dB dBu dV PPM and VU Comparison Table - sengpielaudio
 
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dB dBu dBV Comparison Table
Level and level display (scale)
for PPM meters and VU meters

Multiplier -
voltage ratio relative to
specified
reference

Scale

dB



dBu



dBV
 
PPM
ARD /
IRT


 
PPM
EBU-
Scale


 
PPM
UK-
Scale



VU
UK-
Scale


10 20 7.746 V 10.0 V        
4 12 3.084 V 3.981 V   12 7  
  11 2.748 V 3.548 V +5      
  10 2.449 V 3.162 V +4      
  9 2.183 V 2.818 V +3      
  8 1.946 V 2.512 V +2   8 6    4
  7 1.734 V 2.239 V +1      
2 6 1.546 V 1.995 V   0        2
  5 1.377 V 1.778 V −1      
  4 1.228 V 1.584 V −2   4 5    0
1.414 3 1.094 V 1.412 V −3      
  2 975 mV 1.259 V −4      
  1 869 mV 1.122 V −5      
Ref. = 1 0 775 mV 1.000 V −6   0 4   −4
  −1 690 mV 891 mV −7      
  −2 615 mV 794 mV −8      
 0.7071 −3 548 mV 708 mV −9       −7
  −4 489 mV 631 mV  −10   −4 3   −8
  −5 436 mV 562 mV        
 0.5 −6 388 mV 501 mV  −12     −10
  −8 308 mV 398 mV  −14   −8 2  
0.25 −12 195 mV 251 mV  −18 −12 1  
  −18 97.5 mV 126 mV  −24      
  −24 48.9 mV 63.1 mV        
  −30 25.4 mV 31.6 mV        
0.01 −40 7.75 mV 10.0 mV        
  −50 2.45 mV 3.16 mV        
0.001 −60 775 µV 1.00 mV        
  −70 245 µV 316 µV          

Notice:
dBu = 20×log (V/0.775) where voltage is irrespective of impedance
dBm = 20×log (V/0.775) where voltage is measured across 600 ohms
dBV = 20×log (V/1)
Voltage data are always RMS values, unless otherwise noted.

Calculator: Correlation between sones and phons
Subjectively perceived loudness (volume), objectively measured sound pressure,
and theoretically calculated sound intensity

Conversion of sound units (levels): Sound pressure level SPL, sound pressure, and intensity
Decibel Table - Comparison Chart - dB Scale
Adding acoustic levels of sound sources
 
 
 
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