TS-12 Musician’s Manual Section 11 — Sequencer Parameters
11
SWING Range: 50 to 74%
When you specify a SWING percentage value, you are defining the offset amount that every
second quantize point (known as the swing note) will be delayed. In keeping with the swing
implementation in most MIDI sequencers, the SWING range is from 50% (the same as straight
quantization) to 74% (a tick before the next higher note value). A setting of 66 is equivalent to
setting the quantization to triplets. The following examples show what happens when the user
quantizes to 1/8 notes with various settings of SWING. Q denotes every straight 1/8 note
quantize point, while S denotes the swing eighth quantize point.
16th 16th
8th
At 50%
At 66%
At 74%
Quantize points:
Q = Straight
S = Swing
SWING
Time
01 25 49 73 01 Clocks58
= 50%
= 74%
100%50% 60% 74%
8th
16th 16th
1/4 note
At 50% *
* 50% is Equivalent to No Swing
= 60%
The SWING setting is the percentage of the time difference between the two Straight quantize
points, and it is used to position the Swing quantize point. As the Swing setting increases from
50%, the Swing quantize point is moved closer to the following Straight quantize point.
The SWING percentage actually defines the point between the two straight quantize points. In
other words, at 96 ppq, 60% swing means that between two quarter notes, the swing eighth will
occur at the 60% mark, or at clock 58 (0.60 x 96). The default value for this parameter is 50%
when the sequencer is initialized. Once it is changed, the last value is always remembered.
PERCENT Range: 000 to 100
While the Quantize Note Value and SWING parameters determine the position of the quantize
points, the PERCENT and RANDOM parameters determine where the key events will be placed
in relation to the quantize points. The PERCENT parameter specifies how much the key event
will move toward the calculated quantize point. A PERCENT value of zero would mean that the
key events would not move any distance toward the quantize point. A PERCENT value of 100
would mean that the key event would be placed exactly on the quantize point. A PERCENT
value of 50 will move the event half way to the quantize point.
The following diagram illustrates this. Again, Q and S represent the straight quantize and swing
quantize points respectively. The original source track is shown, followed by the quantized
versions at 0, 25, 50, and 100% quantization.
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