Patent ID: 8693706

Claim:
A pseudo bass generating apparatus, comprising: a first 4 th -order low pass filter configured to cut out high-frequency components having a frequency higher than a first predetermined cutoff frequency from an input signal; an absolute value circuit configured to output an absolute value of an output signal of the first 4 th -order low pass filter; a clip circuit configured to clip the output signal of the first 4 th -order low pass filter with predetermined positive and negative limit values; a multiplier configured to multiply the output signal of the first 4 th -order low pass filter with a predetermined coefficient; a first adder configured to subtract an output signal of the multiplier from an output signal of the clip circuit; a second adder configured to add an output signal of the first adder and an output signal of the absolute value circuit; a second 4 th -order low pass filter configured to cut out high-frequency components having a frequency higher than a second predetermined cutoff frequency from an output signal of the second adder; and a third adder configured to add the input signal and an output signal of the second 4 th -order low pass filter.