Abstract
The term “dBu” refers to voltage levels relative to 0.775 volts, regardless of load impedance. It is basically a holdover from an earlier era when power levels in signal transmission systems were expressed in dBm. The fundamental definition is:
where E is the voltage in volts.
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© 1994 Springer Science+Business Media New York
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Eargle, J.M. (1994). Voltage Ratios Expressed in dBu. In: Electroacoustical Reference Data. Springer, Boston, MA. https://doi.org/10.1007/978-1-4615-2027-6_102
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DOI: https://doi.org/10.1007/978-1-4615-2027-6_102
Publisher Name: Springer, Boston, MA
Print ISBN: 978-1-4613-5839-8
Online ISBN: 978-1-4615-2027-6
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