The 1/1 and 1/3 real time octave analysis is useful for reducing noise from OA equipments, and home appliances such as air conditioners or printer. In this example, four microphones are set at bystander position surrounding the measurement object to obtain the noise. It also can be set A, C or Z-weighting sound filter for a microphone. And, measured signal by the microphones are input to the DS-3000 series to perform octave analysis. Then you can see the accurate noise data numerically with various display functions, such as data comparison between before and after noise countermeasure, 3D display or trend display (time series variation) of specified frequency band. Up to 64ch-system also can be assembled.

The power spectrum max. OA function of the DS-0321 enables the spectrum analysis at the time of maximum overall (maximum sound pressure). Moreover, this FFT analysis software also can be used for narrow band analysis.

The OS-2740 sound quality evaluation pack (sold separately) can quantify the sound by using six psychoacoustic parameters of [Loudness], [Sharpness], [Roughness], [Fluctuation Strength], [AI], and [Tonality].