Roland BK-5 - page 77

Makeup Tools (rhythms and SMF)

Backing Keyboard BK-5

in the negative direction, the fewer overtones will be

allowed to pass and the sound will become softer

(darker).

NOTE

For some sounds, positive (+) “Cut Off” settings will cause

no noticeable change because the preprogrammed “Cut

Off” parameter is already set to its maximum value.

Resonance

This is a parameter one invariably associates with a

synthesizer. When the “Resonance” value is increased,

the overtones in the area of the cutoff frequency will

be emphasized, creating a sound with a strong char-

acter.

NOTE

For some sounds, negative (–) “Resonance” settings may

produce no noticeable change because the resonance is

already set to the minimum value.

The following parameters allow you to set the

sound’s “envelope”. The envelope parameters affect

both the volume (TVA) and the filter (TVF). The cutoff

frequency will rise as the envelope rises and fall as

the envelope falls.

Attack (T)

This parameter adjusts the onset of the sound. Nega-

tive values speed up the attack, so that the sound

becomes more aggressive.

Decay (T)

This parameter adjusts the time over which the

sound’s volume and cutoff frequency fall from the

highest point of the attack down to the sustain level.

NOTE

Percussive sounds usually have a sustain level of “0”. Piano

and guitar sounds are in this category. Holding the keys for

a long time will have little effect on the duration of the

notes you are playing, even if you select a high value here.

Release (T)

This parameter adjusts the time over which the sound

will decay after the note is released until it is no

longer heard. The cutoff frequency will also fall

according to this setting.

NOTE

Some sounds already contain natural (sampled) vibrato

whose depth or speed cannot be changed.

Use the following three parameters if you think the

instrument in question has too much (or could use a

little more) vibrato.

Vibrato Rate (T)

This parameter adjusts the speed of the pitch modu-

lation. Positive (+) settings make the preset pitch

modulation faster, and negative (–) settings make it

slower.

Vibrato Depth (T)

This parameter adjusts the intensity of the pitch

modulation. Positive (+) settings mean that the

“wobble” becomes more prominent, while negative

(–) settings make it shallower.

Vibrato Delay (T)

This parameter adjusts the time required for the

vibrato effect to begin. Positive (+) settings increase

the time before vibrato will begin and negative set-

tings (–) shorten the time.

Mfx

The BK-5 contains 2 multi-effects processors (“Mfx”),

one reverb processor and one chorus processor that

can be used to process rhythms or Standard MIDI

Files.

Select “Off” for instruments that don’t need to be

processed by any Mfx.

NOTE

If you select “A” or “B”, additional parameters can be edited

(see below).

Parameter Setting

Cut Off -127~+127

Parameter Setting

Resonance -127~+127

Parameter Setting

Attack -127~+127

Parameter Setting

Decay -127~+127

Characteristics of a low-pass ﬁlter

Cutoff frequency

Frequency

Setting

Parameter Setting

Release -127~+127

Parameter Setting

Vibrato Rate -127~+127

Parameter Setting

Vibrato Depth -127~+127

Parameter Setting

Vibrato Delay -127~+127

Parameter Setting

Mfx Off, A, B

BK-5_US.book Page 77 Monday, November 14, 2011 12:43 PM