On OS 9, if the sound is really choppy, the most common reason is you are outputting to two different audio devices. To remedy this, use the change ports dialog to change all audio ports to the same device as specified in the digital audio setup dialog.
Other common problems can be remedied by setting buffer sizes properly. Buffer sizes can be changed in both the Digital Audio Setup advanced dialog and in the Buffers Pane of the preferences dialog.
Audio files are usually large and can easily cause playback and/or recording problems for many computers. Problems occur most frequently when you try to monitor already-recorded audio tracks while you record new ones. Your computer tries to both read and write large amounts of data at the same time. Two solutions you should try before any others are:
Possible Cause
| Remedy
|
Too many audio tracks
| Mix a monitor track and archive all other audio tracks
|
Too many clocks per quarter note
| Reduce clocks per quarter note setting (Setup > MIDI Setup) |
Too many tracks on a disk
| Export some audio tracks to a different disk, if possible (not just to a new
disk partition)
|
Buffer size too big or too small | Increase or decrease number in For Playback Allocate field (File > Preferences > Buffers) |
Too many audio regions in a track. Metro creates a new audio region when you
use an audio edit command or effect from the Edit menu.
| View audio regions by turning on Show Audio Regions in the Switches menu
(Metro dislays audio regions inside a red rectangle in the Graphic Editor). If a
track has numerous audio regions, select it and use the File > Export Audio Track
command, and check Replace source track with exported audio.
|
CD or DVD in drive | In some cases having a CD in the drive will slow down the entire OS. Eject the CD or DVD. |
Too much disk activity | In finder preferences, turn off all 'languages for searching for file contents'. |
Disk Problem
| Remedy
|
Disk is fragmented, increasing seek time
| Run a utility to defragment your diisk
|
Disk operation slowed down by unnecessary instructions
| In the Finder, choose View > View Options > and uncheck Calculate folder sizes
|
Disk operation slowed down by unnecessary instructions
| When you format a disk for recording, you may have the option to choose the
Extended setting that supports small file sizes. Don’t choose this option—choose the Standard setting.
|