Propellerhead Reason Spécifications télécharger pdf (Page 245)

THE EFFECT DEVICES

243

Pattern Controlled Filter - An Example

This example shows how to use the ECF-42 and the Matrix to create pattern

controlled filter effects. Proceed as follows:

1. Start with an empty Song.

2. Create a Mixer.

3. Create a Subtractor Synthesizer.

An Init Patch will work fine for these examples.

4. Create an ECF-42.

5. Create a Matrix Pattern Sequencer.

If you flip the rack around, you can see that the audio out from the Subtractor

is passed through the ECF-42 and then on to the Mixer. The Matrix Curve

CV is connected to the ECF-42 Frequency CV parameter, and the Matrix

Gate CV is connected to the ECF-42 Env Gate input.

6. Select the Track connected to the Subtractor (given that you are

handling MIDI input via the sequencer) so that you can play it from

your keyboard.

If you play a few notes and turn the ECF-42 filter freq knob, you should hear

the sound being filtered.

7. Draw a Gate pattern in the Matrix, using mixed velocity values.

Draw only a Gate pattern, not a Curve pattern.

8. Set both the Env.Amt and Vel knobs on the ECF-42 to about “40”.

9. Click the Run button on the Matrix panel.

10. While in Run mode, hold a chord down on your keyboard.

Now you should hear the envelope (controlling the filter) being triggered

with every gate step.

D By increasing the Env.Amount, you determine how much the enve-

lope parameters should affect the filter frequency.

D By increasing the Vel. parameter, you determine how much the gate

velocity should affect the filter frequency.

✪ If the filter effect isn’t very noticeable, try lowering the filter fre-

quency, and raising the Res value.

11. Set both the Env.Amt and Vel knobs on the ECF-42 to “0”.

12. With the Matrix still playing, draw a Curve pattern in the Matrix pat-

tern window.

Now, you should hear the filter frequency being modulated by the curve pat-

tern. By combining the various parameters you can create many new filter ef-

fects.

D You can also control the ECF-42 from other devices with CV and/or

Gate outputs.

Triggering the ECF-42 via MIDI

To trigger the envelope in the ECF-42, proceed as follows:

1. Create a sequencer track for the ECF-42.

This is easiest done by bringing up the context menu for the device and se-

lecting “Create Sequencer Track for XX” (where “XX” is the name of this

particular filter device).

2. Record or draw some notes on the sequencer track.

Remember that the envelope takes the note length and velocity into account.

The note pitches doesn’t matter.

3. Play back the track.

The actual notes will not be heard (since the track is connected to the ECF-

42, which produces no sound in itself) but the envelope will be triggered ac-

cording to the notes.

D You can even control the envelope “live” via MIDI: just set MIDI in-

put to the sequencer track for the ECF-42 and play your MIDI instru-

ment!

To route MIDI input to a track, click in the In column in the track list, so that

the MIDI connector symbol appears next to the track name.

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Propellerhead Reason Spécifications Page 245

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