| 摘要 |
PROBLEM TO BE SOLVED: To provide a sound quality control circuit constructed by using a digital signal processor with which characteristics without unnatural acoustic feeling can be obtained with a simple structure. SOLUTION: The circuit is provided with a primary digital filter 1 and a secondary digital filter 2, and the primary and secondary filters 1, 2 are arranged so as to be connected in series. That is, bass and treble functions can be realized by a combination of the filters inside the digital signal processor, which has been realized in a conventional sound quality control circuit. |
