4ms Sampler Kullanıcı Kılavuzu - Sayfa 6

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Next, let's try shortening the loop: turn the Length knob down a bit. As you turn Length

down from 100% to 50%, the length/tempo will go from the full sample file length to

under a second. From 50% to 0%, the length/tempo gets very short (~250ms down to

~8ms), and a decay envelope is applied to make it percussive.

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Length

The Length CV jack can also be used to change the Length. It accepts voltages from 0V

to +5V.

Length

By now you should see how changing the Length moves the end point of the loop. The

starting point of the loop is set by the Start Pos. Try turning this knob to see how this

changes your loop. The knob works by percentage of sample file time: so setting Start

Pos to 50% will make the sample start from the half-way point. Setting Start Pos to

Start Pos.

100% doesn't give you much sample left to play, so you'll hear a short blip.

The Start Pos. CV jack can also be used to change the Start Pos. It accepts voltages

from 0V to +5V.

Start Pos.

Start Pos

shifts entire

sample window (start and

end points)

Length

changes end point

Pitch

stretches window when

Length > 50%

Reverse

The Sampler can also play samples backwards.

Simply tap the Reverse button to toggle reverse

or forward playback. The button will be blue

Reverse

when it's in reverse mode, and off when it's in

forward mode. In reverse mode, it plays from the

ending position towards the starting position.

You also can fire a trigger into the Reverse jack

to toggle forward/backwards play.

Reverse

Try this: hit Reverse while a long sample is playing forwards. The sound will reverse

immediately and start playing backwards towards the start position. You can even keep

hitting Reverse rapidly to keep a sample "up in the air".

When playing in reverse while Length is less than 50%, an attack-only envelope will be

applied to the playback (as opposed to the decay-only envelope applied to forward

playback with Length under 50%)

Notice that changing Start Pos does not change your tempo; it shifts the

starting and ending points of the loop together, keeping a constant time.

On the other hand, Length changes the total time by changing the end

position and keeping the starting point constant.

Let's do an experiment and see how Pitch and Length are related to the

tempo of a loop. Set Length to 75% and turn Pitch to a few different

settings while you loop a sample. Do you see how the tempo of the loop

changes as you change Pitch? It should get shorter as Pitch gets higher.

Now set Length to about 40% and play with Pitch. Do you see how the

tempo of the loop does not change? That's because with Length under

50% the playback time is constant (regardless of Pitch). With Length

over 50%, the audio sample data that's played is constant, even though

it's stretched or shrunk. So if you set Start Pos and Length to capture a

particular part of a sample (let's say it's a human voice saying the word

"hello"), then as long as Length is over 50%, it will always play the word

"hello" even as you adjust the Pitch.

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Pro tip: The tempo of a loop can be

harnessed by using the

Out

jack. This jack will fire a

trigger whenever the sample

loops, restarts, or stops

playing. Try patching

Out

to a clock divider (such

as the RCD or QCD) for a

sample-based master clock!

End