JPH0423400U

JPH0423400U -

Info

Publication number: JPH0423400U
Application number: JP6527990U
Authority: JP
Priority date: 1990-06-20
Filing date: 1990-06-20
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図は本考案実施例スピーカ装置の基本構成
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……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 a vehicle interior and its relationship with the listener; Fig. 2 is a configuration diagram showing the basic configuration of the speaker 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.

Claims

[Scope of claim for utility model registration] 1. Speaker devices installed on the left and right are 2
The speakers form a double sound source arranged horizontally, and the normal line passing through the center of the straight line connecting the two speakers of the left speaker device is the direction of the reflective object such as the door panel or window on the right side. While facing,
The speaker device on the right side is installed at a predetermined position in the vehicle interior so that the normal passing through the center of the straight line connecting the two speakers faces the left side door panel or reflective object such as a window. In order to adjust the sound pressure level in the normal direction of each speaker device in a frequency band excluding a low frequency band with broad directivity, the two speakers are mutually connected to form a single dipole-like sound source. At least one of the speaker circuits is connected to a phase correction means so as to be driven while maintaining a predetermined phase difference, and the radiation power level is adjusted in a frequency band in which the radiation power of the speaker device forming the dipole-like sound source is reduced. An in-vehicle stereo playback device characterized by comprising playback level correction means for correcting. 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.