Apple Final Cut Pro 6 User Manual download pdf (Page 199)

198 Part III Setting Up Your Editing System

Now, both audio signals are in phase, but the noise is inverted, causing the noise to be

canceled. At the same time, the original signal gets a little stronger because it is sent

on two wires and combined. This helps compensate for the reduction in signal strength

that occurs naturally on a long cable run.

Any noise introduced into the cable across its long run is almost completely eliminated

by this process.

Note: Unbalanced cables have no way of eliminating noise and are therefore not as

robust for long-distance cable runs, microphone signals, and other professional uses.

Connecting Professional Audio Devices

The steps for connecting audio playback and recording devices are similar to the steps

for connecting professional video devices. Many professional audio-only devices such

as DAT recorders and Tascam DA-88/DA-98 multitracks support remote device control

and audio insert editing.

If you plan to capture footage using separate video and audio interfaces, you may need

to set up additional synchronization between your audio device and audio interface.

For more information, see “Synchronizing Equipment with a Blackburst Generator” on

page 200.

Connecting Professional Digital Audio Devices

Professional digital audio devices often use balanced XLR connectors. Each XLR

connector carries two AES/EBU digital audio channels. Connect the digital audio

outputs of your video or audio device to your audio interface (or its breakout box). If

your video interface has the appropriate connectors, you can also connect the audio

outputs of your device to the audio inputs on the video interface.

Note: Professional analog audio devices also use XLR connectors, but the signal is

incompatible with AES/EBU digital audio.

Combined signals

(noise eliminated)

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Apple Final Cut Pro 6 User Manual Page 199