Most sequencers time-stamp MIDI data in terms of "clock pulses". For example, a sequencer may have a clock resolution of 96 pulses per quarter note. This means that 96 clock pulses are counted off for the duration of each quarter note (ie, a quarter note is held for 96 pulses). Because an eighth note is half as long as a quarter note, this means that an eighth note is held for 48 clock pulses. Since a half note is twice as long as a quarter note, the half note is held for 192 clock pulses.

The charts below show how many clock pulses are in each note value for various PPQN (pulses per quarter note) resolutions. For example, the first chart is used if your sequencer has a 96 PPQN clock resolution. Note values start with a whole note and diminish down to a 128th note. (Some PPQN resolution do not divide evenly to support certain note values. An unsupported note value is indicated by --).

96 PPQN

Whole   384    Dotted Whole    576   Whole Triplet   256
Half    192    Dotted Half     288   Half  Triplet   128
Quarter  96    Dotted Quarter  144   Quarter Triplet  64
Eighth   48    Dotted Eighth    72   Eighth Triplet   32
16th     24    Dotted 16th      36   16th Triplet     16
32nd     12    Dotted 32nd      18   32nd Triplet      8
64th      6    Dotted 64th       9   64th Triplet      4
128th     3    Dotted 128th     --   128th Triplet     2

192 PPQN
Whole   768    Dotted Whole   1152   Whole Triplet   512
Half    384    Dotted Half     576   Half  Triplet   256
Quarter 192    Dotted Quarter  288   Quarter Triplet 128
Eighth   96    Dotted Eighth   144   Eighth Triplet   64
16th     48    Dotted 16th      72   16th Triplet     32
32nd     24    Dotted 32nd      36   32nd Triplet     16
64th     12    Dotted 64th      18   64th Triplet      8
128th     6    Dotted 128th      9   128th Triplet     4

240 PPQN
Whole   960    Dotted Whole   1440   Whole Triplet   640
Half    480    Dotted Half     720   Half  Triplet   320
Quarter 240    Dotted Quarter  360   Quarter Triplet 160
Eighth  120    Dotted Eighth   180   Eighth Triplet   80
16th     60    Dotted 16th      90   16th Triplet     40
32nd     30    Dotted 32nd      45   32nd Triplet     20
64th     15    Dotted 64th      --   64th Triplet     10
128th    --    Dotted 128th     --   128th Triplet     5

384 PPQN
Whole  1536    Dotted Whole   2304   Whole Triplet  1024
Half    768    Dotted Half    1152   Half  Triplet   512
Quarter 384    Dotted Quarter  576   Quarter Triplet 256
Eighth  192    Dotted Eighth   288   Eighth Triplet  128
16th     96    Dotted 16th     144   16th Triplet     64
32nd     48    Dotted 32nd      72   32nd Triplet     32
64th     24    Dotted 64th      36   64th Triplet     16
128th    12    Dotted 128th     18   128th Triplet     8