Lfo - Advanced Mode - Roland SH-01A User Manual

LFO - ADVANCED MODE

LFO Advanced Mode may seem like a strange option, and considering we are looking at a modern iteration of a
classic monosynth which is not widely celebrated for it's LFO or deep modulation options it's easy to ovelook this
feature. But when you place the SH-10A into LFO Advanced more, the audio-rate speed of the LFO mode opens up a
world of sound design options that get even better in UNI/POLY modes.
It is only mentioned in the official manual, but its potential will be missed by many who are unfamiliar with audio-rate
modulation., or otherwise underestimating the depth of this synth. The power of the SH-01A is not completely
understood until you dig deep into LFO advanced mode. So I encourage you to explore and discover for yourself how
deep this can go.
To enter advanced LFO mode press the MENU button and scroll to the following and choose Adv
LFO MODE
LFOn - LFO MODE
For more about the system settings on the SH-01A see page 23
FREQUENCY MODULATION [FM]
The audio-rate of the Advanced LFO in the SH-01A can modulate the pitch of the VCO from slight vibrato to
harmonic-rich sidebands reminiscent of the FM synthesis made famous by the Yamaha DX7. The six waveforms of
the LFO will produce different effects and tuning of an arpeggio or sequence in octaves and fifths (via LFO RATE) will
produce pleasant musical results. Use snappy envelopes and disharmonic intervals for FM percussion patches.
PULSE-WIDTH AUDIO RATE MODULATION [PW-ARM]
Modulating the width of the pulse wave of the VCO is a go-to sound in the original SH-101. This movement gives this
mono-oscillator SH-01A a similar sound to the detuning of two oscillators. Typically, this is modulated with a slow LFO
rate for a pronounced sweeping effect. However, when pulse width is modulated by the audio-rate Advanced LFO,
interesting harmonics are created resulting in a much thicker tone. In UNISON mode, the added movement and
output may knock your headphones off. Beware!
FILTER FREQUENCY FM [VCFFM]
FREQ in the VCF section is the cutoff frequency of the filter, that can be modulated by either ADSR (ENV) or LFO
(MOD). A slow LFO modulation will sweep the frequency of the filter for that iconic synth sound. But modulating the
VCF at audio-rate can lead to some unique textures that can easily escape to the wild side! By utilizing a slow
envelope and subtle MOD values, a hard-sync, zipper-like effect can be had taking the SH-101 to places never heard
before.
AMPLITUDE MODULATION [AM]
Amplitude Modulation is best known for slow, pulsing, tremolo like effects when the LFO raises and lowers the
volume of the VCA. But when the LFO extends into audio-rate, ring modulation like textures are created that can add
some serious beef to a single oscillator. The different LFO waveforms will each have a different effect on these
textures.
SINE WAVE FM [SINEFM]
A hidden waveform in the SH-01A is a sine wave created by raising the resonance of the VCF to full and tuning the
FREQ. With full KYBD tracking, the sine wave can be played via the keyboard to pitch. In this sine wave mode, no
oscillator is required to produce the purest of tones. This sine wave can be frequency modulated by raising the
Advanced LFO to audio-rate and tuning the harmonics via the MOD slider. With an arpeggio, sustaining envelope and
POLY Mode, you can recreate a series of clanging bells or tuned FM percussion with a snappy envelope.
- 0r0 -
- Adv -
13
Original
Advanced