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Multi-channel audio control

A multi-channel, channel technology, applied in the direction of stereo system, electrical components, sensor circuit damping, etc., can solve problems such as complex circuits

Inactive Publication Date: 2007-08-29
KONINK PHILIPS ELECTRONICS NV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Furthermore, the system of the above-mentioned US 6307941 involves relatively complex circuits, such as circuits for crosstalk cancellation

Method used

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  • Multi-channel audio control
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Examples

Experimental program
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Embodiment Construction

[0029] The audio device shown by way of non-limiting example only in Fig. 1 comprises an audio device 1 and a set of transducer units 40-44. The illustrated multi-channel listening areas 10 and 10' are located in an item of furniture 90, which in this case is a sofa.

[0030] The transducer units 40-44 coupled to the audio device 1 each comprise one or more transducers, such as speakers. In the illustrated embodiment, five converter units are used: central unit 40 , left unit 41 , right unit 42 , left rear unit 43 and right rear unit 44 . Together these units 40 - 44 form an acoustic pattern which at position I creates a multi-channel listening area or "sweet spot" 10 . In this multi-channel listening area, the "surround" effect of the audio device can be heard, including the spatial properties of the device. Outside the multi-channel listening area, the spatial properties are at least partially lost because proper balancing of the signal produced by the transducer unit is n...

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Abstract

A multi-channel audio device (1) comprises an amplification unit (2) for amplifying respective audio signals of the channels and a control unit (3) for controlling properties of the audio signal so as to produce a multi-channel listening area (10) or ''sweet spot''. The control unit (3) is arranged for continually moving the multi-channel listening area (10) between a first location (I) and a second location (II), such that two or more listeners may alternatingly be located in a multi-channel listening area (10).

Description

technical field [0001] The present invention relates to multi-channel audio control. More specifically, the present invention relates to multi-channel audio devices and methods that allow multi-channel listening zones to be controlled. Background technique [0002] Various multi-channel audio systems are known, a conventional stereo system of which has two channels with corresponding transducers, such as loudspeakers, which together form the audio sound. By controlling the sound level and / or other audio parameters or properties, a virtual audio source can be created, typically located between transducers. In order to fully enjoy the spatial effect of stereo, the listener needs to be in the region roughly halfway between the transducers, outside of which one of the two channels is dominant and the stereo effect will be lost. [0003] Modern audio systems typically have five or six channels that together form the audio sound. In a so-called "5.1" multi-channel audio system,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04S3/00
CPCH04S7/302H04R3/002H04S3/00
Inventor K·范雷克
Owner KONINK PHILIPS ELECTRONICS NV