GB968480A - Stereophonic loudspeaker system - Google Patents

Stereophonic loudspeaker system

Info

Publication number
GB968480A
GB968480A GB22690/61A GB2269061A GB968480A GB 968480 A GB968480 A GB 968480A GB 22690/61 A GB22690/61 A GB 22690/61A GB 2269061 A GB2269061 A GB 2269061A GB 968480 A GB968480 A GB 968480A
Authority
GB
United Kingdom
Prior art keywords
loud
cabinet
side wall
partitions
stereophonic
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
GB22690/61A
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.)
RCA Corp
Original Assignee
RCA Corp
Radio Corporation of America
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 RCA Corp, Radio Corporation of America filed Critical RCA Corp
Publication of GB968480A publication Critical patent/GB968480A/en
Expired legal-status Critical Current

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
    • H04R1/34—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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R5/00—Stereophonic arrangements
    • H04R5/02—Spatial or constructional arrangements of loudspeakers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2205/00—Details of stereophonic arrangements covered by H04R5/00 but not provided for in any of its subgroups
    • H04R2205/022—Plurality of transducers corresponding to a plurality of sound channels in each earpiece of headphones or in a single enclosure

Landscapes

  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)

Abstract

968,480. Stereophonic loud-speaker systems. RADIO CORPORATION OF AMERICA. June 22, 1961 [July 15, 1960], No. 22690/61. Headings H4J, H4R and H4X. A stereophonic loud-speaker system comprises a cabinet having a front, a rear and two side walls, a sound conducting opening in each side wall, a diaphragm loud - speaker mounted in each side portion with its diaphragm angularly facing toward the adjacent opening in the associated side wall and sound directing waveguides mounted in the side portions of the cabinet and acoustically connecting the diaphragm of each loudspeaker with the adjacent opening in the side wall. The waveguides each consist of a plurality of vertical partitions positioned in spaced relation to each other. A rectangular cabinet 5 (Fig. 1) has side chambers 9, 10 in which are mounted loud-speakers 7, 8 each with its axis of radiation 16 (Fig. 4) at an acute angle to the adjacent side wall. The chambers 9, 10 are separated by partitions 11 and a central chamber 6 houses a stereophonic F.M. or A.M. radio receiver 45 and two amplifiers 48, 49. The loud-speakers 7, 8 are of the moving coil type and are mounted on baffle boards 37. The waveguides are defined by vertical and parallel partitions 27 to 33 which provide ducts which are less than one wavelength across at the highest useful frequency of transmission. The partitions may be curved or variously shaped and angled, provided the various path lengths from the plane of the baffle board to a forward listening point 0 are the same for all ducts. The virtual sound sources 22, 23 are outside the cabinet.
GB22690/61A 1960-07-15 1961-06-22 Stereophonic loudspeaker system Expired GB968480A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US43040A US3105113A (en) 1960-07-15 1960-07-15 Stereophonic loudspeaker system

Publications (1)

Publication Number Publication Date
GB968480A true GB968480A (en) 1964-09-02

Family

ID=21925133

Family Applications (1)

Application Number Title Priority Date Filing Date
GB22690/61A Expired GB968480A (en) 1960-07-15 1961-06-22 Stereophonic loudspeaker system

Country Status (4)

Country Link
US (1) US3105113A (en)
DE (1) DE1159028B (en)
GB (1) GB968480A (en)
NL (1) NL267133A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6533063B1 (en) 1999-07-06 2003-03-18 Matsushita Electric Industrial Co., Ltd. Video equipment speaker device with acoustic lens

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1368070A (en) * 1971-12-13 1974-09-25 Borisenko A V Sterophonic sound-reproducing system
DE2908349A1 (en) * 1979-03-03 1980-09-04 Braun Ag STEREO COMPACT DEVICE
JP2651383B2 (en) * 1989-03-14 1997-09-10 パイオニア株式会社 Speaker device with directivity
ITBS20020063A1 (en) * 2002-07-09 2004-01-09 Outline Di Noselli G & S N C SINGLE AND MULTIPLE REFLECTION WAVE GUIDE
US7483543B2 (en) * 2003-01-06 2009-01-27 Motorola, Inc. Stereo imaging manifold and method for use in a portable electronic device
GB2425436B (en) * 2005-04-21 2007-06-06 Martin Audio Ltd Acoustic loading device for loudspeakers
US10609473B2 (en) 2014-09-30 2020-03-31 Apple Inc. Audio driver and power supply unit architecture
USRE49437E1 (en) 2014-09-30 2023-02-28 Apple Inc. Audio driver and power supply unit architecture
KR101987237B1 (en) 2014-09-30 2019-06-10 애플 인크. Loudspeaker
US10631071B2 (en) 2016-09-23 2020-04-21 Apple Inc. Cantilevered foot for electronic device
CN109769181B (en) * 2019-01-28 2020-08-25 努比亚技术有限公司 Loudspeaker sound outlet hole, terminal and loudspeaker sound outlet hole control method
EP4324220A1 (en) * 2021-04-14 2024-02-21 Dolby Laboratories Licensing Corporation Narrow aperture waveguide loudspeaker for use with flat panel display devices

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2102212A (en) * 1935-09-30 1937-12-14 Rca Corp Sound reproducing apparatus
US2002390A (en) * 1932-08-15 1935-05-21 Crosley Radio Corp Acoustic device
US2145318A (en) * 1936-07-14 1939-01-31 Telefunken Gmbh Loudspeaker arrangement
BE430974A (en) * 1937-11-10
US2272937A (en) * 1941-06-11 1942-02-10 Zenith Radio Corp Radio receiving apparatus
US2463762A (en) * 1941-11-14 1949-03-08 Automatic Elect Lab Electroacoustical transducer
FR868717A (en) * 1943-10-07 1942-01-14 Anti-swirl speaker
US2580439A (en) * 1949-09-07 1952-01-01 Bell Telephone Labor Inc Directional acoustic system
DE1683212U (en) * 1954-01-23 1954-09-16 Blaupunkt Werke Gmbh RADIO OR TV WITH SPATIAL SOUND REPRODUCTION.
US2750245A (en) * 1954-02-08 1956-06-12 B & M Mills Inc Panel for radio or television cabinet
DE943598C (en) * 1954-02-21 1956-05-24 Max Grundig Radio or news equipment with sound reproduction that appears spacious

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6533063B1 (en) 1999-07-06 2003-03-18 Matsushita Electric Industrial Co., Ltd. Video equipment speaker device with acoustic lens

Also Published As

Publication number Publication date
US3105113A (en) 1963-09-24
DE1159028B (en) 1963-12-12
NL267133A (en)

Similar Documents

Publication Publication Date Title
GB1253044A (en)
GB968480A (en) Stereophonic loudspeaker system
US4051919A (en) High fidelity speaker enclosure
SE7600772L (en) SPEAKERS, SPECIAL FOR PLACING ON THE BOOK SHELF
TW200603651A (en) Speaker system, and speaker cluster system
SE8107050L (en) SPEAKER WITH WALL REFLEX ABSORBENT
NO834701L (en) STEREOPHONIC AUDIO CABINET
ES8305173A1 (en) Television receiver for stereophonic sound reproduction
EP0705053A2 (en) Headphone for surround sound effect
GB1102036A (en) Acoustic system
US6782111B1 (en) Multiple voicecoil and driver transducing
GB1070186A (en) Loudspeaker enclosure
GB988456A (en) Loudspeaker housing
GB1147810A (en) Loud speaker assembly
GB1088756A (en) Improvements in or relating to loudspeaker horns
ES456320A1 (en) Speaker unit
JPS5632898A (en) Sterophonic speaker unit
GB912430A (en) Improvements in or relating to loud speakers
GB1259512A (en)
GB641668A (en) Sound reproduction devices
GB829214A (en) Improvements in loud speaker systems
GB1420714A (en) Multiloudspeaker assemblies for stereophonic sound reproduction
GB1500199A (en) Direct radiator loudspeaker systems
GB319408A (en) Improvements in or relating to sound reproducing devices
FR2338616A1 (en) High fidelity loudspeaker system - has coaxial loudspeakers acoustically in-phase and in common enclosure