WO2006048006A1 - System zur wiedergabe von audiosignalen - Google Patents
System zur wiedergabe von audiosignalen Download PDFInfo
- Publication number
- WO2006048006A1 WO2006048006A1 PCT/DE2005/001988 DE2005001988W WO2006048006A1 WO 2006048006 A1 WO2006048006 A1 WO 2006048006A1 DE 2005001988 W DE2005001988 W DE 2005001988W WO 2006048006 A1 WO2006048006 A1 WO 2006048006A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- channel
- loudspeaker
- panels
- module
- playing back
- Prior art date
Links
Classifications
-
- 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
- H04S3/00—Systems employing more than two channels, e.g. quadraphonic
- H04S3/002—Non-adaptive circuits, e.g. manually adjustable or static, for enhancing the sound image or the spatial distribution
-
- 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
- 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
- H04R2201/403—Linear 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
- H04R2205/00—Details of stereophonic arrangements covered by H04R5/00 but not provided for in any of its subgroups
- H04R2205/022—Plurality of transducers corresponding to a plurality of sound channels in each earpiece of headphones or in a single enclosure
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2205/00—Details of stereophonic arrangements covered by H04R5/00 but not provided for in any of its subgroups
- H04R2205/024—Positioning of loudspeaker enclosures for spatial sound reproduction
Definitions
- the invention relates to a system for reproducing audio signals according to the preamble of patent claim 1.
- each audio track is assigned to a loudspeaker.
- each audio track is assigned to a loudspeaker.
- the 5.1 format with six audio tracks - ie audio tracks for the channel “rear left”, “rear right”, “front left”, “front right” “front center” and the bass channel (Subwooferkanal) - the Wie ⁇ task corresponding to the audio tracks in the playback room, each with a loudspeaker “rear left”, “rear right”, “front left”, “front right”, “front center” and subwoofer channel.
- any desired shape of a single wavefront is modeled by a large number of loudspeakers arranged next to one another (in a so-called loudspeaker array).
- the output signals of each loudspeaker must be supplied with a time delay and amplitude scaling in such a way that the radiated sound fields of the individual loudspeakers are superimposed correctly. For several sound sources, such.
- a disadvantage is the high cost of hardware to be used, especially in terms of speakers and amplifiers.
- several loudspeakers (wherein a loudspeaker may also consist of a woofer, a mid-range loudspeaker and a treble loudspeaker to ensure playback in the entire listening area) are mechanically arranged combined into a single unit, the so-called multi-channel loudspeaker panel.
- the integration of the analog or digital amplifier in this unit as well as the integration of a digital-to-analog converter for generating an analogue loudspeaker signal which is fed to the affected loudspeaker. This reduces z.
- the installation effort is about a factor of 8 compared to single loudspeakers.
- the disadvantage of a multi-channel loudspeaker panel manufactured for wave field synthesis technology is that a meaningful reproduction of an audio signal without a computer and control unit and the necessary software is not possible. Since there is currently little WFS audio content available, the cost of purchasing a WFS technology-based audio player is not worth the effort for most use cases.
- an unrestricted compatibility and upgradability to playback wave field synthesis content should be ensured.
- the essential advantage of the invention is that, in the reproduction of non-WFS contents, a sound quality corresponding to WFS technology is achieved by simple means.
- a curved adjacent arrangement of a plurality of loudspeaker panels or the loudspeakers of a panel per reproduction channel By means of a curved adjacent arrangement of a plurality of loudspeaker panels or the loudspeakers of a panel per reproduction channel, a significant enlargement of the sweet spot is possible.
- the arrangement of a switching module between the input module and the filter module makes it possible to switch the operating mode between non-WSF operation and WSF operation.
- Fig. 1 shows an arrangement of the speaker panels for the 5-channel audio format
- Fig. 2 is a block diagram of the system
- Fig. 3 shows a curved arrangement of the speaker panels for the 5-channel audio format 4 shows a linear arrangement of the loudspeaker panels for single-channel operation
- Fig. 6 shows an arrangement of the speaker panels for a stadium application in single-channel operation
- each speaker panel 1 consists of several individual loudspeakers, which are arranged horizontally and closely adjacent. The horizontal extent of the individual loudspeaker panels 1 determines the achievable size of the sweet spot 2.
- the virtual sound sources lie in this arrangement in Un ⁇ finite.
- FIG. 2 shows a loudspeaker panel 1 with assigned system module.
- the system module contains an input module 3, a switching module 4, a filter module 5 and an amplifier module 6.
- the audio signal is fed into the input module 3 at the input 7.
- the switching to the non-WSF operation maschine ⁇ module 4, the audio signal enters the filter module 4.
- the thus prepared audio signal is audio over the Amplifier module 6 is supplied to each speaker of the speaker panel 1. Due to the bass boost in the filter module 5, the arrangement of a separate subwoofer is normally unnecessary.
- each loudspeaker panel 1 likewise consists of a plurality of individual loudspeakers, which are arranged horizontally and closely adjacent to each other.
- the horizontal extension of the individual groups of loudspeaker panels 1 now determines the achievable size of the sweet spot 2, wherein a particularly large sweet spot 2 can be realized by the curved configuration of the individual groups of loudspeaker panels 1.
- the virtual sound sources are located behind the respective group of loudspeaker panels 1 in accordance with the curvature in the finite region.
- FIGS. 4 to 6 Solutions for single-channel operation are shown in FIGS. 4 to 6. According to FIG. 4, all loudspeaker panels 1 are linearly arranged in order to achieve a sound front. For a homogeneous sound of the auditorium 10 is possible. The virtual sound source lies in the infinite behind the stage. 9
- the loudspeaker panels 1 for sounding a segment-shaped auditorium 10 are arranged slightly curved on a circular path.
- the virtual sound source 11 lies behind the stage 9 in the center of the circle.
- FIG. 6 shows an arrangement of the loudspeaker panels 1 as would be advantageous for the sounding of the stands of a stadium.
Abstract
Description
Claims
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102004053834.4 | 2004-11-04 | ||
DE102004053834 | 2004-11-04 | ||
DE102005052904A DE102005052904A1 (de) | 2004-11-04 | 2005-11-03 | System zur Wiedergabe von Audiosignalen |
DE102005052904.6 | 2005-11-03 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2006048006A1 true WO2006048006A1 (de) | 2006-05-11 |
Family
ID=35722387
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2005/001988 WO2006048006A1 (de) | 2004-11-04 | 2005-11-04 | System zur wiedergabe von audiosignalen |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE102005052904A1 (de) |
WO (1) | WO2006048006A1 (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2373054B1 (de) | 2010-03-09 | 2016-08-17 | Deutsche Telekom AG | Wiedergabe in einem beweglichen Zielbeschallungsbereich mittels virtueller Lautsprecher |
EP2571290B1 (de) | 2011-09-15 | 2014-04-30 | Deutsche Telekom AG | Lokale Schallfeldsynthese durch einen virtuellen Streukörper |
DE102020116476A1 (de) | 2020-06-23 | 2021-12-23 | Ralph Zühlsdorff | Vorrichtung und Verfahren zur Wiedergabe von Audiosignalen |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5301237A (en) * | 1991-11-14 | 1994-04-05 | Fosgate James W | Surround sound loudspeakers |
EP1272004A2 (de) * | 2001-06-21 | 2003-01-02 | Bose Corporation | Audiosignalverarbeitung |
US6633648B1 (en) * | 1999-11-12 | 2003-10-14 | Jerald L. Bauck | Loudspeaker array for enlarged sweet spot |
-
2005
- 2005-11-03 DE DE102005052904A patent/DE102005052904A1/de not_active Withdrawn
- 2005-11-04 WO PCT/DE2005/001988 patent/WO2006048006A1/de not_active Application Discontinuation
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5301237A (en) * | 1991-11-14 | 1994-04-05 | Fosgate James W | Surround sound loudspeakers |
US6633648B1 (en) * | 1999-11-12 | 2003-10-14 | Jerald L. Bauck | Loudspeaker array for enlarged sweet spot |
EP1272004A2 (de) * | 2001-06-21 | 2003-01-02 | Bose Corporation | Audiosignalverarbeitung |
Also Published As
Publication number | Publication date |
---|---|
DE102005052904A1 (de) | 2006-06-29 |
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