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28
12. Using the BK-3 as a USB player
This section explains how to playback MIDI (SMF) and audio songs stored
on an optional USB memory. Note that it is also possible to select rhythms
on that device and to use them in the same way as the internal rhythms.
New song and rhythm les can be copied to the USB memory using your
computer as you purchase them.
Getting Ready to Use the BK-3 as a
USB Player
1. On your computer, copy the new song and rhythm les to
an optional USB memory (memory stick).
NOTE
Use USB memory sold by Roland (M-UF-series). We cannot
guarantee operation if any other USB memory is used.
2. Connect the USB memory to your BK-3.
NOTE
Carefully insert the optional USB memory all
the way into the port until it is rmly in place.
NOTE
Never remove a USB memory while this unit is turned on. Doing
so may corrupt the unit’s data or the data on the USB memory.
NOTE
The BK-3 supports USB memories with a capacity of up to
2 TB.
File types the BK-3 can read and play back
Extension Format
Rhythms .stl
Standard MIDI Files
(SMF)
.mid 0 or 1
.kar
Audio les
.mp3
• MPEG-1 Audio Layer 3
• Sampling frequency: 44.1kHz
• Bit rate: 32/40/48/56/64/80/96/112/
128/160/192/224/256/320 kbps,
VBR (variable bit rate)
.wav
• 16-bit linear
• Sampling frequency: 44.1 kHz
• Stereo/mono
Selecting a Song or Rhythm on a USB
Memory
1. Connect an optional USB memory to the BK-3 or, if it was
already inserted, press the [USB MEMORY] button
After a few seconds, the display shows the contents of the USB
memory.
The icons to the left of the le names indicate the le type:
Icon Explanation
Rhythm le
SMF le
Audio mp3 le
Audio WAV le
Folder
2. Use the [UP] or [DOWN] button to select the le you want
to play back or display.
3. Press the [ENTER] button to load the le.
The [USB MEMORY] button now lights to indicate that you selected
a le on the USB memory.
If the le you need is located inside a folder, you must rst select
that folder, press the [ENTER] button to see its contents and then
select the le. If you opened a folder by mistake, press the [EXIT]
button to return to a higher level.
MEMO
Press and hold the [EXIT] button to return to the main page.
Playing Back a Song or Rhythm from
a USB Memory
If you selected a rhythm, see “Playing Back Rhythms” (p. 24), because
operation is the same as for internal rhythms.
In the following, we will therefore only show you how to play back song
les located on a USB memory.
NOTE
The BK-3 has no internal memory where you could store SMF or
audio les.
1. Select a song (SMF or audio le) on the USB memory.
See “Selecting a Song or Rhythm on a USB Memory” (p. 28).
2. Press the [START/STOP] /[*/,] button to start playback.
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