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Speaker array control method and speaker array control system

A technology of speaker array and control method, applied in speaker distribution signal, frequency/direction characteristic device, signal processing and other directions, can solve the problem that sound signals cannot be transmitted effectively, and achieve the effect of enhancing sound quality and suppressing interference signals

Active Publication Date: 2013-10-30
WISTRON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if figure 1 As shown, the main beam 122 of the output signal of the existing loudspeaker array 12 is directed towards the front of the video wall 10. When the audience 20 is located on the left and right sides of the video wall 10, the sound signal sent by the loudspeaker array 12 cannot be effectively transmitted to the The location of the audience 20

Method used

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  • Speaker array control method and speaker array control system
  • Speaker array control method and speaker array control system
  • Speaker array control method and speaker array control system

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Embodiment Construction

[0032] see Figure 2 to Figure 5 , figure 2 It is a schematic diagram of splicing multiple small-sized TVs 300 into a large TV wall 30 according to an embodiment of the present invention. image 3 It is a functional block diagram of a loudspeaker array control system 3 according to an embodiment of the present invention, Figure 4 for figure 2 A schematic diagram of one of the columns of the loudspeaker array 32, Figure 5 Lobe plots before and after optimization of the sound wave. like figure 2 As shown, the television 300 has built-in a pair of left and right channel speakers 320 for playing sound signals. Therefore, when multiple small-sized TVs 300 are spliced ​​to form a large TV wall 30 , the speakers 320 of all the TVs 300 will form a speaker array 32 . It should be noted that the TV 300 generally refers to various display devices or other electronic devices with built-in speakers 320 . In addition, the speaker array 32 does not need to be combined with the vi...

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Abstract

The invention discloses a speaker array control method. The speaker array control method includes steps of detecting a position of an audience located in front of a speaker array, wherein the speaker array includes N speakers and N is a positive integer larger than one; defining a target and a non-target with respect to an i-th speaker of the N speakers according to the position of the audience, wherein i is a positive integer smaller than or equal to N; calculating a weighting vector for the i-th speaker according to the target and the non-target; adjusting a directionality of an output signal of the i-th speaker by the weighting vector and reducing energy of a plurality of side lobes of the output signal of the i-th speaker; and controlling the i-th speaker to output the adjusted output signal when the energy of each of the side lobes is smaller than a threshold.

Description

technical field [0001] The invention relates to a loudspeaker array control method and a loudspeaker array control system, in particular to a loudspeaker array control method and a loudspeaker array control system that can adjust the directivity of the output signal of the loudspeaker and suppress other interference signals according to the position of the audience. Background technique [0002] With the vigorous development of narrow-frame TVs, it is expected that multiple small-sized narrow-frame TVs will be spliced ​​into a large video wall to meet consumers' requirements for visual enjoyment. see figure 1 , figure 1 It is a schematic diagram of a large TV wall 10 formed by splicing a plurality of small-sized TVs 100 in the prior art. like figure 1 As shown, the existing TV 100 has a built-in pair of left and right channel speakers (speaker) 120 for playing audio signals. Therefore, when multiple small-sized TVs 100 are spliced ​​to form a large video wall 10 , the sp...

Claims

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Application Information

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IPC IPC(8): H04R1/20
CPCH04R2430/20H04R2499/15H04R3/12H04R1/20
Inventor 伍湘杰吴逸群单贯纶
Owner WISTRON CORP