| 摘要 |
PROBLEM TO BE SOLVED: To reduce a circuit scale without sacrificing sound quality. SOLUTION: This signal processor consists of an A/D converter 42 for A/D- converting an input signal, a signal processing part 44 for delaying the A/D- converted input digital signal by a prescribed time compared with this input digital signal and obtaining plural digital delayed signal at a level lower than that of the input signal, a D/A-converter 48 for D/A-convert these digital delayed signal, and an adding means 36 for adding the plural D/A-converted delayed signals and an analog input signal. Since the input signal can be added to the plural delay signals generated based on the input signal without changing the state of the input signal being an analog signal, miniaturization and cost reduction of an IC chip is attained, while no sacrifice at all in sound quality, etc., is made. |
