Distance estimation using sound signals
A distance estimation, audio signal technology, applied in the directions of speaker distribution signal, sound wave re-radiation, loudspeaker, etc., can solve the problem that the ranging equipment cannot be located practically, the resolution of the measurement system is reduced, the size of the large audio beam spot, etc. problem, to achieve the effect of improving spatial sound reproduction, accurate spatial perception, and small beam spot size
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[0064] The following description focuses on an embodiment of the invention applicable to calibrating a spatial sound reproduction system based on audio environment geometry determined from distance measurements. However, it will be appreciated that the invention is not limited to this application, but may be applied in many other contexts and in many other applications.
[0065] Figure 1 shows a speaker system setup for a conventional five-channel surround sound spatial sound reproduction system, such as a home theater system. The system includes a center speaker 101 providing a center front channel, a left front speaker 103 providing a left front channel, a right front speaker 105 providing a right front channel, a left rear speaker 107 providing a left rear channel, and a right rear speaker 109 providing a right rear channel. The five speakers 101-109 together provide a spatial sound experience at the listening position 111 and allow a listener at this position to experience...
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