The super resolution processing technique such as a MUSIC (MUltiple SIgnal Classification) algorithm has been proposed for the location finding (LF) of the signal sources of the received signals using the array sensors. Recently, the MUSIC is investigated for the point sources emanated electro-magnetic wave and sound wave. Then, when the MUSIC will be applied to LF of sound sources for trouble diagnosis of the mechanical machine, the sound source cannot be always regarded as the point source, but it must make even efforts to investigate the LF estimation characteristics of the spread sources. This paper describes that the MUSIC were investigated for the near field sound sources by the computer simulation and the experimental examination. And it is clear that the MUSIC was enable to properly estimate for the near filed sound source even if the sound source has spread width.