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Method and device for improved sound field rendering accuracy within a preferred listening area

A regional and sound field technology, applied to improve the sound field rendering accuracy and equipment field in the best listening area

Active Publication Date: 2010-10-27
SENNHEISER ELECTRONICS GMBH & CO KG
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

However, there may be positions in the room where the audience is never there because of the presence of furniture or simply because their task or situation does not require it

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  • Method and device for improved sound field rendering accuracy within a preferred listening area
  • Method and device for improved sound field rendering accuracy within a preferred listening area
  • Method and device for improved sound field rendering accuracy within a preferred listening area

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Embodiment Construction

[0075] Figure 1 to Figure 5 This has been discussed in the introductory part of the specification and fully represents the prior art. These figures are therefore not discussed further at this stage.

[0076] Image 6 has been described and is no longer discussed at this stage.

[0077] Figure 7 A sound field rendering device according to the prior art is described. In the device, sound field filtering means 14 calculate a plurality of second audio signals 3 from a first audio input signal 1 using localization filter coefficients 7 . The localization filter coefficients 7 are calculated in the localization filter calculation device 15 on the basis of the virtual source description data 8 and the loudspeaker description data 9 . The positions of the loudspeaker 2 and the virtual source 5 (contained in the virtual source description data 8 and the loudspeaker description data 9 ) are defined relative to a reference position 35 . The second audio signal 3 drives a pluralit...

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Abstract

The invention relates to a method and a device for sound field reproduction from a first audio input signal (1) using a plurality of loudspeakers (2) aiming at synthesizing a sound field within a preferred listening area (6) in which none of the loudspeakers (2) are located, said being described as emanating from a virtual source (5). The method further comprises steps of calculating a plurality of positioning filters (7) using virtual source description data (8) and loudspeaker description data (9) according to a sound field reproduction technique, and modifying the first audio input signal (1) using the positioning filter coefficients (7) to form second audio input signals (3). Therefore, a loudspeaker ranking (11) of the importance of each loudspeaker (2) for the synthesis of the soundfield within the preferred listening area (6) is defined. Then, second audio input signals (6) are modified according to the loudspeaker ranking (11) to form third audio input signals (12). Finally, the loudspeakers (2) are fed with the third audio input signals (12) which synthesize a sound field (3).

Description

technical field [0001] The present invention relates to a method and apparatus for sound field reproduction (reproduction) from a first audio input signal using a plurality of speakers intended to synthesize a sound field in an optimum listening area in which no speakers are placed, the sound field being Described as emanating from a virtual source, the method comprises the steps of: calculating localized filter coefficients using virtual source description data and loudspeaker description data according to a sound field reproduction technique derived from surface integrals; and applying the localized filter coefficients to filter The first audio input signal to form a second audio input signal. Background technique [0002] Acoustic field reproduction refers to the synthesis of physical properties of an acoustic wave field within an extended spatial portion. Such a framework is able to escape the well-known limitations of stereo-based sound reproduction techniques with res...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04S7/00
CPCH04S2420/13H04S7/30H04S2420/11H04S7/303
Inventor 克莱门斯·库恩-拉洛夫艾蒂尼·科蒂尔雷纳托·佩莱格里尼马赛厄斯·罗森塔尔
Owner SENNHEISER ELECTRONICS GMBH & CO KG
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