Roland MV-8800 Appendices page 7

■ Problems with the sequencer
Problem
Can't play back
Can't change the tempo
during playback
Can't record on a MIDI
track
Can't record on an audio
track
MIDI data that should
exist is not displayed
The sounds switch
unexpectedly
After playback, you no
longer hear the sound
Notes are delayed or
interrupted
●
Could the [PLAY] indicator be blinking?
➔
In the SYNC screen (Screen Guide; p. 81), check the Sync Mode setting.
●
Could the tempo track be turned on?
➔
In the SONG PARAMETER screen (Screen Guide; p. 79), turn the Tempo Track "Off."
●
Is there free space in sequence memory?
➔
Check the Sequence Memory status.
☞ SONG screen (Screen Guide; p. 8), PATTERN screen (Screen Guide; p. 91)
➔
Use the DATA THIN popup (Screen Guide; p. 42) to thin out unneeded performance data.
●
Could the Multi-Timbre Sampler Mode be on?
➔
If Multi-Timbre Sampler Mode is on, you won't be able to record a performance in the
sequencer. Go to the MIDI screen (Screen Guide; p. 177) and turn the Multi Timbre Sampler
Mode setting Off.
●
Is there free space in wave memory?
➔
Check the Remain status.
☞ SONG screen (Screen Guide; p. 8), PATTERN screen (Screen Guide; p. 91)
➔
If there are unused samples, delete them.
☞ SAMPLE MANAGER screen (Screen Guide; p. 169)
●
Is the recording mode appropriate?
➔
In the RECORDING PARAMETER (AUDIO) popup (Screen Guide; p. 19), check the Rec
Mode setting.
●
Are the view filter settings appropriate?
●
In the EVENT LIST screen or PIANO ROLL EDIT screen, have you selected the track that you
want to view?
➔
Specify the current track as the track whose MIDI data you want to view.
●
Could unwanted program changes have been entered?
➔
In the EVENT LIST screen (Screen Guide; p. 23), delete the unwanted program changes.
●
Could control change messages have lowered the volume?
●
Could you be using the mute control track?
➔
In the TRACK PARAMETER popup (Screen Guide; p. 11–16), check the Mute Control setting
of each track.
➔
Check the Mute Control Track settings of each song or pattern.
☞ SONG PARAMETER screen (Screen Guide; p. 79)
PATTERN PARAMETER popup (Screen Guide; p. 99)
●
Could the number of simultaneous notes have exceeded 64?
➔
Try reducing the number of simultaneously played notes.
Depending on the structure of a partial, some partials may use eight samples (four stereo
samples). If you use such a partial, eight notes of polyphony are actually being used for each
note you play.
Also, sounds that have an extended release may still be using processing power even after
the release has become inaudible to the ear, and this will mean that the performance data can
differ from the actual number of notes being played.
●
Could you be using sounds that use a significant amount of LFO?
➔
Try using other sounds. LFO processing places a significant load on the processor, so
making extensive use of LFO will increase the overall processing load on the MV-8800, and
may also affect the timing accuracy of the notes themselves.
●
Could data be concentrated at the beginning of beats in the sequence data?
➔
Offset the data by one or two ticks so that the data does not occur at the identical timing.
If you step-recorded your song data, or if you realtime-recorded it from a keyboard and then
quantized it, the data will tend to be concentrated at the beginning of beats. This will cause a
large amount of data to be sent to the MV-8800 at once, and may cause processing of notes
to be delayed.
Cause
Troubleshooting
A-7
MV-8800 Appendices