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The Rate slider adjust the rate of the LFO in beats per minute. When Link to Tempo is activated, the slider is ignored and the LCD always displays the current session tempo.
The Waveform selector (Triangle, Ramp, Sine, etc.) determines the wave shape used by the LFO. The waveform shape in use is graphically depicted by the movement of the scanning bars in the Modulation meter.
By default, the LFO cycles continuously through the selected waveform. The LFO can be set to cycle through the selected waveform just once, or it can be triggered by MIDI Beat Clock, the Envelope, or manually.
When the Single trigger is selected, the LFO will cycle thru the waveform once only and then stop.
When the Beat Clock trigger is selected, the LFO synchronizes to MIDI Beat Clock. TL EveryPhase receives Beat Clock signal every 64th-note. The Duration menu determines how often the Beat Clock signal triggers TL EveryPhase, ranging from every 16th-note to every 4 bars. When Beat Clock signal is received, the Beat Clock trigger light blinks brightly. Using the Beat Clock function enables TL EveryPhase to produce consistent phasing results, ensuring that the LFO is always in the same state at each beat.
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When the Envelope trigger is selected, the LFO is triggered directly by the Envelope detector, which listens to the audio signal. If the Side-Chain Input selector in the Envelope section is activated, then the side-chain audio signal is used instead. When activated, the Envelope light blinks brighter when an audio signal is detected. The threshold level can be adjusted using the Threshold control in the Envelope section.
If the Envelope Detector is completely released due to previous portions of the audio signal going above threshold, a trigger occurs the next time the audio goes above the threshold level. Another trigger will not happen until the Envelope Detector has completely released after the audio goes below the specified threshold. Thus, increasing the Release slider will reduce the rate at which triggers can occur and decreasing the Release time increases the rate at which triggers can occur.
When the Manual trigger is selected, the LFO is triggered manually. This can be especially useful if you want to trigger the LFO using Pro Tools automation.
With control surfaces and automation, the Manual trigger acts like an on/off switch and triggers the LFO every time it changes state.