Yamaha PSR-SX600 Reference Manual page 65

Delete
You can delete the data of the specified channel in the Song. Select the channel whose data is to be deleted
by using the Cursor buttons [][][E][F], then enter checkmarks by pressing the [6 ]/[7 ] buttons.
(To remove checkmarks, use the [6 ]/[7 ] buttons.) Press the [ENTER] button to actually delete the
channel(s).
You can enter or remove the checkmarks for all channels by using the [1 ]/[2 ] (All Channels Delete) buttons.
Mix
This function lets you mix the data of two channels and place the results in a different channel. It also lets
you copy the data from one channel to another.
[2 ]/
Source1
[3 ]
[4 ]/
Source2
[5 ]
[6 ]/
Destination
[7 ]
Channel Transpose
This allows you to transpose the recorded data of individual channels up or down by a maximum of two
octaves in semitone increments. Select the desired channel to be transposed by using the Cursor buttons
[][][E][F], then set the value by using the data dial or the [+/YES]/[-/NO] buttons. Press the
[ENTER] button to actually transpose the channel(s).
You can select all channels by pressing the [1 ]/[2 ] (All Channels) buttons, letting you transpose all channels at the same time.
Make sure not to transpose channels 9 and 10. In general, Drum Kits are assigned to these channels. If you transpose the channels of Drum Kits, the
instruments assigned to each key will be changed.
Determines the MIDI channel (1–16) to be mixed. All MIDI events of the channel
specified here are copied to the destination channel.
Determines the MIDI channel (1–16) to be mixed. Only note events of the channel
specified here are copied to the destination channel. Besides the values 1–16,
there is a "COPY" setting that allows you to copy the data from Source 1 to the
destination channel.
Determines the channel into which the mix or copy results will be placed.
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