JPH0475498U - - Google Patents

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本考案の１チヤンネル時における一実
施例のブロツク図、第２図は第１図の要部ブロツ
ク図、第３図は第１図の装置配置図、第４図は１
チヤンネル時の動作特性図、第５図は２チヤンネ
ル時における一実施例の要部ブロツク図、第６図
は第５図の装置配置図、第７図は２チヤンネル時
の動作特性図、である。 ３……補正回路、４……遅延回路、５……適応
型フイルタ、８……マイクロホン。 Fig. 1 is a block diagram of one embodiment of the present invention at the time of one channel, Fig. 2 is a block diagram of the main parts of Fig. 1, Fig. 3 is a device layout diagram of Fig. 1, and Fig. 4 is a
FIG. 5 is a block diagram of the main part of an embodiment in the case of two channels, FIG. 6 is a diagram of the equipment arrangement of FIG. 5, and FIG. 7 is a diagram of the operating characteristics in the case of two channels. . 3 ... Correction circuit, 4... Delay circuit, 5... Adaptive filter, 8... Microphone.

Claims (1)

【実用新案登録請求の範囲】 (1) (a) 音響システムのスピーカより発生した
音響ソース信号を聴取位置で受音するマイクロホ
ン回路及び該マイクロホン回路の出力信号を変調
し且つ送信する変調送信回路を有する受音手段と
、 (b) 前記受音手段から送信される変調信号を
受信し且つ音響信号に復調する受信復調回路と、 前記音響ソース信号を遅延した遅延信号及び前
記受信復調回路で復調した復調信号を適応型フイ
ルタに入力して前記復調信号と遅延信号の差が最
小になるよう音響ソース信号を補正して音場補正
を行う補正回路と、 を備えることを特徴とする音場補正装置。 (2) 前記受音手段は前記音響システム本体から
離れた聴取位置で該音響システムの種々の操作を
行うワイヤレスリモコンに内蔵されていることを
特徴とする実用新案登録請求の範囲第(1)項に記
載の音場補正装置。[Claims for Utility Model Registration] (1) (a) A microphone circuit that receives an acoustic source signal generated from a speaker of an audio system at a listening position, and a modulation transmitting circuit that modulates and transmits the output signal of the microphone circuit. (b) a reception demodulation circuit that receives a modulated signal transmitted from the sound reception means and demodulates it into an acoustic signal; and a signal that is delayed from the acoustic source signal and demodulated by the reception demodulation circuit. A sound field correction device comprising: a correction circuit that corrects a sound field by inputting a demodulated signal into an adaptive filter and corrects an acoustic source signal so that the difference between the demodulated signal and the delayed signal is minimized. . (2) Utility model registration claim (1), characterized in that the sound receiving means is built into a wireless remote control that performs various operations of the sound system at a listening position remote from the main body of the sound system. The sound field correction device described in .