Yamaha SPX90 SPX90 Owners Manual Image - Page 18

REVERB

and

GATE

This

program

feeds

the

reverb

signal

through

a

gate

circuit,

making

it

possible

to

output

only

a

segment

of

a

longer

reverb

sound.

Parameters

provided

for

the

reverb

portion

of

the

signal

are

REV

TIME,

HIGH,

DELAY,

HPF

and

LPF,

while

parameters

for

the

gate

portion

are

HOLD

TIME,

RELEASE

TIME,

and

MIDI

TRIGGER.

(dB)

DIRECT

SIGNAL

DELAY

HOLD

TIME

RELEASE

TIME

(TIME)

REVERBERATION

TIME

1.

REVERB

TIME

(R/T).

Range:

0.3

—

99.0

sec

2.

HIGH

(High

Frequency

Reverb

Time

Ratio).

Range:

0.1

-

1.0

3.

DELAY.

Range:

0.1

-'

50.0

msec

4.

HPF

(High

Pass

Filter).

Range:

32

Hz

—

1.0

kHz,

THRU

5.

LPF

(Low

Pass

Filter).

Range:

1.0

kHz

-

11

kHz

All

these

parameters

have

the

same

function

as

those

of

the

REV

programs.

See

page

10

for

details.

6.

TRIGGER

LEVEL.

Range:

0

-

100%

Determines

the

strength

(amplitude)

of

the

input

signal

required

to

trigger

opening

of

the

gate.

At

100%,

only

extremely

high-level

input

signals

will

trigger

the

gate,

while

at

0%

even

this

slightest

input

signal

will

trigger

the

gate.

7.

HOLD

TIME.

Range:

1

-

30,000

msec

This

parameter

sets

the

amount

of

time

the

gate

is

"open,"

allowing

the

reverb

sound

to

come

through.

8.

RELEASE

TIME.

Range:

5

-

32,000

msec

This

parameter

determines

the

time

it

takes

for

the

gate

to

close

completely

after

the

HOLD

TIME.

9.,

MIDI

TRIGGER.

Range:

ON,

OFF

When

ON,

a

KEY

ON

signal

from

an

external

MIDI

keyboard

can

be

used

to

trigger

the

R

&

G

effect.

GATE

ADR-NOISE

GATE

This

program

uses

a

gate

circuit

to

pass

or

shut

off

the

input

signal

in

a

number

of

ways.

It

can

be

used

to

pass

just

a

short

segment

of

a

longer

input

signal,or

it

can

be

used

to

pass

only

signals

that

exceed

a

specific

level

(noise

-gate

type

operation).

It

is

also

possible

to

achieve

reverse

gate

effects

in

which

the

gain

in-

creases

gradually

after

the

gate

is

triggered.

In

addition

to

signal

-level

triggering,

it

is

also

possible

to

trigger

the

gate

via

a

footswitch

connected

to

the

front

-panel

MEMORY

TRIGGER

jack

when

the

FOOT

TRIGGER

key

LED

is

ON.

DECAY

LEVEL

LEVEL

=

100%

ATTACK

TIME.

TRIGGER

HOLD

TIME

DECAY

TIME

RELEASE

TIME

(TIME)

1.

TRIGGER

LEVEL.

Range:

1

-

100%

Determines

the

strength

(amplitude)

of

the

input

signal

required

to

trigger

opening

of

the

gate.

At

100%,

only

extremely

high

level

input

signals

will

trigger

the

gate,

while

at

0%

even

the

slightest

input

signal

will

trigger

the

gate.

2.

TRIGGER

DELAY.

Range:

—100

-

-100

msec

Produces

a

delay

between

the

time

at

which

the

gate

is

triggered

and

that

at

which

it

actually

opens.

If

a

minus

value

is

programmed,

the

input

signal

itself

is

delayed

so

that,

effectively,

the

gate

opens

before

the

signal

appears.

3.

TRIGGER

MASK.

Range:

5

—

32,000

msec

This

parameter

makes

it

impossible

to

re

-trigger

the

gate

function

until

the

programmed

time

has

elapsed.

4.

ATTACK

TIME.

Range:

5

msec

-

32,000

msec

Determines

how

long

it

takes

for

the

gate

to

open

fully

from

the

time

it

begins

to

open.

5.

DECAY

TIME.

Range:

5

msec

—

32,000

msec

Determines

the

length

of

time

it

takes

for

the

gate

to

fall

to

DECAY

LEVEL

after

it

is

fully

open.

17

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