Accession Number : AD0777717

Title :   Recovery of Acoustic Pulse Waveforms Using Calculator-Controlled Signal Processing,

Corporate Author : NAVAL RESEARCH LAB WASHINGTON D C

Personal Author(s) : Moore,W. E.

Report Date : 08 MAR 1974

Pagination or Media Count : 23

Abstract : An electronic calculator, a digital recorder, and suitable interfaces have been assembled to provide an inexpensive signal averaging system for the recovery of weak acoustic pulse waveforms. Periodic pulse waveforms between 25 and 300 kHz, with pulse repetition frequency typically less than 50 Hz, are sampled at rates indicated by sampling theory up to a maximum sampling rate of 2 MHz. The highest frequency which can be resolved is thus one MHz. Sampled waveforms are accumulated, averaged, and made available via a plotter and paper tape punch. (Author)

Descriptors :   *Acoustic signals, *Signal processing, Waveforms, Data acquisition, Digital systems, Plotters, Punched tape

Subject Categories : Computer Hardware
      Acoustics

Distribution Statement : APPROVED FOR PUBLIC RELEASE