Yamaha A4000 Owner's Manual page 220

About the COMMANDS
Knob 4
[ Turn] length
Turn the knob to set the length for the fade, in "address"
units. The minimum length is 0 (no fade). The maximum
length is equal to the entire playback length of the wave-
form (the length from the start address to the end
address).
Note again that fade-in always begins from the start
address, while fade-out always ends at the end address.
[Range] 0 — Wave length
Knob 5
[ Turn] length %
Specifies the length of the fade in or fade out as a per-
centage of the wave length. This parameter works in con-
junction with the length (Knob 4) parameter.
[Range] 0% — 100%
[ Press] EXEC&CONT
Press this knob to call the fade confirmation display.
Press Knob 5 (YES) to actually execute the fade opera-
tion.
w
Cursor (when the Process Type is LoopXfade)
Cursor
w
Knob 1 Knob 2
Turn Crossfade
Cursor
action Area
Press
EXEC —
action
Knob 1
Same function as Cursor
Knob 2
[ Turn] Crossfade Area
Selects the area over which crossfade is applied, and
determines the segments that are used to generate the
crossfade.
[Range] sustain, release
• sustain ... Generates the crossfade by merging the
end part of the loop with the area just preced-
ing the loop start. This method produces
smoother sustained looping, and the cross-
fade recurs with each iteration.
• release ... Generates the crossfade by merging the
initial part of the loop with the initial segment
following the loop area. This method produces
a smoother loop release, and the crossfade
occurs only once (as the loop is exited). This
method is useful only with the "
type.
220
Chapter 9 COMMAND
Knob 3 Knob 4 Knob 5
Curve — Width
— — EXEC&CONT
q
(page 218).
O
• A5000/A4000
Processing if Crossfade Area = sustain:
Start Address
A
Step 1: Copy waveform piece from end of segment A — B into a buffer. Extract piece of equal length from the end of
C — D, and copy into another buffer. The length of these pieces is determined by the Width setting.
Step 2: Apply fade-in processing to the A — B piece, and fade-out processing to the C — D piece.
Step 3: Combine the two resulting waveforms, and write the result into the extraction area at the end of C — D.
Processing if Crossfade Area = release:
Start Address
A
Step 1: Copy waveform piece from start of segment C — D into a buffer. Extract equal piece from the start of E — F,
and copy into another buffer. The lengths of these pieces is determined by the Width setting.
Step 2: Apply fade-in processing to the C — D piece, and fade-out processing to the E — F piece.
Step 3: Combine the two resulting waveforms, and write the result into the extraction area at the start of E — F.
Knob 3
[ Turn] Curve
This setting selects the curve type for the loop cross fade.
Three types are available, as illustrated below.
[Range] -exponent, linear, +exponent
Fade-In Curves
-exponent
Level
Fade-Out Curves
-exponent
Level
Knob 5
[ Turn] Width
Sets the length of the crossfade area, as a percentage of
the total loop length.
[Range] 0% — 90%
[ Press] EXEC&CONT
Press this knob to call the loop cross fade confirmation
display. Press Knob 5 (YES) to actually execute the loop
cross fade operation.
" loop
Loop Start Address Loop End Address
B C D E
Width (where C — D = 100%)
Loop Start Address Loop End Address
B C D E
Width (where C — D = 100%)
linear
Level
Time Time
linear
Level
Time Time
End Address
F
End Address
F
+exponent
Level
Time
+exponent
Level
Time