Yamaha PSR-S770 Reference Manual page 14

Balance/Song,Audio
Balance/Song,AUX
Balance/MIDI,AudioAUX
1
Filter/Voice,Style
Reverb/Voice,Style
Chorus/Voice,Style
Master Tempo
<No Assign>
14
PSR-S970/S770 Reference Manual
Adjusts the volume balance between the Song and Audio playback.
Rotating the knob to the left increases the Song volume, while rotating it
to the right increases the Audio (USB Audio Player) volume.
Adjusts the volume balance between the Song playback and sound input
from the [AUX IN] jack. Rotating the knob to the left increases the Song
playback volume, while rotating it to the right increases the input volume
from the [AUX IN] jack.
Adjusts the volume balance between the playback of MIDI data (Song,
Style, Multi Pad) and Audio (USB Audio Player and input from the
[AUX IN] jack). Rotating the knob to the left increases the MIDI volume,
while rotating it to the right increases the Audio volume.
Adjusts the cutoff frequency of the filter and the resonance for all key-
board parts and the Style to change the timbre or tone of the sound.
Adjusts the Reverb depth for all keyboard parts and the Style. Rotating
the knob to the right makes it deeper.
Adjusts the Chorus depth for all keyboard parts and the Style. Rotating
the knob to the right makes it deeper.
Changes the tempo of the currently selected Style or Song. Rotating the
knob to the left makes it slower, while rotating it to the right makes it
faster. Setting range is from 50% of the default tempo value to 150%.
No function is assigned.