| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a signal processor which can reduce noise appropriately. <P>SOLUTION: A signal processor (100) comprises a signal processing section (250) which calculates, based on the frequency domain signal of a frame determined to include noise according to timing information indicating the time when noise is generated in collecting sounds and based on a noise frequency domain signal that is a frequency domain signal corresponding to the noise, a noise-reduced frequency domain signal that is a frequency domain signal obtained by reducing the noise from the frequency domain signal of the frame. The signal processing section (250) sets a lower limit based on the frequency domain signal of a frame collected at a different time from the frame determined to include noise, and determined not to include noise, or based on a noise-reduced frequency domain signal calculated in processing a frame processed before a frame in question. <P>COPYRIGHT: (C)2012,JPO&INPIT |
