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Monday, September 16, 2013

Proper Audio Syncing

I know I haven't posted for a long long time, but I've got a 1001 things on my hand, so please bear with me.
Anyways, I'm gonna talk about how you would typically get better audio for a low budget and how you would retrieve that audio and make it sound good.

I would imagine that you dont have access to a camera with a microphone(line in) input jack. If you dont then you have other ways of getting audio by means of using other devices as well. These would include, but not limited to :

 1)Any smartphone
 2) Old audio recorder(the ones used for meetings,etc)
 3) USB player stick(usually have mic inputs, could be bought for cheap)
 4) Any Music player with mic capability.

For Every device and its way of retrieving its recorded audio files to the computer. If its a smartphone then you could easily retrieve it directly through its accompanied software or if you have a micro SD card in the phone itself you could record into it and then retrieve them easily by a usb adapter or whatev.
Music players and small mp3 players from china do come with mic inputs and everything recorded should land on the memory card itself or on the built in memory of the device itself.

What you would usually do when filming something, is to start recording audio shortly before filming your shot or your scene; you better leave it recording the entire scene if space is not an issue and your scene is short. Place it or mount it near your camera, you could do a small rig from some PVC pipes attached to your camera with a nail bolted towards from the tripod mount hole of the cam and having the pipes extending sideways.

So, once you've got your recordings it's time to EQ(Equalize) them, you could use free or paid software, but both would get you good results.
There are are Parametric EQ's that have several bands that are situated in different places(frequencies), and there are 3 band simple EQ's that mainly control the Highs, Mids , and Lows. You should probably lower the mids along with some of the lows(bass).
What you want to accomplish here is to remove the "muddiness" from your recordings and if there is some noise too you could remove them by using a de-noiser from any audio software package of your liking(eg: FL studio).

Then render out the EQ'd audio and import them into after effects or premier or any video editor of your liking. Sync the audio by exposing the waveforms and matching them up. You could use both microphones of the camera and recorder if u want stereo sound but you would have to EQ both of them and make sure that the quality matches up well.