EP3741136B1 - Procédé d'émission d'un signal audio reproduisant un morceau de musique dans un espace intérieur par l'intermédiaire d'un dispositif d'émission - Google Patents

Procédé d'émission d'un signal audio reproduisant un morceau de musique dans un espace intérieur par l'intermédiaire d'un dispositif d'émission Download PDF

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EP3741136B1
EP3741136B1 EP18701148.1A EP18701148A EP3741136B1 EP 3741136 B1 EP3741136 B1 EP 3741136B1 EP 18701148 A EP18701148 A EP 18701148A EP 3741136 B1 EP3741136 B1 EP 3741136B1
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audio signal
main voice
audio
output
signal portion
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German (de)
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EP3741136A1 (fr
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Daniel Kotulla
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Ask Industries GmbH
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Ask Industries GmbH
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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
    • G10L25/00—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00
    • G10L25/78—Detection of presence or absence of voice signals
    • G10L25/81—Detection of presence or absence of voice signals for discriminating voice from music
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10H—ELECTROPHONIC MUSICAL INSTRUMENTS; INSTRUMENTS IN WHICH THE TONES ARE GENERATED BY ELECTROMECHANICAL MEANS OR ELECTRONIC GENERATORS, OR IN WHICH THE TONES ARE SYNTHESISED FROM A DATA STORE
    • G10H1/00—Details of electrophonic musical instruments
    • G10H1/36—Accompaniment arrangements
    • G10H1/361—Recording/reproducing of accompaniment for use with an external source, e.g. karaoke systems
    • 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
    • G10L25/00—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00
    • G10L25/48—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 specially adapted for particular use
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R5/00—Stereophonic arrangements
    • H04R5/04—Circuit arrangements, e.g. for selective connection of amplifier inputs/outputs to loudspeakers, for loudspeaker detection, or for adaptation of settings to personal preferences or hearing impairments
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10H—ELECTROPHONIC MUSICAL INSTRUMENTS; INSTRUMENTS IN WHICH THE TONES ARE GENERATED BY ELECTROMECHANICAL MEANS OR ELECTRONIC GENERATORS, OR IN WHICH THE TONES ARE SYNTHESISED FROM A DATA STORE
    • G10H2210/00—Aspects or methods of musical processing having intrinsic musical character, i.e. involving musical theory or musical parameters or relying on musical knowledge, as applied in electrophonic musical tools or instruments
    • G10H2210/155—Musical effects
    • G10H2210/265—Acoustic effect simulation, i.e. volume, spatial, resonance or reverberation effects added to a musical sound, usually by appropriate filtering or delays
    • G10H2210/295—Spatial effects, musical uses of multiple audio channels, e.g. stereo
    • G10H2210/305—Source positioning in a soundscape, e.g. instrument positioning on a virtual soundstage, stereo panning or related delay or reverberation changes; Changing the stereo width of a musical source
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2420/00—Details of connection covered by H04R, not provided for in its groups
    • H04R2420/01—Input selection or mixing for amplifiers or loudspeakers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • 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
    • H04R2430/03—Synergistic effects of band splitting and sub-band processing
    • 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
    • H04R2499/10—General applications
    • H04R2499/13—Acoustic transducers and sound field adaptation in vehicles
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • 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

Definitions

  • the invention relates to a method for outputting an audio signal representing at least a part of a piece of music containing at least one main voice, in particular a singing voice, into at least one interior space forming part of a passenger compartment of a motor vehicle via an audio output device comprising a left and a right audio output channel.
  • Corresponding methods for outputting an audio signal representing at least a part of a piece of music containing at least one main voice, in particular a singing voice, into at least one interior space forming part of a passenger compartment of a motor vehicle via an audio output device comprising a left and a right audio output channel are known in principle and are implemented in modern motor vehicles by means of audio output devices configured accordingly in terms of hardware and/or software.
  • the at least temporary attenuation or elimination of the audio signal portion representing the main voice may, for example, be desirable in order to improve the perception of other acoustic conditions in a certain acoustic situation; for example, the acoustic perception of speech, i.e., a conversation, within the passenger compartment can be improved by appropriate attenuation or elimination of the audio signal portion representing the main voice.
  • at least temporary attenuation or elimination of the audio signal portion representing the main voice may be desirable in order to implement a karaoke playback mode.
  • WO 2006/037197 A2 reveals a karaoke system that uses a pre-produced audio signal.
  • US 4 953 212 A1 discloses a principle for canceling a lead voice from a stereo audio signal.
  • US2012/0114142 A1 shows a similar principle for eliminating a lead voice from a stereo audio signal.
  • the invention is therefore based on the object of providing an improved method for issuing of an audio signal representing at least a part of a piece of music containing at least one main voice, in particular a singing voice, into at least one interior space forming part of a passenger compartment of a motor vehicle via an audio output device comprising a left and a right audio output channel.
  • the method described herein serves to output at least one audio signal in at least one interior space forming part of a passenger compartment of a motor vehicle via an audio output device comprising a left and a right audio output channel.
  • the audio signal that can be output or is output according to the method represents at least part of a piece of music that contains at least one main voice, i.e. typically a (human) singing voice.
  • the audio signal that can be output or is output according to the method is therefore a piece of music that contains a main voice; the audio signal can therefore also be referred to or considered as a music signal.
  • the audio signal typically contains several audio signal components that can be distinguished from one another, for example by amplitude and/or frequency or corresponding amplitude and/or frequency curves.
  • At least one audio signal component contains the main voice, i.e. typically a singing voice, of the piece of music acoustically represented by the audio signal.
  • the audio signal component containing the main voice differs from the other or remaining audio signal components of the audio signal, for example by its amplitude and/or frequency or its amplitude and/or frequency curve.
  • the audio signal contains, as mentioned, further audio signal components; such a further audio signal component can, for example, contain: at least one secondary voice that is subordinate to the main voice, or at least one musical instrument, i.e.
  • a harmony instrument which depending on the type of piece of music can be a guitar, for example, or a rhythm instrument, which depending on the type of piece of music can be a percussion instrument, for example; or a beat, other noises, etc.
  • the number and type of audio signal components of the audio signal are therefore determined in particular by the type of piece of music, ie whether it is, for example, a piece of music from the field of pop music or a piece of music from the field of classical music.
  • the audio signal that can be output or is output according to the method is, as mentioned, output via an audio output device into an interior that forms part of a passenger compartment of a motor vehicle.
  • the audio output device comprises a left and a right audio output channel; each audio output channel is typically formed by a loudspeaker or comprises at least one such loudspeaker.
  • the audio output device is typically installed on the motor vehicle side.
  • the two audio output channels of the audio output device are therefore typically arranged in a passenger compartment of a motor vehicle, so that the signals that can be output via these can be output into the passenger compartment of the motor vehicle.
  • an audio signal is provided that represents at least part of a piece of music containing at least one main voice.
  • the audio signal is a stereo signal.
  • the audio signal can be provided in various ways.
  • the audio signal can be provided via a sound carrier, e.g. a CD, a data carrier, which may be portable, e.g. a hard disk, USB stick, etc., or a global or local data network, e.g. the Internet, or a global or local data connection, such as a Bluetooth connection.
  • an audio signal component or the audio signal component containing the at least one main voice is extracted from the audio signal.
  • the extraction serves to identify the audio signal component containing the at least one main voice within the audio signal and to separate the audio signal component containing the at least one main voice from the audio signal.
  • the audio signal component containing the at least one main voice is extracted, for example, using an extraction device implemented in hardware and/or software, which is set up to extract an audio signal representing the audio signal component containing the at least one main voice of a piece of music containing at least one main voice from the audio signal; a corresponding extraction device can form a functional component of a device set up to carry out the method.
  • the product obtained by extraction is at least one main voice is attenuated.
  • the attenuation of the audio signal portion containing the at least one main voice obtained by appropriate extraction is carried out in particular by reducing the dynamics or volume of the audio signal portion containing the at least one main voice - this can be both the absolute dynamics or volume of the audio signal portion containing the at least one main voice and the relative dynamics or volume of the audio signal portion containing the at least one main voice, i.e. the dynamics or volume of the audio signal portion containing the at least one main voice compared to other or remaining audio signal portions of the audio signal.
  • the audio signal portion containing the at least one main voice can also be completely eliminated by appropriate attenuation; the attenuation of the audio signal portion containing the at least one main voice can thus be carried out in such a way that the audio signal portion containing the at least one main voice is completely removed from the audio signal, i.e. the attenuation can be carried out down to "zero".
  • the attenuation of the audio signal portion containing the at least one main voice is carried out, for example, by means of an attenuation device implemented in hardware and/or software, which is designed to attenuate the audio signal portion containing the at least one main voice; a corresponding attenuation device can form a functional component of a device designed to carry out the method.
  • the audio signal is output via the left and right audio output channels of the audio output device, with the audio signal portion containing the at least one main voice being output in a correspondingly attenuated manner or - because it is cancelled - not being output.
  • the audio signal is output, as mentioned, typically in an interior that forms part of a passenger compartment of a motor vehicle - to hear or acoustically perceive the respective piece of music with the audio signal portion containing the at least one main voice being attenuated or cancelled, i.e. with the main voice being attenuated or cancelled, in a technically uncomplicated manner, particularly with regard to the hardware and/or software resources required for this purpose.
  • the audio signal portion containing the at least one main voice is extracted by dividing the audio signal provided into a plurality of audio signal portions, wherein an audio signal portion obtained by dividing the audio signal contains the at least one main voice.
  • the audio signal can thus be divided into a plurality of audio signal portions, wherein an audio signal portion contains the at least one main voice.
  • the audio signal is analyzed using suitable analysis devices or algorithms with regard to at least the audio signal portion containing the at least one main voice and divided accordingly.
  • the analysis of the audio signal can be based on certain predefinable or predefined acoustic properties, i.e. e.g. amplitude(s) and/or frequency(s), of audio signal portions containing main voices, which are stored, for example, in a storage device (data storage device).
  • the analysis of the audio signal can therefore be carried out, for example, by comparing predefinable or predefined acoustic properties, i.e. e.g. amplitude(s) and frequency(s), of audio signal portions containing main voices with the audio signal.
  • the audio signal can also be divided, whereby a center audio signal portion is obtained, which typically contains the at least one main voice.
  • the division of the provided audio signal into a plurality of audio signal components can be carried out by a division device which is configured to divide the provided audio signal into a plurality of audio signal components; a corresponding division device can form a functional component of a device configured to carry out the method.
  • the audio signal provided can be divided in such a way that a center audio signal component is obtained.
  • the audio signal provided can be divided in particular into a center audio signal component, a left audio signal component, which is perceived by the listener in particular to the left of the main voice or the center audio signal component, and a right audio signal component, which is perceived by the listener in particular to the right of the main voice or the center audio signal component.
  • the center audio signal component is the audio signal component which corresponds to an output direction or position perceived by a listener in the center when the audio signal is output via an audio output device comprising two audio output channels
  • a left audio signal component is the audio signal component which corresponds to an output direction or position perceived by a listener (more) to the left (compared to a center audio signal component) when the audio signal is output via an audio output device comprising two audio output channels
  • a right audio signal component is the audio signal component which corresponds to an output direction or position perceived by a listener (more) to the right (compared to a center audio signal component) when the audio signal is output via an audio output device comprising two audio output channels.
  • the division of the audio signal carried out by means of suitable division devices or algorithms can therefore provide (exactly) three audio signal components according to the method; thus, the audio signal can be divided into (exactly) three Audio signal components, namely a left audio signal component, which contains all or only components of the audio signal that are perceived to the left of the center of the output or which are located to the left of the center of the output, a right audio signal component, which contains all or only components of the audio signal that are perceived to the right of the center of the output or which are located to the right of the center of the output, and a center audio signal component, which contains all or only components of the audio signal that are perceived in the center of the output or which are located in the center of the output.
  • a left audio signal component which contains all or only components of the audio signal that are perceived to the left of the center of the output or which are located to the left of the center of the output
  • a right audio signal component which contains all or only components of the audio signal that are perceived to the right of the center of the output or which are
  • the center audio signal component typically contains at least one main voice; by obtaining the center audio signal component by appropriately dividing the audio signal, the audio signal component containing at least one main voice can therefore typically be obtained.
  • Each audio signal component obtained from the division of the audio signal can, in principle, be mixed onto a specific audio output channel of the audio output device or output via a specific audio output channel of the audio output device.
  • each audio signal component can be assigned to one of the two audio output channels of the audio output device, via which the respective audio signal component is subsequently output.
  • the left and right audio signal components are typically mixed onto the right and/or left audio output channel of the audio output device when the audio signal is output; the left audio signal component is typically output via the left audio output channel of the audio output device and the right audio signal component is output via the right audio output channel of the audio output device when the audio signal is output.
  • the center audio signal component which, as mentioned, typically contains at least one main voice, can, depending on the degree of attenuation or cancellation, e.g. B. It can be attenuated and mixed or output proportionally divided onto or via one or both audio output channels, or it can be (completely) cancelled and not mixed or output.
  • the division of the provided audio signal into respective audio signal components can be carried out by means of a source separation device.
  • a corresponding source separation device can be implemented, for example, by a source separation algorithm.
  • a suitable method for source separation or a suitable source separation algorithm is described, for example, in the German patent EN 10 2012 025 016 B3 described, to the disclosure content of which express reference is made.
  • the attenuation of the audio signal component containing the at least one main voice is carried out by filtering the audio signal component from the audio signal using a filter device, in particular a blocking filter device, preferably a band-stop filter device.
  • a filter device comprising an upper and a lower limit frequency is used here.
  • the upper and lower limit frequencies of the filter device are selected such that frequency components of the main voice to be filtered out are filtered out.
  • a filter device can therefore be used which is set up to filter out frequency components of the main voice to be filtered out based on corresponding upper and lower limit frequencies.
  • the device is designed to carry out the method described herein; all statements in connection with the method described herein apply analogously to the device.
  • the extraction device is therefore designed to divide a provided audio signal into a plurality of acoustic audio signal components, wherein an audio signal component obtained by dividing the audio signal contains the at least one main voice.
  • the attenuation device is designed as a filter device, in particular a blocking filter device, preferably a band-stop filter device, or comprises at least one such.
  • the filter device comprises an upper and a lower limit frequency, wherein the upper and lower limit frequencies are selected such that frequency components of the main voice to be filtered out are filtered out.
  • the device can further comprise an output device for outputting text information, in particular designed as a display device, i.e. e.g. as a display, or comprising such an output device.
  • the output of text information can take place simultaneously with the output of the audio signal.
  • the text information can be the text that the weakened or deleted main voice contains or would contain.
  • the invention also relates to a motor vehicle, in particular a passenger car, which comprises a corresponding device. Therefore, all statements in connection with the method and the device described here apply analogously to the motor vehicle.
  • the only figure shows a schematic diagram of a device 1 according to an embodiment.
  • the device 1 is designed to output an audio signal AS representing at least a part of a piece of music containing at least one main voice, in particular a singing voice, into an interior 4 forming part of a passenger compartment 2 of a motor vehicle 3 via an audio output device 7 comprising a left audio output channel 5 and a right audio output channel 6.
  • the device 1 comprises as functional components at least one hardware and/or software-implemented extraction device 8, a hardware and/or software-implemented attenuation device 9, a hardware and/or software-implemented mixing device 10 and the output device 7 comprising the left and right audio output channels 5, 6 (loudspeakers).
  • the extraction device 8 is designed to extract an audio signal AS representing the audio signal component AS.2 containing at least one main voice of a piece of music containing at least one main voice from the audio signal AS.
  • the attenuation device 9 is designed to attenuate the audio signal component AS.2 containing at least one main voice.
  • the mixing device 10 is designed to Mixing of respective audio signal components AS.1 - AS.3 obtained by extraction onto the audio output channels 5, 6 of the audio output device 7.
  • the device 1 can further comprise an output device (not shown) for outputting text information, in particular designed as a display device, i.e. e.g. as a display, or comprising such an output device.
  • the output of text information can take place simultaneously with the output of the audio signal AS.
  • the text information can be the text that the attenuated or eliminated main voice contains or would contain.
  • the device 1 is designed to carry out a method for outputting an audio signal AS into an interior 4 forming part of a passenger compartment 2 of a motor vehicle 3 via an audio output device 7 comprising a left and a right audio output channel 5, 6.
  • the audio signal AS that can be output or is output according to the method represents part of a piece of music that contains at least one main voice, i.e. typically a (human) singing voice.
  • the audio signal AS is therefore a piece of music that contains a main voice; the audio signal AS can therefore also be referred to or considered as a music signal.
  • the audio signal AS contains several audio signal components AS.1 - AS.3 which can be distinguished from one another, for example by amplitude and/or frequency or corresponding amplitude and/or frequency curves.
  • At least one audio signal component AS.2 contains the main voice, i.e. typically a singing voice, of the piece of music acoustically represented by the audio signal AS.
  • the audio signal AS contains further audio signal components AS.1, AS.3, namely, for example: at least one secondary voice which is subordinate to the main voice, or at least one musical instrument, i.e.
  • the number and type of audio signal components AS.1 - AS.3 of the audio signal AS are therefore determined in particular by the type of piece of music, ie whether it is, for example, a piece of music from the field of pop music or a piece of music from the field of classical music.
  • the aim of the method is to attenuate or (completely) eliminate an audio signal component AS.2 containing a main voice in a relatively inexpensive manner, particularly with regard to the hardware and/or software resources required for this purpose.
  • the method provides for the following steps:
  • an audio signal AS representing a piece of music containing a main voice is provided.
  • the audio signal AS is a stereo signal.
  • the audio signal AS can be provided in various ways.
  • the audio signal AS can be provided via a sound carrier, e.g. a CD, a data carrier, which may be portable, e.g. a hard disk, USB stick, etc., or a global or local data network, e.g. the Internet, or a global or local data connection, such as a Bluetooth connection.
  • the audio signal portion AS.2 containing the main voice is extracted from the audio signal AS.
  • the extraction serves to identify the audio signal portion AS.2 containing the at least one main voice within the audio signal AS and to separate the audio signal portion AS.2 containing the main voice from the audio signal AS.
  • the audio signal portion AS.2 containing the main voice is extracted using the extraction device 8.
  • the audio signal component AS.2 containing the main voice is extracted by splitting the audio signal AS into a plurality of audio signal components AS.1 - AS.3, with an audio signal component AS.2 obtained by splitting the audio signal AS containing the main voice.
  • the audio signal AS is then split into a plurality of audio signal components AS.1 - AS.3, with an audio signal component AS.2 containing at least one main voice.
  • the audio signal AS can be analyzed using analysis devices or algorithms with regard to at least the audio signal component AS.2 containing the main voice and divided accordingly.
  • the analysis of the audio signal AS can be based on certain predefinable or predefined acoustic properties, e.g.
  • amplitude(s) and/or frequency(s), of audio signal components AS.1 - AS.3 containing main voices which are stored, for example, in a storage device (data storage) not shown in the figure.
  • the analysis of the audio signal AS can therefore be carried out, for example, using a processor or a combination of both. This can be done, for example, by comparing predefinable or predefined acoustic properties, such as amplitude(s) and frequency(s), of audio signal components containing main voices with the audio signal AS.
  • a center audio signal component AS.2 By dividing the audio signal AS, a center audio signal component AS.2 can be obtained, which typically contains the main voice.
  • the audio signal AS is divided into several audio signal components AS.1 - AS.3 by a division device 11 associated with or assigned to the extraction device 8, which is implemented in hardware and/or software and is set up to divide the audio signal AS into several audio signal components AS.1 - AS.3.
  • the division device 11 forms a further functional component of the device 1.
  • the audio signal AS can be divided by means of the division device 11 into a center audio signal component AS.2, a left audio signal component AS.1, which is perceived by the listener in particular to the left of the main voice or the center audio signal component AS.2, and a right audio signal component AS.3, which is perceived by the listener in particular to the right of the main voice or the center audio signal component AS.2.
  • the division of the audio signal AS carried out by means of suitable division devices or algorithms can thus deliver (exactly) three audio signal components AS.1 - AS.3; thus, the audio signal AS can be divided into (exactly) three audio signal components AS.1 - AS.3, namely a left audio signal component AS.1, which contains all or only components of the audio signal AS that are perceived to the left of the center of the output or which are located to the left of the center of the output, a right audio signal component AS.3, which contains all or only components of the audio signal AS that are perceived to the right of the center of the output or which are located to the right of the center of the output, and a center audio signal component AS.2, which contains all or only components of the audio signal AS that are perceived in the center of the output or which are located in the center of the output.
  • a left audio signal component AS.1 which contains all or only components of the audio signal AS that are perceived to the left of the center of the output or which are located to the left of the center of the output
  • the division of the provided audio signal AS into respective audio signal components AS.1 - AS.3 can be carried out by means of a source separation device (not shown) associated with or assigned to the division device.
  • a corresponding source separation device can be implemented, for example, by a source separation algorithm.
  • a suitable method for source separation or a suitable source separation algorithm is described, for example, in the German patent EN 10 2012 025 016 B3 described.
  • the audio signal component AS.2 containing the main voice obtained by extraction or division, is attenuated.
  • the attenuation of the audio signal component AS.2 containing the main voice is carried out in particular by reducing the dynamics or volume of the main voice. containing the audio signal component AS.2.
  • the audio signal component AS.2 containing the main voice can also be completely eliminated by appropriate attenuation; the attenuation of the audio signal component AS.2 containing the main voice can thus be carried out in such a way that the audio signal component AS.2 containing the main voice is completely removed from the audio signal AS.
  • the attenuation of the audio signal component AS.2 containing the main voice, i.e. the center audio signal component AS.2, is carried out by filtering the audio signal component AS.2 by means of a filter device 12 which is associated or assigned to the attenuation device 9 and has an upper and a lower limit frequency and is implemented in hardware and/or software.
  • the filter device 12 can be designed as a blocking filter device, preferably as a band-stop filter device.
  • the upper and lower limit frequencies of the filter device 12 are selected such that frequency components of the main voice to be filtered out are filtered out.
  • Each audio signal component AS.1 - AS.3 obtained from the division of the audio signal AS can, in principle, be mixed by means of the mixing device 10 onto a specific audio output channel 5, 6 of the audio output device 7 or output via a specific audio output channel 5, 6 of the audio output device 7.
  • the left and right audio signal components AS.1, AS.3 are mixed by means of the mixing device 10 as part of the output of the audio signal AS onto the right and/or left audio output channel 5, 6 of the audio output device 7; the left audio signal component AS.1 is typically output via the left audio output channel 5 and the right audio signal component AS.3 is output via the right audio output channel 6.
  • center audio signal component AS.2 containing the main voice depending on the degree of attenuation or cancellation, this can, for example, be B. attenuated, proportionally divided, can be mixed or output on or via one or both audio output channels 5, 6, or (completely) canceled, cannot be mixed or output.
  • the audio signal AS is output via the left and right audio output channels 5, 6, whereby the audio signal portion AS.2 containing the main voice is output in a correspondingly attenuated manner or - because it is cancelled - is not output.

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  • Acoustics & Sound (AREA)
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  • Human Computer Interaction (AREA)
  • Stereophonic System (AREA)
  • Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
  • Circuit For Audible Band Transducer (AREA)

Claims (7)

  1. Procédure d'émission d'au moins une partie d'au moins une voix principale, en particulier la voix chantante, signal audio (AS) sous la forme d'un signal stéréo dans une partie d'une cabine d'habitacle (2) d'un véhicule à moteur (3), par l'intermédiaire d'un système de sortie audio de gauche et d'un canal de sortie audio droit (5, 6), comprenant les étapes suivantes:
    - Fournir un signal audio (AS) représentant au moins une partie d'un morceau de musique contenant au moins une voix principale;
    - Extraire une partie du signal audio (AS.2) contenant au moins une voix principale du signal audio (AS) du signal audio (AS) du signal audio (AS), l'extraction de la part du signal audio contenant au moins une voix principale est effectuée en fractionnant le signal audio fourni en plusieurs parties de signaux audio, une partie du signal audio obtenue par division du signal audio contenant au moins une voix principale;
    - Atténuer la proportion de signaux audio contenant au moins une voix principale (AS.2),
    - Sortie du signal audio via les canaux de sortie audio gauche et droit (5, 6) du dispositif de sortie audio (7), en émettant le signal audio contenant au moins une voix principale (AS.2), dans lequel:
    l'affaiblissement de la proportion de signaux audio contenant au moins une voix principale (AS.2) en filtrant le signal audio à partir du signal audio à l'aide d'un dispositif de filtrage (12), en particulier d'un dispositif de filtrage de blocage de bande, en utilisant un dispositif de filtrage de la limite supérieure et une fréquence limite inférieure (12), en choisissant les fréquences limites supérieures et inférieures du dispositif de filtrage (12) de manière à filtrer les fractions de fréquence de la voix principale à filtrer.
  2. Procédé selon la revendication 1, dans lequel le signal audio fourni (AS) est divisé en une partie du signal audio central (AS.2), une part de signal audio gauche perçue (AS.1), en particulier du côté auditif à gauche de la voix principale ou de la partie du signal audio central (AS.2), et une part de signal audio droite perçue (AS.3), en particulier du côté auditif de la voix principale ou de la partie du signal audio central (AS.2).
  3. Procédé selon la revendication 2, dans lequel la partie du signal audio central (AS.2) contient au moins une voix principale.
  4. Procédé selon la revendication 2 ou 3, dans lequel la partie gauche du signal audio (AS.1) est émise par le canal de sortie audio gauche (5) du dispositif de sortie audio (7) et où la partie droite du signal audio (AS.3) est émise par le canal de sortie audio droit (6) du dispositif de sortie audio (7).
  5. Procédé selon l'une des revendications précédentes, dans lequel la division du signal audio fourni (AS) en plusieurs parties de signaux audio (AS.1 - AS.3) est effectuée par l'intermédiaire d'un dispositif de séparation de source.
  6. Dispositif (1) pour émettre un signal audio (AS) représentant une partie d'au moins une voix principale, en particulier la voix chanteuse, sous la forme d'un signal stéréo dans une pièce d'habitacle (2) d'un véhicule à moteur (3), par l'intermédiaire d'un système de sortie audio de gauche et d'un canal de sortie audio (5, 6), comprenant:
    - un dispositif d'extraction (8) conçu pour extraire un signal audio (AS.2) contenant au moins une voix principale (AS.2) d'un signal audio (AS) représentant au moins une voix principale (AS) à partir du signal audio (AS), le dispositif d'extraction (8) pour diviser un signal audio (AS) en plusieurs parties de signaux audio (AS.1 - AS.3), avec une part de signal audio (AS.2) obtenue par division du signal audio (AS.2) contenant au moins une voix principale;
    - une direction d'atténuation (9) conçue pour atténuer la proportion de signaux audio contenant au moins une voix principale (AS.2), la direction d'atténuation (9) étant formée en tant que dispositif de filtrage (12), en particulier un dispositif de filtre de verrouillage, de préférence un dispositif de filtrage de bande, ou au moins une autre, le dispositif de filtrage (12) comprenant une fréquence limite supérieure et inférieure, les fréquences limites supérieures et inférieures étant choisies de telle sorte que les fractions de fréquence de la voix principale à filtrer soient filtrées;
    - un dispositif de sortie audio composé de deux canaux de sortie audio (5, 6) (7), qui est configuré pour émettre le signal audio (AS) via les canaux de sortie audio gauche et/ou droit (5, 6) de l'appareil de sortie audio (7), en diminuant la part de signal audio contenant au moins une voix principale (AS.2) du signal audio (AS).
  7. Véhicule à moteur (3), comprenant un dispositif (1) selon la revendication 6.
EP18701148.1A 2018-01-18 2018-01-18 Procédé d'émission d'un signal audio reproduisant un morceau de musique dans un espace intérieur par l'intermédiaire d'un dispositif d'émission Active EP3741136B1 (fr)

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JP2829044B2 (ja) * 1988-11-29 1998-11-25 パイオニア株式会社 オートボイスチェンジ装置
US6405163B1 (en) * 1999-09-27 2002-06-11 Creative Technology Ltd. Process for removing voice from stereo recordings
CN1180399C (zh) * 2000-09-04 2004-12-15 华邦电子股份有限公司 改变声音声调及减少其噪声的装置
EP1803114A2 (fr) * 2004-10-01 2007-07-04 Audiobrax Indústria E Comércio De Produtos Eletrônicos S.A. Dispositif rythmique servant a produire et a jouer des sons, a realiser un accompagnement et a evaluer la performance de l'utilisateur
BE1016226A3 (nl) * 2004-10-06 2006-05-02 Coopman Rudi Omer Woning, meer speciaal een noodwoning.
CN101154375B (zh) * 2006-09-25 2012-07-25 蔡本伟 卡拉ok形式音频修正及处理系统
WO2009128078A1 (fr) * 2008-04-17 2009-10-22 Waves Audio Ltd. Filtre non linéaire pour la séparation des sons centraux dans les signaux audio stéréophoniques
JP5365380B2 (ja) * 2009-07-07 2013-12-11 ソニー株式会社 音響信号処理装置、その処理方法およびプログラム
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US20210249037A1 (en) 2021-08-12
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CN110278721B (zh) 2021-10-12
US11328741B2 (en) 2022-05-10

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