GB719969A - Improvements in sound transducers - Google Patents

Improvements in sound transducers

Info

Publication number
GB719969A
GB719969A GB15509/52A GB1550952A GB719969A GB 719969 A GB719969 A GB 719969A GB 15509/52 A GB15509/52 A GB 15509/52A GB 1550952 A GB1550952 A GB 1550952A GB 719969 A GB719969 A GB 719969A
Authority
GB
United Kingdom
Prior art keywords
diaphragm
reflector
ellipsoid
resonator
soc
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
GB15509/52A
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.)
ELIPSON SOC
Original Assignee
ELIPSON SOC
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 ELIPSON SOC filed Critical ELIPSON SOC
Publication of GB719969A publication Critical patent/GB719969A/en
Expired legal-status Critical Current

Links

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
    • G10K11/26—Sound-focusing or directing, e.g. scanning
    • G10K11/28—Sound-focusing or directing, e.g. scanning using reflection, e.g. parabolic reflectors
    • 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
    • H04R1/34—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
    • H04R1/345—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 for loudspeakers

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
  • Transducers For Ultrasonic Waves (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)

Abstract

719,969. Sound magnifying and directing appliances. SOC. ELIPSON, [formerly MULTIMOTEUR SOC. ANON]. June 19, 1952. [June 21, 1951], No. 15509/52. Addition to 690,889. Class 13. In a diaphragm loudspeaker having a reflector 2, Fig. 1, in the form of a portion of an ellipsoid of revolution, the centre of the diaphragm 1 is at one form A of the ellipsoid, the axis AB of the sound beam from the diaphragm 1 makes an angle of greater than 90 degrees with the axis BA<SP>1</SP> of the reflected beam and the outlet aperture of the reflector outsid of which is located the other focus A' of the ellipsoid extends to within close proximity of the diaphragm 1. A baffle 3 perpendicular to the reflected beam may be provided. The reflector 2 and diaphragm 1 may be backed by a resonator 4, Fig. 3, having an outlet 5, the resonator being tuned to the natural frequency of the loudspeaker.
GB15509/52A 1950-01-31 1952-06-19 Improvements in sound transducers Expired GB719969A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR290349X 1950-01-31

Publications (1)

Publication Number Publication Date
GB719969A true GB719969A (en) 1954-12-08

Family

ID=8887650

Family Applications (2)

Application Number Title Priority Date Filing Date
GB1774/51A Expired GB690889A (en) 1950-01-31 1951-01-23 Improvements in sound transmitting devices
GB15509/52A Expired GB719969A (en) 1950-01-31 1952-06-19 Improvements in sound transducers

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB1774/51A Expired GB690889A (en) 1950-01-31 1951-01-23 Improvements in sound transmitting devices

Country Status (6)

Country Link
US (1) US2732907A (en)
CH (1) CH290349A (en)
DE (1) DE940357C (en)
FR (2) FR1012676A (en)
GB (2) GB690889A (en)
NL (1) NL84969C (en)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1126928B (en) * 1959-11-20 1962-04-05 August Wilhelm Johan Va Albert Device for emitting sound waves
US3068955A (en) * 1959-11-27 1962-12-18 Albert A W J Van Hedel Device for the radiation of sound waves
US3234501A (en) * 1962-05-07 1966-02-08 Gen Signal Corp Protective casing for ultrasonic transducers
US4357490A (en) * 1980-07-18 1982-11-02 Dickey Baron C High fidelity loudspeaker system for aurally simulating wide frequency range point source of sound
US4564841A (en) * 1981-01-15 1986-01-14 Neidell Norman S Navigational systems using phase encoded angular coordinates
US4421200A (en) * 1981-12-16 1983-12-20 Ferralli Michael W Elliptically shaped transducer enclosure
US4997056A (en) * 1989-01-31 1991-03-05 Riley Michael D Ear-focused acoustic reflector
US5615176A (en) * 1995-12-20 1997-03-25 Lacarrubba; Emanuel Acoustic reflector
US6068080A (en) * 1998-04-13 2000-05-30 Lacarrubba; Emanuel Apparatus for the redistribution of acoustic energy
US6820718B2 (en) * 2002-10-04 2004-11-23 Lacarrubba Emanuel Acoustic reproduction device with improved directional characteristics
US20080123884A1 (en) * 2006-08-22 2008-05-29 David Donenfeld Passive hearing aid device
JP2010268018A (en) * 2009-05-12 2010-11-25 Sony Corp Speaker apparatus, and electronic apparatus
CN103650532B (en) * 2011-07-15 2017-07-04 Kpo创新公司 Using two transducers and the reflector with non-flat forms profile audio signal generator
WO2014144968A1 (en) 2013-03-15 2014-09-18 O'polka Richard Portable sound system
US10149058B2 (en) 2013-03-15 2018-12-04 Richard O'Polka Portable sound system
USD740784S1 (en) 2014-03-14 2015-10-13 Richard O'Polka Portable sound device
JPWO2021111735A1 (en) * 2019-12-04 2021-06-10
USD958119S1 (en) * 2021-08-17 2022-07-19 Shenzhen Xunweijia Technology Development Co., Ltd. Microphone stand

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1619981A (en) * 1923-03-14 1927-03-08 Sargeant P Knut Sound magnifier
US1786279A (en) * 1927-03-31 1930-12-23 Rca Corp Reflector
FR41374E (en) * 1931-08-17 1933-01-07 Improvements to sound amplifiers
US2005300A (en) * 1933-12-15 1935-06-18 Arthur M Pfalzer Baffle for loud speakers
US2239170A (en) * 1939-04-26 1941-04-22 Crosley Corp Radio apparatus
US2643727A (en) * 1950-01-31 1953-06-30 Elipson S A Sound transmitting device with an ellipsoidal reflector

Also Published As

Publication number Publication date
FR1012676A (en) 1952-07-16
GB690889A (en) 1953-04-29
FR61796E (en) 1955-05-17
NL84969C (en)
US2732907A (en) 1956-01-31
CH290349A (en) 1953-04-30
DE940357C (en) 1956-03-15

Similar Documents

Publication Publication Date Title
GB719969A (en) Improvements in sound transducers
GB670868A (en) A filter for sound vibrations and a microphone and telephone provided therewith
GB337264A (en) Improvements relating to acoustic instruments
GB310759A (en) Improvements relating to electro-magnetic acoustic devices
GB698695A (en) Improvements in or relating to microphones
GB503853A (en) Improvements in or relating to microphones
GB600101A (en) Improvements in or relating to electromagnetic horns
CH253344A (en) Device producing harmonic frequencies of a fundamental frequency.
GB641668A (en) Sound reproduction devices
GB292757A (en) Improvements relating to motor and similar horns
GB461106A (en) Improvements in and relating to means for directionally projecting sound
GB718530A (en) Improvements in or relating to sound producing instruments
GB469322A (en) Sound locating apparatus
GB580700A (en) Improvements in charge-mixing devices for internal combustion engines
JPS57164695A (en) Speaker
GB487415A (en) Improvements in or connected with sound locators
GB611179A (en) Improvements in and relating to acoustic instruments, such as loud speakers and directional microphones
GB480313A (en) Means for improving the sound emitted by loudspeakers and the like
ES32049U (en) A device for capturing acoustic signals (Machine-translation by Google Translate, not legally binding)
GB303189A (en) Improvements in or relating to acoustic instruments
GB371031A (en) Improvements in and relating to the selective transmission of sound waves to microphones
ES162050A1 (en) AN ACOUSTIC TRANSFORMER SYSTEM, TO CONVERT MECHANICAL VIBRATIONS INTO SOUND WAVES
ES30545U (en) An improved harmonic model (Machine-translation by Google Translate, not legally binding)
JPS5277701A (en) Headphone
GB737467A (en) Improvements in high power generators of sound and ultra-sound waves