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An Optimal Arrangement Method for Multiple Types of Loudspeaker Arrays

A loudspeaker array and layout method technology, applied in the direction of loudspeaker distribution signals, sensors, sensor components, etc., can solve the influence of control without consideration, control power of multi-type loudspeaker arrays, and optimal layout of multi-type loudspeaker arrays, etc. problems, to achieve optimal layout and maximize sound field control

Active Publication Date: 2022-06-03
AUTOMOBILE RES INST OF TSINGHUA UNIV IN SUZHOU XIANGCHENG +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above method mainly considers the speaker array optimization in the sound field control problem of a single area, and does not consider the influence of this area on the control of other areas.
[0004] To sum up, there are few studies on the optimal arrangement of multi-type speaker arrays, and the existing methods have not solved the problem of optimal arrangement of multi-type speaker arrays in the sub-area sound field control in the car, nor have they solved the problem of multi-type speaker arrays. Quantify control

Method used

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  • An Optimal Arrangement Method for Multiple Types of Loudspeaker Arrays

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Embodiment 1

[0043] Embodiment 1: The purpose of the present invention is to realize the optimal arrangement of the multi-type speaker arrays in the vehicle, and to lay the foundation for realizing the sub-regional sound field control in the vehicle.

[0044] The present invention proposes a method for optimizing the arrangement of multi-type speaker arrays used in a sub-regional sound field control system in a vehicle. The schematic diagram is as follows: figure 1 shown. figure 1 , 1 is a class 1 speaker r (1) , 2 is the k-th type of speaker r (k) , 3 is the class K speaker r (K) , that is, there are K types of speakers participating in sub-regional sound field control. For the optimal frequency band of the k-th type of speaker, 4 is the potential arrangement position of each type of speaker, 5 is the front area of ​​the car, which is recorded as the bright area, and 6 is the rear area of ​​the vehicle, which is recorded as the dark area. The method proposed in the present invention ...

specific Embodiment

[0126] Figure 5 , Image 6 and Figure 7 is the measured data in the embodiment of the present invention. In the present invention, a multi-type speaker array composed of 4 door speakers, 8 headrest speakers, 10 mid-high frequency speakers and 2 mid-subwoofer speakers is placed in the potential arrangement position, Figure 5 is the relative control increment of the single frequency signal (f a =350Hz), the threshold value of the relative control force increment is E G = 21dB, for this frequency range, the control power of the speaker array formed by the first 11 speakers has reached the limit, and the last 13 speakers are unnecessary. Image 6 It is the relative minimum control increment of the three multi-type speaker arrays in the control frequency range of 50Hz to 1500Hz. It can be seen from the figure that the control power of 24 speaker arrays and 16 speaker arrays in the entire optimized frequency band has reached the limit, while 10 A speaker array is not reachin...

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Abstract

The present invention relates to a method for optimizing the layout of multi-type loudspeaker arrays, which is applied to a sub-area sound field control system in a car, comprising the following steps: Step 1: determining the electro-acoustic transfer function of the sub-area sound field control system in a car; Step 2: according to The frequency response characteristics of various loudspeakers and the required optimized frequency bands determine the optimized frequency bands corresponding to various loudspeakers; Step 3: Using the electroacoustic transfer function, based on the control force increments of various loudspeakers at different potential placement positions, the Prioritize the potential placement positions; Step 4: Based on the optimized frequency bands corresponding to various loudspeakers, arrange the loudspeakers in order according to the priority ranking of the potential placement positions of various loudspeakers until the relative control increment of the array formed by the arranged loudspeakers is at Satisfy the demand in the required optimized frequency band. The invention can determine the quantity and position of various types of loudspeakers, realize the optimal arrangement of multi-type loudspeaker arrays in the vehicle, and ensure the maximum control force of the loudspeaker arrays.

Description

technical field [0001] The invention belongs to the technical field of in-vehicle sound field control, in particular to the technical field of optimization of multi-type speaker arrays, and is an optimal arrangement method for multi-type speaker arrays in a sub-regional sound field control system in a vehicle. Background technique [0002] With the continuous advancement of the intelligent process, the driving experience of the car has become more and more abundant. Among the numerous intelligent systems, the sub-regional sound field control system in the car has received close attention from major OEMs and mainstream suppliers due to its amazing experience and good practicability. When building sub-regional sound field control in the car, how to effectively arrange the speakers determines the control effect of the system, and the arrangement of multiple types of speakers is one of the first problems to be solved. [0003] Enomoto et al. proposed to optimize the speaker arr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04R1/40H04R3/12
CPCH04R1/403H04R3/12H04R2499/13Y02T10/40
Inventor 彭博常婉婉范佳亮韩强郑鹏郑四发
Owner AUTOMOBILE RES INST OF TSINGHUA UNIV IN SUZHOU XIANGCHENG