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dBm, dB(mW)
Science; Acoustics
Power relative to 1 miliwatt. No reference impedance is assumed, though 600 ohms is common in audio equipment.
noise mapping
Science; Acoustics
For noise mapping the Lden or LDEN also known as the day-evening-night level is used. Noise maps published on the internet are widely used in Europe and are becoming used in the ...
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