User Manual

SA240 Mercury Flanger User’s Guide 30
After the Mercury receives its first MIDI clock message, the function of the Speed Knob changes.
Instead of controlling the speed of the LFO directly, it controls the number of subdivisions are in the
LFO, using the MIDI clock as a basis for the tempo. One, two, three, or four subdivisions can be
created. Musically speaking, this means that the LFO can run at the rate of quarter notes, eighth
notes, triplets, or sixteenth notes. The following diagram shows the knob positions corresponding to
each subdivision, with the knob currently set to quarter notes:
The number of subdivisions can also be modified via MIDI using the Speed parameter. If you have
mapped a MIDI CC message to the Speed parameter, you can choose the number of subdivisions
using the following table:
MIDI CC Speed
Value
LFO
Subdivisions
Musical
Equivalent
0 to 31
1
Quarter Note
32 to 63
2
Eighth Note
64 to 95
3
Triplet
96 to 127
4
Sixteenth Note
The Mercury does not sync to MIDI timecode containing SMPTE timestamps.
USB
The Mercury’s USB port is plug-and-play ready for Windows and Mac computers. The Mercury uses
class-compliant drivers, so no special drivers are needed. Just power up the Mercury and connect it
to the computer using a USB cable. The computer should automatically recognize the Mercury, which
will be identified as “Source Audio One Series” in the operating system.
USB-MIDI
The Mercury will appear as a MIDI device in your computer’s operating system. As a result, the
Mercury can communicate with audio production software that utilizes MIDI, such as Pro Tools,
Ableton Live, Logic Pro, and more. MIDI messages can be sent directly to the Mercury using the USB
connection, which allows for full automation of the Mercury within host software such as a DAW. For
example, the depth or speed of the LFO can be automated by outputting MIDI continuous controller
messages from the host software to the Mercury via the USB connection.
Quarter Notes
Eighth Notes Triplets
3
Sixteenth Notes