MIDI Velocity, dB, Dynamics, dB% and Differences Table (table enhanced & updated)

MIDI Velocity, dB, Dynamics, dB% and Differences Table

   
In this table: Velocity, dB, Dynamics and diff. values are in cross-comparison.

              v············ top2botm ············v 
             +---------------------+------------------------+
             |    real decibels    | SF2 attenuations (144) |
  +----+-----+------+-----+--------+------------------------|
  | *1 |     |      |     |        |cumula-|differ-|reverse |
  |vel.| dyn.|  dB  |dB(%)|diff(dB)| -tive | -ence |  diff. |
  |----+-----+------+-----+--------+-------+-------+--------|
  | 127| fff |   0.0| 100 |     0  |     0 |     0 |   -5.5 |
f | 112| ff  |  -2.2|  86 |  -2.2  |   5.5 |   5.5 |   -6.8 |
  |  96| f   |  -4.9|  71 |  -2.7  |  12.3 |   6.8 |   -7.7 |
  |  80| mf  |  -8.0|  57 |  -3.1  |  20.0 |   7.7 |   -9.8 |
m |....|.....|......|.....|........|.......|.......|........| mezzo(*2)
  |  64| mp  | -11.9|  44 |  -3.9  |  29.8 |   9.8 |  -12.5 |
  |  48| p   | -16.9|  31 |  -5.0  |  42.3 |  12.5 |  -17.5 |
p |  32| pp  | -23.9|  19 |  -7.0  |  59.8 |  17.5 |  -30.2 |
  |  16| ppp | -36.0|   8 | -12.1  |  90.0 |  30.2 |  -54.0 |
  |   0|-off-| -57.6|   0 | -21.6  | 144.0 |  54.0 |      0 |
  +----+-----+------+-----+--------+-------+-------+--------+
     *3                                            ^\ botm /^      
                                                     \2top/ 

* diff. shows the difference between two successive values;
  ordered by top to bottom.



Please note:

  • MIDI velocity (V) values are linear. // n+16
  • dB calculations are logarithmic. // dB = 40 log (V/127)
  • Musical dynamics are average values.



 1 : Because of the "Velocity:0" means "Note-Off" at the same time, there is a difficulty in calculating the dynamic range from 1 to 127.

If this range was 128, the calculation could be very easy. But the maximum value of the 7bit is 127.
We also do not have a chance to reach 128 because we exclude the zero value from the calculation.

So I made a correction on the very top point ("fff" area)
So I made a correction on the middle point and I have shown the dynamics on "piano-family" (mp, pp, etc.) with even-numbers and dynamics on "forte-family" (mf, ff, etc.) with odd-numbers

*2 (mid. point): Between the values "mp" and "mf" there is should have (theoretically) an imaginary a "m" (mezzo) value (but not used anywhere). The velocity value of this dynamic is 72. // Notice: The Band-in-a-box software uses 72 as the default velocity value.


*3 (maximums) : 0=off, 1-16 = "ppp", 17-32 = "pp", ... ,  65-79 = "mf", ... , 113-127 = "fff"


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