| 摘要 |
<p>A voice analyzing apparatus is provided with a plurality of cascade-connected delay filter circuits (100-1 - 100-P). Each of delay filter circuits includes a delay circuit (113-i) for delaying a first input signal, a coefficient generating circuit (119-i, 120-i), and an operation circuit for generating first and second output signals, the first output signal representing the difference between the product of output signals applied from the delay circuit (113-i) and the coefficient generating circuit (119-i, 120-i) and a second input signal, and the second output signal representing the difference between the product of a second input signal and an output signal from the coefficient generating circuit (119-i, 120-i) and the output signal from the delay circuit (113-i). The coefficient generating circuit (119-i, 120-i) includes a correction circuit (120-i) for attenuating the product of output signal of delay circuit (113-i) and second difference signal, and a coefficient generator (119-i) for adding the output signal thereof to an output signal of the correction circuit (120-i) and then generating the result with a certain delay time.</p> |
