| 摘要 |
PROBLEM TO BE SOLVED: To properly eliminate a mechanism noise sound caused at photographing from a sound signal and recording the resulting sound signal. SOLUTION: A storage section 54 stores a plurality of spectral patterns of motor sound picked up in advance through a sound input section 51 (main microphone) as first noise spectral patterns. Further, a storage section 64 stores a plurality of spectral patterns of motor sound picked up in advance through a reference input section 61 (reference microphone) as second noise spectral patterns. In photographing, the second noise spectral in accordance with the motor sound obtained from the reference input section 61 is selected from the storage section 64 and the first noise spectral corresponding to the second noise spectral is selected from the storage section 54 and both are given to a subtract section 55. Thus, the noise component can properly be eliminated by subtracting the noise spectral with the same input characteristic as that of the spectral of the sound signal from the spectral of the sound signal obtained through the sound input section 51. COPYRIGHT: (C)2007,JPO&INPIT |
