EP3090575B1 - Procédé de reproduction audio dans un système de son à plusieurs canaux - Google Patents

Procédé de reproduction audio dans un système de son à plusieurs canaux Download PDF

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Publication number
EP3090575B1
EP3090575B1 EP14851410.2A EP14851410A EP3090575B1 EP 3090575 B1 EP3090575 B1 EP 3090575B1 EP 14851410 A EP14851410 A EP 14851410A EP 3090575 B1 EP3090575 B1 EP 3090575B1
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EP
European Patent Office
Prior art keywords
channels
signals
signal
level
output signals
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EP14851410.2A
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German (de)
English (en)
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EP3090575A2 (fr
Inventor
Gunnar Kron
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Kronoton GmbH
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Kronoton GmbH
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    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D9/00—Removing sheet piles bulkheads, piles, mould-pipes or other moulds or parts thereof
    • E02D9/02—Removing sheet piles bulkheads, piles, mould-pipes or other moulds or parts thereof by withdrawing
    • 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 
    • H04S5/005—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 five- or more-channel type, e.g. virtual surround
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
    • E02F3/36—Component parts
    • E02F3/3604—Devices to connect tools to arms, booms or the like
    • E02F3/3609—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat
    • E02F3/3654—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat with energy coupler, e.g. coupler for hydraulic or electric lines, to provide energy to drive(s) mounted on the tool
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
    • E02F3/36—Component parts
    • E02F3/3604—Devices to connect tools to arms, booms or the like
    • E02F3/3677—Devices to connect tools to arms, booms or the like allowing movement, e.g. rotation or translation, of the tool around or along another axis as the movement implied by the boom or arms, e.g. for tilting buckets
    • E02F3/3681—Rotators
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/96—Dredgers; Soil-shifting machines mechanically-driven with arrangements for alternate or simultaneous use of different digging elements
    • E02F3/963—Arrangements on backhoes for alternate use of different tools
    • 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
    • G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
    • G10L19/008—Multichannel audio signal coding or decoding using interchannel correlation to reduce redundancy, e.g. joint-stereo, intensity-coding or matrixing
    • 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
    • H04R5/02—Spatial or constructional arrangements of loudspeakers
    • 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
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2201/00—Details of transducers, loudspeakers or microphones covered by H04R1/00 but not provided for in any of its subgroups
    • H04R2201/40—Details of arrangements for obtaining desired directional characteristic by combining a number of identical transducers covered by H04R1/40 but not provided for in any of its subgroups
    • H04R2201/401—2D or 3D arrays of transducers
    • 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
    • H04R2499/15—Transducers incorporated in visual displaying devices, e.g. televisions, computer displays, laptops
    • 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
    • H04S2400/01—Multi-channel, i.e. more than two input channels, sound reproduction with two speakers wherein the multi-channel information is substantially preserved
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S3/00—Systems employing more than two channels, e.g. quadraphonic

Definitions

  • the invention relates to a device according to the preamble of claim 1.
  • a device of the type mentioned is known in the art and is in the US 5 412 732 A discloses a method for audio playback in a multi-channel sound system in this apparatus.
  • Next is from the WO 2011/119401 A2 a video display, in particular a television, with an arrangement of speakers in a lower and upper listening level, known.
  • a loudspeaker configuration in a 9.1 three-dimensional sound system which is suitable for a home theater, for example, consists of ten loudspeakers, which in turn requires a corresponding number of output signals for the lower and upper listening levels.
  • the signals in the lower and upper listening levels 4a, 4b, 5a, 5b are distributed to the loudspeakers, they have been processed in the context of a multi-channel sound system and on the basis of the input signals R and L by an audio processor provided for this purpose.
  • Fig. 2 shows the inventive method, starting from the two input channels R and L via linear and parallel channels guided 8.9 the output signals R and L in the lower listening plane 7 and in the upper listening plane 6, the left output signal L Hi and the right output signal R Hi generates four output signals, two for the top and two for the lower listening level.
  • the method is a signal processor in the form of an audio processor, on which there is a software.
  • the software contains an algorithm which is processed by the signal processor, the algorithm detecting the method.
  • Fig. 2 further shows, proceeding from the two input signals L and R further process steps.
  • Three channels are first decoded from the two input signals L and R and formed parallel to the channels 8, 9 which are guided linearly to the output. This produces the upper listening plane 6, while the channels 8, 9 which are guided linearly to the output form the lower listening plane 7.
  • the channels R L and R R map the premises and reflections within the input signals L, R, whereas the channel C (center channel) maps the addition of both input channels L, R. This makes it possible to further process the input signals L, R, if it is a mono signal. If a mono signal is present at the input, the channels R L and R R remain silent and the channel C carries on the signal information and thus makes further signal processing possible.
  • the channel R R is fed to the signal detector 10. This outputs the control signal "1" when the signal strength of R R falls below the selected threshold level and the control signal "0" when the level of the channel R R rises above the selected threshold level.
  • the threshold level is -20dB and the response time (trigger) is zero seconds.
  • the control signals of the signal detector 10 are multiplied by the signal multiplier 11 with the signal of the center channel. If there is no detected signal in the channel R R , so that no stereo signal in the channels R L and R R above or equal to the set by the threshold level signal strength and the signal detector 10 generates the control signal "1", the channel C with Multiplied by "1" and sent for further processing. If a detected signal is present in the channel R R , so that a stereo signal in the channels R L and R R is above or equal to the signal strength defined by the threshold level and the signal detector 10 generates the control signal "0", the channel C is included "0" multiplied and not released for further processing, since the signal is equal to zero, so that it is unequivocally detected whether a stereo signal is present.
  • a phase correction made to convert the signal from the channels R L and R R in a phase-pure stereo signal is achieved by using a delay 12 in the channel R R.
  • the channel R R is delayed to the channel R L so that the phases of both channels in a non-phase-rotated audio signal in stereo to each other.
  • the delay time is 140 samples with a clock rate of 48khz and 16bit.
  • the C channel is also readjusted in its phase by a delay 13, which is applied to the channel C R , after the channel C (L + R) after the signal multiplier 11 has been split into the channels C L and C R and has thus been continued in dual-mono channels.
  • the channel C is a pure mono channel and can be converted by the splitting into the two duo mono channels C L and C R and the delay of the channel C R to C L by a delay in a stereo signal with a phase correlation above zero.
  • the frequency adjustment of the center channel C by means of the equalizer 14.
  • the frequency adjustment of the channel C adjusts its frequency dependent mapping in the later output signals L Hi , R Hi the upper listening level 6, regardless of the later frequency adjustment of the output signal ,
  • the sound character of the output signals L Hi , R Hi optimally on in the Fig. 3 to 8 shown AV device can be emitted via these two channels
  • Encoding as a further process step sums the stereo signal the channels R L , R R with the stereo signal of the channels C L , C R to the channels L t , R t in such a way that the channels R L and C L the channel L t and the channels C R and R R the Form channel R t .
  • the summation is accompanied by a level adjustment at the level controls 15, 16, 17, 18, since the levels of the newly formed channels L t , R t increase by the described summation of the channels R L , RR with C L , CR.
  • the level adjustment lowers the levels R L , R R , C L , C R accordingly, so that their summation can not lead to overdriving.
  • the signals L t , R t as off Fig. 2 further, within the framework of the master section, adjusted individually for their later use in its frequency responses via the equalizers 19, 20.
  • the signals L t , R t appear farther from the original sound source.
  • the effect of the sound emission can be imitated by a frequency response. The further away it is from the original sound source, the more the upper frequencies can be lowered by a low-pass filter. It is also possible by the frequency adjustment to optimally tune the sound result to the speaker or speakers, which emits the output signals L Hi , R Hi later.
  • Fig. 2 shows a compression stage used in the master section.
  • the adjustment of the compressor 22 or a limiter ensures that the signal is smoothed so that the sound peaks can be intercepted and the quieter parts of the audio signal L t, Hi , R t, Hi can be raised. This enhances the auditory impression of the diffused and distant sound, since sound peaks preferably occur and decrease in the vicinity of a sound source the farther the receiving microphone is moved upwardly therefrom.
  • Another method step provides the level adjustment of the channels L t, Hi , R t, Hi at the level controls 23, 24 by the output level is adjusted in relation to channels of the lower listening plane 7, so that the impression of increased hearing perfectly on the respective Listening situation can be coordinated.
  • FIGS. 3 to 8 show audio-video devices (AV devices), in which the inventive method is integrated.
  • the AV devices each have a in the FIGS. 3 to 8 Not shown signal processor on which a software is located.
  • the software contains an algorithm that is processed by the signal processor in the form of an audio processor, wherein the algorithm detects the inventive method.
  • the in the Fig. 3 to 7 It is common in the case of the AV devices shown here that they also have picture input and picture output channels in addition to audio input and audio output channels.
  • AV devices such as a TV (TV) and an in the Fig. 3a, 3b flatscreen shown 28 have not, as before, only one or two speakers for emitting mono or stereo sound, but three speakers 26, 27 for the monaural sound ( Fig. 3b ) or four speakers 26, 27 for the stereo sound ( Fig. 3a ), since the upper listening level has been added.
  • the upper listening plane is to some extent extracted from the lower listening plane by the in Fig. 2 Encoding described what in the Fig. 3 to 8 indicated by the dashed arrows.
  • the loudspeakers 26, 27 are conventionally installed according to individual equipment requirements and mounted so as to allow a self-tuned listening field. It is also possible, for example, to let the loudspeakers of the upper listening plane radiate upwards in order to make the listening field to become even more diffuse upwards.
  • FIG. 4a, 4b Further application examples are a mobile PC 25 ( Fig. 4a, 4b ), a Tablet PC 29 ( Fig. 5a, 5b ) as well as a smartphone 31 ( Fig. 7a, 7b ) in fact in both vertical and horizontal usage and a radio 32 ( Fig. 8a, 8b ).
  • a soundbar 33 will not look like Fig. 6a, 6b shows, used only to reproduce the overall sound of an AV device, such as a television, but according to the invention also for the blasting of the extracted upper listening plane. This results in new speaker constellations within these types of devices because z.
  • a soundbar with individual outputs according to the invention for the upper listening level the otherwise no longer active loudspeakers of the TV set with the new signals of the upper listening level while operating a sound bar and thus can operate the TV more economically. Since a stereo signal is also generated within the scope of the invention, it can in turn be combined in the AV devices with matrix surround decoders in order also to subject the sound of the upper listening level to a surround decoding. This makes it possible to extract an entire upper listening plane forward and backward.
  • the present invention is not limited in its execution to the embodiments given above. Rather, a number of variants is conceivable, which make use of the solution shown in other types.
  • the channels 8, 9 in the lower listening plane 7 can also be processed further.
  • the output signals R and L in the lower listening plane 7 and in the upper listening plane 6 the left output signal L Hi and the right output signal R Hi generated, so initially four output signals, two for the upper listening level 6 and two for the lower listening level 7, are generated.
  • the left output signal L Hi and the right output signal R Hi are added to a mono signal L Hi + R Hi and supplied to a first speaker 35.
  • the output signals R and L in the lower listening level 7 are routed as channels L 1 and R 1 directly to the speakers 36, 37 of the soundbar 40.
  • the output signals R and L serve as input signals R and L in order to generate a lower hearing level 7 and an upper hearing level 6 again in the context of the method according to the invention, which in turn takes place by means of the algorithm in the signal processor 34 on which the software is located.
  • the software contains an algorithm, which is processed by the signal processor.
  • the output signals R and L in the lower listening level 7 and in the upper listening level 6 the left output signal L Hi and the right output signal R Hi generated, so again four output signals, two for the upper listening plane, 6 ie L Hi and R Hi , and two for the lower listening plane 7, ie L and R, are generated. Thereafter, the signals L Hi and R Hi are added to the signals R and L in the lower listening plane 7, ie, L Hi is added to the signal R with the signal L and R Hi . The added or mixed signals are thereby supplied to two further speakers 38, 39 of the soundbar 40 in the lower listening level.
  • the soundbar 40 thus has a total of five output channels, namely four output signals R, L, L Hi + L, R Hi + R in the lower listening level 7 and an output signal L Hi + R Hi in the upper listening level 6, all output channels also by level control , Equalizer, compressor etc. can be processed.
  • FIG. 9 shown variant of a modular expandable smallest unit can be in a soundbar, like FIG. 10 yet to be supplemented by a bass box (subwoofer) 41.
  • FIG. 10 illustrates that the output signals R and L in the lower listening plane in the signal sequence before their redistribution add together are sent through a lowpass filter 42 and simultaneously processed as R and L signals in the signal processor 34.
  • FIG. 11 Another variant of the inventive principle of the modularly expandable smallest unit of signal generation, which leads to complex speaker configurations, also illustrates FIG. 11 .
  • the signal processor 34 is used for the generation, specifically in the form of an audio processor, on which there is a software containing the algorithm.
  • FIG. 11 shown embodiment of the method according to the invention differs from the in FIG. 10 described in that the generated output signals R 1Hi , L 1Hi , L 1 and R 1 do not serve as input signals again, but in the processor 34 in parallel two further input signals S R and S L are processed in the form of surround signals to output signals by a parallel processing into the output signals R 2Hi , L 2Hi , L 2 and R 2 in the upper and lower listening levels are decoded.
  • the two output signals L 1 , L 2 and the two output signals R 1 , R 2 are sent to the speakers of the lower listening level 6, whereas the output signals L 1Hi , R 1Hi , L 2Hi and R 2Hi the upper listening level 7, such as FIG. 11 is further clarified, summed to signals R tHi , L tHi the upper listening level 7, the speakers of the upper listening level 7 are supplied.
  • the further channel LFE is led directly to a separate output and fed there as an output channel LFE another speaker, this output channel, as well as all other output channels, also by level control, equalizer, compressor, etc. can be processed.
  • the speaker configuration of an audio device connected to the in FIG. 11 described embodiment corresponds illustrated FIG. 12 ,

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  • Acoustics & Sound (AREA)
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Claims (9)

  1. Appareil comprenant des canaux d'entrée de son et des canaux de sortie de son, ainsi qu'un processeur ; dans lequel des haut-parleurs (26, 27, 33) sont associés à l'appareil, et un programme logiciel est installé sur le processeur, lequel logiciel contient un algorithme qui est traité par le processeur ; dans lequel l'algorithme comprend un procédé destiné à la restitution audio dans un système de son à plusieurs canaux qui présente deux signaux d'entrée L et R, pour lequel des signaux de sortie sont produits pour divers plans d'écoute ; dans lequel seul un plan d'écoute inférieur (7) et seul un plan d'écoute supérieur (6) sont produits et tout au plus six signaux de sortie sont générés, dont tout au plus deux signaux de sortie pour le plan d'écoute inférieur (7) et tout au plus quatre signaux de sortie pour le plan d'écoute supérieur (6) ; dans lequel des signaux stéréo et/ou des signaux mono sont produits pour les signaux dans le plan d'écoute inférieur (7) et dans le plan d'écoute supérieur (6) ; caractérisé en ce que les haut-parleurs (26, 27, 28) sont intégrés dans l'appareil et/ou sont disposés directement au niveau de l'appareil ; et dans lequel des canaux sont décodés à partir des canaux d'entrée prévus pour les canaux d'entrée R et L, lesquels canaux sont traités en signaux de sortie du plan d'écoute supérieur (6).
  2. Appareil selon la revendication 1, caractérisé en ce que des signaux mono sont produits pour les signaux dans le plan d'écoute inférieur (7).
  3. Appareil selon la revendication 1, caractérisé en ce que des signaux mono sont produits pour les signaux dans le plan d'écoute supérieur (7).
  4. Appareil selon l'une des revendications 1 à 3, caractérisé en ce que les signaux de sortie servent d'autres signaux d'entrée.
  5. Appareil selon l'une des revendications 1 à 4, caractérisé en ce que les canaux décodés sont générés sous la forme d'un canal spatial gauche RL = L-R, d'un canal spatial droit RR = R-L, ainsi que d'un canal central C = L+R.
  6. Appareil selon l'une des revendications précédentes, caractérisé en ce que des canaux (8, 9) dirigés de manière linéaire et parallèle sont générés vers les canaux décodés à partir des canaux d'entrée.
  7. Appareil selon l'une des revendications précédentes, caractérisé en ce que tout au moins une partie des canaux d'entrée et/ou des canaux de sortie sont additionnés les uns aux autres.
  8. Appareil selon l'une des revendications précédentes, caractérisé en ce que tout au plus deux signaux de sortie sont générés pour le plan d'écoute inférieur (7) et tout au plus deux signaux de sortie sont générés pour le plan d'écoute supérieur (6).
  9. Appareil selon l'une des revendications précédentes, caractérisé en ce que ledit appareil présente des canaux d'entrée d'image et des canaux de sortie d'image.
EP14851410.2A 2014-01-05 2015-01-02 Procédé de reproduction audio dans un système de son à plusieurs canaux Active EP3090575B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102014100049.8A DE102014100049A1 (de) 2014-01-05 2014-01-05 Verfahren zur Audiowiedergabe in einem Mehrkanaltonsystem
PCT/EP2014/003477 WO2015101413A2 (fr) 2014-01-05 2015-01-02 Procédé de reproduction audio dans un système de son à plusieurs canaux

Publications (2)

Publication Number Publication Date
EP3090575A2 EP3090575A2 (fr) 2016-11-09
EP3090575B1 true EP3090575B1 (fr) 2018-08-22

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US (2) US11153702B2 (fr)
EP (1) EP3090575B1 (fr)
KR (1) KR102332913B1 (fr)
DE (2) DE202014010599U1 (fr)
WO (1) WO2015101413A2 (fr)

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US9380383B2 (en) 2013-09-06 2016-06-28 Gracenote, Inc. Modifying playback of content using pre-processed profile information
DE112017007024A5 (de) * 2017-02-09 2020-03-05 Kronoton Gmbh Lautsprecheranordnung für ein kraftfahrzeug
US9820073B1 (en) 2017-05-10 2017-11-14 Tls Corp. Extracting a common signal from multiple audio signals
KR20200117314A (ko) * 2019-04-03 2020-10-14 엘지디스플레이 주식회사 표시장치

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US11722831B2 (en) 2023-08-08
KR102332913B1 (ko) 2021-11-29
DE202014010599U1 (de) 2016-02-02
WO2015101413A2 (fr) 2015-07-09
US11153702B2 (en) 2021-10-19
DE102014100049A1 (de) 2015-07-09
US20220070602A1 (en) 2022-03-03
KR20170004952A (ko) 2017-01-11
US20170026768A1 (en) 2017-01-26
WO2015101413A3 (fr) 2015-08-20
EP3090575A2 (fr) 2016-11-09

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