Patch Edit

LFO1/LFO2

LFO (Low Frequency Oscillator) creates cyclic changes. Each tone has two LFOs, and these can be used to apply change to pitch, filter cutoff

frequency, amp level, and pan.

Using the LFOs

An LFO applied to pitch creates vibrato, applied to filter cutoff frequency creates a wah effect, and applied to amp level creates tremolo. When

LFO is applied to pan, a distinctive auto-pan effect is produced.

LFO settings can also be used to do things such as cyclically exchanging two tones. For example, to cyclically exchange tones 1 and 2, specify the

same LFO effect for each, and set the LFO depth to opposite polarities (+/-) for the amp level.

*The parameters of LFO 1 and 2 are the same.

Parameter

Value

Description

 

 

 

LFO1(2) Waveform

SIN, TRI,

LFO waveform

#

SAWU,

SIN: sine wave TRI: triangle wave SAWU: sawtooth wave SAW-D:sawtooth wave (inverted)

 

SAWD,

SQR: square wave RND: random wave

 

SQR, RND,

BD-U:a waveform that lets the LFO output waveform rise to the reference level and holds it there

 

BD-U,

BD-D:a waveform that lets the LFO output waveform fall to the reference level and holds it there

 

BD-D, TRP,

TRP: trapezoidal wave S&H: sample and hold wave (LFO value will change once each period)

 

S&H, CHS,

CHS: chaos wave

 

XSIN,

XSIN: sine wave that reverses between positive and negative at an extremely short interval

 

TWM, STRS,

TWM: modified triangle wave STRS: stair-step wave VSIN: modified sine wave suitable for vibrato

 

VSIN,

M001–M113:the waveform will change continuously from a sine wave to sample & hold

 

M001–M113

* If you select “BD-U” or “BD-D,” set the Key Trigger (p. 64) parameter to “ON.” There will be no effect

 

 

if you set it to “OFF.”

LFO1(2) Rate #

0–127, note

Speed of the LFO cycle

 

 

* The chaos waveform has no cycle. If you select the chaos waveform, the rate setting will be ignored.

Offset

-100– +100

Offset level of the LFO waveform

(LFO Offset)

 

Adjusts the waveform upward or downward.

Rate Detune

0–127

Amount by which the LFO rate will be changed

(LFO Rate Detune)

 

 

Delay Time

0–127

Time from when you press (or release) a pad until the LFO amplitude begins to change

(LFO Delay Time)

 

 

Delay Time KF

-100– +100

Amount by which the Delay Time will be affected by the note you play

(LFO Delay Keyfol-

 

Modifies the Delay Time parameter according to the note you play, relative to C4 (middle C). Specify

low)

 

a positive (+) value if you want the LFO effect to be applied more quickly as you play higher notes,

 

 

or specify a negative (-) value if you want a greater delay to occur before the effect is applied. Higher

 

 

settings will produce a correspondingly greater change.

Time

 

 

 

 

 

 

 

 

 

 

 

 

 

+100

 

 

 

 

 

 

 

+50

 

 

 

 

 

 

 

0

 

 

 

 

 

 

 

-50

 

 

 

 

 

 

 

-100

Key

C1

C2

C3

C4

C5

C6

C7

 

Fade Mode

On<, On>,

How the LFO effect is applied

(LFO Fade Mode)

Off<, Off>

On< (ON-IN):The effect will be applied gradually after you press the pad.

 

 

On> (ON-OUT):The effect will be applied when you press the pad, and will gradually disappear.

 

 

Off< (OFF-IN):The effect will be applied gradually after you release the pad.

 

 

Off> (OFF-OUT):The effect will be applied as long as you hold down the pad, and will gradually

 

 

disappear when you release the pad.

Fade Time

0–127

Rise (or decay) time for the LFO effect

(LFO Fade Time)

 

 

Key Trigger

OFF, ON

Selection for whether the beginning of the LFO cycle will be aligned to the timing at which you press a

(LFO Key Trigger)

 

pad (ON), or will not be aligned (OFF)

Pitch Depth #

-63– +63

Depth to which the LFO will affect the WG pitch

(LFO Pitch Depth)

 

 

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Roland MC-909 owner manual LFO1/LFO2, Using the LFOs