| 摘要 |
A sound field control device includes a surround decoder for decoding an input surround encode signal and generating three channel signals of L, C and R to be reproduced in front left, front center and front right and one channel signal of S to be reproduced in the rear, output terminals for outputting the three channel signals, a first reflected sound generation section generating a reflected sound of the signal S, a second reflected sound generation section generating another reflected sound signal of the signal S, a first adder adding the reflected sound signal generated by the first reflected sound generation section and the signal S together, a phase shifting section shifting phase of the reflected sound signal generated by the second reflected sound generation section according to frequency of the reflected sound signal, a second adder adding a reflected sound signal provided by the phase shifting section and the signal S together, and output terminals for outputting signals of RL and RR channels for reproduction in rear left and rear right positions or reverse positions. At least one of the first and second adders adds the reflected sound signal and the signal S together at a rate at which a value obtained by dividing level of the reflected sound signal by level of the signal S will become 0.5 or over.
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