Multimoog Musical Instrument Manual de Serviço descarregar pdf (Página 72)

pitch

until

another

key

is

depressed.

Operational

when

GLIDE

switch

is

ON,

or

when

GLIDE

jack

on

rear

panel

is

used

properly.

23

VOLUME

A

final

gain

control

(attenuator)

which

is

independent

of

the

voltage

controlled

amplifier

associated

with

the

LOUDNESS

CONTOUR.

Calibration

is

arbitrary

from

"0"

to

a

maximum

of

"10."

STATUS

SLIDE

SWITCHES

The

STATUS

SWITCHES

(not

named

on

panel)

indicate

the

conditions

for

operation

of

many

sections

on

the

Multimoog,

or

provide interconnection

of

sections.

27

FILTER

MODE

SWITCH

Switches

to

control

tracking

by

filter

cutoff

frequency

of

keyboard

and

OCTAVE

selector.

Also

places

the

FILTER

into

the

oscillatory

(TONE)

mode.

NORM

(normal)

delivers

one-half

volt

to

the

control

input

of

the

filter

for

each

vo/(

change

(1

volt

per

octave)

on

the

keyboard

or

OCTAVE

selector.

(A

change

of

one

octave

in

pitch

causes

a

change

of

one-

half

octave

in

FILTER

cutoff

frequency.)

The

FULL

position

delivers

one

volt

per

each

octave

of

pitch

change.

(A

change

of

one

octave

in

pitch

causes

a

change

of

one

octave

in

FILTER

cutoff

frequency.)

The

TONE

position

also

delivers

one

volt

per

octave

to

the

filter

control

input,

and

places

the

FILTER

into

the

oscillatory

mode,

generating

a

sine

waveform.

The

FILTER

will

oscillate

in

the

TONE

mode

regardless

of

the

EMPHASIS

setting

in

the

FILTER

section.

rmrm

an

izn

an

24

RELEASE

SWITCH

Switches

to

achieve

immediate

release

of

sound

on

release

of

all

keys.

As

panel

graphics

indicate,

when

RELEASE

is

switched

to

the

right,

all

releases

will

be

abrupt.

When

switched

left,

the

RELEASE

controls

in

the

FILTER

CONTOUR

and

LOUDNESS

CONTOUR

sections

are

operable

over

their

entire

range,

and

the

release

of

any

sound

will

depend

on

their

settings.

25

OSCILLATORS

SWITCH

The

NORM

(normal)

position

places

the

oscillators

under

keyboard

control

and

into

the

sound

chain,

so

they

will

be

heard

and

will

follow

the

keyboard

in

pitch.

The

DRONE

position

removes

the

oscillators

from

keyboard

control;

the

oscillators

are

heard,

but

"drone"

(at

low

"F"),

and

do

not

follow

the

keyboard.

The

OFF

position

removes

the

oscillators

from

the

sound

chain,

so

they

are

not

heard;

however

the

oscillators

remain

under

keyboard

control.

26

FILTER

MOD

BY

OSC

B

SWITCH

FILTER

MODULATION

BY

OSCILLATOR

B

connects

the

output

of

the

OSCILLATOR

B

section

(including

DOUBLING)

to

the

control

input

of

the

FILTER

section.

This

creates

ring

mod

and

such

timbral

effects

without

changing

the

apparent

pitch

center.

The

OFF

position

provides

no

connection.

WEAK

and

STRONG

positions

represent

degree

of

modulation

index.

28

FILTER

SUSTAIN

SWITCH

Determines

whether

or

not

the

FILTER

CON

TOUR

voltage

level

will

be

sustained

at

a

maximum

when

a

key

is

held.

This

switch

determines

whether

the

contour

produced

by

the

FILTER

CONTOUR

will

have

two

or

three

parts.

In

the

non-sustain

mode

to

the

right,

the

FILTER

CONTOUR

will

generate

a

two-part

contour

/\^

which

can

last

no

longer

than

the

settings

of

its

ATTACK

and

RELEASE

timing

controls

allow,

regardless

of

how

long

a

key

is

depressed.

In

the

sustain

mode

to

the

left,

the

FILTER

CONTOUR

generates

a

three-part

contour

/mn

J^^

whose

middle

portion

will

be

sustained

as

long

as

a

key

is

depressed.

In

this

case,

the

RELEASE

part of

the

contour

becomes

operable

only

when

all

keys

are

released.

29

LOUDNESS

SUSTAIN

SWITCH

Determines

whether

or not

the

LOUDNESS

CONTOUR

voltage

level

will

be

sustained

at

a

maxi

mum

when

a

key

is

held.

This

switch

determines

whether

the

contour

produced

by

the

LOUDNESS

SUSTAIN

will

generate

a

two

or

three-part

contour.

In

the

non-sustain

mode

to

the

left

the

LOUDNESS

CONTOUR

will

generate

a

two-part

contour

that

can

last

no

longer

than

the

Settings

of

its

ATTACK

and

RELEASE

controls,

regardless

of

how

long

a

key

is

depressed.

In

the

sustain

mode

to

the

left,

the

LOUD

NESS

CONTOUR

generates

a

three-part

contour

/iB7

P\

whose

middle

portion

will

be

sustained

as

long

as

a

key

is

depressed.

In

this

case,

the

RELEASE

part

of

the

contour

becomes

operable

only

when

all

keys

are

released.

77

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