logarithmic ratio, expressed in decibels, of the available power of the given source to the power that the device delivers to a load impedance under specified operating conditions Note 1 to entry: Transducer attenuation is given by
where Pa is the available power PL is the power that device delivers to a load impedance Note 2 to entry: This entry was numbered 561-03-20 in IEC 60050-561:1991.
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