| 摘要 |
PROBLEM TO BE SOLVED: To provide a sound processor increasing an SN ratio and extracting object sound from a sound source with high quality. SOLUTION: First electric signals outputted from a first microphone 1 to which the sound of a target sound source is inputted are amplified in an amplifier 14, and AD converted in an AD converter 18 and second electric signals outputted from a second microphone are amplified in the amplifier 16 and AD converted in the AD converter 20. In a delay device 22, for output signals from the AD converters 18 and 20, the input time error of the sound to the microphones 10 and 12 is compensated and a phase is matched. Signals indicating the difference of strength are prepared by a differential device 24. Under the condition that the target sound source is present near the microphones 10 and 12, the short distance sensitivity of the sound of the target sound source is improved and the high quality output signals of the format of an application electronic device can be outputted from a post stage circuit 28 by the difference signals of the high SN ratio. |
