| 摘要 |
PROBLEM TO BE SOLVED: To execute sound pickup with a high S/N ratio without damaging frequency characteristics even in a state in which a sound source moves. SOLUTION: An output signal synthesizer 30 synthesizes and outputs a final digital audio signal SS from digital audio signals S-k (k=1-m) obtained by microphones 11-k (k=1-m). Extractors 20-k (k=1-m) output sound strength signals Es-k (k=1-m) from the digital audio signals S-k (K=1-m). A switching control unit 40 controls the output signal synthesizer 30 on the basis of the sound strength signals Es-k (K=1-m), so that a signal is outputted high in strength of a sound component. COPYRIGHT: (C)2007,JPO&INPIT |
