beautypg.com

Recording audio, About recording audio, Capturing analog audio – Adobe Premiere Pro CS3 User Manual

Page 200

background image

ADOBE PREMIERE PRO CS3

User Guide

194

3

(Optional) Specify the In and Out points for a track.

Specifying the In and Out points for a specific track applies the same amount of trimming to the In and Out points
of the other linked tracks. The In and Out points of linked tracks with different durations will be different. The In
and Out points of linked clips are the same only if they have identical durations.

See also

Linking multiple audio clips

” on page 192

Recording audio

About recording audio

You can record to an audio track in a new sequence or record to a new audio track in an existing sequence. The
recording is saved as an audio clip that’s added to your project.

Before recording audio, make sure that your computer has sound inputs. Adobe Premiere Pro supports ASIO
(Audio Stream Input Output) devices. Many ASIO devices have connectors for connecting speaker, microphone
cables, and breakout boxes.

If your computer has an ASIO device for connecting sound input devices, make sure that the sound device settings
and input volume level options are properly set. Refer to your operating system’s Help for details.

In Adobe Premiere Pro, set the default device options in the Audio Hardware Preferences for specifying the input
channel used when recording.

Once you connect input devices and make all preliminary settings, you can use the Audio Mixer in Adobe Premiere
Pro to record audio. Use controls in the Audio Mixer to adjust the monitoring levels. An audio clip is created from
the recording and is added to both the Timeline and Project panels.

See also

Record an analog source

” on page 196

Capturing analog audio

If you want to use audio that isn’t yet in digital form (for example, from an analog cassette or a live microphone),
you need to digitize it through an audio or audio/video digitizer/capture card.

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, 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. 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 when you
adjust audio gain or apply audio effects such as equalization or dynamic range compression/expansion. Although
the DV format can record two independent stereo audio pairs, Adobe Premiere Pro can capture only one stereo pair.
It may be possible to select either stereo pair

1, stereo pair

2, or a mix of both, depending on the DV hardware you

use. For details, see the documentation for the DV hardware.

April 1, 2008