Yamaha CP60M Technical Information download pdf (Page 16)

REV7

T

HE

REV7

Professional

Digital

Rever-

berator is a programmable, MIDI-controll-

able signal-processing device with stereo

out-

put.

It

offers

a

wide

variety

of

reverb,

echo,

delay,

and

ambient effects.

The

30

preset programs in

the

REV7

can

be

divided

into

the

following

basic

types:

REV

(reverb),

E/R

(Early

Reflection),

DELAY,

ECHO,

and

MOD

(Modulation Type, includ-

ing Phase, Chorus,

and

Flange effects). Each

of

these presets can

be

edited by

the

user,

and

the

resultant new effect can

be

stored

in

one

of

the

60

user-programmable memory locations. This

gives a

total

of90

different

programs

stored

in

the REV7's internal memory.

All user programs

must

be created by start-

ing

from

one

of

the

30

presets.

Each

type

of

preset program has its

own

specific set

of

pro-

grammable parameters.

As with instruments like the DX7, "parame-

ters"

in

the

REV7

are

the

separate,

individual

elements

that

make

up

each

effect.

There

are

two

types

of

parameters

in

the

REV7-

"invis-

ible"

parameters

(non-programmable,

fixed-

value parameters)

and

programmable parame-

ters (ones that

you

can modify). Because

of

this,

you

may find

that

you

can

set

all

of

the

pro-

grammable parameters

of

two

different presets

to

the same value,

and

the resulting effects will

still

not

be

the

same,

due

to

differences

in

the

non-programmable parameters.

Each preset type

has

up

to

7 programmable

parameters.

As you might expect, these pro-

grammable

parameters

differ

from

one

preset

type

to

another.

Here

are

the

7

programmable

parameters for the

REV

Type presets:

1ST

RE'cF.+---t-+--------~---'----tTIMEI

DELAY

1) Reverberation Time

2)

Initial Delay

3)

1st Reflection Delay

4)

1st Reflection Level

5)

Hi

Reverb Time

6)

Low Reverb Time

7) Diffusion

16

AFTERTOUCH!Vol. 1

No.3

User

Pro-

grammability

And

MIDI

Control

Of

TheREV7

Digital

Reverb.

By

Tom

Darter.

Basic

parameters

far

"early

reflection"

effects.

Basic

parameters

far

rewr-

beration

effects.

And

here

are

the

7

programmable

parameters

for

E/R

Type presets:

1) Initial Delay

2)

1st Reflection Delay

3)

1st Reflection Level

4)

Liveness

5)

Room

Size

6)

Diffusion

7)

Mode

DIRECT

SIGNAL

EARLY

REFLECTIONS

(TIME)

DELAY

1ST

REF.!:

.I

.I

INITIAL

DELAY

r

nntr~

---1---4---ROOM

SIZE

(TIME)

By

the

way,

the

"Mode"

parameter

in

the

E/R

Type

of

preset

is a

special

case,

one

that

allows

you

to

choose between 6 different opera-

tional

modes:

1)

Small

Hall;

2)

Large Hall;

3)

Random;

4)

Reverse;

5)

Plate;

and

6)

Spring.

The

name

of

each

mode

indicates

a

typical

environment

or

effect,

but

only the early reflec-

tions

typical

of

that

environment

or

effect are

created

in

this

type

of

preset.

Each

one

of

the

REV7's

30

presets

is

designed

to

create

a

specific

kind

of

effect;

in

most

cases, a

number

of

"invisible" (non-pro-

grammable)

parameters

are

involved

in

the

creation

of

these

specific

effects. By

keeping

many

of

these values fixed, the effect will always

retain its basic character, while the 7 program-

mable

parameters

will allow

you

to

adjust

the

effect

to

suit

your

needs

without

altering

the

fundamental

character

of

the

effect. You

could

think

of

each

one

of

the

presets as being a dedi-

cated, stand-alone signal processor with

up

to

7

front

panel controls.

The

REV7 gives

you

30

of

these, each with its

own

set

of

controls.

To

understand this

more

clearly, let's look at

preset #1,

"Large Hall," which is a

REV

Type

of

effect.

For

each

one

of

the

7

programmable

parameters,

here

are

the

settings

that

create

"Large

Hall,"

followed

by

the

overall range

of

1 2 ... 11 12 13 14 15 16 17 18 19 20

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