The Singing Machine iSM1020BT Instruction Manual page 18

Operation
Using a Bluetooth Device
11
Press the Auto Voice Control (AVC)
button to turn this option On (AVC
ON will appear in the screen) and the
vocals on a multiplex recording are
muted as soon as the singer begins
singing into the microphone. When
the singer stops singing, the vocals
are automatically unmuted.
IMPORTANT: This feature only works
with multiplex media.
12
Press the BALANCE button, and then
adjust the balance level using the Skip

Forward /Skip Back
On multiplex recordings, use the Skip

Back button to reduce or eliminate
the lead singer's voice and use the
Skip Forward
eliminate the music.
IMPORTANT: This feature only works
with multiplex media.
13
SKIP: Advance or go back one track
by pressing the Skip Back

Forward
17

buttons.

button to reduce or

/Skip
buttons.