Expert Sleepers Silent Way v1.7.3 - Manual (Page 17)

Speed Controls
Two controls set the basic frequency of the LFO - the
large ‘Speed’ knob on the left and the ‘Multiplier’ drop-
down beside it.
The Speed knob sets the LFO frequency in Hz (cycles
per second). The Multiplier drop-down lets you choose
a number by which the frequency is multiplied. The op-
tions are 0.1, 1, 10 and 100. So for example if the Speed
knobs is set to 5Hz and the Multiplier is set to 100, the
actual frequency of the LFO will be 500Hz.
Sync Controls
The other large knob, labelled ‘Beats’, and the
controls above the Multiplier drop-down to-
gether provide another way to specify the LFO
frequency, based on the tempo of the song as
specified by the plug-in’s host application.
There are five options for the ‘Sync’ drop-down:
• Free - The frequency is set by the Speed
knob, as previously described.
• Tempo - The frequency is set by the ‘Beats’
knob, the ‘Divisor’ drop-down and the ‘Triplet’ button.
• Transport - As Tempo, but additionally the phase of the LFO is locked to the host
transport (so e.g. the start of the LFO cycle is locked to the start of the bar). The
‘Phase’ knob lets you set a constant offset for the LFO cycle as against the transport
cycle that it’s locked to.
• Quadrature - The LFO is locked to the other LFO, but with a phase offset determined
by the Phase knob. For possible applications of this mode, see for example the
Doepfer A-143-9 module (
here ).
Note that the effect of the ‘Phase’ knob is not reflected in the graphical waveform
display (see below).
• Start/Stop - In this mode the LFO is no longer really an LFO. Its output is controlled
by whether the host’s transport is playing or stopped. The actual levels generated are
set as if the start/stop signal were a very slow square wave i.e. you should set a non-
zero value for the ‘Square’ mix control (see below).
In Tempo and Transport modes, the Divisor sets the base unit for the sync calculation e.g.
‘1/4’ indicates quarter notes. If the Triplet button is pressed, the Divisor is converted to its
triplet equivalent. The Beats setting then multiplies the length of the note set by the divi-
sor. So for example if the Divisor is 1/8 and the Beats is 3.0, the cycle length of the LFO