Adobe 65021048 User Guide - Page 200

ADOBE PREMIERE PRO CS3 194 User Guide 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