| 摘要 |
PROBLEM TO BE SOLVED: To provide a non-audible murmur pickup microphone (NAM microphone) capable of picking up a non-audible voice, and converting it into a voice signal that a listener and a voice recognition means easily recognize and then outputting the voice signal with simple constitution. SOLUTION: The NAM microphone X includes an NAM propagation unit 12 as a soft member which is brought into contact with a skin surface 1a to propagate a non-audible murmur (NAM) propagated in the human body, a microphone 11 which transduces the NAM propagated in the NAM propagation unit 12 into an electric signal, and a high-pass filter 22 which performs high-pass filter processing of about 1000 Hz in cutoff frequency for a signal of a voice obtained by the microphone 11. COPYRIGHT: (C)2008,JPO&INPIT
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