EP0442388A1 - Montage de circuit pour modifier le signal de sortie d'un appareil acoustique à plusieurs canaux - Google Patents

Montage de circuit pour modifier le signal de sortie d'un appareil acoustique à plusieurs canaux Download PDF

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Publication number
EP0442388A1
EP0442388A1 EP91101757A EP91101757A EP0442388A1 EP 0442388 A1 EP0442388 A1 EP 0442388A1 EP 91101757 A EP91101757 A EP 91101757A EP 91101757 A EP91101757 A EP 91101757A EP 0442388 A1 EP0442388 A1 EP 0442388A1
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EP
European Patent Office
Prior art keywords
terminals
potentiometer
circuit arrangement
polarity
same name
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.)
Withdrawn
Application number
EP91101757A
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German (de)
English (en)
Inventor
Georg Diamantidis
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 EP0442388A1 publication Critical patent/EP0442388A1/fr
Withdrawn legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S7/00—Indicating arrangements; Control arrangements, e.g. balance control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R2420/00—Details of connection covered by H04R, not provided for in its groups
    • H04R2420/03—Connection circuits to selectively connect loudspeakers or headphones to amplifiers

Definitions

  • the invention relates to a circuit arrangement for modifying the output signals of a multi-channel electroacoustic device which has a power amplifier and an electroacoustic transducer for each channel, circuit elements being provided which lead to an interaction between the output signals of the different channels.
  • the object of the present invention is to design a circuit arrangement of the type mentioned at the outset in such a way that the spatial sound experience can be changed in a previously unknown manner.
  • the phases of the signals, which are connected to the electroacoustic transducers belonging to the different channels, can be set continuously to a great extent.
  • Mono signals that are mixed with the multichannel overall signal can be suppressed to a considerable extent without the signal losing its multichannel character and its dynamics.
  • the circuit arrangement according to the invention can be contained in an additional device which can be switched between the conventional commercially available output terminals of an electroacoustic device and the corresponding input terminals of the associated electroacoustic transducers.
  • a type of "adapter” is conceivable in this connection, which can be connected between a stereo device and the headphones or the loudspeaker boxes.
  • the circuit arrangement according to the invention can also be permanently integrated in an electroacoustic device.
  • the potentiometer according to the invention then attains an equally important function as a volume control, balance, bass and treble control as an adjustable element.
  • the circuit arrangement shown in FIG. 1 is primarily intended for an additional device, as is shown schematically in FIGS. 4a and 4b:
  • the circuit arrangement itself is housed in a box 1, from which a line 2 leads to a plug 3, which leads to the existing headphone jack of a stereo device is connected.
  • the room sound experience can be changed by turning a control button 7.
  • FIG. 4b The exemplary embodiment of the additional device, which is shown in FIG. 4b, corresponds completely to that of FIG. 4a with the exception that a sliding regulator 7a is provided instead of the rotary knob 7.
  • the circuit housed in box 1 is very simple; a first exemplary embodiment can be found in FIG. 1:
  • the input terminal 3a which is part of the plug 3, and which is connected via this to the power amplifier of the left stereo channel of the stereo device, leads directly to the positive connection terminal 4a of the left headphone shell 6a.
  • the terminal 3b is connected in a corresponding manner to the power amplifier of the right stereo channel of the stereo device and leads directly to the positive connection terminal 4b of the right headphone shell 6b.
  • the negative connection terminals 4c and 4d of the headphone cups 6a and 6b are connected together and connected via the potentiometer 7 to the terminal 3c of the plug 3, which is connected to the ground of the stereo device.
  • the phase position of the signals supplied to the ear cups and thus the spatial sound experience can be changed in a manner not previously known.
  • the resistance value which can be set on the potentiometer 7 can be continuously changed between 0 ohms and "infinite" (actually a relatively high value). If this resistance value equals 0, then independent currents flow from the amplifier's power amplifiers via the terminals 3a or 3b via the coils of the headphone cups 6a or 6b and the terminal 3c of the connector 3. This corresponds to the normal operation of a stereo device, with the one on the right and left channel are without influence on each other.
  • the resistance value of the potentiometer 7 is increased by turning the knob shown in FIG. 4a or by moving the slide regulator 7a of FIG. 4b, the stereo signals on the terminals 3a and 3b have a progressive influence, specifically depending on the signal.
  • the voltages effectively lying on the headphone cups 6a and 6b can be changed continuously. This allows the dynamics, the position of the musical instruments in the audible angle, the spatial impression, the amount of bass or e.g. change the singer volume within wide limits.
  • circuit arrangement shown in Figure 2 corresponds with a few exceptions described below, the exemplary embodiment described above with reference to FIG. 1. Corresponding parts are therefore provided with the same reference number, plus 100.
  • the terminals 103a, 103b and 103c are firmly connected to the power amplifiers of a stereo device and should be thought within its housing.
  • a left loudspeaker 106a and a right loudspeaker 106b are used as electroacoustic transducers.
  • the minus connection terminal 104a of the loudspeaker 106a is identical here to the switching point 103a, which is connected to the output of the power amplifier for the left stereo channel.
  • the negative connection terminal 104b 103b of the right loudspeaker 106b is connected to the output of the power amplifier for the right stereo channel.
  • the plus terminals 104c and 104d of the same name of the loudspeakers 106a and 106b are connected together and connected to the potentiometer 107 to be thought of in the interior of the stereo device.
  • the other end of the potentiometer 107 is at a point 103c of the internal circuit of the stereo device which is connected to ground.
  • the mode of operation of the exemplary embodiment which is shown in FIG. 2 is essentially identical to that of the exemplary embodiment of FIG. 1.
  • the potentiometers 7 and 107 have the function of a (possibly additional) volume adjustment element.
  • headphones with the left headphone cup 206a and the right headphone cup 206b are used as the electroacoustic transducer.
  • the positive connection terminal 204a of the left ear cup 206a is connected via a further potentiometer 208, which is to be thought within the box 1 of the additional device (see FIG. 4), to the terminal 203a of the plug 203, which in turn carries the left stereo signal of the stereo device .
  • the potentiometer 208 is connected in the opposite direction to the potentiometer 207, i.e. with a rotation in the same sense, the resistance values of the potentiometers 208 and 207 change in opposite directions.
  • the positive connection terminal 204b of the right ear cup 206b is connected via a potentiometer 209 to the terminal 203b of the plug 203, which carries the right stereo signal of the stereo device.
  • connection terminals 204c and 204d of the headphone cups 206a and 206b are connected again and connected via the potentiometer 207 to the terminal 203c of the plug 203, which is connected to ground.
  • the potentiometers 207, 208 and 209 lie on a common axis and are adjusted together. In this way, the values of the resistors 208 and 209 are increased or decreased when the common axis is rotated by a certain angle by an amount which is necessary to compensate for the dynamic change caused by the potentiometer 207.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Stereophonic System (AREA)
  • Circuit For Audible Band Transducer (AREA)
EP91101757A 1990-02-12 1991-02-08 Montage de circuit pour modifier le signal de sortie d'un appareil acoustique à plusieurs canaux Withdrawn EP0442388A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE4004234 1990-02-12
DE4004234 1990-02-12
DE19904030977 DE4030977A1 (de) 1990-02-12 1990-10-01 Schaltungsanordnung zur modifikation der ausgangssignale eines mehrkanaligen elektroakustischen geraets
DE4030977 1990-10-01

Publications (1)

Publication Number Publication Date
EP0442388A1 true EP0442388A1 (fr) 1991-08-21

Family

ID=25890005

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91101757A Withdrawn EP0442388A1 (fr) 1990-02-12 1991-02-08 Montage de circuit pour modifier le signal de sortie d'un appareil acoustique à plusieurs canaux

Country Status (5)

Country Link
EP (1) EP0442388A1 (fr)
JP (1) JPH05344598A (fr)
AU (1) AU7214391A (fr)
DE (1) DE4030977A1 (fr)
WO (1) WO1991012699A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4133393C2 (de) * 1991-10-09 1994-10-20 Stefan Gunther Schaltungsanordnung zum Einstellen der Basisbreite bei zweikanaliger, stereophoner Tonwiedergabe
DE9400614U1 (de) * 1994-01-18 1994-03-31 Hauraton Betonwarenfabrik GmbH & Co KG, 76437 Rastatt Lösbare Befestigung einer auf einem Grundkörper randseitig aufliegenden Abdeckung
DE9406140U1 (de) 1994-04-13 1995-08-17 König, Florian, Dipl.-Ing., 82110 Germering Walkman-Mehrkanal-Tonwiedergabe-Versorgung für Raumklang-Kopfhörer
JP4134755B2 (ja) 2003-02-28 2008-08-20 ヤマハ株式会社 スピーカーアレイ駆動装置
WO2021210689A1 (fr) * 2020-04-15 2021-10-21 利也 川端 Circuit de réglage de son et dispositif à fiche l'utilisant

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3697692A (en) * 1971-06-10 1972-10-10 Dynaco Inc Two-channel,four-component stereophonic system
US3924072A (en) * 1974-07-10 1975-12-02 Koss Corp Headphone with cross feeding ambience control
US3958085A (en) * 1971-09-20 1976-05-18 The Magnavox Company Compatible 4-2-4 encoding-decoding system
FR2357135A1 (fr) * 1976-07-01 1978-01-27 Nat Res Dev Systeme de reproduction sonore multi-voies

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE737121C (de) * 1941-09-04 1943-07-07 Klangfilm G M B H Anordnung zur Kontrolle von Zweikanal-Stereotondarbietungen mittels Doppelkopfhoerer

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3697692A (en) * 1971-06-10 1972-10-10 Dynaco Inc Two-channel,four-component stereophonic system
US3958085A (en) * 1971-09-20 1976-05-18 The Magnavox Company Compatible 4-2-4 encoding-decoding system
US3924072A (en) * 1974-07-10 1975-12-02 Koss Corp Headphone with cross feeding ambience control
FR2357135A1 (fr) * 1976-07-01 1978-01-27 Nat Res Dev Systeme de reproduction sonore multi-voies

Also Published As

Publication number Publication date
WO1991012699A1 (fr) 1991-08-22
DE4030977A1 (de) 1991-08-14
JPH05344598A (ja) 1993-12-24
AU7214391A (en) 1991-09-03

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