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Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.

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At least 1,045 records · Page 58

On some damped oscillatory integrands

Impoper integrals appearing in cross correlation of responses of two single degree of freedom systems to bandwidth limited white noise, deriving Laplace inversion formulas

Rodin, E. Y.↗

Multifunction audio digitizer for communications systems

Digitizer accomplishes both N bit pulse code modulation /PCM/ and delta modulation, and provides modulation indicating variable signal gain and variable sidetone. Other features include - low package count, variable clock rate to optimize bandwidth, and easily expanded PCM output.

Monford, L. G., Jr.↗

Tone-burst technique measures high-intensity sound absorption

Tone-burst technique, in which narrow-bandwidth, short-duration sonic pulse is propagated down a standing-wave tube, measures sound absorbing capacity of materials used in jet engine noise abatement. Technique eliminates effects of tube losses and yields normal-incidence absorption coefficient of specimen.

Powell, J. G.↗

AM baseband telemetry techniques

Techniques and circuits used in designing AM highly flexible telemetry system comprising single sideband/double sideband/constant bandwidth compatible system - space application

Clubb, J. J.↗