User Guide

Using Help | Contents | Index Back 79
Adobe Premiere Pro Help Capturing and Importing Source Clips
Using Help | Contents | Index Back 79
Capturing analog audio
If you want to use audio that is not yet in digital form, such as an analog cassette or a live
voiceover, you need to capture it. With the proper audio- or video-capture card, Adobe
Premiere Pro can capture audio that is synchronized with its source video or that is
independent of it.
The quality of digitized audio and the size of the audio file depend on the sample rate (the
number of samples per second) and
bit depth (the number of bits per sample) of the
digitized audio. Also, digitizing stereo audio requires twice as much disk space as mono
audio. These parameters, controlled in the Capture Settings section of the Project Settings
dialog box, determine how precisely the analog audio signal is represented in digital form.
Higher sample rates and bit depths reproduce sound at higher levels of quality, but with
correspondingly larger file sizes. If you plan to export or play back the final cut from Adobe
Premiere Pro, capture audio at
the highest quality settings your computer can handle,
even if those settings are higher than the settings you’ll specify for final export or
playback. This provides
headroom, or extra data, that helps preserve quality if you adjust
audio gain or apply audio effects such as equalization or dynamic range compression/
expansion; see
“Applying and controlling Standard effects” on page 244.
Note: Although the DV format can record two independent stereo audio pairs, you cannot
capture the Stereo 2 pair in Windows.
To set the location of a file captured from an audio-only source:
1 Choose Edit > Preferences > Scratch Disks.
2 For Captured Audio, select a location and click OK.
To capture an audio source or voiceover:
1 Connect the audio source or microphone to the sound input port on your computer or
sound card. If necessary, choose Edit > Preferences > Audio Hardware to configure the
input device; see “Setting a track’s input source” on page 213.
2 If you are recording a voiceover and want to preview the timeline as you record,
position the current-time indicator in the Timeline window a few seconds before the time
when you want the voiceover to begin.