Roland XP-30 用户手册

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The XP-30 consists of a sound source and controllers.

fig.1-01.e

The XP-30 sound source produces sound by responding to 
commands in the form of MIDI messages received from its 
controllers. It will also produce sound by responding to 
commands received from various external devices it can be 
connected to.

Controllers include the keyboard, front panel sliders and 
pedals which are connected to their respective rear panel 
jacks. Adjusting these controllers enable you to produce or 
modify sound.

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XP-30 sounds are made up of the following types:

In the XP-30, the Tone is the smallest class of sound. Each 
Tone consists of one sound. But when you play the XP-30 
you will mostly play a Patch, which is made up of several 
Tones. Tones therefore are the elements which collectively 
form a Patch. 
Tone configuration:

fig.1-02.e

Using the Wave Generator, you select a waveform and set its 
pitch.

With the Time Variant Filter, you modify the waveform’s 
frequency characteristics.

With the Time Variant Amplifier, you set volume level and 
set the sound’s position in a stereo soundfield.

You use Envelope to initiate changes to occur to a sound over 
time. There are separate Envelopes for the WG (pitch), TVF 
(filter) and TVA (volume). For example, to modify a sound’s 
attack and decay time, you would use TVA Envelope to 
adjust volume changes to the sound over time.

Use the LFO to create cyclic changes (modulation) in a 
sound. The XP-30 has two LFOs. Either one or both can be 
applied to effect the WG (pitch), TVF (filter) and/or TVA 
(volume). To illustrate this control’s action, you can apply an 
LFO to modify the WG (pitch) to create vibrato. If the LFO is 
used to modify the TVA (volume), you’ll get tremolo.