Large-radiation angle six to nine-sound source speaker array

A loudspeaker array, radiation angle technology, applied in the frequency/directional characteristic device and other directions, can solve the problems of complex design and high use cost

Inactive Publication Date: 2013-06-05
NANJING UNIV
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The above methods are to widen the radiation angle by adjusting the source intensity and improve the uniformity of the speaker array radiation sound field, but there are disadvantages such as complex design and high cost of use.

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  • Large-radiation angle six to nine-sound source speaker array
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  • Large-radiation angle six to nine-sound source speaker array

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Embodiment Construction

[0033] The specific implementation method of the present invention will be described below in the form of examples.

[0034] according to figure 1 , when applying the present invention, it is necessary to feed signals with different amplitudes and phases to six to nine identical loudspeakers arranged in sequence, wherein the signal amplitude and phase assigned to each loudspeaker satisfy certain rules. There are many ways to achieve a similar purpose, such as using an independent channel operational amplifier circuit and a power amplifier circuit, designed so that each channel is first adjusted by a proportional operational amplifier for amplitude adjustment and positive and negative phase adjustment, and then driven by the power amplifier circuit to drive the speaker.

[0035] or according to figure 2 , feed the signal with the same amplitude and phase to six to nine designed different loudspeakers arranged in sequence, and all the loudspeakers can be driven by the same po...

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Abstract

The invention discloses a large-radiation angle six to nine-sound source speaker array. Signals with different amplitudes and phases are fed to six to nine identical speakers which are arranged sequentially to realize the optimization of the directivity of the six to nine-sound source speaker array. The six to nine-sound source speaker array ordinarily comprises six to nine sound sources which are transversely linearly or approximately linearly arranged. A six-sound source speaker array is optimized according to amplitude ratio of sound pressures of -0.14:0.6:-1:0.8:1:0.69. A seven-sound source speaker array is optimized according to the amplitude ratio of sound pressures of -0.49:1:-1:0:1:1:0.52. An eight-sound source speaker array is optimized according to the amplitude ratio of sound pressures of 0.15:-0.69:1:-1:-0.3:1:1:0.66. A nine-sound source speaker array is optimized according to the amplitude ratio of sound pressures of 0.15:0.41:-0.8:0.9:-0.7:-0.6:1:1:0.6. The degree of uniformity of the directivity of the large-radiation angle six to nine-sound source speaker array is remarkably increased, and a radiation angle is remarkably increased.

Description

technical field [0001] The invention relates to a method and a device for setting up a loudspeaker array, feeding signals with different amplitudes and phases to six to nine identical loudspeakers arranged in sequence, or feeding signals with the same amplitude and phase to six to nine speakers arranged in sequence Different speakers are designed so that each sound source can radiate sound signals of different amplitudes and phases that meet certain rules, and realize the optimization of the directivity of the six-source to nine-source speaker array, so that it has a wide range of operating frequencies. Radiation angle to improve the uniformity of the radiation sound field. Background technique [0002] Many occasions require a higher sound pressure level. Due to the limited sound energy radiated by a single sound source (such as a speaker unit), it is difficult to achieve a high enough sound pressure level. It is natural for people to think of using multiple sound sources. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04R1/20
Inventor 沈勇董桂官夏洁安康杨小军
Owner NANJING UNIV
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