Systems for and methods of assessing urinary flow rate via sound analysis. A control timer is started according to the initial message and an expiry of the control timer before an indication of the bearer establishment triggers a release for the connection. This reproduces pulse-code-modulated sound waveform data capable of simultaneously reproducing over a plurality of sets of sound channels represented by a product of M and N. The specimen being scanned is a semiconductor wafer or a photomask.