Boss GT-1 Parameter Manual / Sound List page 18

Controllers
Parameter Value
0–100,
BPM ª – ˜
When set to BPM, the value of each parameter will be set
according to the value of the "MASTER BPM" specified for each
WAVE RATE
patch. This makes it easier to achieve effect sound settings that
*2
match the tempo of the song.
* If, due to the tempo, the time is longer than the range of
allowable settings, it is then synchronized to a period either
1/2 or 1/4 of that time.
Select one of the following to specify the change produced by
the wave pedal.
SAW
WAVEFORM
*2
TRI
SINE
*1 The INT PDL TRIGGER, INT PDL TIME, and INT PDL CURVE parameters are
enabled when the SOURCE parameter is set to INT PEDAL.
*2 The WAVE RATE and WAVEFORM parameters are enabled when the
SOURCE parameter is set to WAVE PEDAL.
18
Explanation
This determines the time spend for one cycle of
the assumed EXP Pedal.