Propellerhead Reason - 4.0 Instrukcja Operacji Pobierz pdf (Strona 295)

DR. REX LOOP PLAYER

293

Pitch Bend and Modulation Wheels

The Pitch Bend wheel is used for “bending” the pitch up or down. The Modulation

wheel can be used to apply various modulation while you are playing the loop. Virtually

all MIDI keyboards have Pitch Bend and Modulation controls. Dr.Rex also has two

functional wheels that could be used to apply real time modulation and pitch bend

should you not have these controllers on your keyboard, or if you aren’t using a key-

board at all. The wheels mirror the movements of the corresponding MIDI keyboard

controllers.

Pitch Bend Range

The Range parameter sets the amount of pitch bend when the wheel is turned fully up

or down. The maximum range is “24” (=up/down 2 Octaves).

Modulation Wheel

The Modulation wheel can be set to simultaneously control a number of parameters.

You can set positive or negative values, just like in the Velocity Control section. The

following parameters can be affected by the modulation wheel:

Setting Number of Voices - Polyphony

This determines the polyphony, i.e. the number of voices, or slices, Dr.Rex can play si-

multaneously. For normal loop playback, it is worth noting that slices sometimes “over-

lap”. Therefore, it is recommended that you use a polyphony setting of about 3-4

voices when playing REX files. If you are “playing” slices via MIDI, the polyphony set-

ting should be set according to how many overlapping slices you want to have.

! Note that the Polyphony setting does not “hog” voices. For example, if

you are playing a file that has a polyphony setting of ten voices, but the

file only uses four voices, this won’t mean that you are “wasting” six

voices. In other words, the polyphony setting is not something you need

to consider if you want to conserve CPU power - it is only the number of

voices actually used that counts.

Audio Quality Settings

These two parameters provide ways of balancing audio quality vs. conservation of

computer power.

High Quality Interpolation

When this is activated, the loop file playback is calculated using a more advanced in-

terpolation algorithm. This results in better audio quality, especially for loops with a lot

of high frequency content.

D High Quality Interpolation uses more computer power - if you don’t need

it, it’s a good idea to turn it off!

Listen to the loop in a context and determine whether you think this setting makes

any difference.

! If you are using a Macintosh with a G4 or G5 (Altivec) processor, turning

High Quality Interpolation off makes no difference.

Low Bandwidth (BW)

This will remove some high frequency content from the sound, but often this is not no-

ticeable (this is especially true if you have “filtered down” your loop). Activating this

mode will save you some extra computer power, if needed.

Parameter

Description

F. Freq This sets modulation wheel control of the filter frequency parameter.

A positive value will raise the frequency if the wheel is pushed for-

ward. Negative values invert this relationship.

F. Res This sets modulation wheel control of the filter resonance parameter.

A positive value will increase the resonance if the wheel is pushed

forward. Negative values invert this relationship.

F. Decay This sets modulation wheel control for the Filter Envelope Decay pa-

rameter. A positive value will increase the decay if the wheel is

pushed forward. Negative values invert this relationship.

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