EP2786597A1 - Device and method for simulating stereophonic sound - Google Patents
Device and method for simulating stereophonic soundInfo
- Publication number
- EP2786597A1 EP2786597A1 EP12822957.2A EP12822957A EP2786597A1 EP 2786597 A1 EP2786597 A1 EP 2786597A1 EP 12822957 A EP12822957 A EP 12822957A EP 2786597 A1 EP2786597 A1 EP 2786597A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- module
- reverberation
- room
- sound
- speakers
- 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.)
- Ceased
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04S—STEREOPHONIC SYSTEMS
- H04S7/00—Indicating arrangements; Control arrangements, e.g. balance control
- H04S7/30—Control circuits for electronic adaptation of the sound field
- H04S7/305—Electronic adaptation of stereophonic audio signals to reverberation of the listening space
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04S—STEREOPHONIC SYSTEMS
- H04S7/00—Indicating arrangements; Control arrangements, e.g. balance control
- H04S7/40—Visual indication of stereophonic sound image
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2227/00—Details of public address [PA] systems covered by H04R27/00 but not provided for in any of its subgroups
- H04R2227/007—Electronic adaptation of audio signals to reverberation of the listening space for PA
-
- 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
- H04S2400/11—Positioning of individual sound objects, e.g. moving airplane, within a sound field
-
- 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
- H04S2400/15—Aspects of sound capture and related signal processing for recording or reproduction
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04S—STEREOPHONIC SYSTEMS
- H04S2420/00—Techniques used stereophonic systems covered by H04S but not provided for in its groups
- H04S2420/13—Application of wave-field synthesis in stereophonic audio systems
Definitions
- the present invention relates to a room sound simulation system, a method and a use of the room sound simulation system, which has a
- Reverberation time extension and / or a directional sound allows.
- the location and room information is already mixed during the sound mixing process in individual, discrete channels to be transmitted and with a multi-speaker playback system, the individual channels are played. It must be the reproducing
- Speakers are placed at a predetermined position according to the recording relative to the listener to achieve a spatial impression.
- More advanced systems for space simulations generate the drive signals for the individual speakers only during playback, based on position information of a sound source with respect to the playback room and the spatial information of a playback environment to be simulated.
- the systems are based on Wave Field Synthesis (WFS). This is a spatial audio reproduction method for creating virtual acoustic environments. It will be outgoing from a virtual point
- the WFS is based on the Huygens principle, after
- each wave front can also be considered as a superposition of elementary waves.
- any wavefront can be synthesized from these elementary waves.
- a computer program controls, via further means, individual loudspeakers arranged around the listener for sound wave generation exactly at the time in which a virtual wavefront would pass through its point in space.
- Three-dimensional audio playback systems based on wave field synthesis thus generate a natural and spatial sound impression with the help of many densely arranged loudspeakers. Due to the high demands on the room, number of speakers and computing power, usually only proprietary systems are produced, which can only meet a dedicated application (for example, reverberation time extension). Furthermore, conventional systems have dedicated components for signal transmission, directional processing, and room processing, resulting in significantly higher system latencies and a high system price. In addition, in various A D and D / A T conversions worse noise voltage intervals are added.
- From EP 1 878 308 B1 is a method for driving a
- Tonwiedergabesystems known that is designed to be in one Playback environment to create a spatial tone impression.
- a very large number of juxtaposed speakers (a so-called speaker array) is used by a listener.
- the orientation of the speakers is 360 ° in a horizontal arrangement.
- this method requires a very large number of speakers and more dedicated
- the invention is therefore an object of the invention to provide a room sound simulation system, which manages with a reduced number of speakers and without dedicated components and / or proprietary hardware, while a variety of different functions such as
- Reverberation time extension and directional sound provides.
- a room sound simulation system which has the following:
- a core module with a room simulation module, a reverberation module and an interface module,
- a multiplicity of audio signals with respect to amplitude and time can be reproduced with a system latency of less than 2.5 ms by means of a multiplicity of loudspeakers.
- the system latency here includes the complete system, from the Klanán to the loudspeaker, so also
- Amplifiers I / O modules, equalizers, signal converters, etc. Due to the low latency time of ⁇ 2.5 ms, the system is particularly relevant for calibration on feedback, much easier to handle. The low latency is a prerequisite for this, in addition to reverberation or reverberation extension also directional sounding available.
- the core module controlled by the control module points
- a synthetic reverberation module for generating a synthetic reverberation and a regenerative reverberation module for generating a regenerative reverberation.
- the synthetic reverberation can be arbitrarily mixed with the regenerative reverberation.
- the regenerative reverberation module is also controlled by microphones, among other things.
- the reverberation or the reverberation time extension and the directional sounding in the core module are merged or "merged" sequentially or in parallel.
- the digital audio / network system further advantageously comprises:
- the loudspeakers are substantially horizontal band-shaped and the horizontal spacing of the loudspeakers is substantially less than or equal to 1, 5 m to each other. This distance is measured from membrane center to membrane center.
- the vertical position of the front and wall speakers is slightly above the auditorium. This is already a representative hearing in a range (sweetspot) from a distance of also 1, 5 m from the speaker achieved. With reduced distance or with a halved distance of 0.75 m between the speakers, the sweetspot is significantly increased, so that a representative sound experience already ab 0.75m is reached. This allows the virtual sources to be better localized and thus gives a clearer impression.
- the horizontal spacing of the loudspeakers is substantially less than or equal to 1, 5 m to each other. This distance is measured from membrane center to membrane center.
- the vertical position of the front and wall speakers is slightly above the auditorium. This is already a representative hearing in a range (sweetspot) from a distance of also 1, 5 m from the speaker achieved. With reduced distance or with a hal
- the speakers are advantageously aligned on a rectangular, diamond, or honeycomb grid.
- the ceiling loudspeakers (33c) are aligned on a logarithmic grid R1 extending in a longitudinal direction of a space (50).
- the digital audio / network system further comprises an I / O module and an amplifier module, with which a plurality of
- the room sound simulation system has a
- rooms treated acoustically will have a short reverberation time and thus good speech intelligibility to be exhibited, in particular by calling a preset or a preset, advantageously the acoustic attributes such as a concert hall awarded.
- the system is based on the CAD module and presets
- the room sound simulation system has an open
- Network topology making it easy to install and uninstall.
- the system can be used both in a fixed installation e.g. in one
- Concert hall as well as mobile at festivals and e.g. Major events are used. Furthermore, this simplifies the assembly and disassembly and thus leads to a time and cost savings.
- acoustic panels and / or acoustic wall parts By means of acoustic panels and / or acoustic wall parts, in acoustically inadequate surroundings, it is possible to prevent sound from being reflected and / or uncontrollable reverberation spaces from arising.
- the acoustic panels and / or acoustic wall parts are positioned in acoustically inadequate environment accordingly.
- Both passive and active (antinoise) panels can be used. These may e.g. have a selective passive sound insulation.
- the Jardinsimulationssystems can be used to generate a playback room, which corresponds to the production space acoustically, in particular in the Nachhalleigenschaften.
- a sound characteristic in a building with a long reverberation e.g. a church
- a short-lived environment e.g. an open-air site
- Figure 1 is a schematic representation of the Jardinklangsimulationssystems according to a preferred embodiment of the present invention
- Figure 2 is a schematic representation of the surround sound simulation system with details of the digital audio / network system according to a preferred embodiment
- Figure 3 is a schematic illustration of a conventional room in plan view for the room sound simulation system according to a preferred embodiment of the present invention
- Figure 4 is a schematic representation of the room sound simulation system with a room simulation according to a preferred embodiment of
- Figure 5 is a schematic representation of the surround sound simulation system with components of the tracking system and a sound source in various positions in relation to an auditorium according to a preferred
- Figure 6 is a schematic representation of the Jardinklangsimulationssystems according to a second embodiment of the present invention.
- Figure 7 is a schematic representation of the arrangement of the speakers at different grids; and Figure 8 is a schematic representation of the relationship between the number of speakers and the size of the sweet spot.
- Figures 1 to 4 show a preferred embodiment of a
- the surround sound simulation system 1 includes a core module 10, a control module 20, a CAD module 25, and a digital audio / networking system 30. All components are interconnected by cabling, preferably by Ethernet cabling, via a switch 36.
- the control module 20 provides a user interface, calculates spatial parameters and transmits the corresponding data via Ethernet to the core module 10.
- the core module 10 provided with appropriate parameters by the control module 20 is responsible for the audio processing and controls the entire digital audio / network system 30.
- a plurality of sound sources 34 in particular up to 32 sound sources 34, can be managed and controlled.
- the core module 10 refers to a room simulation module (RSM) 11, a
- Distributor module 14 a digital audio delay matrix module 21, with which spatial reverberation values are calculated, and an interface module 15.
- the parameters transmitted produce a reverberation time extension and / or a directional sound in the room simulation module (RSM) 11 , the synthetic reverberation module 12 and the regenerative
- Reverberation module 13 calculated for a sound source 34 and thus a three-dimensional acoustic room simulation provided.
- the synthetic reverberation and the regenerative reverberation are processed sequentially or in parallel in the core module 10.
- For the room simulation parameters of a large number of acoustically calibrated rooms can be used.
- a sound characteristic in a building with a long reverberation e.g. a church
- a short-lived environment e.g. a concert hall
- acoustically difficult conditions e.g. a large stadium dominated by the sound experience of a concert hall.
- room parameters can be adjusted and simulated by means of the control module 20. This can be done by means of a 3D-capable CAD system, which determines the sound characteristics of a room due to the geometric conditions and / or the surface properties, such as e.g.
- the digital audio / network system 30 includes an amplifier module 31, an I / O module 32, front speakers 33a, wall speakers 33b, in particular
- Ceiling speaker 33c a Klanscher 34, both fixed microphones 35 and at least one not shown mobile microphone, LAN cable 37, speaker cable 38 and microphone cable 39.
- the mobile microphones are e.g. used by live actors. This is with
- regenerative reverberation denotes a noise recorded by the stationary microphones 35 and reproduced in time by the loudspeakers.
- the input and output means, sound source 34 and amplifier 31, are connected via the I / O module 32, which in turn is connected via LAN to the switch 36 and thus also to the core module 10.
- the control module 20 and the CAD module 25 is connected.
- all sound sources 34 via the interface module 15 are the
- Room simulation module 11 provided. It uses that
- Interface module 15 preferably standard Ethernet technology.
- the management of the I / O's is done centrally in the core module 10.
- corresponding ceiling reflections are generated and can via ceiling speakers 33c
- Wall speaker 33b mounted slightly raised above the auditorium 51 in a distance optimized to the number and surround sound. This distance is variable and can be defined according to the requirements. The distance is in a concert hall, for example, in a front and middle section of a room 50, with respect to the auditorium, about 1, 5 m. In a rear section of the room may be a greater distance due to the
- Ceiling speakers 33c and microphones 35 in particular the
- the digital audio / network system 30 can be used both as a variable system
- a preferably attachment of the ceiling loudspeakers 33c can be taken from FIG. 4, in which case they extend on a logarithmic grid R1 extending in the longitudinal direction of the space 50, which may be rectangular align.
- the distance of the ceiling speakers 33c is smaller than in a middle or rear portion of the room 50. This reflects the normal listening habits of an auditorium, which aligns with the actors and thus perceives sound more clearly from the front than Sound from the back, reducing the number of speakers near the end of the room.
- circular grid R1 extending in the longitudinal direction of the space 50, which may be rectangular align.
- the ceiling loudspeakers 33c may also be aligned on a logarithmic grid R1 extending from the auditorium to the actors.
- Directional sonication is a system latency of less than 2.5 ms. This includes the complete signal chain, from the sound source 34 to the speakers.
- control module 20 For the core module 10, control module 20, CAD module 25 and digital audio / network system 30, a network is preferably included
- Gigabit cabling for example the CAT7 standard, which is also suitable for 10 Gbit Ethernet, is preferably selected here.
- the surround sound simulation system 1 is to drive a plurality of loudspeakers 33a, 33b, 33c, in particular up to 512 loudspeakers, a plurality of amplifier modules 31 are also required.
- An amplifier module 31 can control several loudspeakers, in particular up to 8 loudspeakers, at the same time.
- These amplifier modules 31 are in turn connected to the network via an I / O module 32.
- an I / O module 32 channels, in particular up to 16 channels, both for sound sources 34 and amplifier modules 31 freely combinable available. Due to the required system latency, all network users, core module 10, control module 20, CAD module 25 and I / O modules 32 are connected to the network.
- each network subscriber is through a port of a switch 36 to which the data stream is due
- a switch Due to the network's addressability and prioritization requirements due to the low latency, a switch will be able to evaluate and process the higher transport levels of a protocol, particularly a layer-3 switch. Furthermore, the transmission of the audio data of the system is prioritized as audio streams, for example by means of QoS (Quality of Service). Thus, the traffic for control and management tasks is given a lower priority than that of the audio streams. This will be a safe and fast
- a dedicated bandwidth is provided for each port of the switch 36. Due to the required I / O modules 32 and the required bandwidth, in particular from 1.7 to 3.4 Mbit / s or higher per channel, several switches 36 are made available in the network. To maintain latency, the number of hops that passes through a data packet from sender to receiver is limited to a maximum of 7 hops.
- the control module 20 connected to the core module 10 via the switch 36 can be structurally conditioned, acoustic, in existing rooms
- the adjustment of the system is possible in different ways. For example, as shown in FIG. 3, the space simulated acoustically with the letter A and not yet existing is changed until its contour approaches the dashed line designated by the letter B.
- the acoustic properties of a non-existing space can be simulated easily and quickly and expensive, serious acoustic errors can be avoided.
- the core module 10 is controlled in particular by a tracking system 29.
- the tracking system 29 has a geodata transmitter 27 and a geodata receiver 28. This is e.g.
- This three-dimensional room sound simulation system 1 is universally applicable and is particularly suitable for seating events and mobile purposes. Through the use of standard loudspeakers, a cost-effective, compact and efficient system has been developed which can reproduce a realistic and spatial sounding scenario even without a closed wave field.
- the specified latency time of less than 2.5 ms refers to the complete signal chain integrated in the system, ie transmission via network, Hall matrix and processing (RQ, Hall, etc.). This is especially achieved with up to 512 connected speakers. Furthermore, the three-dimensional surround sound simulation system 1 convinces with an extended sweet spot and the possibility for live rendering. The system can thus be used in both planetariums, cinemas and
- the present invention offers the following advantages:
- Control module 20 comprises a digital audio delay matrix module 21.
- room geometries, surfaces and entire rooms are sound-simulated by means of a CAD module 25 connected to the core module 10 and / or control module 20.
- a CAD module 25 connected to the core module 10 and / or control module 20.
- a digital audio / network system could be controlled by a separate computer.
- a freely scalable Hall matrix is controlled by a separate computer.
- ceiling loudspeakers 33c can also be aligned on a logarithmic grid R2 extending in a transverse direction of a room 50.
- Wall loudspeakers conceivable. 8 shows the relationship between the number of active speakers and the size of the resulting sweet spot. As the number of active speakers increases, so does the sweetspot and thus the range of a representative listening experience. If, however, the number of speakers on a total of only four active
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Circuit For Audible Band Transducer (AREA)
- Stereophonic System (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102011119642A DE102011119642A1 (en) | 2011-11-28 | 2011-11-28 | Apparatus and method for room sound simulation |
PCT/DE2012/001138 WO2013079051A1 (en) | 2011-11-28 | 2012-11-28 | Device and method for simulating stereophonic sound |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2786597A1 true EP2786597A1 (en) | 2014-10-08 |
Family
ID=47678428
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP12822957.2A Ceased EP2786597A1 (en) | 2011-11-28 | 2012-11-28 | Device and method for simulating stereophonic sound |
Country Status (4)
Country | Link |
---|---|
US (1) | US9338579B2 (en) |
EP (1) | EP2786597A1 (en) |
DE (1) | DE102011119642A1 (en) |
WO (1) | WO2013079051A1 (en) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102015008000A1 (en) * | 2015-06-24 | 2016-12-29 | Saalakustik.De Gmbh | Method for reproducing sound in reflection environments, in particular in listening rooms |
JP6798502B2 (en) * | 2015-12-11 | 2020-12-09 | ソニー株式会社 | Information processing equipment, information processing methods, and programs |
EP3474576B1 (en) * | 2017-10-18 | 2022-06-15 | Dolby Laboratories Licensing Corporation | Active acoustics control for near- and far-field audio objects |
US10531222B2 (en) | 2017-10-18 | 2020-01-07 | Dolby Laboratories Licensing Corporation | Active acoustics control for near- and far-field sounds |
CN108012214B (en) * | 2017-11-08 | 2019-05-10 | 西北工业大学 | Reconstruction of Sound Field method based on the recessed penalty function of broad sense minimax |
US10777049B1 (en) | 2019-03-29 | 2020-09-15 | Honeywell International Inc. | Strobes and speaker-strobes for a mass notification system |
CN110366091B (en) * | 2019-08-07 | 2021-11-02 | 武汉轻工大学 | Sound field reconstruction method and device based on sound pressure, storage medium and device |
Citations (3)
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US5119428A (en) * | 1989-03-09 | 1992-06-02 | Prinssen En Bus Raadgevende Ingenieurs V.O.F. | Electro-acoustic system |
US5452360A (en) * | 1990-03-02 | 1995-09-19 | Yamaha Corporation | Sound field control device and method for controlling a sound field |
US6128395A (en) * | 1994-11-08 | 2000-10-03 | Duran B.V. | Loudspeaker system with controlled directional sensitivity |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102005043641A1 (en) | 2005-05-04 | 2006-11-09 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Apparatus and method for generating and processing sound effects in spatial sound reproduction systems by means of a graphical user interface |
-
2011
- 2011-11-28 DE DE102011119642A patent/DE102011119642A1/en active Pending
-
2012
- 2012-11-28 WO PCT/DE2012/001138 patent/WO2013079051A1/en active Application Filing
- 2012-11-28 US US14/361,209 patent/US9338579B2/en active Active
- 2012-11-28 EP EP12822957.2A patent/EP2786597A1/en not_active Ceased
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
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US5119428A (en) * | 1989-03-09 | 1992-06-02 | Prinssen En Bus Raadgevende Ingenieurs V.O.F. | Electro-acoustic system |
US5452360A (en) * | 1990-03-02 | 1995-09-19 | Yamaha Corporation | Sound field control device and method for controlling a sound field |
US6128395A (en) * | 1994-11-08 | 2000-10-03 | Duran B.V. | Loudspeaker system with controlled directional sensitivity |
Non-Patent Citations (7)
Title |
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ELIZABETH M. WENZEL: "Analysis of the Role of Update Rate and System Latency in Interactive Virtual Acoustic Environments", 26 September 1997 (1997-09-26), AES 103RD CONVENTION 1997 SEPTEMBER 26-29 NEW YORK, USA, pages 1 - 14, XP055059634, Retrieved from the Internet <URL:http://www.aes.org/tmpFiles/elib/20130412/7146.pdf> [retrieved on 20130415] * |
See also references of WO2013079051A1 * |
SILZLE ANDREAS ET AL: "IKA-SIM: A System to Generate Auditory Virtual Environments", AES CONVENTION 116, 1 May 2004 (2004-05-01), NEW YORK, USA, XP040506806 * |
SLADECZEK CHRISTOPH ET AL: "Audio Network Based Massive Multichannel Loudspeaker System for Flexible Use in Spatial Audio Research", CONFERENCE: 44TH INTERNATIONAL CONFERENCE: AUDIO NETWORKING; NOVEMBER 2011, AES, 18 November 2011 (2011-11-18), NEW YORK, USA, XP040567683 * |
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T OKAMOTO ET AL: "IMPROVING SOUND FIELD REPRODUCTION IN A SMALL ROOM BASED ON HIGHER-ORDER AMBISONICS WITH A 157-LOUDSPEARKER ARRAY", PROC. OF THE 2ND INTERNATIONAL SYMPOSIUM ON AMBISONICS AND SPHERICAL ACOUSTICS, 6 May 2010 (2010-05-06), XP055275534, Retrieved from the Internet <URL:https://www.researchgate.net/profile/Densil_Cabrera/publication/228564562_Improving_sound_field_reproduction_in_a_small_room_based_on_higher-order_ambisonics_with_a_157-loudspeaker_array/links/00b7d522009ad8f1e9000000.pdf> [retrieved on 20160525] * |
TEUTSCH H ET AL: "An integrated real-time system for immersive audio applications", APPLICATIONS OF SIGNAL PROCESSING TO AUDIO AND ACOUSTICS, 2003 IEEE WO RKSHOP ON. NEW PALTZ, NY, USA OCT,. 19-22, 2003, PISCATAWAY, NJ, USA,IEEE, 19 October 2003 (2003-10-19), pages 67 - 70, XP010696454, ISBN: 978-0-7803-7850-6, DOI: 10.1109/ASPAA.2003.1285821 * |
Also Published As
Publication number | Publication date |
---|---|
DE102011119642A1 (en) | 2013-05-29 |
WO2013079051A8 (en) | 2013-08-01 |
US20140314240A1 (en) | 2014-10-23 |
WO2013079051A1 (en) | 2013-06-06 |
US9338579B2 (en) | 2016-05-10 |
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