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DE3118704A1 - Playback synthesizer - Google Patents

Playback synthesizer

Info

Publication number
DE3118704A1
DE3118704A1 DE19813118704 DE3118704A DE3118704A1 DE 3118704 A1 DE3118704 A1 DE 3118704A1 DE 19813118704 DE19813118704 DE 19813118704 DE 3118704 A DE3118704 A DE 3118704A DE 3118704 A1 DE3118704 A1 DE 3118704A1
Authority
DE
Germany
Prior art keywords
output signals
signal
difference
sum
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.)
Withdrawn
Application number
DE19813118704
Other languages
German (de)
Inventor
Jürgen 5030 Hürth Bornemann
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.)
BRUENS DIETER
Original Assignee
BRUENS DIETER
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 BRUENS DIETER filed Critical BRUENS DIETER
Priority to DE19813118704 priority Critical patent/DE3118704A1/en
Publication of DE3118704A1 publication Critical patent/DE3118704A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04SSTEREOPHONIC SYSTEMS 
    • H04S1/00Two-channel systems

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Stereophonic System (AREA)

Abstract

To produce playbacks from the output signals of commercially available stereo playback devices, the difference and the sum of the output signals of a commercially available stereo playback device are formed, and new output signals are produced by addition and subtraction of the sum signal conducted via a low-pass filter and of the difference signal.

Description

Playback SynthesizerPlayback synthesizer

Playback Synthesizer Die Erfindung betrifft eine Schaltungsanordnung zur Anfertigu.Playback Synthesizer The invention relates to a circuit arrangement for preparation

von Stereo-Playbacks aus den Ausgangssignalen handelsüblicher Stereo-Wiedergabegeräte.of stereo playbacks from the output signals of commercially available stereo playback devices.

Es besteht ein Bedarf an Geräten,die es ermöglichen, Stereo-Schallplatten oder -kassetten so wiederzugeben, daß die Stimme des Sängers kaum oder garnicht zu hören ist, das Xlangbild im übrigen einschließlich des Orchesters, des Chores und des Studiohalles aber möglichst unbeeinträchtigt bleibt. Mit Hilfe eines solchen Gerätes kann der Benutzer bei einem häuslichen "Auftritt" ebenso begleiteterden wie der Interpret auf der Aufnahme.There is a need for devices that allow stereo records to be made or cassettes in such a way that the singer's voice hardly or not at all can be heard, the Xlang picture, by the way, including the orchestra and the choir and the studio hall remains as undisturbed as possible. With the help of such a The user can also accompany the device during a domestic "appearance" like the artist on the recording.

Geräte, die ein Pseudo-Stereoklangbild unter Ausblendung der Stimme des Interpreten wiedergeben, sind nicht bekannt.Devices that produce a pseudo stereo sound image while fading out the voice of the artist are not known.

Der Erfindung liegt die Aufgabe zugrunde, ein solches Pseudo-Stereoklangbild bei Ausblendung der Stimme des Interpreten, aber möglichst weitgehendem Erhalten des Klangbildes im übrigen zu ermöglichen.The invention is based on the object of providing such a pseudo stereo sound image when the interpreter's voice is faded out, but preserved as much as possible to enable the rest of the sound image.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß die Differenz und die Summe der Ausgangssignale eines handelsüblichen Wiedergabegerätes gebildet und neue Ausgangssignale durch Addition und Subtraktion des über einen Tiefpass geführten Summensignals und des Differenzsignals hergestellt werden.According to the invention, this object is achieved in that the difference and the sum of the output signals of a commercially available playback device is formed and new output signals by adding and subtracting the over a low pass guided sum signal and the difference signal are produced.

Die Erfindung macht sich zunutze, daß bei Stereoaufnahmen ein Mittensignal (M), auf dem im wesentlichen die Stimme des Sängers sowie die Baßanteile der Aufnahme übertragen werden, in gleicher Weise auf die "linken" bzw. "rechten" Signale (L) und (R) aufgegeben werden. Die Ausgangssignale eines handelsüblichen Stereo-Wiedergabegerätes können daher als (R+M) bzw.The invention makes use of the fact that a center signal is used in stereo recordings (M), on which essentially the voice of the singer and the bass parts of the recording are transmitted in the same way to the "left" or "right" signals (L) and (R) are abandoned. The output signals of a standard stereo playback device can therefore be used as (R + M) or

(L+M) bezeichnet werden. Das Mittensignal (M) erweckt so bei der Wiedergabe den Eindruck, als werde die Stimme des Sängers zwischen den beiden Tonquellen erzeugt.(L + M). The center signal (M) wakes up during playback the impression that the singer's voice is generated between the two sound sources.

Durch Bildung der Differenz (R+M) - (IJ+M) entsteht ein Signal (R-L). Parallel dazu wird ein Signal (R+M) + (L+M) = (R+L+2M) gebildet und über einen Tiefpass geführt. Das so erzeugte Signal (S) trägt also nur den Baßanteil des Signals (R+L+2M), beinhaltet also im wesentlichen den über das Mittensignal übertragenen Baßanteil der Aufnahme.Forming the difference (R + M) - (IJ + M) creates a signal (R-L). In parallel, a signal (R + M) + (L + M) = (R + L + 2M) is generated and via a low pass guided. The signal (S) generated in this way only carries the bass component of the signal (R + L + 2M), thus essentially contains the bass component transmitted via the center signal the recording.

Dieses Signal (S) wird mit dem Differenzsignal (R-L) so zusammengeführt, daß einmal die Summe aus dem Signal (R-L) = (S) + (R-L) und einmal die Differenz (S) - (R-L) gebildet wird.This signal (S) is combined with the difference signal (R-L) so that that once the sum of the signal (R-L) = (S) + (R-L) and once the difference (S) - (R-L) is formed.

Das Signal (S) + (R+L) bildet das eine der beiden neuen Ausgangssignale, das Signal (S) - (R-L) das andere.The signal (S) + (R + L) forms one of the two new output signals, the signal (S) - (R-L) the other.

Auf diese Weise wird ein Pseudo-Stereo-Klangbild erzeugt, das zum einen auf der Invertierung des Signales, wesentlich aber darauf beruht, daß der Baßanteil des Mittensignales, also (S)t auf beiden Kanälen in gleicher Weise wiedergegeben wird, so daa d- Eindruck entsteht, als werde dieses Signal (S) zwischen den beiden Tonquellen erzeugt.In this way, a pseudo-stereo sound image is generated that is used for the one is based on the inversion of the signal, but essentially on the fact that the The bass component of the center signal, i.e. (S) t, is reproduced in the same way on both channels becomes, so that the impression arises as if this signal (S) is between the two Sound sources generated.

Auf der beiliegenden Zeichnung ist ein Prinzipschaltbild mit den vier Addier-bzw. Subtrahiereinheiten dargestellt.On the accompanying drawing is a basic circuit diagram with the four Adding or Subtraction units shown.

Claims (1)

ANSPRUCH Schaltungsanordnung zur Anfertigung von Stereo-Playbacks aus den Ausgangssignalen handelsüblicher Stereo-Wiedergabegeräte, dadurch gekennzeichnet, daß die Differenz und die Summe der Ausgangs signale eines handelsüblichen Stereo-Wiedergabegerätes gebildet und neue Ausgangssignale durch Addition und Subtraktion des über einen Tiefpaß geführten Summensignais und des Differenzsignals hergestellt werden. CLAIM Circuit arrangement for the production of stereo playbacks from the output signals of commercially available stereo playback devices, characterized in that that the difference and the sum of the output signals of a standard stereo playback device and new output signals are formed by adding and subtracting the over one Low-pass sum signals and the difference signal are produced.
DE19813118704 1981-05-12 1981-05-12 Playback synthesizer Withdrawn DE3118704A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19813118704 DE3118704A1 (en) 1981-05-12 1981-05-12 Playback synthesizer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19813118704 DE3118704A1 (en) 1981-05-12 1981-05-12 Playback synthesizer

Publications (1)

Publication Number Publication Date
DE3118704A1 true DE3118704A1 (en) 1982-12-02

Family

ID=6132040

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19813118704 Withdrawn DE3118704A1 (en) 1981-05-12 1981-05-12 Playback synthesizer

Country Status (1)

Country Link
DE (1) DE3118704A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994005135A1 (en) * 1992-08-22 1994-03-03 Mark Preece Music isolator
US5692050A (en) * 1995-06-15 1997-11-25 Binaura Corporation Method and apparatus for spatially enhancing stereo and monophonic signals

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994005135A1 (en) * 1992-08-22 1994-03-03 Mark Preece Music isolator
US5692050A (en) * 1995-06-15 1997-11-25 Binaura Corporation Method and apparatus for spatially enhancing stereo and monophonic signals
US5883962A (en) * 1995-06-15 1999-03-16 Binaura Corporation Method and apparatus for spatially enhancing stereo and monophonic signals

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Legal Events

Date Code Title Description
8139 Disposal/non-payment of the annual fee