dispositivo transductor electro-acustico reversibleInfo
- Publication number
- ES470658A1 ES470658A1 ES470658A ES470658A ES470658A1 ES 470658 A1 ES470658 A1 ES 470658A1 ES 470658 A ES470658 A ES 470658A ES 470658 A ES470658 A ES 470658A ES 470658 A1 ES470658 A1 ES 470658A1
- Authority
- ES
- Spain
- Prior art keywords
- frequency band
- wide frequency
- electroacoustic transducer
- transducer device
- directivity characteristic
- 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
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; 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
- H04R1/40—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers
- H04R1/406—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers microphones
-
- 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
- G10K11/28—Sound-focusing or directing, e.g. scanning using reflection, e.g. parabolic reflectors
Landscapes
- Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Transducers For Ultrasonic Waves (AREA)
- Piezo-Electric Transducers For Audible Bands (AREA)
Abstract
Dispositivo transductor electro-acústico reversible con características de directividad constante en una amplia banda de frecuencias susceptible de rebasar un octavo y que forma una antena acústica omnidirectiva, que funciona con una anchura angular idéntica del haz en los sectores que subdividen el horizonte, caracterizado porque incluye un solo transductor electro-acústico omnidireccional combinado con un conjunto de superficies reflectantes de impedancia acústica nula, delimitando dicho conjunto de superficie un espacio en forma de diedro, de triedro, de pirámide o de cono, y porque las distancias de dicho transductor a dichas superficies reflectantes se eligen de valor inferior a 0,4 veces la menor longitud de la onda de dicha banda de frecuencias.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7717861A FR2394221A1 (fr) | 1977-06-10 | 1977-06-10 | Dispositif transducteur electro-acoustique reversible a caracteristique de directivite constante dans une large bande de frequences |
Publications (1)
Publication Number | Publication Date |
---|---|
ES470658A1 true ES470658A1 (es) | 1979-02-16 |
Family
ID=9191964
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES470658A Expired ES470658A1 (es) | 1977-06-10 | 1978-06-09 | Dispositivo transductor electro-acustico reversible |
Country Status (7)
Country | Link |
---|---|
US (1) | US4314098A (es) |
DE (1) | DE2825396A1 (es) |
ES (1) | ES470658A1 (es) |
FR (1) | FR2394221A1 (es) |
GB (1) | GB2001505B (es) |
IT (1) | IT1105361B (es) |
NL (1) | NL7806190A (es) |
Families Citing this family (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2101449B (en) * | 1981-06-17 | 1985-03-20 | Rolls Royce | Microphone device for noise measurement |
US4460061A (en) * | 1982-08-30 | 1984-07-17 | Pennwalt Corporation | Apparatus for increasing directivity of a sound source |
JPS5957596A (ja) * | 1982-09-27 | 1984-04-03 | Sony Corp | マイクロホン装置 |
GB2157128B (en) * | 1984-03-27 | 1987-10-14 | Sony Corp | Microphone apparatus |
US4653606A (en) * | 1985-03-22 | 1987-03-31 | American Telephone And Telegraph Company | Electroacoustic device with broad frequency range directional response |
DE3926884A1 (de) * | 1989-08-16 | 1991-02-21 | Neumann Gmbh Georg | Elektroakustischer wandler |
US5103927A (en) * | 1990-08-07 | 1992-04-14 | Heavener James D | Variable pattern, collapsible, directional transducer |
US5627901A (en) * | 1993-06-23 | 1997-05-06 | Apple Computer, Inc. | Directional microphone for computer visual display monitor and method for construction |
DE19612503C2 (de) * | 1996-03-29 | 1998-01-29 | Stn Atlas Elektronik Gmbh | Elektroakustischer Wandlermodul |
AU2002243224A1 (en) * | 2000-11-16 | 2002-06-24 | The Trustees Of The Stevens Institute Of Technology | Large aperture vibration and acoustic sensor |
NL1029681C2 (nl) * | 2005-08-04 | 2007-02-06 | Theodorus Bernardus J Campmans | Veiligheidstoestel en werkwijze voor het afgeven van een gericht akoestisch alarmsignaal. |
US20080007142A1 (en) * | 2006-06-23 | 2008-01-10 | Minoru Toda | Ultrasonic transducer assembly having a vibrating member and at least one reflector |
NO333056B1 (no) * | 2009-01-21 | 2013-02-25 | Cisco Systems Int Sarl | Direktiv mikrofon |
ITTO20090501A1 (it) * | 2009-07-01 | 2011-01-02 | Dipartimento Di Biolog Animale Ed Ecologia Cent | Dispositivo ad elevata direttivita' per la riproduzione acustica di suoni |
JP2012147137A (ja) * | 2011-01-07 | 2012-08-02 | Jvc Kenwood Corp | 収音装置 |
FR3007926B1 (fr) | 2013-06-27 | 2016-01-08 | Areva Np | Transducteur a ultrasons |
USD823825S1 (en) * | 2017-02-23 | 2018-07-24 | Abel Flores | Microphone speaking shield |
US11397263B2 (en) * | 2019-11-05 | 2022-07-26 | Navico Holding As | Sonar system with acoustic beam reflector |
USD905022S1 (en) * | 2020-07-22 | 2020-12-15 | Crown Tech Llc | Microphone isolation shield |
USD910604S1 (en) * | 2020-07-22 | 2021-02-16 | Crown Tech Llc | Microphone isolation shield |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2544536A (en) * | 1947-05-28 | 1951-03-06 | Rca Corp | Microphone |
FR1052541A (fr) * | 1952-03-18 | 1954-01-25 | Appareil de prise de son | |
US2922140A (en) * | 1954-06-25 | 1960-01-19 | Edo Corp | Selectively directive compressional wave transducers |
DE1207242B (de) * | 1961-04-22 | 1965-12-16 | Atlas Werke Ag | Elektroakustischer Wandler, insbesondere fuer die Echolottechnik |
US3243768A (en) * | 1962-06-01 | 1966-03-29 | Jr Arthur H Roshon | Integral directional electroacoustical transducer for simultaneous transmission and reception of sound |
US3302163A (en) * | 1965-08-31 | 1967-01-31 | Jr Daniel E Andrews | Broad band acoustic transducer |
US3325779A (en) * | 1965-09-13 | 1967-06-13 | Westinghouse Electric Corp | Transducer |
US3502811A (en) * | 1967-12-11 | 1970-03-24 | Bell Telephone Labor Inc | Directional microphone with frequency independent beamwidth |
DE1815684A1 (de) * | 1968-12-19 | 1970-06-25 | Krupp Gmbh | Reflektor fuer Wasserschall |
CA1027669A (en) * | 1974-05-20 | 1978-03-07 | Ralph W. Goble | Piezoelectric transducer assembly and method for generating a cone shaped radiation pattern |
-
1977
- 1977-06-10 FR FR7717861A patent/FR2394221A1/fr active Granted
-
1978
- 1978-06-07 NL NL7806190A patent/NL7806190A/xx not_active Application Discontinuation
- 1978-06-07 GB GB787826482A patent/GB2001505B/en not_active Expired
- 1978-06-09 IT IT49792/78A patent/IT1105361B/it active
- 1978-06-09 ES ES470658A patent/ES470658A1/es not_active Expired
- 1978-06-09 DE DE19782825396 patent/DE2825396A1/de not_active Ceased
-
1979
- 1979-11-02 US US06/090,671 patent/US4314098A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
GB2001505B (en) | 1982-05-19 |
US4314098A (en) | 1982-02-02 |
IT1105361B (it) | 1985-10-28 |
FR2394221B1 (es) | 1981-12-11 |
FR2394221A1 (fr) | 1979-01-05 |
GB2001505A (en) | 1979-01-31 |
DE2825396A1 (de) | 1978-12-21 |
NL7806190A (nl) | 1978-12-12 |
IT7849792A0 (it) | 1978-06-09 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
FD1A | Patent lapsed |
Effective date: 19971103 |