Roland SH-201 Manuale Utente

 

Creating sounds

 

The following diagram shows the basic process by which the SH-201 creates sounds.

 

fig.SH-Structure.e

 

There are three important elements that determine the character of a sound; the pitch, the brightness, and the volume.

On the SH-201, these three elements are specified by the following sections.

 

First, use the OSC section to specify the pitch. Next, use the FILTER section to specify the brightness. Finally, use the 
AMP section to specify the volume. This is the basic procedure for creating a sound.

In actuality, the brightness of the sound is dramatically affected by the waveform generated by the OSC section, but 
the process is as described above.

 

The OSC, FILTER, and AMP sections can vary the pitch, brightness, and volume of the sound over time.

For example, you can make the pitch fall momentarily at the beginning of each note, or make the volume of each note 
gradually increase.

The way in which some aspect of a note changes over time is called the “envelope.” The envelope is specified by the 
following sections.

• Pitch:

 

• Brightness:

 

• Volume:

 

 

The OSC, FILTER, and AMP sections can also be controlled by an LFO (Low Frequency Oscillator; p. 40) to cyclically 
vary aspects of the sound such as pitch (producing vibrato) or volume (producing tremolo).

Cyclic change applied to the pitch, tone, or volume in this way is called “modulation.”

The SH-201 has two LFO units, allowing you to simultaneously apply modulation of differing speeds and 
waveforms.

Control signals

Audio signals

Varies the brightness
as the sound begins 
or ends

Modulates the pitch,
the brightness, or 
the volume

Modulates the pitch,
the brightness, or 
the volume

Varies the pitch 
at which the 
sound begins

Specifies how the
sound begins and
ends

Mixes
waveforms

Specifies the 
brightness of 
the sound

Specifies the 
loudness of 
the sound

Adds depth or 
spaciousness

Generates the
waveform and
specifies the pitch

Generates the
waveform and
specifies the pitch

A patch suitable as a starting point for creating sound “from scratch” is provided at the end of preset group 
bank D. Use this patch as desired.

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