Apple Logic Pro 9 - Manual (Page 767)

Signal clipping occurs when too loud a signal is fed through the output channel strip,
thereby exceeding the limit of what can be accurately reproduced, resulting in distorted
sound. When a signal clips, the value shown in the peak level display is highlighted in
red.
Peak level display
showing signal clipping
Note: It is not a problem if individual channel strips show evidence of clipping, as long
as the output channel strip (which is the summed level of all channel strips in the signal
flow) does not indicate clipping.
To eliminate clipping, you need to bring down the Volume fader by the same value that
is shown in red in the peak level display. For more information, see
Using a Channel Strip’s
Volume Fader .
To reset all clip indicators
µ
Click any clip indicator (or use the “Clear Overload Flag in Audio Channel Display” key
command).
Using a Channel Strip’s Volume Fader
You use the Volume fader to set a channel strip’s volume level.
Volume fader
To set the volume level of a channel strip
µ
Drag the channel strip’s Volume fader up or down.
The maximum boost is +6 dB. You can reset the Volume fader to 0 dB (90) by
Option-clicking it.
Note: If the “Independent Monitoring Level for Record Enabled Channel Strips” checkbox
is selected (in the Core Audio pane of the Devices pane of Audio preferences), an
independent monitoring level is available when an audio channel is record-enabled. For
more information, see
Setting the Monitoring Level for Recording .
767 Chapter 27 Mixing