wrong forum but anyhow...
2 choices: sample and play effect or phrase trainer
yoinked from the manual:
1. sample and play:
Sample and play
This allows approximately 8 seconds of recording. By using the reverse setting, you can produce special scratch effects.
1. Press the expression pedal all the way forward to enter record-ready mode. The pedal LED will blink. In Individual mode, press program switch 2 to enter
record-ready mode.
2. Play a phrase etc. on your guitar. Recording will begin automatically at the moment you start playing and the pedal LED will begin blinking faster.
3. When the recording time specified by TIME has elapsed, recording will end and the pedal LED will not be lit. Also, you can stop recording before the specified recording time has elapsed by pressing the pedal all the way forward (i.e., pressing the pedal switch). To re-do the recording, repeat the procedure from step 1. During recording, you can also return the pedal and then
press it again to stop recording and begin playback.
4. Operate the expression pedal. When you advance the pedal, the recorded phrase will playback. If you have set REVERSE to A-1...A-4 or b-1...b-4, returning the pedal will cause the sound to playback in reverse at the
specified speed. If you set REVERSE to OFF, the sound will only
playback forward. With a setting of LP1 or LP2, advancing the pedal
forward will playback the sound as a repeating loop. When you return the pedal back and then advance the pedal again, playback will begin from the beginning.
Recording will not begin unless you play your guitar louder than the threshold.
The recording sound will be erased when you enter Phrase Trainer mode or when you turn off the power.
Knob 1 TIME Specifies the sample time (recording time).
Knob 2 REVERSE OFF: When you press the pedal, the sound will playback to the end and then stop.
LP1: Press the pedal forward to playback
as a loop, and return the pedal
backward to stop.
LP2: Press the pedal forward to playback
as a loop, and return the pedal
backward to playback to the end and
then stop.
A-1...A-4: Press the pedal forward to playback,
and return the pedal backward
to playback in reverse.
b-1...b-4: Press the pedal forward to playback
from the beginning, and return the
pedal backward to playback in
reverse from the end.
Knob 3
Knob 4
Knob 5 MIX Adjusts the output level of the sampled
sound.
2. phrase trainer:
Phrase Trainer mode
You can record a phrase from an audio device (ie., CD or DAT) connected to the AUX IN jack or from a guitar connected to the INPUT jack, and loop it (i.e., play it back repeatedly). Then you can practice a phrase on your guitar while listening to the repeating phrase. Since you can slow down the playback speed without affecting the pitch, this is a convenient way to learn or practice phrases from recordings that are difficult to play. In Phrase Trainer mode, the effect expression pedal will automatically control the volume of the guitar. When you enter this mode, the MODULATION, PEDAL, and AMBIENCE effect blocks will automatically be turned off. (When you exit Phrase Trainer mode, the previous
settings will be restored.) In this mode it is not possible to use Bypass or Mute, or to switch programs or effect channels.
1. Enter Phrase Trainer mode
From Play mode, simultaneously press and hold program switches 1 and 2 for one second. The MASTER/VALUE display will indicate the selected recording mode, and the Phrase Trainer icon will blink.
2. Select the recording mode
Use the cursor switches ( , ) to select the input jack, and use the MASTER/VALUE switches (, ) to select the recording time.
Input jack AUX AUX IN jack GTR INPUT jack Recording time SHT maximum 8 seconds (high quality) LNG maximum 16 seconds (extended time)
The phrase will be recorded and played back monaurally.
3. Begin recording
Start the audio device that is connected to the AX1500G, and press the bank switch (REC) at the point where you wish to begin recording. The name display will indicate REC and the number of seconds of recording. Once you record a phrase, it is not possible to change the recording mode. If you wish to change the recording mode, you must return to Play mode, and once again enter Phrase Trainer mode.
4. Stop recording
At the point where you wish to stop recording, press program switch 1 ( ) or the bank switch (REC). Recording will end, and the name display will indicate
PLAY. The recorded phrase will automatically begin playing repeatedly as a loop. Recording will also end automatically if you continue recording for the
maximum time length of the selected recording mode. Depending on the volume of the connected audio device, the sound may be distorted. If this occurs, adjust the volume on the audio device. If the "AUX" input jack is used, the sound from the INPUT jack will be muted until recording ends. To re-do the recording Press program switch 1 ( ) to stop playback. Then
continue with step 3. Begin recording and step 4. Stop recording. To erase the recorded phrase The phrase will be erased when you press the EXIT
switch to return to Play mode. You can also record a new phrase to overwrite the previously-recorded phrase.
5. Stop
When you press program switch 1 ( ), playback will stop. Press program switch 1 ( ) once again, and playback will resume from where you stopped.
If effect channel switch ( ) is pressed while
stopped, you will return to the beginning of the
recorded phrase.
By pressing the cursor switches, you can playback
in reverse ( ) or forward ( ) as long as you hold
down the switch.
6. Playback
During recording or while stopped, press program switch 1 ( ) to playback the recorded phrase as a repeating loop. By pressing program switch 2 (SPEED) or the MASTER/ VALUE switches (, ), you can slow down the playback speed without affecting the pitch.
Each time you press program switch 2 (SPEED), the
playback speed will cycle through settings of 100%,
75%, 50%, 25%...
By pressing the MASTER/VALUE switches (, ),
the speed can be adjusted in 5% steps; 100%, 95%,
90%, ... 25%.
During playback, you can press cursor switch ( ) to playback at double speed as long as you continue pressing the switch.
If you press cursor switch ( ), the recording will play back in reverse as long as you continue pressing the switch.
If you press effect channel switch ( ), the recording will rewind as long as you continue pressing the switch.
7. Hold
By pressing program switch 3 (HOLD), you can hold the sound that was playing at the moment the switch was pressed. When you press the switch once again, hold will be turned off. By pressing a cursor switch while the sound is being held, you can playback backward ( ) or forward ( ) as long as you continue holding the switch.
If you press effect channel switch ( ), you will go back one second, cancel Hold, and begin playback.
Exiting Phrase Trainer mode
To return to Play mode, you can either press program switches 1 and 2 simultaneously, or press the EXIT switch.
When you exit Phrase Trainer mode or turn off the
power, the recorded phrase will be erased.
