Boss Audio Systems BR-900CD User Manual

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Copying Difficult Songs (Phrase Trainer)
Your BR-900CD features a built-in “Phrase Trainer.” The 
Phrase Trainer records from the device connected to the 
input jacks (e.g., CD players or MD player) and then allows 
you to play back a part of that recording repeatedly to allow 
you to practice that portion again and again. You can also 
slow down the playback to aid in copying fast phrases or 
remove the guitar solo sound to play along with only the 
backing instruments as a practice aid.
The Phrase Trainer can also be used with tracks 5 and 6.
* You cannot perform recording while you are using the Phrase 
Trainer (Time Stretch or Center Cancel). 
* The following buttons are disabled while the Phrase Trainer is 
in use.
[PAN/EQ], [LOOP EFFECTS], [RHYTHM PAD]
* The Rhythm does not sound when Phrase Trainer is on.
1. Record the song you want to copy onto tracks 5 and 6.
2. Repeat the portion of the song that you want to copy.
This will help you practice and copy a difficult phrase or 
guitar solo as you can select any portion of the song and 
have it repeated. 
For how to repeat a portion of the song, refer to 
“Repeating Playback (Repeat)” (p. 51).
3. When using the Time Stretch and Center Cancel 
Function, press [PHRASE TRAINER] to make the 
indicator light.
Each time you press [PHRASE TRAINER], the Phrase 
Trainer is on (the [PHRASE TRAINER] indicator lights) 
and off (the indicator is off).
* When you turn off both the Time Stretch Function and the 
Center Cancel Function, it doesn’t light.
Slowing Down the Speed 
(Time Stretch)
The Time Stretch function allows you to slow down the 
speed of playback to a half of the normal speed without 
changing the pitch.
1. Press [PHRASE TRAINER].
2. Press CURSOR [
] [
] to select “TimeStrtch,” and 
turn the TIME/VALUE dial to set “ON.”
fig.05-310d
ON: 
Slows down playback to one-half without 
changing the pitch.
OFF: 
Pitch and playback speed are not changed.
Canceling the Center Sound 
(Center Cancel)
The Center Cancel function allows you to remove the central 
sound of the playback (e.g., vocals or guitar solos). 
This is helpful if you want to practice playing along with the 
backing instruments.
* Depending on how the song was recorded, it may not be 
possible to completely remove the central sound.
* Sounds are played back in mono.
1. Press [PHRASE TRAINER].
2. Press CURSOR [
] [
] to select “CentrCncel,” and 
turn the TIME/VALUE dial to set it to “ON.”
fig.05-302d
ON:
  Removes central sound (e.g., vocals or guitar solos).
OFF:
  Normal playback.
Perform the procedure below if the central sound is not 
removed as you desire or if you want to emphasize the 
bass sound.
* When CentrCncel is set to “OFF,” subsequent operations are disabled.