| 摘要 |
PURPOSE: A digital sound correction filter design method and a system thereof are provided to prevent the deterioration of sound quality caused by nonlinear section amplification when designing a digital sound correction filter. CONSTITUTION: A measuring device generates a test signal. A signal synchronization unit(431) synchronizes the test signal and a test signal for nonlinear correction. A linearity/nonlinearity estimating unit(432) estimates the linearity or nonlinearity of each section of the synchronized test signal, and extracts the nonlinearity of each section. A linear section correction filter design unit(433) designs a correction filter for the estimated linear section. A nonlinear section correction filter design unit(434) designs a correction filter for the estimated nonlinear section. |
