JPH0243098U - - Google Patents

Description

[Brief explanation of the drawing]

1 and 2 are circuit diagrams of first and second embodiments of the sound image localization control circuit according to the present invention, FIG. 3 is a circuit diagram showing a conventional sound image localization control circuit, and FIG. 4 is a circuit diagram showing the conventional sound image localization control circuit and the present invention. FIG. 3 is an output frequency characteristic diagram of the sound image localization control circuit of FIG. 1, 4, 5, 11, 14, 21, 24...Amplifier, 2, 12, 22...Delay circuit, 3, 13
, 23...Low pass filter circuit (LPF), 6
, 16, 26... High pass filter circuit (HPF
).

Claims (1)

[Claims for Utility Model Registration] (1) Difference signal generation means for generating a difference signal from two left and right channels of audio signals, and low frequency attenuation for attenuating the low frequency components of the difference signal obtained from the difference signal generation means. means, delay time addition means for attenuating the high frequency component of the output signal of the low frequency attenuation means and adding a predetermined delay time; and a delay time addition signal obtained from the left channel audio signal and the delay time addition means; and a subtraction means for subtracting the delay time added signal from the right channel audio signal, and supplying both signals obtained from the addition means and the subtraction means to left and right speakers, respectively. Features a sound image localization control circuit. (2) a first low-frequency attenuation means for attenuating the low-frequency components of the right channel acoustic signal; and a first difference signal from the signal obtained from the first low-frequency attenuation means and the left channel acoustic signal. a first difference signal generating means for generating a first difference signal; a first delay time adding means for attenuating a high frequency component of the first difference signal obtained from the first difference signal generating means and adding a predetermined delay time; a first addition means for adding the right channel audio signal and the delay time addition signal obtained from the first delay time addition means; and a second low frequency attenuation for attenuating the low frequency components of the left channel audio signal. means for generating a second difference signal from the signal obtained from the second low-frequency attenuation means and the right channel acoustic signal; a second delay time addition means for attenuating the high-frequency components of the second difference signal and adding a predetermined delay time; and a delay time addition signal obtained from the left channel acoustic signal and the second delay time addition means. and a second addition means for adding the two signals, and supplies both signals obtained from the first and second addition means to left and right speakers, respectively.