EP2952016B1 - Method for processing a multichannel sound in a multichannel sound system - Google Patents
Method for processing a multichannel sound in a multichannel sound system Download PDFInfo
- Publication number
- EP2952016B1 EP2952016B1 EP13705936.6A EP13705936A EP2952016B1 EP 2952016 B1 EP2952016 B1 EP 2952016B1 EP 13705936 A EP13705936 A EP 13705936A EP 2952016 B1 EP2952016 B1 EP 2952016B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- signals
- signal
- surround
- difference
- stereo
- 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.)
- Active
Links
- 238000000034 method Methods 0.000 title claims description 47
- 238000012545 processing Methods 0.000 title claims description 13
- 230000001419 dependent effect Effects 0.000 claims description 9
- 238000004422 calculation algorithm Methods 0.000 claims description 4
- 230000008569 process Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 230000006872 improvement Effects 0.000 description 4
- 238000000354 decomposition reaction Methods 0.000 description 3
- 230000004044 response Effects 0.000 description 3
- 238000004364 calculation method Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 238000012805 post-processing Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 230000008033 biological extinction Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000009795 derivation Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000003032 molecular docking Methods 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 230000008447 perception Effects 0.000 description 1
- 230000010363 phase shift Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04S—STEREOPHONIC SYSTEMS
- H04S3/00—Systems employing more than two channels, e.g. quadraphonic
- H04S3/02—Systems employing more than two channels, e.g. quadraphonic of the matrix type, i.e. in which input signals are combined algebraically, e.g. after having been phase shifted with respect to each other
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04S—STEREOPHONIC SYSTEMS
- H04S5/00—Pseudo-stereo systems, e.g. in which additional channel signals are derived from monophonic signals by means of phase shifting, time delay or reverberation
- H04S5/02—Pseudo-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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04S—STEREOPHONIC SYSTEMS
- H04S2400/00—Details of stereophonic systems covered by H04S but not provided for in its groups
- H04S2400/13—Aspects of volume control, not necessarily automatic, in stereophonic sound systems
Definitions
- the invention relates to a method for multi-channel sound processing in a multi-channel sound system according to the preamble of claim 1.
- the front signals Lo and Ro, the center signal Co and the surround signals L RO and R RO are derived from stereo signals, ie from the input signals L and R.
- the respective other signals are subtracted from the signals L, R, L + R and LR with a weighting.
- frequency-dependent weighting factors are derived in addition to the level ratio calculations.
- the center signal C is varied only in the level, whereas the two surround signals L and R RO RO in two frequency bands and phase inverted derived.
- the coefficients a 1 ... A 8 of these weighted summations are derived from level measurements.
- two control signals from the level difference of a left and right channel D LR and level difference of a sum and difference signal Des are calculated.
- the two front signals L out and R out are thereby from the two input signals L and R and the subtraction of a weighted sum signal (L + R) and of a weighted difference signal (LR) obtained.
- the center signal C results from the sum (L + R) and the subtraction of the weighted input signals L and R.
- the surround signal S is made up of the sum (LR) and the subtraction of the weighted input signals L and R.
- the weighting coefficients g l , g r , g c and g s are obtained from a level matching of the signals L and R and L + R and LR in a recursive structure.
- This time-variant multi-channel control ensures a spatial displacement of the signal, if then again a stereo encoding is made.
- Much more decisive for a spatial resolution improvement of stereo signals is an extraction of directional signal components and their weighting by static or frequency-dependent weighting. Therefore, the document WO 2010/015275 A1 represents a significant advance of the method of the type mentioned, since here the decomposition of stereo signals in spatial proportions takes place in order to assess these with different level controls. Thereafter, the valued spatial signals are reassembled into a stereo signal. Due to the weighting of the spatial signal components, the stereo signal experiences an improvement of the spatial reproduction.
- US2012 / 0263306 A1 discloses a four-channel stereophonic device. It is therefore an object of the invention to further develop a method of the type mentioned above, that on the basis of an extraction of directional signal components, a further improvement of the spatial reproduction of the input signals L and R is achieved. This object is achieved with the features of claim 1.
- the derivation of the surround signals from the difference LR has proven to be another important step for improved stereo and spatial expansion.
- a space signal R is formed into a center signal.
- the space signal is formed from the difference between the signals L and R (R L ) and / or the difference between the signals R and L (R R ).
- the inventive method a spatial and Stereo extension of a stereo signal achieved by an extension of the stereo decomposition.
- the advantage here is a frequency-dependent weighting of the surround signals.
- a frequency-dependent weighting of the signals S L and S R takes place .
- the frequency-dependent weighting is preferably carried out by means of a height-helving filter.
- the signals L and R are expediently added to the signals L P and R P.
- the invention also provides software residing on a signal processor, i. is imported to the signal processor.
- the software contains an algorithm which is processed by the signal processor, the algorithm detecting the method.
- the method begins with the fact that in the context of decoding the input signals L and R, which are present as stereo signals, are divided into three signal components, wherein the signals L and R can be retained.
- the signal components are the center signal C, the spatial signal R and the surround signals S L and S R.
- the center signal C is single-channel, ie it contains only the channel C, whereas the space signal R and the surround signal S are two-channel, ie they contain the signals R L and R R and S L and S R.
- the surround and space signals S L , S R and R L and R R contain the direction and spatial information of the stereo signals L and R.
- the process section A is followed by the process section B, in which the processing of the channels C, R L , R R , S L and S R takes place.
- these signals are provided by first level control 1, 2 with a level weighting, which manifests itself in the factor 1.5.
- the further level controls 3, 4 provide a further variable level weighting, which weights the sound characteristics of the decoded signals to L, R.
- the filters 5, 6 have a minimum phase shift in the frequency range of preferably 2 kHz, so that extinction effects are minimized in the taking place in process section C encoding, at the same time the actual gain effect is emphasized with a height helving frequency response of, for example, 3 dB, preferably 2KHZ.
- the surround signals S L , S R are supplied to the level selectors 7, 8 which weight the sound characteristics of the decoded signals to S L , S R.
- the encoded weighted signals are found L P , R P a post-processing by stereo equalizer 9, 10.
- a special non-linear characteristic NL is used. This non-linear characteristic maps an input amplitude x to an output amplitude y.
- the signals L P , R P undergo further post-processing in the method section D such that the level adjusters 11, 12 determine the degree of overtone mixing to the direct signal. Further processing is finally carried out by the level control 13, 14, which make the overall level of the process result adjustable.
- the present invention is not limited in its execution to the embodiment given above. Rather, a number of variants is conceivable, which make use of the solution shown in other types.
- ie compressors / limiters are used to further enrich the sound image.
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Algebra (AREA)
- General Physics & Mathematics (AREA)
- Mathematical Analysis (AREA)
- Mathematical Optimization (AREA)
- Mathematical Physics (AREA)
- Pure & Applied Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Stereophonic System (AREA)
Description
Die Erfindung betrifft ein Verfahren zur Mehrkanaltonbearbeitung in einem Mehrkanaltonsystem gemäß dem Oberbegriff des Anspruchs 1.The invention relates to a method for multi-channel sound processing in a multi-channel sound system according to the preamble of claim 1.
Ein Verfahren der eingangs genannten Art ist dem Fachmann bekannt und geläufig und wird in der
In dem in der Druckschrift
Ein weiteres Verfahren der eingangs genannten Art offenbart die Druckschrift
Auch dient in der Druckschrift
Die beschriebenen Verfahren zur Mehrkanalbearbeitung in einem Mehrkanaltonsystem sind hauptsächlich für die Verarbeitung von Kinoton-Signalen entwickelt worden. Hierbei ist es wichtig gewesen, dynamisch auftretende Richtungen von Signalen, zumeist in Form von Sprach- und Effektsignalen, räumlich über mehrere Lautsprecher richtungsadäquat wiederzugeben. Die dynamische Ansteuerung dieser Mehrkanalsignale unterstützt die Richtungswahrnehmung bei derartigen Signalarten. Demgegenüber ist jedoch die Richtungsinformation in musikalischen Stereo-Aufnahmen zu einem hohen Prozentsatz nicht dynamisch, sondern eher statisch und ändert sich bei speziellen Raumeffekten eher geringfügig. Akustische Untersuchungen im Rahmen des in der Druckschrift
Wesentlich entscheidender für eine räumliche Auflösungsverbesserung von Stereo-Signalen ist dagegen eine Extraktion von Richtungssignalanteilen und deren Gewichtung durch statische oder frequenzabhängige Gewichtung. Von daher stellt die Druckschrift
Much more decisive for a spatial resolution improvement of stereo signals, however, is an extraction of directional signal components and their weighting by static or frequency-dependent weighting. Therefore, the document
Die Veröffentlichung "QA-800, A single unit, four-channel pre/main amplifier for the creation of a living presence quadraphonic sound field" von Pioneer, 2010, offenbart verschiedene Beispiele von Vierkanalstereofoniesystemen.Pioneer's 2010 publication "QA-800, A single unit, four-channel pre / main amplifier for the creation of a quadraphonic sound field" reveals several examples of four-channel stereophonic systems.
Diese Aufgabe wird mit den Merkmalen des Anspruches 1 gelöst. Vorteilhafte Ausgestaltungen der Erfindung ergeben sich aus den Unteransprüchen.
Gemäß der Erfindung werden im Rahmen einer Decodierung aus den Signalen R und L, die räumlich wiedergegeben werden, mindestens zwei Signale der Form nL-mR mit n, m = 1, 2, 3, 4 gebildet. Hierdurch wird vorteilhafterweise eine Verbesserung der räumlichen Wiedergabe und Transparenz der Eingangs-Signale L und R erzielt. Hierzu werden bei der Decodierung vorzugsweise die Signale L-R (das heißt mit n,m=l) und 2L-R (das heißt mit n=2 und m=l) gebildet. Im Rahmen von psychoakustischen Untersuchungen hat sich zudem die Ableitung der Surround-Signale aus der Differenz L-R als weiterer wichtiger Schritt für eine verbesserte Stereo- und Raumaufweitung erwiesen. Hierbei hat sich wiederum nach intensivem Hörtest das Verhältnis der Surround-Signale SL=2L-R und SR=2R-L als günstig herausgestellt. Die Erfindung sieht daher vor, dass das Surround-Signal SL=2L-R und das Surround-Signal SR aus der Differenz SR=2R-L gebildet werden.
This object is achieved with the features of claim 1. Advantageous embodiments of the invention will become apparent from the dependent claims.
According to the invention, at least two signals of the form nL-mR with n, m = 1, 2, 3, 4 are formed as part of a decoding from the signals R and L, which are reproduced spatially. As a result, an improvement of the spatial reproduction and transparency of the input signals L and R is advantageously achieved. For this purpose, in the decoding preferably the signals LR (that is, with n, m = l) and 2L-R (that is, with n = 2 and m = l) are formed. In the context of psychoacoustic examinations, the derivation of the surround signals from the difference LR has proven to be another important step for improved stereo and spatial expansion. In this case, the ratio of the surround signals S L = 2L-R and S R = 2R-L turned out to be favorable again after intensive listening test. The invention therefore provides that the surround signal S L = 2L-R and the surround signal S R from the difference S R = 2R L are formed.
Vorzugsweise werden im Rahmen der Decodierung aus den Signalen L und R ein Raumsignal R und in ein Center-Signal gebildet. Das Raumsignal wird dabei aus der Differenz der Signale L und R (RL) und/oder aus der Differenz der Signale R und L (RR) gebildet.Preferably, as part of the decoding of the signals L and R, a space signal R and formed into a center signal. The space signal is formed from the difference between the signals L and R (R L ) and / or the difference between the signals R and L (R R ).
Entgegen den herkömmlichen Verfahren, die eine Zerlegung der Signale L und R in die Front-Signale Lfront und Rfront, das Center-Signal C und die Surround-Signale SL und SR vorsehen, wird durch das erfindungsgemäße Verfahren eine Raum- und Stereo-Erweiterung eines Stereo-Signales durch eine Erweiterung der Stereo-Zerlegung erreicht. Hierzu werden die Raum-Signale RL=L-R und RR=R-L zusätzlich aus den Eingangskanälen R und L gerechnet.Contrary to the conventional methods, which provide for a decomposition of the signals L and R in the front signals L front and R front , the center signal C and the surround signals S L and S R , by the inventive method a spatial and Stereo extension of a stereo signal achieved by an extension of the stereo decomposition. For this, the space signals R L = LR and RR = RL are also from the input channels R and L calculated.
Diese Eigenschaften sind bei den folgenden Systemen verifiziert:
- MS40 Behringer-Monitor-Lautsprecher
- Notebook Toshiba
- IMAC27 Rechner
- Mobiltelefon LG GM205 mit DolbyMobile
- Philips Flatscreen-Fernseher 42PFL9703D mit BBE Surround
- Dockingstation JBL On Stage 400p.
- MS40 Behringer monitor speakers
- Notebook Toshiba
- IMAC27 calculator
- Mobile phone LG GM205 with DolbyMobile
- Philips Flatscreen TV 42PFL9703D with BBE Surround
- Docking Station JBL On Stage 400p.
Vergleiche zu DolbyMobile, Virtual Dolby Surround und anderen Stereo-Spatializern zeigen, dass das erfindungsgemäße Verfahren eine wesentlich neutralere Verbesserung des Stereo-Klangbildes erzeugt.Comparisons to Dolby Mobile, Virtual Dolby Surround and other stereo spatializers show that the inventive method produces a much more neutral enhancement of the stereo soundscape.
Von Vorteil ist dabei eine frequenzabhängige Gewichtung der Surround-Signale. Zweckmäßigerweise erfolgt daher eine frequenzabhängige Gewichtung der Signale SL und SR. Die frequenzabhängige Gewichtung erfolgt vorzugsweise mittels eines Höhenshelving-Filters.The advantage here is a frequency-dependent weighting of the surround signals. Appropriately, therefore, a frequency-dependent weighting of the signals S L and S R takes place . The frequency-dependent weighting is preferably carried out by means of a height-helving filter.
Zweckmäßigerweise werden zu den Signalen LP und RP die Signale L und R addiert.The signals L and R are expediently added to the signals L P and R P.
Im Rahmen der Erfindung ist auch eine Software vorgesehen, die sich auf einem Signalprozessor befindet, d.h. auf den Signalprozessor importiert ist. Die Software enthält dabei einen Algorithmus, der von dem Signalprozessor abgearbeitet wird, wobei der Algorithmus das Verfahren erfasst.The invention also provides software residing on a signal processor, i. is imported to the signal processor. The software contains an algorithm which is processed by the signal processor, the algorithm detecting the method.
Im Folgenden wird die Erfindung anhand der Zeichnung näher erläutert. Es zeigt in schematischer Darstellung:
- Fig. 1
- ein Verfahren gemäß der Erfindung und
- Fig. 2
- eine weitere Ausführungsform des Verfahrens aus
Fig. 1 .
Das erfindungsgemäße Verfahren zeichnet sich dadurch aus, dass im Rahmen einer Decodierung aus den Signalen R und L mindestens zwei Signale der Form nL-mR mit n, m =1, 2, 3, 4 gebildet werden. Wie aus
- die Decodierung (Verfahrensabschnitt A),
- die Verarbeitung der decodierten Signale (Verfahrensabschnitt B),
- die Encodierung (Verfahrensabschnitt C),
- die Verarbeitung der encodierten Signale (Verfahrensabschnitt D).
- Fig. 1
- a method according to the invention and
- Fig. 2
- a further embodiment of the method
Fig. 1 ,
The inventive method is characterized in that in the context of a decoding from the signals R and L at least two signals of the form nL mR with n, m = 1, 2, 3, 4 are formed. How out
- the decoding (method section A),
- the processing of the decoded signals (method section B),
- the encoding (method section C),
- the processing of the encoded signals (method section D).
Das Verfahren beginnt damit, dass im Rahmen der Decodierung die Eingangs-Signale L und R, die als Stereo-Signale vorliegen, in drei Signalanteile zerlegt werden, wobei die Signale L und R erhalten bleiben können. Bei den Signalanteilen handelt es sich um das Center-Signal C, das Raumsignal R sowie die Surround-Signale SL und SR. Das Center-Signal C ist dabei einkanalig, d.h. es enthält nur den Kanal C, wohingegen das Raum-Signal R und das Surround-Signal S zweikanalig sind, d.h. sie enthalten die Signale RL und RR bzw. SL und SR. Die Surround- und Raum-Signale SL, SR sowie RL und RR enthalten dabei die Richtung und Rauminformation der Stereo-Signale L und R.The method begins with the fact that in the context of decoding the input signals L and R, which are present as stereo signals, are divided into three signal components, wherein the signals L and R can be retained. The signal components are the center signal C, the spatial signal R and the surround signals S L and S R. The center signal C is single-channel, ie it contains only the channel C, whereas the space signal R and the surround signal S are two-channel, ie they contain the signals R L and R R and S L and S R. The surround and space signals S L , S R and R L and R R contain the direction and spatial information of the stereo signals L and R.
In Verfahrensabschnitt A werden die Signale, d.h.
- der einkanalige Center-Signal C=L+R, auch Mono-Signal genannt,
- der Stereo-Anteil RL=L-R und RR=R-L des zweikanaligen Raum-Signales R sowie
- die beiden zweikanaligen Surround-Kanäle SL=2L-R und SR=2R-L,
- the single-channel center signal C = L + R, also called mono signal,
- the stereo part R L = LR and R R = RL of the two-channel room signal R and
- the two two-channel surround channels S L = 2L-R and S R = 2R-L,
Dem Verfahrensabschnitt A schließt sich der Verfahrensabschnitt B an, in dem die Verarbeitung der Kanäle C, RL, RR, SL und SR erfolgt. Um die Lautstärke des Center-Signales C und des Raum-Signales RL=L-R und RR=R-L einzustellen, werden diese Signale durch erste Pegelsteller 1, 2 mit einer Pegelgewichtung versehen, die sich in dem Faktor 1,5 manifestiert. Nach dieser ersten Pegelgewichtung erfolgt durch die weiteren Pegelsteller 3, 4 eine weitere variable Pegelgewichtung, die die Klangcharakteristika der decodierten Signale zu L, R gewichten.The process section A is followed by the process section B, in which the processing of the channels C, R L , R R , S L and S R takes place. To adjust the volume of the center signal C and the space signal R L = LR and R R = RL, these signals are provided by
Die beiden Surround-Signale SL=2L-R und SR=2R-L werden dagegen Höhenshelving-Filtern 5, 6 zugeführt, durch die der Frequenzgang der Surround-Signale SL und SR eingestellt werden. Es findet also eine frequenzabhängige Gewichtung der Signale SL und SR statt, wobei die Filter 5, 6 eine minimale Phasenverschiebung im Frequenzbereich um vorzugsweise 2 kHz aufweisen, so dass Auslöschungseffekte bei der in Verfahrensabschnitt C stattfindenden Encodierung minimiert werden, gleichzeitig der eigentliche Verstärkungseffekt jedoch betont wird und zwar mit einem Höhenshelving-Frequenzgang um beispielsweise 3 dB bei vorzugsweise 2KHZ. Danach werden die Surround-Signale SL, SR den Pegelstellern 7, 8 zugeführt, die die Klangcharakteristika der decodierten Signale zu SL, SR gewichten.The two surround signals S L = 2L-R and S R = 2R-L, on the other hand, are supplied to height-
Bei der Encodierung, d.h. in dem Verfahrensabschnitt C, ergeben sich somit nach Summation, die schon in dem Verfahrensschritt A gegeben ist, der Signale C, RL, RR, SL, SR in der Form:
In dem letzten Verfahrensabschnitt D erfahren die encodierten gewichteten Signale LP, RP eine Nachbearbeitung durch Stereo-Equalizer 9, 10. Zur weitere Anreicherung des Klangbildes wird eine spezielle nichtlineare Kennlinie NL verwendet. Diese nichtlineare Kennlinie bildet eine Eingangsamplitude x auf eine Ausgangsamplitude y ab. Die eingesetzte, nicht lineare Kennlinie y=f(x) lautet
Durch diese Kennlinie werden dem Direkt-Musiksignal harmonische Obertöne hinzugefügt. Schließlich erfahren die Signale LP, RP eine weitere Nachverarbeitung in dem Verfahrensabschnitt D derart, dass die Pegelsteller 11, 12 den Grad der Obertonzumischung zum Direktsignal bestimmen. Eine weitere Bearbeitung erfolgt schließlich durch die Pegelsteller 13, 14, die den Gesamtpegel des Verfahrensergebnisses regelbar machen.This characteristic adds harmonic overtones to the direct music signal. Finally, the signals L P , R P undergo further post-processing in the method section D such that the
Die vorliegende Erfindung beschränkt sich in ihrer Ausführung nicht auf das vorstehend angegebene Ausführungsbeispiel. Vielmehr ist eine Anzahl von Varianten denkbar, welche von der dargestellten Lösung auch bei anders gearteten Ausführungen Gebrauch machen. Beispielsweise können im Rahmen des Verfahrensabschnittes D Maximizer, d.h. Kompressoren/Limiter Anwendung finden, um das Klangbild weiter anzureichern.The present invention is not limited in its execution to the embodiment given above. Rather, a number of variants is conceivable, which make use of the solution shown in other types. For example, in the context of the method section D Maximizer, ie compressors / limiters are used to further enrich the sound image.
- 1, 21, 2
- erste Pegelstellerfirst level control
- 3, 43, 4
- weitere Pegelstellerfurther level controls
- 5, 65, 6
- Höhenshelving-FilterHöhenshelving filter
- 7, 87, 8
- Pegelstellerlevel control
- 9, 109, 10
- Stereo-EqualizerStereo equalizer
- 11, 12,11, 12,
- 13, 1413, 14
- weitere Komponentenother components
Claims (11)
- A method for processing a multichannel sound in a multichannel sound system, in which the input signals L and R are decoded, preferably as stereo signals, wherein the signals R and L are decoded at least into two signals of the form nL-mR with n, m = 1, 2, 3, 4, characterized in that the input signals L and R are spatially reproduced and a surround signal SL is formed from the difference SL = 2L-R and a surround signal SR from the difference SR = 2R-L.
- The method according to claim 1, wherein the signals L and R are decoded into a spatial signal R and into a center signal, wherein a spatial signal RL is formed from the difference of the signals L and R and/or a spatial signal RR from the difference of the signals R and L.
- The method according to claim 3, wherein the signals RL, RR, C, SL and SR contain a level weighting VC, VR, VS.
- The method according to one of claims 3 to 5, wherein a frequency-dependent weighting of the signals SL and SR takes place.
- The method according to claim 6, wherein the frequency-dependent weighting takes place by means of a height-shelving filter (5, 6).
- The method according to one of claims 3 to 6, wherein the signals LP, RP are filtered by means of an equalizer (9, 10).
- The method according to one of claims 3 to 7, wherein harmonic overtones are added to the signals LP, RP.
- The method according to claim 9, wherein the addition of the harmonic overtones takes places by means of a compressor/limiter or a non-linear characteristic line of the form y=tanh((1/7.522*atan(7.522*x)*(sign(x)+1)/2+x*(sign(-x)+1)/2)/0.5)*0.5, wherein this non-linear characteristic line maps an input amplitude x to an output amplitude y.
- A software, which is imported onto a signal processor, characterized in that the software contains an algorithm, which is executed by the signal processor, wherein the algorithm includes the method according to one of claims 1 to 10.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/EP2013/052127 WO2014117867A1 (en) | 2013-02-04 | 2013-02-04 | Method for processing a multichannel sound in a multichannel sound system |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2952016A1 EP2952016A1 (en) | 2015-12-09 |
EP2952016B1 true EP2952016B1 (en) | 2018-09-26 |
Family
ID=47749772
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP13705936.6A Active EP2952016B1 (en) | 2013-02-04 | 2013-02-04 | Method for processing a multichannel sound in a multichannel sound system |
Country Status (7)
Country | Link |
---|---|
US (1) | US9628932B2 (en) |
EP (1) | EP2952016B1 (en) |
JP (1) | JP6438892B2 (en) |
KR (1) | KR102089821B1 (en) |
CN (1) | CN104969575B (en) |
SG (1) | SG11201506075UA (en) |
WO (1) | WO2014117867A1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9380383B2 (en) | 2013-09-06 | 2016-06-28 | Gracenote, Inc. | Modifying playback of content using pre-processed profile information |
CN110719563B (en) * | 2018-07-13 | 2021-04-13 | 海信视像科技股份有限公司 | Method for adjusting stereo sound image and circuit for acquiring stereo sound image |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2439863A1 (en) * | 1973-08-20 | 1975-03-06 | Sansui Electric Co | FOUR CHANNEL DECODING MATRIX |
US20120263306A1 (en) * | 2011-04-18 | 2012-10-18 | Paul Blair McGowan | Acoustic Spatial Projector |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5046098A (en) | 1985-03-07 | 1991-09-03 | Dolby Laboratories Licensing Corporation | Variable matrix decoder with three output channels |
JPS62146000A (en) * | 1985-12-20 | 1987-06-30 | Sony Corp | Sound field extending signal generating circuit |
JPH05316600A (en) * | 1992-05-12 | 1993-11-26 | Nec Corp | Surround circuit |
US5771295A (en) * | 1995-12-26 | 1998-06-23 | Rocktron Corporation | 5-2-5 matrix system |
US6697491B1 (en) | 1996-07-19 | 2004-02-24 | Harman International Industries, Incorporated | 5-2-5 matrix encoder and decoder system |
US5970153A (en) * | 1997-05-16 | 1999-10-19 | Harman Motive, Inc. | Stereo spatial enhancement system |
JP4627880B2 (en) * | 1997-09-16 | 2011-02-09 | ドルビー ラボラトリーズ ライセンシング コーポレイション | Using filter effects in stereo headphone devices to enhance the spatial spread of sound sources around the listener |
US7035413B1 (en) * | 2000-04-06 | 2006-04-25 | James K. Waller, Jr. | Dynamic spectral matrix surround system |
EP1362499B1 (en) | 2000-08-31 | 2012-02-15 | Dolby Laboratories Licensing Corporation | Method for apparatus for audio matrix decoding |
JP2003333699A (en) * | 2002-05-10 | 2003-11-21 | Pioneer Electronic Corp | Matrix surround decoding apparatus |
JP4580210B2 (en) * | 2004-10-19 | 2010-11-10 | ソニー株式会社 | Audio signal processing apparatus and audio signal processing method |
JP2007311965A (en) * | 2006-05-17 | 2007-11-29 | Pioneer Electronic Corp | Digital audio signal processor |
DE102008036924B4 (en) | 2008-08-08 | 2011-04-21 | Gunnar Kron | Method for multi-channel processing in a multi-channel sound system |
-
2013
- 2013-02-04 CN CN201380072179.5A patent/CN104969575B/en active Active
- 2013-02-04 JP JP2015555596A patent/JP6438892B2/en active Active
- 2013-02-04 US US14/765,408 patent/US9628932B2/en active Active
- 2013-02-04 KR KR1020157022782A patent/KR102089821B1/en active IP Right Grant
- 2013-02-04 SG SG11201506075UA patent/SG11201506075UA/en unknown
- 2013-02-04 WO PCT/EP2013/052127 patent/WO2014117867A1/en active Application Filing
- 2013-02-04 EP EP13705936.6A patent/EP2952016B1/en active Active
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2439863A1 (en) * | 1973-08-20 | 1975-03-06 | Sansui Electric Co | FOUR CHANNEL DECODING MATRIX |
US20120263306A1 (en) * | 2011-04-18 | 2012-10-18 | Paul Blair McGowan | Acoustic Spatial Projector |
Non-Patent Citations (1)
Title |
---|
UNKNOWN: "A single unit, four-channel pre/main amplifier for the creation of a living presence quadraphonic sound field.", 9 June 2010 (2010-06-09), Internet, XP055333424, Retrieved from the Internet <URL:http://www.vintageshifi.com/repertoire-pdf/pdf/telecharge.php?pdf=Pioneer-QA-800-Brochure.pdf> [retrieved on 20170109] * |
Also Published As
Publication number | Publication date |
---|---|
SG11201506075UA (en) | 2015-09-29 |
CN104969575B (en) | 2018-03-23 |
KR20150114508A (en) | 2015-10-12 |
WO2014117867A1 (en) | 2014-08-07 |
EP2952016A1 (en) | 2015-12-09 |
CN104969575A (en) | 2015-10-07 |
US9628932B2 (en) | 2017-04-18 |
US20150382125A1 (en) | 2015-12-31 |
KR102089821B1 (en) | 2020-03-17 |
JP6438892B2 (en) | 2018-12-19 |
JP2016509427A (en) | 2016-03-24 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE69827775T2 (en) | TONKANALSMISCHUNG | |
DE602005006385T2 (en) | DEVICE AND METHOD FOR CONSTRUCTING A MULTI-CHANNEL OUTPUT SIGNAL OR FOR PRODUCING A DOWNMIX SIGNAL | |
DE69433258T2 (en) | Surround sound signal processing device | |
EP2206113B1 (en) | Device and method for generating a multi-channel signal using voice signal processing | |
DE602005005186T2 (en) | METHOD AND SYSTEM FOR SOUND SOUND SEPARATION | |
EP2036400B1 (en) | Generation of decorrelated signals | |
DE19715498B4 (en) | Stereo sound image enhancement apparatus and methods using tables | |
DE112012006457B4 (en) | Frequency characteristic modification device | |
DE112011100216T5 (en) | Dynamic compression-based bass enhancement with EQ | |
EP2939445B1 (en) | Production of 3d audio signals | |
WO2015049334A1 (en) | Method and apparatus for downmixing a multichannel signal and for upmixing a downmix signal | |
WO2015049332A1 (en) | Derivation of multichannel signals from two or more basic signals | |
DE102019135690B4 (en) | Method and device for audio signal processing for binaural virtualization | |
EP2917908A1 (en) | Non-linear inverse coding of multichannel signals | |
DE19632734A1 (en) | Method and device for generating a multi-tone signal from a mono signal | |
EP2952016B1 (en) | Method for processing a multichannel sound in a multichannel sound system | |
DE19645867A1 (en) | Multiple channel sound transmission method | |
DE10148351A1 (en) | Method and device for selecting a sound algorithm | |
DE112019004139T5 (en) | SIGNAL PROCESSING DEVICE, SIGNAL PROCESSING METHOD AND PROGRAM | |
DE69025092T2 (en) | Device for controlling acoustic transmission data | |
DE102010015630B3 (en) | Method for generating a backwards compatible sound format | |
WO2015128376A1 (en) | Autonomous residual determination and yield of low-residual additional signals | |
EP3275212B1 (en) | Method for analysing and decomposing stereo audio signals | |
DE756615C (en) | Stereophonic transmission of sound vibrations | |
DE112019004193T5 (en) | AUDIO PLAYBACK DEVICE, AUDIO PLAYBACK METHOD AND AUDIO PLAYBACK PROGRAM |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 20150903 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
AX | Request for extension of the european patent |
Extension state: BA ME |
|
DAX | Request for extension of the european patent (deleted) | ||
17Q | First examination report despatched |
Effective date: 20160909 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: EXAMINATION IS IN PROGRESS |
|
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: KRONOTON GMBH |
|
GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: GRANT OF PATENT IS INTENDED |
|
INTG | Intention to grant announced |
Effective date: 20171201 |
|
GRAS | Grant fee paid |
Free format text: ORIGINAL CODE: EPIDOSNIGR3 |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE PATENT HAS BEEN GRANTED |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: FG4D Free format text: NOT ENGLISH |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: EP |
|
REG | Reference to a national code |
Ref country code: AT Ref legal event code: REF Ref document number: 1047474 Country of ref document: AT Kind code of ref document: T Effective date: 20181015 |
|
REG | Reference to a national code |
Ref country code: IE Ref legal event code: FG4D Free format text: LANGUAGE OF EP DOCUMENT: GERMAN |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R096 Ref document number: 502013011168 Country of ref document: DE |
|
REG | Reference to a national code |
Ref country code: NL Ref legal event code: MP Effective date: 20180926 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FI Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20180926 Ref country code: SE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20180926 Ref country code: BG Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20181226 Ref country code: LT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20180926 Ref country code: NO Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20181226 Ref country code: GR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20181227 Ref country code: RS Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20180926 |
|
REG | Reference to a national code |
Ref country code: LT Ref legal event code: MG4D |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: HR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20180926 Ref country code: LV Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20180926 Ref country code: AL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20180926 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: ES Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20180926 Ref country code: IS Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20190126 Ref country code: EE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20180926 Ref country code: NL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20180926 Ref country code: RO Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20180926 Ref country code: IT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20180926 Ref country code: PL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20180926 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SM Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20180926 Ref country code: PT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20190126 Ref country code: SK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20180926 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R097 Ref document number: 502013011168 Country of ref document: DE |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20180926 |
|
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
26N | No opposition filed |
Effective date: 20190627 |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LU Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20190204 Ref country code: SI Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20180926 Ref country code: MC Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20180926 |
|
REG | Reference to a national code |
Ref country code: BE Ref legal event code: MM Effective date: 20190228 |
|
REG | Reference to a national code |
Ref country code: IE Ref legal event code: MM4A |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20190228 Ref country code: CH Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20190228 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20190204 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: BE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20190228 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: TR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20180926 |
|
REG | Reference to a national code |
Ref country code: AT Ref legal event code: MM01 Ref document number: 1047474 Country of ref document: AT Kind code of ref document: T Effective date: 20190204 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: AT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20190204 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: MT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20180926 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: CY Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20180926 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: HU Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO Effective date: 20130204 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: MK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20180926 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R082 Ref document number: 502013011168 Country of ref document: DE Representative=s name: MEISSNER BOLTE PATENTANWAELTE RECHTSANWAELTE P, DE |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: CZ Payment date: 20230227 Year of fee payment: 12 |
|
P01 | Opt-out of the competence of the unified patent court (upc) registered |
Effective date: 20230608 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20240227 Year of fee payment: 12 Ref country code: GB Payment date: 20240222 Year of fee payment: 12 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 20240221 Year of fee payment: 12 |