| 摘要 |
PURPOSE:To attain ease of listening of information by applying limiter (amplitude limit) to an output level in response to the state of an error rate so as to decrease a noise level thereby decreasing the noise of a voice output including a pulsative noise at deterioration of the error rate. CONSTITUTION:A digital signal 1 outputted from a demodulation circuit is inputted to a synchronizing signal circuit 2. An analog output signal 7 is obtained via a de-interleave circuit 3, a data error detection and correction circuit 4, a data output circuit 5 and a DA converting circuit 6. An amplitude limit circuit 15 controls dividingly a region of a predetermined amplitude and the amplitude of the output of the DA converting circuit 6 is limited at the analog level. An error rate detection circuit 16 takes the detecting rate of a synchronizing signal of a synchronizing signal detecting circuit 2 as the error rate and controls the level of the amplitude limit circit 15 in response to the detection rate. |
