A Multichannel Digitalized System for the Automatic Recording of Shallow Water Ambient Noise Data

摘要

A system is described which permits the automatic sampling and digital recording of the filtered outputs from several trans¬ducers in the 1/3 octave bands from 16 to 100 cps. The signals are presented in digital form on a printed paper tape.nFour transducers were used in this particular application, but the system described is flexible, so that additional trans¬ducers may be used. For transducers having different sensitivities or responding to different dynamic parameters (e.g., pressure or velocity) a correction is required to obtain absolute levels.