| 摘要 |
PROBLEM TO BE SOLVED: To provide a microphone system capable of suppressing degradation of a target sound signal more than prior art, without impairing the performance for removing the noise component from the target sound signal.SOLUTION: The processing executed by the CPU of a microphone system includes a step (S10) for acquiring a target sound signal from a first microphone provided toward a non-sound collection target, a step (S12) for specifying the first output level for the noise sound direction, on the basis of the directivity characteristics of the first microphone, a step (S14) for specifying the second output level of a second microphone for the noise sound direction, on the basis of the directivity characteristics of the second microphone, a step (S16) for correcting the noise sound signal outputted at a first output level to a new signal of second output level, by using the ratio of the first output level and second output level, and a step (S18) for removing the new signal from the target sound signal.SELECTED DRAWING: Figure 3 |
