TW484335B - Accoustic device in the form of a loudspeaker system - Google Patents

Abstract

An acoustic device in the form of a loudspeaker system is described. The loudspeaker system has a plurality of distributed mode loudspeakers (1) each having a resonant bending wave panel (3) extending laterally of a principal axis (13) to define slots (11) therebetween. Exciters (5) are mounted on the panels (3).

Description

5. Description of the invention (1) The present invention relates to an application of a dispersion mode speaker. Several previously published patents have referred to the speaker in a decentralized mode, in particular WO97 / 09842 '. The operation of this speaker is driven by one or more signal electrical measuring converters that are light-closed by the board— Five patterns in the board. ^ W098 / 53638 describes a "tilted, arrayed, dispersed mode speaker. Most of the distributed mode speakers are in a flat array (ie, an array in which the speakers are arranged in a flat array and / or spaced apart from one another, and In which the plates are arranged in an array or an array extending in a plane of the sheet). According to the present invention, there is provided a speaker system including a plurality of distributed mode speakers spaced apart from each other along a major axis to form a plurality of slots therebetween, each distributed mode The speaker includes: a plate extending laterally on the main axis, and an exciter installed on the plate to make the plate vibrate and sound, in which sound is emitted from the slot. This configuration has two differences from the method described in No. W098 / 53638. : In the present invention, the plate is arranged along an axis and extends outward from the axis, and in No. 98/53638, the plate is arranged above and extends along the piece or plate; further, in the present invention, the sound is from the plate Between the plane and the direction of the normal line and the main axis can be at most 30 degrees, preferably at most 15 degrees. For this reason, the plate can be aligned with the main axis It extends vertically. A reflector can be placed on the straight end of the board. The board can be of different sizes, such as reducing the size along the main axis. Some or all of the boards can be driven by most actuators. The actuator can be changed in polarity Driven, the polarity can be selected to provide a desired universality. Instead of or in addition, the information provided by the exciter can be selected. -4- The paper size applies the Chinese national standard 484335 A7 B7 m% β ## 9! Office of Patent Application No. 12265 · This% Revised Specification Sheet (February 91) —and 丨〗 jL · ^ V. Phase Description of Invention Description (2) Delay and Filtering to Provide a Required Directionality The exciter may be located at a proximal center instead of the off-center positions of the plates described in WO97 / 09847. For a better understanding of the present invention, a specific embodiment will now be described by way of example only and with reference to the drawings. A simple illustration of a speaker array according to the present invention is shown in Fig. 1. The main components represent the symbol 1 dispersed mode speaker 3 flat panel 5 exciter 7 electrical connector 9 reflector 11 slot 13 main axis speaker system including along a main axis 1 3 One of the stacked dispersion mode speakers 1 separated from each other. Most of the dispersion mode speakers 1 each include a flat plate 3 extending in a plane perpendicular to the main axis 13 and an exciter 5 mounted and coupled to the flat plate. The plate 3 defines a slot n between each pair of adjacent pieces, and the actuator 5 is coupled to the electrical connector 7 to be connected to the electric driving device. In the embodiment, a reflector 9 is disposed on the stack. On one end (reflector end), the plates 3 are not necessarily the same size; the largest plate is adjacent to the reflector, and the linear size of plate 3 decreases exponentially along the main axis. These configurations are intended to be opposed to each other from the reflector end. The stack on the end emits sound mainly along the main thin line. This paper size applies the Chinese National Standard (CNS) A4 specification (210 X 297 mm). Description of the invention (Sound radiation is issued from the slot formed by the plate 3) i (as a conduit). Can be supplied from each supplier The signal of the exciter 5 changes the directivity of the sound output. The simplest way is to change the pole of the signal supplied to each exciter. In order to have greater control, the phase of the signal supplied to each exciter is again B, can introduce a delay and can apply frequency filtering, the reflector also affects the directivity. The stack can be regarded as-reverse ㈣; the radiation is preferentially emitted from the narrow end of the stack. = The installation volume is small and can generate-high power, Multiple actuators and boards: Used to prevent structural overload of the speaker and reduce the effect of air flexibility due to the absence of high pressure points in the air. The directionality of the device can be controlled over a wide range of frequencies. -6-

Claims (1)

6. Scope of patent application 1. An audio device in the form of a loudspeaker system, including ... along a main axis. The majority of the distributed mode speakers are spaced apart to form a multi-slot between them. A board extending laterally of the wire and an exciter mounted on the board causing the board to vibrate and sound. 2. If the audio device in the scope of patent application item i, the normal line of the plane of the board and the direction of the main axis at a maximum angle of 30 degrees. 3. The audio device according to item 2 of the patent application scope, wherein the board extends perpendicularly to the main axis. 4 · As for the sound device in the first scope of the patent application, on one end of the straight line formed by the board. 5 · If the audio device in the scope of patent application, the size. One of the reflectors is set in which the board has different 6. As in the audio device of the scope of application for patent No. 5, the board is reduced in size along the main axis. 7 · The audio device according to item 丨 of the patent application, wherein at least one of the plates is attached with a plurality of exciters. 8. The audio device as claimed in item 1 of the patent scope, wherein the exciter is driven with different polarities to provide a desired directivity. 9. The audio device according to item 丨 of the patent application scope, further comprising: connecting a soil board (a processor to provide a signal to the board, wherein the processor controls at least one phase of the signal provided by the exciter , Delay and filtering 'to provide a desired direction-direction]. This paper size is suitable for A4 specifications (2iGX297i: Jr ~ ----