Managing Your Work Environment > Setting Preferences > Audio Preferences > 
Tone
 
 
 

The Tone area allows you to set a default for creating an audio tone clip.

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Audio Tone boxSets the default audio tone for Backdraft Conform. Select SMPTE (US), EBU (Europe), or Custom.

Reference Level fieldIf you select a custom audio tone, set the reference level (from -96 dBFS to 0 dBFS).