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This work presents the result of a study of the acoustic quality of noise emitted by a three-phase, induction motor fed with various modulation techniques (Pulse Width Modulation, PWM). It complements the classical study of noise emitted by rotating electrical machines, based on acoustic emission levels. For this, the psychoacoustic parameters of Specific and Total Loudness, as well as Total Roughness...
Sediment affected water resources require frequent and accurate suspended sediment concentration (SSC) data for proper design, operation and management. The traditional method of collecting water samples is inadequate to provide such large amount of SSC data. Recently, the principles based on optics, acoustics, density, electric properties have shown promising results in the direction of providing...
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