Synonyms were used for: Schall
Search without synonyms: keywords:( Schall)

1–20 of 2,678 hits
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    Device for measuring sound in airplane engines

    Robrovsky, T | NTRS | 1924
    Keywords: SOUND - ENGINES , PHYSICS - SOUND

    The problem of noise in civil aircraft and the possibilities of its elimination

    Tucker, W S | NTRS | 1928
    Keywords: SOUND ANALYSIS , SOUND

    Sound analysis recording apparatus

    Okahara, M. | Engineering Index Backfile | 1937
    Keywords: Sound measuring instruments

    Report on Test on Buzzer, Type A-3 Submitted by Navy Yard, Portsmouth, N.H

    J. R. Coomes / W. B. Roberts | NTIS | 1937
    Keywords: Sound generators , Buzzers(Sound Equipment)

    Report of Test on Buzzer, Type A-3 Submitted by Navy Yard, Portsmouth, N. H

    J. R. Coomes / W. B. Roberts | NTIS | 1937
    Keywords: Sound generators

    Die Entstehung von Schneidentönen durch Wirbelbildung

    Documentation/Report
    Krüger, Friedrich | TIB AV-Portal | 1938
    Keywords: sound formation / acoustics

    Ultraschallversuche

    Experiment/Model Test
    Bergmann, Ludwig | TIB AV-Portal | 1939
    Keywords: sound wavelength

    An Electrodynamic Source for Low Frequency Underwater Sound

    by weber / hall | NTIS | 1945
    Keywords: Underwater sound generators , Underwater sound sources

    The problem of noise reduction with reference to light airplanes

    Theodorsen, Theodore / Regier, Arthur A | NTRS | 1946
    Keywords: SOUND - PROPELLERS

    Underwater Sound Equipment I. Listening Systems

    J. S. Coleman | NTIS | 1946
    Keywords: Underwater sound equipment , Underwater sound , Sound transmission

    Effect of distance on airplane noise

    Regier, Arthur A | NTRS | 1947
    Keywords: SOUND MEASUREMENT , SOUND TRANSMISSION , SOUND - PROPELLERS , SOUND ABSORPTION , SOUND - AIRPLANES

    Propeller-loudness charts for light airplanes

    Hubbard, Harvey H / Regier, Arthur A | NTRS | 1947
    Keywords: SOUND - PROPELLERS

    Comparison of Sound Emission from Two-blade, Four-blade, and Seven-blade Propellers

    Hicks, Chester W / Hubbard, Harvey H | NTRS | 1947
    Keywords: FORMULAS - SOUND - GUTIN PROPELLERS , SOUND - PROPELLERS

    Sound-level Measurements of a Light Airplane Modified to Reduce Noise Reaching the Ground

    Vogeley, A W | NTRS | 1948
    Keywords: SOUND MEASUREMENT , SOUND - ENGINES , SOUND - PROPELLERS , SOUND - AIRPLANES

    Sound from Dual-rotating and Multiple Single-rotating Propellers

    Hubbard, Harvey H | NTRS | 1948
    Keywords: SOUND - PROPELLERS

    Dynamometer-stand investigation of a group of mufflers

    Davis, Don D , Jr / Czarnecki, K R | NTRS | 1949
    Keywords: SOUND - ENGINES , SOUND - AIRPLANES

    Free-space oscillating pressures near the tips of rotating propellers

    Hubbard, Harvey H / Regier, Arthur A | NTRS | 1949
    Keywords: SOUND - PROPELLERS - PRESSURE , TEHORIES - SOUND - GUTIN

    Experiments in External Noise Reduction of Light Airplanes

    Beranek, Leo L / Elwell, Fred S / Roberts, John P | NTRS | 1950
    Keywords: SOUND - PROPELLERS , SOUND AIRPLANES

    Sound Measurements for Five Shrouded Propellers at Static Conditions

    Hubbard, Harvey H | NTRS | 1950
    Keywords: SOUND - PROPELLERS