User Manual

Preparing for Audio Output
1053
Considerations for Crossconversion and Downconversion
You should be aware of the following when crossconverting or downconverting HD formats:
• You can select an HD crossconvert format for output or an SD downconvert format for
output, but you cannot output both at the same time.
• Avid recommends using crossconverted sequences for preview or reference only. When
using digital cut to output the HD master sequence to tape, use the native frame rate of the
sequence. Crossconvert and downconvert options that change the edit rate are not supported
for digital cut. For example, if you have a 1080p/23.976 sequence, you can preview the
sequence at 1080i/59.94, 720p/59.94, or NTSC 30i. But when creating the digital cut, use
the native format of 1080p/23.976.
• Avid recommends using downconverted 720p/59.94 and 1080p/23.976 sequences for
preview or reference only. When using digital cut to output the HD master sequence to tape,
use the native frame rate of the sequence. Crossconvert and downconvert options that change
the edit rate are not supported for digital cut.
Preparing for Audio Output
You can use the Audio tool to generate and customize a calibration tone and to monitor global
output levels. Use the Audio Project settings to adjust the global output levels and specify other
output settings. The following procedures provide information about preparing for audio output.
For information on audio mix procedures such as adjusting volume and pan for selected tracks or
audio mixdown, see “Working with Audio” on page 759.
Setting the Calibration Tone
The Audio tool provides an internal calibration tone you can customize and play as a reference
signal on a digital cut. You can use the recorded reference signal for calibrating the digital cut
audio at another site.
The default tone playback is –20 dB (digital scale) or –14 dB (software-only systems) with a
1000-Hz signal. In some cases, you might need to customize the signal. For example, a common
reference signal convention for audio work involves recording 30-second segments of 1-kHz,
10-kHz, and 100-Hz tone back-to-back.
For information on creating tone media, see “Creating Tone Media” on page 205.
To change the parameters for the calibration tone:
1. Select Tools > Audio Tool.
The Audio tool opens.