Multimoog Musical Instrument Manual de Serviço descarregar pdf (Página 19)

Synthesizers

designed

specifically

for

stage

use

—like

the

Multimoog—let

you

"patch"

together

sec

tions

(modules)

of

the

instrument

using

switches

and

pots

(potentiometers)

instead

of

patchcords.

But

for

purposes

of

learning

basic

principles

let's

continue

to

think

of

all

synthesizers

as

having

physically

separate

modules

requiring

patchcord

connection.

(The

modular

patchcord

synthesizer

still

offers

maximum

flexibility

in

connection

choice.)

Since

sound

has

the

properties of

pitch,

timbre,

and

loudness,

it

follows

that

the

synthesizer

would

have

rrfodules

dealing

with

each

property.

SYNTHESIZER

SOUND

MODULES

TIMBRE

LOUDNESS

The

synthesizer

is

electric;

it

deals

with

elec

trical

signals—sound

is

generated

by

the

speaker.

To

make

sound,

at

least

one

of

the

modules

must

generate

an

electrical

signal

that

can

drive

the

speak

er

to

make

sound—an

audio

signal.

Not

surprisingly,

we

call

this

module

an

audio

signal

generator.

Since

this

audio

signal

eventually

becomes

a

sound,

an

audio

signal

generator

is

sometimes

called

a

"sound

source."

A

sound

source

generates

the

"raw"

tone

or

noise

that

can

be

shaped

into

musical

sound.

You

can

take

the

mouthpiece

off

a

trumpet

and

"buzz"

tunes

with

it.

That

would

be

a

very

"raw"

sound

source!

Further

parallels

between

synthesizer

modules

and

acoustic

instruments

can

be

made.

The

timbre

module

acts

somewhat

like

a

mute

on

a

trumpet;

neither

acts

(normally)

as

a

sound

source,

but

each

is

a

sound

modifier.

The

loudness

module

is

another

modifier,

like

the

bell

of

the

trumpet.

Neither

acts

as

the

sound

source;

each

modifies

by

amplifying

sound.

The

pitch

module

of

the

synthesizer

is

a

sound

source,

analogous

to

the

lips,

mouthpiece

and

air

column

that

make

the

trumpet

sound.

If

we

connect

a

sound

source

on

the

synthesizer

to

a

monitor

system

(amp

and

speaker),

we

have

the

medical

minimum

for

producing

sound

with

the

synthesizer:

a

sound

whose

audio

signal

is

translated

by

a

speaker.

MINIMUM

AUDIO

"PATCH"

SOUND

SOURCE

MONITOR

AMP

&

SPEAKER

The

sound

produced

by

this

minimal

"patch"

the

timbre

and

loudness

modifiers

between

the

sound

won't

be

very

interesting,

since

the

properties

of

source

and

the

monitor,

sound

will

be

static,

or

remain

the

same.

Let's insert

SOUND

SOURCE

SOUND

MODIFIER

MONITOR

SOUND

MODIFIER

AMP

SPEAKER

24

1 2 ... 14 15 16 17 18 19 20 21 22 23 24 ... 76 77

Comentários a estes Manuais

Sem comentários