INSTALLATION SOUND RECORDING AND REPRODUCING SYSTEM

摘要

PURPOSE:To listen to an installation sound clearly by using plural microphones so as to correct a detection sound data of a sound source and adding the data synchronizingly so as to eliminate surround noise. CONSTITUTION:A generating sound recording section uses plural microphones to record generating sound. Then an A/D converter section 1 converts the recorded analog data into a digital data. Moreover, a coding section 5 encodes the digital sound, A sound source detection section 2 applies noise elimination processing to the A/D-converted data in parallel with the storage to determine the sound source. A correction section 3 corrects the data based on the distance from the sound source determined by the detection section 2 to the recording microphones and the arrival time. Then a synchronization addition section 4 applies synchronization addition to the data of each channel subject to correction to attenuate a dark noise sound. Then a decoding section 6 decodes each channel data to be coded or the stored data 8 and a D/A converter section 7 applies D/A conversion to the data.