Korg PA50, PA50sd PAGE 7

112 Program operating mode

Page 7 - Filter

ting of 0, the pitch EG times will be just as speciﬁed by the

“Attack/Decay/Release Time” settings.

The alternate modulation value at the moment that the EG

reaches each point will determine the actual value of the EG

time that comes next.

For example, the decay time will be determined by the alter-

nate modulation value at the moment that the attack level is

reached.

When this parameter is set to values of 16, 33, 49, 66, 82, or

99, the speciﬁed EG times will speed up as much as 2, 4, 8, 16,

32, or 64 times respectively (or slowed down to 1/2, 1/4, 1/8,

1/16, 1/32, or 1/64 of the original time).

For example if “AMS” is set to Velocity, increasing the abso-

lute value of “Intensity” will allow strongly-played notes to

increase the changes in pitch EG “Time” values. The direc-

tion of the change is speciﬁed by “Attack Time Swing” and

“Decay Time Swing”. As you play more softly, the pitch EG

times will more closely approach the actual settings of the

pitch EG.

-99…+99 Parameter value.

Attack Time Swing

This parameter speciﬁes the direction in which “AMS” will

affect the “Attack Time” parameter. With positive (+) values

of “Intensity”, a setting of + will cause the time to be length-

ened, and a setting of – will cause the time to be shortened.

With a setting of 0 there will be no change.

Decay Time Swing

Specify the direction in which “AMS” will affect the “Decay

Time”. With positive (+) values of “Intensity”, a setting of +

will cause the time to be lengthened, and a setting of – will

cause the time to be shortened. With a setting of 0 there will

be no change.

PAGE 7 - FILTER

Here you can make settings for the ﬁlters that will be used by

the oscillators. You can select either a 24 dB/octave low pass

ﬁlter with resonance, or a series connection of a 12 dB/octave

low pass ﬁlter and a 12 dB/octave high pass ﬁlter.

Selected

Use this parameter to select an oscillator to put in edit. Alter-

natively, you can select oscillators using the F1-F4 buttons.

Filter Type

This parameter selects the type of ﬁlter (Low Pass Resonant,

Low Pass & High Pass) for the selected oscillator. When the

Low Pass & High Pass ﬁlter type is selected, the ﬁlter B will be

activated.

Trim

Use this parameter to adjust the level at which the audio sig-

nal output from the selected oscillator is input to ﬁlter A.

Note: If this value is raised, the sound may distort if Resonance

is set to a high value or when you play a chord.

00…99 Trim level.

Frequency A (Cutoff Frequency A)

This parameter speciﬁes the cutoff frequency of ﬁlter A.

00…99 Cutoff frequency value.

Resonance A

The resonance emphasizes the overtone components that lie

in the region of the cutoff frequency speciﬁed by “Frequency”,

producing a more distinctive sound. Increasing this value will

produce a stronger effect.

00…99 Resonance value.

Selected: Osc1

Type: LPF Resonant

Trim: 99

Frequency A: 7

Filter |Osc1



Low Pass Resonance: 24 dB/octave low

pass filter with resonance

Low Pass & High Pass: 12 dB/octave

low pass filter and 12 dB/octave high pass

filter in series

Frequency

Level

Low Pass

12dB/oct

24dB/oct

This is a filter that cuts the high-

frequency region above the cutoff

frequency.

This is the most common type of filter,

and is used to cut part of the overtone

components, making an originally bright

timbre sound more mellow (darker).

When the “Filter Type” is Low Pass

Resonance, the cutoff will have a

steeper slope.