DE102020108958A1 - Method for presenting a first audio signal while a second audio signal is being presented - Google Patents
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G3/00—Gain control in amplifiers or frequency changers
- H03G3/20—Automatic control
- H03G3/30—Automatic control in amplifiers having semiconductor devices
- H03G3/32—Automatic control in amplifiers having semiconductor devices the control being dependent upon ambient noise level or sound level
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
- G10L21/00—Speech or voice signal processing techniques to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
- G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G3/00—Gain control in amplifiers or frequency changers
- H03G3/20—Automatic control
- H03G3/30—Automatic control in amplifiers having semiconductor devices
- H03G3/34—Muting amplifier when no signal is present or when only weak signals are present, or caused by the presence of noise signals, e.g. squelch systems
- H03G3/342—Muting when some special characteristic of the signal is sensed which distinguishes it from noise, e.g. using speech detector
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- 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
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
- G10L21/00—Speech or voice signal processing techniques to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
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- H04R2420/00—Details of connection covered by H04R, not provided for in its groups
- H04R2420/01—Input selection or mixing for amplifiers or loudspeakers
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- H—ELECTRICITY
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- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2430/00—Signal processing covered by H04R, not provided for in its groups
- H04R2430/01—Aspects of volume control, not necessarily automatic, in sound systems
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2499/00—Aspects covered by H04R or H04S not otherwise provided for in their subgroups
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- H—ELECTRICITY
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- H04R2499/00—Aspects covered by H04R or H04S not otherwise provided for in their subgroups
- H04R2499/10—General applications
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Abstract
Verfahren zum Darbieten eines ersten Audiosignals während der Darbietung eines zweiten Audiosignals, das folgende Maßnahmen umfasst: Überwachen des Auftretens des ersten Audiosignals, Erzeugen einer ersten Signalkomponente und einer zweiten Signalkomponente aus dem zweiten Audiosignal, wobei die erste Signalkomponente Anteile direkten Schalls und die zweite Signalkomponente Anteile indirekten Schalls im zweiten Audiosignal repräsentiert, Dämpfen der Lautstärke der ersten Signalkomponente während des Auftretens des ersten Audiosignals und gleichzeitiges Darbieten des ersten Audiosignals, der zweiten Signalkomponente des zweiten Audiosignals und der gedämpften ersten Signalkomponente des zweiten Audiosignals.A method for presenting a first audio signal during the presentation of a second audio signal, comprising the following measures: monitoring the occurrence of the first audio signal, generating a first signal component and a second signal component from the second audio signal, the first signal component being proportions of direct sound and the second signal component being proportions indirect sound in the second audio signal, attenuating the volume of the first signal component during the occurrence of the first audio signal and simultaneously presenting the first audio signal, the second signal component of the second audio signal and the attenuated first signal component of the second audio signal.
Description
HINTERGRUNDBACKGROUND
Die Erfindung betrifft ein Verfahren zum Darbieten eines ersten Audiosignals während der Darbietung eines zweiten Audiosignals sowie ein Audiosystem und ein Computerprogramm zur Durchführung des Verfahrens.The invention relates to a method for presenting a first audio signal while a second audio signal is being presented, as well as an audio system and a computer program for performing the method.
Viele moderne Audiosysteme beispielsweise in Automobilen, Smartphones, intelligenten Lautsprechern, Disc-Jockey-Anlagen und Public-Address-Anlagen reduzieren automatisch die Lautstärke von Signalen mit Unterhaltungsinhalten wie etwa Musik während des Auftretens von Ankündigungssignalen wie etwa Navigationshinweisen, Klingeltönen, Warntönen oder Durchsagen. Es ist dabei wünschenswert, dass das Signal im Hintergrund nicht mehr deutlich wahrgenommen wird, um die Verständlichkeit des Signals im Vordergrund zu verbessern.Many modern audio systems, for example in automobiles, smartphones, intelligent loudspeakers, disc jockey systems and public address systems automatically reduce the volume of signals with entertainment content such as music during the appearance of announcement signals such as navigation instructions, ring tones, warning tones or announcements. It is desirable that the signal in the background is no longer clearly perceived in order to improve the intelligibility of the signal in the foreground.
ÜBERSICHTOVERVIEW
Es wird ein Verfahren zum Darbieten eines ersten Audiosignals während der Darbietung eines zweiten Audiosignals vorgeschlagen, das folgende Maßnahmen umfasst: Überwachen des Auftretens des ersten Audiosignals, Erzeugen einer ersten Signalkomponente und einer zweiten Signalkomponente aus dem zweiten Audiosignal, wobei die erste Signalkomponente Anteile direkten Schalls und die zweite Signalkomponente Anteile indirekten Schalls im zweiten Audiosignal repräsentiert, Dämpfen der Lautstärke der ersten Signalkomponente während des Auftretens des ersten Audiosignals und gleichzeitiges Darbieten des ersten Audiosignals, der zweiten Signalkomponente des zweiten Audiosignals und der gedämpften ersten Signalkomponente des zweiten Audiosignals.A method for presenting a first audio signal during the presentation of a second audio signal is proposed, which comprises the following measures: monitoring the occurrence of the first audio signal, generating a first signal component and a second signal component from the second audio signal, the first signal component being proportions of direct sound and the second signal component represents proportions of indirect sound in the second audio signal, attenuating the volume of the first signal component during the occurrence of the first audio signal and simultaneously presenting the first audio signal, the second signal component of the second audio signal and the attenuated first signal component of the second audio signal.
Außerdem wird ein Audiosystem und ein Computerprogramm zur Durchführung des Verfahrens vorgeschlagen.In addition, an audio system and a computer program for carrying out the method are proposed.
Ausgestaltungen und Weiterbildungen des Erfindungsgedankens sind Gegenstand von Unteransprüchen.Refinements and developments of the inventive concept are the subject of subclaims.
FigurenlisteFigure list
Die Erfindung wird nachfolgend anhand der in den Figuren (FIG.) der Zeichnung dargestellten Ausführungsbeispiele näher erläutert, wobei identische oder ähnliche Elemente mit denselben Bezugszeichen versehen sind.
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1 zeigt anhand eines Signalflussplanes ein erstes beispielhaftes Verfahren, bei dem ein erstes Audiosignal während der Darbietung eines zweiten Audiosignals dargeboten wird. -
2 zeigt anhand eines Signalflussplanes ein beispielhaftes Verfahren zur Separierung von erster und zweiter Signalkomponente des zweiten Audiosignals. -
3 zeigt in einem Diagramm den Verlauf eines das Auftreten des ersten Audiosignals anzeigenden Detektionssignals über der Zeit in Relation zu einem daraus korrelierenden Verlauf der Verstärkung / Dämpfung des zweiten Audiosignals über der Zeit t. -
4 zeigt anhand eines Signalflussplanes ein zweites beispielhaftes Verfahren, bei dem ein erstes Audiosignal während der Darbietung eines zweiten Audiosignals dargeboten wird.
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1 shows a first exemplary method using a signal flow diagram, in which a first audio signal is presented during the presentation of a second audio signal. -
2 shows an exemplary method for separating first and second signal components of the second audio signal based on a signal flow diagram. -
3 shows in a diagram the curve of a detection signal indicating the occurrence of the first audio signal over time in relation to a curve of the amplification / attenuation of the second audio signal that correlates therefrom over time t. -
4th shows a second exemplary method, based on a signal flow diagram, in which a first audio signal is presented during the presentation of a second audio signal.
DETAILED DESCRIPTIONDETAILED DESCRIPTION
Mit dem Begriff „Halligkeit“ wird die Empfindung eines Hörereignisses beschrieben, bei dem neben direkten Schallanteilen (Direktschall) auch reflektierte, also indirekte Schallanteile (Raumschall) vorhanden sind, die aber nicht als Wiederholung des Direktschalls empfunden werden wie dies im Gegensatz dazu etwa bei Echos der Fall ist. Direktschall ist Schall der auf direktem Wege, also unreflektiert von der Schallquelle zum Empfänger übertragen wird, während Raumschall derjenige Schall ist, der auf indirektem Wege, also über Reflexionen an Raumwänden oder sonstigen Objekten zum Empfänger gelangt. Aufgrund des längeren Übertragungsweges treffen indirekte Schallanteile gegenüber direkten Schallanteilen verzögert beim Empfänger ein, was dann vom Empfänger je nach Ausgestaltung als Hall (Nachhall) oder Echo wahrgenommen werden kann. In diesem Sinne wird bei in Räumen aufgezeichneten und/oder bei künstlich verhallten Audiosignalen zwischen zwei Signalkomponenten unterschieden, also zwischen direkten Schallanteilen, die beispielsweise eine erste Signalkomponente bilden, und indirekten Schallanteilen, die beispielsweise einer zweiten Signalkomponente zugerechnet werden. Die erste Signalkomponente, auch als direkte, trockene oder nicht-hallige Signalkomponente bekannt, ist das ursprünglich abgestrahlte Signal (ggf. gefiltert mit der Übertragungsfunktion des jeweiligen Übertragungsweges). Die zweite Signalkomponente, auch als indirekte, nasse oder hallige Signalkomponente oder auch als Umgebungssignalkomponente bekannt, umfasst alle durch den Raum reflektierten oder in sonstiger Weise mit den Raum interagierenden Signalanteile (ggf. gefiltert mit der Übertragungsfunktion des jeweiligen Übertragungsweges). Beispielsweise kann ein Stereo-Audiosignal mittels eines 5.1-System so abgestrahlt werden, dass die ersten Signalkomponenten mit den vorderen Lautsprechern und die zweiten Signalkomponenten mit den hinteren Lautsprechern wiedergegeben werden. In anderen Fällen können die ersten Signalkomponenten und die zweiten Signalkomponenten des Stereo-Audiosignals gemeinsam über die Lautsprecher eines konventionellen Stereo-Systems wiedergegeben werden.The term "reverberation" describes the sensation of an auditory event in which, in addition to direct sound components (direct sound), there are also reflected, i.e. indirect sound components (room sound), which, however, are not perceived as a repetition of the direct sound, as is the case with echoes, for example the case is. Direct sound is sound that is transmitted directly, i.e. unreflected, from the sound source to the receiver, while room sound is that sound that arrives at the receiver indirectly, i.e. via reflections on room walls or other objects. Due to the longer transmission path, indirect sound components reach the receiver with a delay compared to direct sound components, which can then be perceived by the receiver as reverberation or echo, depending on the configuration. In this sense, in the case of audio signals recorded in rooms and / or artificially reverberated audio signals, a distinction is made between two signal components, i.e. between direct sound components which, for example, form a first signal component, and indirect sound components which, for example, are assigned to a second signal component. The first signal component, also known as a direct, dry or non-reverberant signal component, is the originally emitted signal (if necessary, filtered with the transfer function of the respective transmission path). The second signal component, also known as an indirect, wet or reverberant signal component or as an ambient signal component, comprises all signal components reflected by the room or interacting with the room in some other way (if necessary, filtered with the transfer function of the respective transmission path). For example, a stereo audio signal can be emitted by means of a 5.1 system in such a way that the first signal components are reproduced with the front loudspeakers and the second signal components are reproduced with the rear loudspeakers. In other cases, the first signal components and the second signal components of the Stereo audio signals can be reproduced together via the loudspeakers of a conventional stereo system.
In
In Prozedur
In der Prozedur
Die in Verbindung mit
Unter erneuter Bezugnahme auf
Die Dämpfung der zweiten Signalkomponente
Optional (wie in
Dabei wird in Prozedur
Der in
Bei einer optionalen Ausführungsform (wie in
Je nach Art der gewünschten Weiterverarbeitung bzw. Abstrahlung der zweiten und ersten Signalkomponenten können die Signalkomponenten voneinander getrennt (in
Das Detektionssignal DS kann wie in
Die oben beschriebenen Methoden können zum Beispiel mittels eines Systems mit festverdrahteter Logik, einem Prozessor, einem Controller oder einer beliebigen Kombination dessen und/oder eines Programmes zur Ausführung durch einen Prozessor oder Controller implementiert werden.The methods described above can be implemented, for example, using a hardwired logic system, a processor, a controller, or any combination thereof and / or a program for execution by a processor or controller.
Mit den beschriebenen Verfahren kann folglich erreicht werden, dass das Signal im Hintergrund nicht mehr deutlich wahrgenommen wird, wodurch die Verständlichkeit des Signals im Vordergrund verbessert wird. Hierzu wird das für die Hintergrunddarbietung vorgesehene Signal verhallt. Vorteil ist unter Anderem, dass das für die Hintergrunddarbietung vorgesehene Signal dann nicht so leise sein muss und somit beispielsweise die Musik immer noch wahrgenommen werden kann, ohne die Verständlichkeit des für die Vordergrunddarbietung vorgesehenen Signals zu stören.With the described method it can consequently be achieved that the signal in the background is no longer clearly perceived, as a result of which the intelligibility of the signal in the foreground is improved. For this purpose, the signal provided for the background presentation is reverberated. One of the advantages is that the signal provided for the background presentation then does not have to be so quiet and thus, for example, the music can still be perceived without disturbing the intelligibility of the signal provided for the foreground presentation.
ZITATE ENTHALTEN IN DER BESCHREIBUNGQUOTES INCLUDED IN THE DESCRIPTION
Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list of the documents listed by the applicant was generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.
Zitierte PatentliteraturPatent literature cited
- EP 3573058 A1 [0012]EP 3573058 A1 [0012]
- WO 2014135235 A1 [0012]WO 2014135235 A1 [0012]
- US 2009092258 [0012]US 2009092258 [0012]
- US 2012063608 A1 [0012]US 2012063608 A1 [0012]
- WO 2017160294 A1 [0012]WO 2017160294 A1 [0012]
- US 2013208895 A1 [0012]US 2013208895 A1 [0012]
Claims (10)
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Citations (6)
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US20090092258A1 (en) | 2007-10-04 | 2009-04-09 | Creative Technology Ltd | Correlation-based method for ambience extraction from two-channel audio signals |
US20120063608A1 (en) | 2006-09-20 | 2012-03-15 | Harman International Industries, Incorporated | System for extraction of reverberant content of an audio signal |
US20130208895A1 (en) | 2012-02-15 | 2013-08-15 | Harman International Industries, Incorporated | Audio surround processing system |
WO2014135235A1 (en) | 2013-03-05 | 2014-09-12 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Apparatus and method for multichannel direct-ambient decomposition for audio signal processing |
WO2017160294A1 (en) | 2016-03-17 | 2017-09-21 | Nuance Communications, Inc. | Spectral estimation of room acoustic parameters |
EP3573058A1 (en) | 2018-05-23 | 2019-11-27 | Harman Becker Automotive Systems GmbH | Dry sound and ambient sound separation |
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2020
- 2020-03-31 DE DE102020108958.9A patent/DE102020108958A1/en active Pending
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20120063608A1 (en) | 2006-09-20 | 2012-03-15 | Harman International Industries, Incorporated | System for extraction of reverberant content of an audio signal |
US20090092258A1 (en) | 2007-10-04 | 2009-04-09 | Creative Technology Ltd | Correlation-based method for ambience extraction from two-channel audio signals |
US20130208895A1 (en) | 2012-02-15 | 2013-08-15 | Harman International Industries, Incorporated | Audio surround processing system |
WO2014135235A1 (en) | 2013-03-05 | 2014-09-12 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Apparatus and method for multichannel direct-ambient decomposition for audio signal processing |
WO2017160294A1 (en) | 2016-03-17 | 2017-09-21 | Nuance Communications, Inc. | Spectral estimation of room acoustic parameters |
EP3573058A1 (en) | 2018-05-23 | 2019-11-27 | Harman Becker Automotive Systems GmbH | Dry sound and ambient sound separation |
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