Roland VP-550 Owner's Manual page 17

If you're using a phone plug mic
1.
Connect it to the [EXT IN] jack as shown.
2.
Turn the [EXT IN] knob to "MIC."
✍
This knob adjusts the level of the sound from the [EXT IN] jack. (Turn the knob toward "MIC" to
increase the level, or toward "LINE" to decrease it.) If you've connected a mic, you should turn this
to "MIC. "
➞ Refer to "Adjusting the mic input level" (p. 22) for more about this adjustment.
3.
Set the [MIX TO MIC] switch "ON."
✍
The [MIX TO MIC] switch setting determines whether the sound from the [EXT IN] jack will be used
as a mic input (modulator; the ON setting) or as the carrier (the OFF setting).
We'll be using it as a mic input, so select the "ON" position here.
Carrier
This is the signal that is the
basis of the sound and deter-
mines its timbre and pitch.
If you press the [VOCODER
1] and [VOCODER 2] sound
buttons simultaneously, the
sound being received from
the rear panel EXT IN jack will
be used as the carrier.
If you want the sound from the rear panel
[EXT IN] jack to be the carrier, set the [MIX
TO MIC] switch "OFF" (
(EXT IN)
➞
p. 50).
Modulator
The tonal character (formants) of the
voice from the mic input is extracted,
and these formants are used to
modulate (transform) the carrier
signal.
If you want the sound from the
rear panel [EXT IN] jack to be the
modulator, set the [MIX TO MIC]
➞
switch "ON" ( p 52)
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