Video-enabled DSLR cameras have become the Tickle Me Elmo's of the creative production world, but one thing Elmo isn't laughing at is the audio quality of the built-in microphones. Whether your camera has a microphone input or not, you should consider using an external digital audio recorder to handle the sound recording for your next video production. Using an external audio recorder in video production and filmmaking is often referred to as "double system." This practice requires a bit more work on your part; but if the ultimate goal is to create an excellent finished product, then capturing good sound should be a top priority.
We've all experienced audio that's out of sync. When audio doesn't match up with video, it feels like we're watching a poorly dubbed movie. When your studio hardware isn't synced to a good clock, it creates an odd echoey scenario that can be so subtle you may not realize your overall sound is being degraded. So what can be done in order to keep audio in perfect sync? In a word, a word clock. A word clock is a nifty bit of technology that has the sole purpose of keeping perfect time and preventing data errors with digital audio.
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