37
Using the FR-4x USB Audio Player
This section explains how to playback audio songs stored on an
optional USB flash drive. New song and rhythm files can be copied
to the USB flash drive using your computer.
Getting Ready to Use the FR-4x as a USB Audio Player
1. On your computer, copy the audio songs to an
optional USB flash drive.
NOTE
5 Use a commercially available USB flash drive or a USB flash
drive sold by Roland. However, we cannot guarantee that all
commercially available USB flash drives will work with this
unit.
5 Never turn off the power or remove the USB flash drives or
the power cord while the USB flash drive’s access indicator is
blinking.
2. Connect the USB flash drive to your FR-4x.
File types the FR-4x can read and play back
File format
File
Extension
Format
Audio files
mp3
5 MPEG-1 Audio Layer 3
5 Sampling frequency: 44.1 kHz
5 Bit rate: 32/40/48/56/64/80/96/11
2/128/160/192/224/256/320 kbps,
VBR (variable bit rate)
wav
5 16-bit linear
5 Sampling frequency: 44.1 kHz
5 Stereo
Caution when Playing Back Audio Files
Playing back an mp3 file of an audio file places a significant
processing burden on the FR-4x, and in some cases may cause it
to be unable to completely process all of the performance data
from the keyboard.
In such cases, using a WAV file instead of mp3 data might relieve
the problem.
Selecting a Song on a USB Flash Drive
1. Connect an optional USB flash drive to the FR-4x.
2. Press the [SONG LIST] button.
The display shows the contents of the USB flash drive. If the lower
line of the display indicates “FILE,” the upper line indicates the file
name of the song.
If the lower line of the display indicates “FLDR,” the upper line
indicates the name of the folder.
3. Use the [–] [+] buttons to select the song that you
want to play.
MEMO
If the file that you want to select is inside a folder, select
the folder and press the [ENTER/YES] button to open the
contents of the folder.
If you opened a folder by mistake, press the [EXIT/NO] button
to return to a higher level.
Press and hold the [EXIT/NO] button to return to the main
page.
Playing Back a Song from a USB Flash Drive
1. Select a song on the USB flash drive.
&
“Selecting a Song on a USB Flash Drive” (p. 37)
2. Press the [
r
] button to start playback.
The [
r
] button’s indicator lights and song playback starts.
During song playback, the lower line of the song screen shows the
playback position (the time from the beginning).
NOTE
5 If the playback of audio file seems too loud or too soft, you
may want to change the audio level. See the parameter “A.
FileLv” (p. 74).
5 If you change songs during playback, the playback stops.
MEMO
5 Press the [
r
] button once again to pause song playback.
Its indicator goes dark.
5 If the song playback position is later than 1 second, pressing
the [–] button in the Song screen returns the playback
position to the beginning of the song.
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