Patent ID: 8180071

Claim:
A pseudo deep bass generating device comprising: a low frequency component signal extraction means for extracting a low frequency component signal from an input signal; an amplitude value compression signal generation means for compressing an amplitude value of the low frequency component signal extracted by said low frequency component signal extraction means to output an amplitude value compression signal which is the low frequency component signal whose amplitude value has been compressed; a first multiplication means for multiplying the amplitude value compression signal generated by said amplitude value compression signal generation means by the low frequency component signal extracted by said low frequency component signal extraction means so as to output an even-order harmonic component signal which is a result of the multiplication of said amplitude value compression signal by said low frequency component signal; a second multiplication means for multiplying the even-order harmonic component signal outputted from said first multiplication means by the low frequency component signal extracted by said low frequency component signal extraction means so as to output an odd-order harmonic component signal which is a result of the multiplication of said even-order harmonic component signal by said low frequency component signal; and an adding means for adding the even-order harmonic component signal outputted from said first multiplication means and the odd-order harmonic component signal outputted from said second multiplication means so as to output a harmonic component signal which is a result of the addition of said even-order harmonic component signal and said odd-order harmonic component signal.