QUICK GUIDE      35
Ikoner i venstre side af displayet angiver filtype eller mappe:
3.   Brug [UP] eller [DOWN] knapperne for at vælge den fil som du ønsker at afspille.
4.   Tryk [ENTER] for at vælge den ønskede fil.
Hvis den ønskede fil er placeret i en folder (Mappe), vælges først folder ved at trykke 
[ENTER] og efterfølgende vælges den ønskede fil i mappen.
Afspil en Song fra en USB-hukommelse 
1.   Vælg en Song (SMF- eller audio-fil) på USB-hukommelsen som forklaret i forrige 
afsnit.
2.   Afspil sang ved at trykke [START/STOP].
3.   Hvis det er nødvendigt, så kan Tempo på sang ændres ved brug af [TEMPO]  
knapperne.
Hvis du afviger meget fra det normale tempo på en mp3/Audio fil, så vil filen lyde 
underligt. (Den maksimale tempo ændring er +/-25%)
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.
Activating the ‘Play All Songs’ parameter for the USB memory
29
The [*/, ] button’s indicator lights and song playback starts.
3.  If necessary, you can change the song’s playback tempo: 
•  Press the TEMPO [] or [] button to decrease or increase the 
tempo.
NOTE
If you set a tempo value close to the upper or lower limit for an 
mp3 or WAV le, playback may sound a little strange.
•  Press the [TAP TEMPO] button at least three times at the desired 
tempo. (This function is not available if you selected an audio le 
(WAV or mp3).)
TheBK-3 calculates the intervals between your presses and sets the 
corresponding tempo value.
MEMO
Simultaneously press the TEMPO [] and [] buttons 
(“STANDARD”) to return to the rhythm’s preset tempo.
4.  Press the [START/STOP]/[*/, ] button again to pause song 
playback.
The [START/STOP]/[ */, ] button goes dark.
5.  Press [START/STOP]/[*/, ] button yet again to resume 
playback.
6.  Press the [SYNC START] /[ + ] button to stop playback
The Playback stops and the playback position return to the 
beginning of the song.
You can use the following buttons to control song playback (see the 
gray legends):
Button Explanation
Starts or pauses song playback.
Stops song playback and allows you to return to the 
beginning of the current song.
Rewinds the song.
Fast-forwards the song.
Activating the ‘Play All Songs’ 
parameter for the USB memory
Activating the ‘Play All Songs’ function
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.
2.  Use the [UP] or [DOWN] button to select the folder that 
contains the songs you want to listen to.
3.  Press the [ENTER] button to open the folder.
4.  Use the [UP] or [DOWN] button to select the song where 
you want playback to start.
5.  Press [ENTER] to conrm your selection.
6.  Press the [USB MEMORY] button to activate the playback 
function of the selected and all subsequent songs.
The following message appears:
NOTE
STL les contained in the selected folder will be ignored when 
you start playback (see below).
7.  Press the [START/STOP]/[*/, ] button to start playback of 
all songs.
NOTE
While playback of all songs is running, you can navigate the 
USB memory (to check its contents, for example). The “Play All 
Songs” function continues to play back the les of the folder you 
selected in step (2) above.
If you select a dierent le while navigating (by pressing 
[ENTER]), the “Play All Songs” function is switched o.
Activating the ‘Play All Songs’ parameter for the USB memory
29
The [*/, ] button’s indicator lights and song playback starts.
3.  If necessary, you can change the song’s playback tempo: 
•  Press the TEMPO [] or [] button to decrease or increase the 
tempo.
NOTE
If you set a tempo value close to the upper or lower limit for an 
mp3 or WAV le, playback may sound a little strange.
•  Press the [TAP TEMPO] button at least three times at the desired 
tempo. (This function is not available if you selected an audio le 
(WAV or mp3).)
TheBK-3 calculates the intervals between your presses and sets the 
corresponding tempo value.
MEMO
Simultaneously press the TEMPO [] and [] buttons 
(“STANDARD”) to return to the rhythm’s preset tempo.
4.  Press the [START/STOP]/[*/, ] button again to pause song 
playback.
The [START/STOP]/[ */, ] button goes dark.
5.  Press [START/STOP]/[*/, ] button yet again to resume 
playback.
6.  Press the [SYNC START] /[ + ] button to stop playback
The Playback stops and the playback position return to the 
beginning of the song.
You can use the following buttons to control song playback (see the 
gray legends):
Button Explanation
Starts or pauses song playback.
Stops song playback and allows you to return to the 
beginning of the current song.
Rewinds the song.
Fast-forwards the song.
Activating the ‘Play All Songs’ 
parameter for the USB memory
Activating the ‘Play All Songs’ function
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.
2.  Use the [UP] or [DOWN] button to select the folder that 
contains the songs you want to listen to.
3.  Press the [ENTER] button to open the folder.
4.  Use the [UP] or [DOWN] button to select the song where 
you want playback to start.
5.  Press [ENTER] to conrm your selection.
6.  Press the [USB MEMORY] button to activate the playback 
function of the selected and all subsequent songs.
The following message appears:
NOTE
STL les contained in the selected folder will be ignored when 
you start playback (see below).
7.  Press the [START/STOP]/[*/, ] button to start playback of 
all songs.
NOTE
While playback of all songs is running, you can navigate the 
USB memory (to check its contents, for example). The “Play All 
Songs” function continues to play back the les of the folder you 
selected in step (2) above.
If you select a dierent le while navigating (by pressing 
[ENTER]), the “Play All Songs” function is switched o.