Yamaha SY55 Product Manual Download

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VOICE EDIT MODE

Summary: Determines whether the cutoff frequency

of the selected filter will be controlled by the
LFO or by the filter envelope generator (EG).

Settings: EG, LFO, EGVA

Mode

Procedure: Use the

and

select the Mode parameter. Use the [DATA EN-
TRY] control or [+1/YES] and [-1/NO] keys to
select the "EG" or "LFO" setting.

Filter 1 or Filter 2 can be selected by holding

the [SELECT] key and pressing the numeric [9]
or [6] key, respectively.

Details: Varying the filter cutoff frequency can

ceate "sweep" or "wah-wah" type effects. If the
cutoff is controlled via the LFO a cyclic vari-

ation based on the "shape" of the selected LFO

cursor keys to

waveform is produced. If EG control is selected,
the filter envelope generator (a separate EG is
provided for each filter — see "FILTER: CUT-

OFF ENVELOPE GENERATOR" below) can be
set up to produce a wide range of time-based

variations.

Please note that if "LFO" is selected, the

filter cutoff envelope generator parameters have

no effect on the sound and will not appear on the

display: Cutoff EG levels and rates, rate scaling,
and level scaling. The filter can only be con-
trolled from controllers (modulation wheel, etc.)
if the LFO mode is selected.

If the "EGVA" setting is selected, the R1

and L1 envelope parameters arc controlled by

note velocity (i.e. the harder a key is played the
higher the Rl speed and L1 level). All EG para-
meters are controlled by note velocity when
"EG" is selected.

Refer to: Tutorial, page 37, 45. "FILTER: CUTOFF

ENVELOPE GENERATOR," below.

FILTER: CUTOFF ENVELOPE GENERATOR

JOB 23

Summary: All parameters within this function de-

termine the "shape" of the cutoff envelope gen-
erator for the selected filler. This function is
only available if the "Mode" parameter (page

63) is set to "EG" or "EGVA."

Settings:

L0, L1, L2, L3, L4, RL1 and RL2 parameters:

-64 ... +63

R1, R2, R3, R4, RR1 and RR2 parameters:

0 ... 63

meters can be accessed by moving the cursor in

Procedure: Use the

and

cursor keys to

select the various rate and level parameters in
turn (L0, R1, L1, R2, L2, R3, L3, R4, L4, RR1,

RL1, RR and RL2), using the [DATA ENTRY]

control, [-1/NO] and [+1/YES] keys, or numeric
and [ENTER] keys to set the value of each.

The arrow symbols (

and

) that appear at

either end of the display mean that more para-

the indicated direction using the

and

keys.

The filter 1 or filter 2 envelope generator

can be selected by holding the [SELECT] key
and pressing the numeric [9] or [6] key, respec-
tively.

Details: The cutoff envelope generator level para-

meters correspond to cutoff frequency. Plus "+"
values produce higher cutoff frequencies while

minus "-" values produce lower cutoff frequen-
cies. "0" level values produce the normal cutoff
frequency as determeined by the cutoff parame-
ter (See "Cutoff" on page 74).

The "Rate" parameters work in the same way

as the amplitude, and pilch envelope generator
rate parameters: a selling of "0" produces the
slowest rate between levels, while the maximum
setting of "63" produces the fastest (almost in-
stantaneous) change.

The pilch envelope begins at L0 (Level 0),

moves to L1 (Level 1) at a rate determined by
the selling of R1, then to L2 (Level 2) at R2