Setting a TransMod source to uni-polar or bi-polar operation

By default, all TransMod modulation sources act as uni-polar sources. In other words, the modulation occurs only in one direction - from the initial Source value towards the maximum modulation value. The modulation depth can be positive (increases the parameter's value) or negative (decreases the value), but not both.

You can also set each source to act in a bi-polar way, so that the modulation occurs in both directions from the initial Source value.

In the following example, LFO1 is shown first as a uni-polar source, modulating the Delay time control.

After right-clicking on the LFO1 TransMod button, it is then set to bi-polar mode by clicking on Bi-polar modulator in the TransMod source context menu that appears. The modulation subsequently occurs in both directions, as shown by the indicator that moves to show the current value of the parameter after being modulated.


tm uni bi 1

tm uni bi 2

Right-click on the TransMod button
and click on 'Bi-polar modulator'


Note the real-time indicator showing the current value as a result of switching to bi-polar mode


To return a modulation source to uni-polar operation, use the Uni-polar modulator function on the TransMod source context menu.

Managing TransMod modulation

Displaying which TransMod sources are modulating a parameter

To see which TransMod sources are modulating a Bloom parameter, move the mouse over the control. Any TransMod sources which contain destination modulation depths on the parameter flash on the interface.

Control context menu

Right-click on a Bloom parameter to display its context menu, which contains several functions relating to managing TransMod modulation.

tm control context_N

Remove modulation from control

Click this function to remove the modulation depth on this control for the currently selected TransMod source.

Remove all modulation from control

Click this function to remove the modulation depths on this control for all TransMod sources that contain modulation depths on it.

TransMod source context menu

Right-click on any TransMod modulation source button to display its context menu. The Uni-polar modulator and Bi-polar modulator functions have been previously discussed.

tm source context

Remove all modulation destinations

Click this function to remove destination modulation depths for all parameters modulated by this TransMod source.

Adjusting modulation depths with MIDI CCs or host automation

Bloom's MIDI Learn system makes it possible to assign controls and controls' TransMod modulation depths to MIDI continuous controllers. This is useful for changing the amount of modulation over time for a specific parameter.

Note: it is also possible to modulate the Gain controls for each internal modulation device to vary the intensity of each of these TransMod sources over time - this varies the intensity of the entire modulation source, which affects all destination parameters being modulated by the source.