GB250221A - - Google Patents

Info

Publication number
GB250221A
GB250221A GB8096/26A GB809626A GB250221A GB 250221 A GB250221 A GB 250221A GB 8096/26 A GB8096/26 A GB 8096/26A GB 809626 A GB809626 A GB 809626A GB 250221 A GB250221 A GB 250221A
Authority
GB
United Kingdom
Prior art keywords
instruments
type
frequencies
amplifiers
instrument
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
GB8096/26A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB250221A publication Critical patent/GB250221A/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
    • H04R3/00—Circuits for transducers, loudspeakers or microphones
    • H04R3/12—Circuits for transducers, loudspeakers or microphones for distributing signals to two or more loudspeakers
    • H04R3/14—Cross-over networks

Landscapes

  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Near-Field Transmission Systems (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)

Abstract

250,221. Hahnemann, W. March 31, 1925, [Convention date]. Systems for transmitting music.-In systems using a number of independent sound transmitting or receiving instruments, each concerned with a particular band of frequencies, either different types of instrument are used, each instrument being specially efficient for its own frequency band, or the instruments are all of one type and are provided with amplifiers to compensate for the differences in efficiency of the type selected at the different frequency bands. These arrangements may be used in combination. Fig. 1 shows a system in which low, medium and high frequencies are dealt with respectively by moving coil, moving magnet and condenser telephones 9, 8, 7, the separation being effected by filters 11, 12, 10. In the arrangement shown in Fig. 3, all the instruments are of the moving coil type which favours the low frequencies and amplifiers V<1> - - V<3> are provided to equalize the effective efficiency of each channel. In a further arrangement all the instruments are of condenser type.
GB8096/26A 1925-03-31 1926-03-24 Expired GB250221A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE250221T 1925-03-31

Publications (1)

Publication Number Publication Date
GB250221A true GB250221A (en) 1927-04-07

Family

ID=31893645

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8096/26A Expired GB250221A (en) 1925-03-31 1926-03-24

Country Status (3)

Country Link
US (1) US1674683A (en)
FR (1) FR613417A (en)
GB (1) GB250221A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2324926A (en) * 1997-05-01 1998-11-04 David Joseph Geiss Cross-over arrangement for a loudspeaker

Families Citing this family (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE467997A (en) * 1945-08-03
US2474191A (en) * 1947-06-06 1949-06-21 Avco Mfg Corp Tone control
US2539327A (en) * 1947-07-23 1951-01-23 Avco Mfg Corp Cabinet for radio apparatus
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
DE973570C (en) * 1948-10-02 1960-03-31 Siemens Ag Device for the plastic reproduction of electroacoustic performances
US2615994A (en) * 1948-12-14 1952-10-28 Lindenberg Theodore Diaphragm for electrostatic loud-speakers
US2745083A (en) * 1949-07-07 1956-05-08 Benjamin L Snavely Transducer, elements therefor, and methods of assembly thereof
US2547464A (en) * 1950-03-03 1951-04-03 Frederick G Hehr Sound recording and reproducing apparatus
US2830283A (en) * 1950-04-18 1958-04-08 Massa Frank Directional characteristics of electroacoustic transducers and method for utilizing the same
US2973504A (en) * 1951-03-26 1961-02-28 Robert J Bobber Sonic echo system
US2978671A (en) * 1951-08-11 1961-04-04 Harris Transducer Corp Electrodynamic transducer
US2888517A (en) * 1953-11-02 1959-05-26 Leo C Krazinski System and apparatus for reproducing and re-recording music
US2978669A (en) * 1954-03-08 1961-04-04 Harris Transducer Corp Underwater electrodynamic acoustic transducer with air-filled composite diaphragm
US3008013A (en) * 1954-07-20 1961-11-07 Ferranti Ltd Electrostatic loudspeakers
US2993090A (en) * 1955-03-16 1961-07-18 Arf Products Electrostatic speaker circuit
US3135838A (en) * 1958-12-10 1964-06-02 Wright St George Lab Inc Electrostatic loudspeaker
US3061676A (en) * 1959-02-05 1962-10-30 Electro Voice Sound reproducing device
US3457370A (en) * 1965-12-30 1969-07-22 C P Boner & Associates Impedance correcting networks
US4597100A (en) * 1984-05-15 1986-06-24 Rg Dynamics, Inc. Ultra high resolution loudspeaker system
US5519781A (en) * 1990-10-05 1996-05-21 Kukurudza; Vladimir W. Self damping speaker matching device and method
US5373563A (en) * 1990-10-05 1994-12-13 Kukurudza; Vladimir W. Self damping speaker matching device
WO1994019915A1 (en) * 1993-02-25 1994-09-01 Heinz Ralph D Multiple-driver single horn loudspeaker
US5615272A (en) * 1995-11-08 1997-03-25 Kukurudza; Vladimir W. Single loud speaker drive system
US5917922A (en) * 1995-11-08 1999-06-29 Kukurudza; Vladimir Walter Method of operating a single loud speaker drive system
US6115475A (en) * 1998-07-23 2000-09-05 Diaural, L.L.C. Capacitor-less crossover network for electro-acoustic loudspeakers
US6411718B1 (en) 1999-04-28 2002-06-25 Sound Physics Labs, Inc. Sound reproduction employing unity summation aperture loudspeakers
US7392880B2 (en) * 2002-04-02 2008-07-01 Gibson Guitar Corp. Dual range horn with acoustic crossover
CN108989933A (en) * 2018-07-16 2018-12-11 广州艺腾电子产品有限公司 Headphone structure

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2324926A (en) * 1997-05-01 1998-11-04 David Joseph Geiss Cross-over arrangement for a loudspeaker

Also Published As

Publication number Publication date
FR613417A (en) 1926-11-17
US1674683A (en) 1928-06-26

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