Arturia KeyStep 37 MIDI Keyboard Controller and Sequencer - Manual (Page 34)

3.1.5. Selecting Strum type
The Strum knob emulates the effect of strumming notes on a guitar. When you move a pick
or your finger across the strings from low to high with a downstroke the strings will sound
with a fixed delay. The lowest, 6th string will sound first, followed by the 5th to 1st string.
When you strum faster the distance between the notes becomes shorter.
When turning the strum knob to the right from the neutral 12 o'clock position, the lowest
notes in the chord will sound first: the chord generator emulates a guitar downstroke.
Turning the knob further right will increase the delay between the notes until at 50 the
maximum delay is reached. Turning even further you'll see how the values change to
quantized values ranging from 1/64 to 1/4.
The Strum knob can emulate both a downstroke strum (by turning the knob right fron the
neutral position) as well as an upstroke strum (by turning the knob left fron the neutral
position). In the neutral twelve o'clock position all notes will sound simultaneously. When
moving the knob to the right, more and more delay is added to the strum until at 3 o'clock
the strum reaches its maximum delay with value 50.
When turning the knob beyond '50', the speed of the strum becomes tempo dependent. To
achieve the slowest possible strum set the tempo rate to 30 (the minimum rate) and the
strum delay to maximum (4).
When turning the knob to the left from its center position a chord will be played as an
upstroke strum. More and more delay is added to the strum until at 9 o'clock the strum
reaches its maximum delay with value -50.
When turning the knob beyond '-50', again the speed of the strum becomes tempo
dependent. To achieve the slowest possible strum set the tempo rate to 30 (the minimum
rate) and the strum delay to maximum (-4).
In the lowest quadrants (with values greater than 50 and -50), the distance between the
notes is quantized to the following values: 1/64, 1/32t, 1/64d, 1/32 , 1/16t , 1/32d, 1/16 , 1/8t , 1/
16d, 1/8 , 1/4t , 1/8d, 1/4. In the above line values with 'd' attached to them are dotted values;
a dotted note is 1.5 times the base note value. If the 1/4th note has a duration of 1 second,
a dotted 1/4th will have a length of 1.5 seconds. Values with 't' attached to them are triplet
values; a triplet quarter note is 2/3rd the length of a quarter note.
29 Arturia - User Manual KeyStep 37 - Shift Functions