TC-Helicon PERFORM-VE, Справочное руководство

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How it Works: Clocks, Loop Length & Tempo
Perform-VE’s tempo matching depends on whether external MIDI clock is driving Perform-VE or not.
Let’s consider the case when no MIDI clock is coming in. In this situation you don’t have a MIDI cable or USB
cable supplying MIDI clock messages to Perform-VE from any external device or instrument. This means
Perform-VE uses its own master clock, which is updated via the TAP tempo button and whenever you record a
drum loop.
Once you have armed recording, the looper is waiting (flashing red) to record either an audio loop or a drum
loop.
To record a drum loop: Press kick, snare or headphone to begin recording drum events at whatever tempo you
like, remembering hit the loop button on the final beat of the last bar.
To record an audio loop: Press loop to begin recording audio at whatever tempo you like, pressing loop a second
time on the final beat of the last bar.
Regardless of loop type, Perform-VE will analyze the loop length and decide whether it is a 1 bar, 2 bar, 4 bar or
8 bar pattern at a valid tempo between 80 and 160 BPM (Beats Per Minute). The clock tempo of Perform-VE will
be updated to match the loop and the LOOPER button will turn green to indicate play mode.
Now that your loop has a defined length, you can press loop again (turning LOOPER red) to overdub additional
audio and drum events. These overdubs will not have an effect on the tempo or on the drum or audio loop
lengths.
NOTE: if you record your drum loop first, you can make audio loops that are multiples of the drum loop in
length, up to ten seconds in length.
The alternative looper setup is to have MIDI clock coming in from an external instrument or a computer running
audio workstation software. In this situation, Perform-VE is the slave to the external device and any loops you
record will need to be made in time with the flashes shown on the TAP button.
One advantage of external clocking is that odd bar patterns (3, 5, 7 and up) can be recorded as loops, and
playback will be perfectly synchronized with your external gear such as drum machines, arpeggiators and the
like.
Unless you record your loop perfectly in time at the current tempo, it won’t sound musically pleasing - this is
where Looper Quantize comes in.