JPH0423399U

JPH0423399U -

Info

Publication number: JPH0423399U
Application number: JP6466390U
Authority: JP
Priority date: 1990-06-18
Filing date: 1990-06-18
Publication date: 1992-02-26

Description

[Brief explanation of the drawing]

第１図は車室内に於ける本考案実施例のスピー
カ装置の配置と受聴者との相互関係を示す平面図
、第２図は本考案実施例再生装置の基本構成を示
す構成図、第３図はダイポール音源の全放射パワ
ーの周波数特性図、第４図は再生レベル補正手段
の補正周波数特性図、第５図は実施例の変形例の
構成図、第６図は別の変形例の再生装置の駆動部
構成を示す構成図である。１はスピーカ装置（左チヤンネル）、２はスピ
ーカ装置（右チヤンネル）、Ｓａ，Ｓｂは夫々ス
ピーカ、３は受聴者（左側）、４は受聴者（右側
）、５はキヤビネツト、６ａ，６ｂは夫々増幅器
、７ａ，７ｂは夫々位相補正手段、７ｃはアナロ
グ位相シフタ、８ａ，８ｂ，８ｃ……夫々再生レ
ベル補正手段である。 Fig. 1 is a plan view showing the arrangement of the speaker device according to the embodiment of the present invention in the vehicle interior and its relationship with the listener; Fig. 2 is a configuration diagram showing the basic configuration of the playback device according to the embodiment of the present invention; The figure is a frequency characteristic diagram of the total radiated power of the dipole sound source, FIG. 4 is a corrected frequency characteristic diagram of the reproduction level correction means, FIG. 5 is a configuration diagram of a modification of the embodiment, and FIG. 6 is a reproduction of another modification. FIG. 2 is a configuration diagram showing the configuration of a drive section of the device. 1 is a speaker device (left channel), 2 is a speaker device (right channel), Sa and Sb are each a speaker, 3 is a listener (left side), 4 is a listener (right side), 5 is a cabinet, 6a and 6b are each Amplifiers 7a and 7b are phase correction means, 7c is an analog phase shifter, and 8a, 8b, 8c... are reproduction level correction means, respectively.

Claims

[Scope of claim for utility model registration] 1. Speaker devices installed on the left and right are 2
speakers are arranged horizontally to form a dual sound source, and the normal line passing through the center of the straight line connecting the two speakers of the left speaker device points toward the left listener, while the normal line passing through the center of the straight line connecting the two speakers of the left speaker device The device is installed at a predetermined position in the vehicle interior so that the normal line passing through the center of the straight line connecting the two speakers faces the right listener, and the device transmits a low frequency band with broad directivity in each left and right channel. In order to adjust the sound pressure level in the normal direction of each speaker device in the excluded frequency band, the two speakers are driven while maintaining a predetermined phase difference from each other so as to form one dipole-like sound source. As shown in FIG. Features of this in-vehicle stereo playback device. 2. In-vehicle device according to claim 1, wherein the predetermined phase difference given between the respective signals applied to the two speakers of the speaker device is 90° to 180°. stereo playback device. 3. The in-vehicle stereo reproducing apparatus according to claim 1, wherein the frequency band subjected to phase correction by the phase correction means is 100 Hz to 2 KHz. 4. In-vehicle stereo reproduction according to claims 1, 2, and 3 of the utility model registration claim, characterized in that the phase correction means and the reproduction level correction means are combined by an FIR digital filter. Device.