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happen with or without input monitoring, but since input monitoring can add
several levels of gain to the signal flow, it’s of greater concern when you have input
monitoring enabled. Input monitoring is disabled by default when you install
SONAR, and you enable it with the following procedure.
To Enable Input Monitoring
• Turn your speakers down, and on an audio track that you want to monitor,
click the Input Echo button so that it’s lit up (on) . To disable monitoring
for this track, click the button off.
Or
• Turn your speakers down, and on the Playback State toolbar (to display, use
the View-Toolbars-Playback State command), click the Input Monitor
button so that it’s lit up—this enables input monitoring on all tracks. To
disable monitoring for all tracks, click the button off.
Now you can hear your instrument in real time with any plug-in effects that you
want to patch into the current track. You might also hear an echo, because the dry
signal is coming out of your sound card slightly ahead of the processed signal. To
eliminate the dry signal, see the next procedure.
To Eliminate the Echo from Input Monitoring
1. Open the software mixer that controls your sound card. If your sound card
uses the Windows mixer, open the mixer by using the Start-Programs-
Accessories-Entertainment-Volume Control command, or double-clicking
the speaker icon on the Windows taskbar.
2. In the Play Control window of the mixer, check the Mute checkbox in the Line-
In column, or in the column of whatever jack your instrument is plugged into,
and close the mixer window.
Now you can hear only the processed sound when you use input monitoring. Using
WDM or ASIO drivers for your sound card keeps latency to a negligible amount.
Note: This procedure does not eliminate feedback from you system, only the echo.
If you experience feedback, you have a feedback loop somewhere in your mixer
setup.
The Audio Engine Button
SONAR has a button in the Transport toolbar called the Audio Engine button .
This button lets you turn SONAR’s audio engine off if you’re getting distortion or
feedback and want to cut the sound off. When playback or recording are in
progress, SONAR enables the button automatically—however, the button appears
greyed-out during playback or recording because you can’t control the button at
that time. Whenever the button is enabled, the Audio Running message lights up
on the Status bar that’s at the bottom of the SONAR window.
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