Roland Boutique JX-03, User Manual

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II. Functions for Sound Creation
DCO-1 / DCO-2
DCO is the digitally controlled oscillator that controls the pitch and creates two types of waveforms which are the
sound source of the synthesizer. Compared to VCO (Voltage Controlled Oscillator), DCO has superior stability.
The operations and functions of the DCO are virtually the same as those of the VCO.
DCO-1 This is Oscillator 1 in your synth voice.
RANGE SELECTION
This is to change the pitch range of the DCO in one octave steps from 2’ to 64’
(2’, 4’, 8’, 16’, 32’, 64’) 8’ is standard.
WAVEFORM SELECTION
This is to change the output waveform of the DCO
Select from sine wave, triangle wave, sawtooth wave, asymmetrical pulse wave, square wave, pink noise,
and white noise.
FREQUENCY MODULATION
LFO SWITCH
This allows the LFO to modulate the pitch of DCO-1. It is useful for vibrato and other pitch effects. Turn it
on, and adjust the LFO shape, rate and speed. Listen to the results. A little creates subtle and natural
results, where as a lot can create freaky weirdo sounds.
ENV SWITCH
This allows the Envelope to control the pitch of DCO-1. It is useful for sound shaping over time based on
the wave shape of the envelope. Slow attack will produce a slow rise in pitch. A long release will produce a
slow pitch change after the key is released. Turn this on and play with the envelope of a sound and listen to
the changes.
DCO-2 This is Oscillator 2 in your synth voice.
RANGE SELECTION
This is to change the pitch range of the DCO in one octave steps from 2’ to 64’
(2’, 4’, 8’, 16’, 32’, 64’) 8’ is standard.