Скачать или смотреть Episode 10 - What is a dB?

In this episode we will discuss the basics of the decibel, or dB. The decibel is a logarithic measurement scale. The episode starts with a little review on the properties of the logarithm, followed by the definition of the decibel as a measure of power ratio, and how absolute values can be characterized by dB when a reference is specified, finally how to use dB in measurement equations and uncertainty analysis is described.
Most of this episode is based on the LearningMeasure.com course

EE103 - Introduction to the decibel.
(http://www.learningmeasure.com/course...)

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