DE2227705C3 - Method for producing multi-channel, preferably four-channel (quadraphonic) sound information - Google Patents

Method for producing multi-channel, preferably four-channel (quadraphonic) sound information

Info

Publication number
DE2227705C3
DE2227705C3 DE2227705A DE2227705A DE2227705C3 DE 2227705 C3 DE2227705 C3 DE 2227705C3 DE 2227705 A DE2227705 A DE 2227705A DE 2227705 A DE2227705 A DE 2227705A DE 2227705 C3 DE2227705 C3 DE 2227705C3
Authority
DE
Germany
Prior art keywords
channel
quadraphonic
stereo
signals
playback
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
DE2227705A
Other languages
German (de)
Other versions
DE2227705B2 (en
DE2227705A1 (en
Inventor
Peter K. 3004 Isernhagen Burkowitz
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.)
Polygram 2000 Hamburg GmbH
Original Assignee
Polygram 2000 Hamburg GmbH
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 Polygram 2000 Hamburg GmbH filed Critical Polygram 2000 Hamburg GmbH
Priority to DE2227705A priority Critical patent/DE2227705C3/en
Priority to US366554A priority patent/US3919477A/en
Priority to JP48063706A priority patent/JPS4952602A/ja
Publication of DE2227705A1 publication Critical patent/DE2227705A1/en
Publication of DE2227705B2 publication Critical patent/DE2227705B2/de
Application granted granted Critical
Publication of DE2227705C3 publication Critical patent/DE2227705C3/en
Expired legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/00992Circuits for stereophonic or quadraphonic recording or reproducing
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04SSTEREOPHONIC SYSTEMS 
    • H04S5/00Pseudo-stereo systems, e.g. in which additional channel signals are derived from monophonic signals by means of phase shifting, time delay or reverberation 
    • H04S5/02Pseudo-stereo systems, e.g. in which additional channel signals are derived from monophonic signals by means of phase shifting, time delay or reverberation  of the pseudo four-channel type, e.g. in which rear channel signals are derived from two-channel stereo signals

Claims (1)

1 21 2 auch in herkömmlicher Ein- oder Zweikanaltechnik Patentanspruch: wiedergegeben werden können.also in conventional one or two-channel technology Claim: can be reproduced. Bei der kompatiblen Wiedergabe von Quadrapho-With the compatible reproduction of quadrapho- Verfahren zur Herstellung einer vielkanaligen, niesignalen auf Zweikanal-Stereoanlagen erscheinen vorzugsweise vierkanaligen (quadraphonischen) S dann jedoch die rückwärtigen Signalanteile automa-Toninformation, insbesondere aus ursprünglich tisch auf den Frontalkanälen. Dies kann besonders für Stereophonische Zweikanal-Wiedergabe ein- bei ursprünglich für stereophonisch^ Wiedergabe opgerichteten Aufnahmen, dadurch gekenn- timal balancierten Aufnahmen, von denen rückwärzeichnet, daß die den rückwärtigen Kanälen tige Quadraphoniesignale künstlich abgeleitet werzugeordneten Signale auch dem seitengleichen io den, zu einer drastischen Beeinträchtigung des Fron-Frontkanal derart nach Betrag (Amplitude) und talklangbildes führen, wenn solche Quadraphooieer-Phase, z.B. gegenphasig, zugemischt werden, daß Zeugnisse an Stelle der optimal balancierten Stereobei der Zusammenschaltung der linken Kanäle aufnahmen kompatibel verwendet werden sollen,
und der rechten Kanäle untereinander der ge- Aufgabe vorliegender Erfindung ist es deshalb,
Method for producing a multi-channel, sneeze signal on two-channel stereo systems, preferably four-channel (quadraphonic) S, but then the rearward signal components automatically sound information, in particular from originally table on the frontal channels. This can, especially for stereophonic two-channel playback, with recordings originally intended for stereophonic playback, characterized by balanced recordings, of which the fact that the signals artificially derived from the quadraphonic signals, which are artificially derived from the rear channels, can also lead to a drastic one Impairment of the front front channel in terms of magnitude (amplitude) and valley sound image if such quadraphonic phases, e.g. out of phase, are mixed in that certificates should be used in place of the optimally balanced stereo recordings when interconnecting the left channels,
and the right channels with each other. The object of the present invention is therefore to
wünschte Grad der Auslöschung eintritt. 15 eine ursprünglich für die Wiedergabe in zweikanali-desired degree of extinction occurs. 15 originally designed for playback in two-channel ger Stereophonietechnik eingerichtete Aufnahme derart in ein Mehrkanal-, insbesondere Quadraphonie-ger stereophonic technology recording in a multi-channel, especially quadraphonic signal umzuwandeln, daß sich bei einer Wiedergabesignal to convert that during playback über zwei Frontalkanäle keine erkennbaren Beeinao trächtiglingen des Klangbildes hinsichtlich der Balance ergeben.over two frontal canals no recognizable impairment of the sound image with regard to balance result. Die Erfindung bezieht sich auf ein Verfahren zur Erfindungsgemäß wird diese Aufgabe bei einemThe invention relates to a method according to the invention, this object is achieved in a Herstellung einer vielkanaligen, vorzugsweise vierka- Verfahren der eingangs genannten Art in der Weise naligen (quadraphonischen) Toninformation, insbe- gelöst, daß die den rückwärtigen Kanälen zugeordneiondere aus ursprünglich für stereophonische Zwei- as ten Signale auch dem seitengleichen Frontkanal derkanal-Wiedergabe eingerichteten Aufnahmen. art nach Betrag (Amplitude) und Phase, z. B. gegen-Production of a multi-channel, preferably four-ka method of the type mentioned at the outset in the manner naligen (quadraphonic) sound information, in particular that it is assigned to the rear channels originally for stereophonic two-way signals and the same-sided front channel derkanal playback set up recordings. type according to amount (amplitude) and phase, e.g. B. against- Durch das in letzter Zeit immer größer werdende phasig, zugemischt werden, daß bei der Zusammen-Angebot von in Mehrkanaltechnik, insbesondere schaltung der linken Kanäle und der rechten Kanäle Quadraphonietechnik, hergestellten Tonträgern ent- untereinander, was der kompatiblen Wiedergabe auf steht für bereits vorhandene Zweikanal-Stereoauf' 30 Stereogeräten entspricht, der gewünschte Grad der nahmen in zunehmendem Maße das Bedürfnis, diese Auslöschung eintritt.Due to the phase, which has been getting bigger and bigger recently, that in the joint offer of in multi-channel technology, in particular switching the left channels and the right channels Quadraphonietechnik, produced sound carriers among each other, what the compatible playback on stands for existing two-channel stereo on '30 stereo devices, the desired level of increasingly took the need for this extinction to occur. durch künstliche Erzeugung zusätzlicher Kanalsignale Auf diese Weise wird bei der kompatiblen Wiederaus den beiden ursprünglichen Stereo-Kanalsignalen gäbe von Quadraphoniesignalen auf Stereogeräten so zu erweitern, daß sie nicht nur quadraphonisch automatisch wieder das ursprünglich optimal balanverwendbar, sondern auch voll kompatibel sind, d. h. 35 eierte Stereoklangbild zurückgewonnen.by artificially generating additional channel signals the two original stereo channel signals would be from quadraphony signals on stereo equipment to expand in such a way that they can not only be used in a quadraphonic way automatically, the originally optimal balan can be used again, but are also fully compatible, i.e. H. 35 stereo sound image recovered.
DE2227705A 1972-06-07 1972-06-07 Method for producing multi-channel, preferably four-channel (quadraphonic) sound information Expired DE2227705C3 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE2227705A DE2227705C3 (en) 1972-06-07 1972-06-07 Method for producing multi-channel, preferably four-channel (quadraphonic) sound information
US366554A US3919477A (en) 1972-06-07 1973-06-04 Method and apparatus for the production of multichannel sound signals
JP48063706A JPS4952602A (en) 1972-06-07 1973-06-06

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2227705A DE2227705C3 (en) 1972-06-07 1972-06-07 Method for producing multi-channel, preferably four-channel (quadraphonic) sound information

Publications (3)

Publication Number Publication Date
DE2227705A1 DE2227705A1 (en) 1973-12-20
DE2227705B2 DE2227705B2 (en) 1975-01-23
DE2227705C3 true DE2227705C3 (en) 1975-09-11

Family

ID=5847075

Family Applications (1)

Application Number Title Priority Date Filing Date
DE2227705A Expired DE2227705C3 (en) 1972-06-07 1972-06-07 Method for producing multi-channel, preferably four-channel (quadraphonic) sound information

Country Status (3)

Country Link
US (1) US3919477A (en)
JP (1) JPS4952602A (en)
DE (1) DE2227705C3 (en)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3584154A (en) * 1968-06-17 1971-06-08 Clarence Hunter Mcshan Stereo multiplex decoding system with a phase locked loop switching signal control
CA938560A (en) * 1969-11-28 1973-12-18 Victor Company Of Japan System for recording and/or reproducing four channel signals on a record disc
US3757047A (en) * 1970-05-21 1973-09-04 Sansui Electric Co Four channel sound reproduction system
CA942198A (en) * 1970-09-15 1974-02-19 Kazuho Ohta Multidimensional stereophonic reproducing system
JPS5213082B1 (en) * 1971-07-19 1977-04-12

Also Published As

Publication number Publication date
JPS4952602A (en) 1974-05-22
DE2227705B2 (en) 1975-01-23
US3919477A (en) 1975-11-11
DE2227705A1 (en) 1973-12-20

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Legal Events

Date Code Title Description
C3 Grant after two publication steps (3rd publication)
E77 Valid patent as to the heymanns-index 1977
EHJ Ceased/non-payment of the annual fee