Roland owner manual Overview of the XP-30, XP-30 Configuration, Basic Configuration

Chapter 1. Overview of the XP-30

XP-30 Configuration

■Basic Configuration

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

fig.1-01.e

Sound source

section

Play

Controller section (controllers such as keyboard, pitch bend lever, etc.)

Sound Source

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

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.

■Classification of XP-30 Sound

Types

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

Tones

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
Tone	LFO 1	LFO 2
WG	TVF	TVA
Pitch	TVF	TVA
Envelope	Envelope	Envelope

audio signal control signal

WG (Wave Generator)

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

TVF (Time Variant Filter)

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

TVA (Time Variant Amplifier)

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

Envelope

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.

LFO (Low Frequency Oscillator)

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.

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