| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a bass intensifier which amplifies low-frequency signals with reducing unnecessary amplification of fundamental wave components. <P>SOLUTION: An LPF 1 extracts low frequency signals 101 from voice signals 100. A harmonic generator 2 includes harmonic components of the low-frequency signals 101, and generates harmonic signals, the fundamental wave phase of which is same as that of the low-frequency signals 101. A phase adjuster 3 adjusts the fundamental wave phase of harmonic signals 102 so as to be the reverse phase of the low-frequency signals 101, and a level adjuster 4 adjusts the level of the low-frequency signals 101. A signal adder 5 adds harmonic signals 103 to low-frequency signals 104, and a signal adder 7 adds the voice signals 100 to signals 106. <P>COPYRIGHT: (C)2009,JPO&INPIT |
