User Manual

Preparing to Capture Audio
205
Adjusting Audio Input Levels
You can use the Audio tool and the Audio Project Settings dialog box to check the audio input
levels. If the input levels are too high or too low, you need to adjust the output level of your
source signal, if possible.
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On software-only systems, you can adjust audio input through a slider in the Input tab of the
Audio Project settings. For more information, see “Audio Project Settings: Input Tab” on
page 1356.
Before you capture, make sure the audio I/O device is properly calibrated. See “Calibrating
Audio Hardware for Avid Nitris DX and Avid Mojo DX” on page 208.
To check and adjust input levels using an audio input device:
1. Click the In/Out toggle buttons in the Audio tool for the channels that you use for input.
The Audio tool displays an I for Input.
2. Play back the source audio (from a videotape or DAT, for example). If the recording includes
reference tone, cue to the tone and play it back.
3. Adjust the output on the playback device so that the device’s volume meter shows the
appropriate level for the reference signal in the Audio tool (0 VU for videotape playback, for
example).
You can adjust the output by using a deck that supports output gain or by sending the signal
through a mixing console.
Creating Tone Media
You can create your own tone media as a master clip for editing directly into sequences.
To create tone media:
1. Open a bin.
2. Select Tools > Audio tool.
3. Click the PH (Peak Hold) menu in the Audio tool, and select Create Tone Media.
The Create Tone Media dialog box opens.
4. Set the appropriate calibration tone parameters for the project. You can also use the default
output tone of –20 dB (digital scale) with a 1000-Hz signal.
A value of 0 generates random noise. A value of –777 generates a tone sweep.
5. Select the number of tracks of tone you want to create (up to 8 tracks).
6. Click the menus, and select a target bin for the tone master clip and a target drive for the tone
media file.