FR45642E - Improvements in sound transmission, recording and reproduction devices - Google Patents

Improvements in sound transmission, recording and reproduction devices

Info

Publication number
FR45642E
FR45642E FR45642DA FR45642E FR 45642 E FR45642 E FR 45642E FR 45642D A FR45642D A FR 45642DA FR 45642 E FR45642 E FR 45642E
Authority
FR
France
Prior art keywords
recording
sound transmission
reproduction devices
reproduction
devices
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
Other languages
French (fr)
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.)
Electrical and Musical Industries Ltd
Original Assignee
Electrical and Musical Industries 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 GB3465731A external-priority patent/GB394325A/en
Priority claimed from GB450134A external-priority patent/GB429054A/en
Application filed by Electrical and Musical Industries Ltd filed Critical Electrical and Musical Industries Ltd
Application granted granted Critical
Publication of FR45642E publication Critical patent/FR45642E/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
    • H04R5/00—Stereophonic arrangements
    • H04R5/04—Circuit arrangements, e.g. for selective connection of amplifier inputs/outputs to loudspeakers, for loudspeaker detection, or for adaptation of settings to personal preferences or hearing impairments
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R11/00—Transducers of moving-armature or moving-core type
    • H04R11/08—Gramophone pick-ups using a stylus; Recorders using a stylus
    • H04R11/12—Gramophone pick-ups using a stylus; Recorders using a stylus signals being recorded or played back by vibration of a stylus in two orthogonal directions simultaneously
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/12—Gramophone pick-ups using a stylus; Recorders using a stylus
    • H04R9/16—Gramophone pick-ups using a stylus; Recorders using a stylus signals recorded or played back by vibration of a stylus in two orthogonal directions simultaneously
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S1/00—Two-channel systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S1/00—Two-channel systems
    • H04S1/002—Non-adaptive circuits, e.g. manually adjustable or static, for enhancing the sound image or the spatial distribution

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Electromagnetism (AREA)
  • Circuit For Audible Band Transducer (AREA)
  • Stereophonic System (AREA)
FR45642D 1931-12-14 1934-11-06 Improvements in sound transmission, recording and reproduction devices Expired FR45642E (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB3465731A GB394325A (en) 1931-12-14 1931-12-14 Improvements in and relating to sound-transmission, sound-recording and sound-reproducing systems
GB450134A GB429054A (en) 1934-02-10 1934-02-10 Improvements in and relating to sound-transmission, sound-recording and sound-reproducing systems

Publications (1)

Publication Number Publication Date
FR45642E true FR45642E (en) 1935-11-02

Family

ID=31995661

Family Applications (3)

Application Number Title Priority Date Filing Date
FR747504D Expired FR747504A (en) 1931-12-14
FR45547D Expired FR45547E (en) 1931-12-14 1934-10-23 Improvements in sound transmission, recording and reproduction devices
FR45642D Expired FR45642E (en) 1931-12-14 1934-11-06 Improvements in sound transmission, recording and reproduction devices

Family Applications Before (2)

Application Number Title Priority Date Filing Date
FR747504D Expired FR747504A (en) 1931-12-14
FR45547D Expired FR45547E (en) 1931-12-14 1934-10-23 Improvements in sound transmission, recording and reproduction devices

Country Status (2)

Country Link
US (2) US2093540A (en)
FR (3) FR45547E (en)

Families Citing this family (48)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE744615C (en) * 1941-03-07 1944-01-21 Philips Nv Microphone for noisy surroundings
US2498772A (en) * 1941-05-15 1950-02-28 Bendix Aviat Corp Aerial torpedo
US2481911A (en) * 1942-05-20 1949-09-13 Hartford Nat Bank & Trust Co Device for adjusting the stereophonic effect in devices for stereophonic transmission
US2505585A (en) * 1944-12-23 1950-04-25 Us Sec War Electroacoustic binaural listening system
US2616970A (en) * 1948-02-11 1952-11-04 Hartford Nat Bank & Trust Co Device for the transmission by electrical means of oscillations of acoustic frequency
US2710662A (en) * 1948-12-23 1955-06-14 Armour Res Found Sound projection system
US2836662A (en) * 1954-08-18 1958-05-27 Emi Ltd Electrical sound transmission systems
NL106407C (en) * 1956-08-31 1963-10-02
US3053943A (en) * 1957-07-12 1962-09-11 Columbia Broadcasting Syst Inc Phonograph record cutter
US3055989A (en) * 1957-08-12 1962-09-25 Columbia Broadcasting Syst Inc Ceramic reproducer
NL104447C (en) * 1957-10-29
NL106582C (en) * 1957-10-30
US2958738A (en) * 1958-01-06 1960-11-01 Erie Resistor Corp Compensating network for binaural pickup
US3067292A (en) * 1958-02-03 1962-12-04 Jerry B Minter Stereophonic sound transmission and reproduction
US3309469A (en) * 1958-02-27 1967-03-14 Rca Corp Phonograph pickup
US3118978A (en) * 1958-02-27 1964-01-21 Gen Electric Magnetic stereophonic phonograph cartridge
NL236717A (en) * 1958-03-03
DE1138560B (en) * 1958-03-05 1962-10-25 Fonofilm Ind As Cutting box for recording two signals in a groove of a sound carrier
US3225146A (en) * 1958-03-14 1965-12-21 Rca Corp Stereophonic phonograph system
US3155779A (en) * 1958-03-31 1964-11-03 Rca Corp Stereophonic phonograph system
US3026378A (en) * 1958-04-30 1962-03-20 Rca Corp Stereophonic audio-frequency signal amplifier systems
US3013125A (en) * 1958-05-16 1961-12-12 Columbia Broadcasting Syst Inc Stereophonic recording
NL228905A (en) * 1958-06-20
US3067295A (en) * 1958-08-04 1962-12-04 Pickering & Co Inc Stereophonic phonograph pick-up device
US3047666A (en) * 1958-10-27 1962-07-31 Murray G Crosby Compatible stereophonic system
US3215785A (en) * 1958-12-23 1965-11-02 Astatic Corp Stereophonic piezoelectric pickup cartridge
DE1173684B (en) * 1959-01-02 1964-07-09 Philips Nv Transducer for recording or scanning a groove-shaped recording track
US3002105A (en) * 1959-08-20 1961-09-26 Charles A Cady Emergency power supply
US3215786A (en) * 1959-08-21 1965-11-02 Astatic Corp Universal monaural-binaural phonograph pickup cartridge
US3083264A (en) * 1959-12-10 1963-03-26 Bell Telephone Labor Inc Sum and difference stereophonic transmission with negative feedback
DE1121826B (en) * 1960-02-02 1962-01-11 Telefunken Gmbh Mechanical-electrical converter for the generation or scanning of a grooved sound track
US3117186A (en) * 1960-02-17 1964-01-07 Richard W Burden Compatible stereophonic broadcast system
US3086780A (en) * 1960-07-26 1963-04-23 Foster Mallard Ltd Sound reproducing machines
US3261925A (en) * 1960-10-06 1966-07-19 Bernard Smith Lab Inc A Stereophonic photoelectric transducer
NL284585A (en) * 1961-10-23
NL132006C (en) * 1962-08-02
US3297831A (en) * 1964-02-06 1967-01-10 Walter O Stanton Magnetic stereophonic phonograph pickup
US3489864A (en) * 1965-03-08 1970-01-13 Electro Voice Stereo phonograph pickup and turnover mechanism
US3627931A (en) * 1968-01-23 1971-12-14 Nippon Columbia Moving magnet type stereo pickup
GB1445420A (en) * 1973-10-09 1976-08-11 Hungarofilm Vallalat Light exposure valve for recording sterophonic sound track on film
JPS51132803A (en) * 1975-04-17 1976-11-18 Nippon Hoso Kyokai <Nhk> Sound field expander
US4356349A (en) * 1980-03-12 1982-10-26 Trod Nossel Recording Studios, Inc. Acoustic image enhancing method and apparatus
US5850453A (en) 1995-07-28 1998-12-15 Srs Labs, Inc. Acoustic correction apparatus
AU2013400A (en) 1999-11-25 2001-06-04 Embracing Sound Experience Ab A method of processing and reproducing an audio stereo signal, and an audio stereo signal reproduction system
SE527062C2 (en) * 2003-07-21 2005-12-13 Embracing Sound Experience Ab Stereo sound processing method, device and system
US20070237340A1 (en) * 2006-04-10 2007-10-11 Edwin Pfanzagl-Cardone Microphone for Surround-Recording
SE530180C2 (en) * 2006-04-19 2008-03-18 Embracing Sound Experience Ab Speaker Device
US8050434B1 (en) 2006-12-21 2011-11-01 Srs Labs, Inc. Multi-channel audio enhancement system

Also Published As

Publication number Publication date
FR747504A (en) 1933-06-16
US2093540A (en) 1937-09-21
FR45547E (en) 1935-09-12
US2062275A (en) 1936-11-24

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