This is just a followup on the audio noise issues you can run into with the 7D.
The issue the 7D runs into is it auto gain. It injects a lot of noise whenever the is no sound to record, because it ratches up the gain. With some preamps you can inject an ultrasonic tone which in effect shuts off the auto gain and cleans things up. Some people record the sound independent of the camera and, using a clapper, merge it into the final vid.
I found what I think is an easier solution, at least for me.
My tutorial videos are built using camtasia (camtasia.com) and it includes some simple, automatic noise reduction. I just drop the video .mov clip into Camtasia and it combines it with all the other clips I add and produces the .wmv file that I need.
Anyhow the point is that even the simple noise reduction in Camtasia pretty much completely eliminates the noise introduced by the auto gain in the 7D. So my guess is that almost any kind of audio post processing that includes some kind of noise reduction will clean up the auto gain noise. Here is a short example, made using the Tascam mic plugged into the 7D and produced using Camtasia.
BTW the inexpensive Tascam mic is great for my purpose.
Comments
This is just a followup on the audio noise issues you can run into with the 7D.
The issue the 7D runs into is it auto gain. It injects a lot of noise whenever the is no sound to record, because it ratches up the gain. With some preamps you can inject an ultrasonic tone which in effect shuts off the auto gain and cleans things up. Some people record the sound independent of the camera and, using a clapper, merge it into the final vid.
I found what I think is an easier solution, at least for me.
My tutorial videos are built using camtasia (camtasia.com) and it includes some simple, automatic noise reduction. I just drop the video .mov clip into Camtasia and it combines it with all the other clips I add and produces the .wmv file that I need.
Anyhow the point is that even the simple noise reduction in Camtasia pretty much completely eliminates the noise introduced by the auto gain in the 7D. So my guess is that almost any kind of audio post processing that includes some kind of noise reduction will clean up the auto gain noise. Here is a short example, made using the Tascam mic plugged into the 7D and produced using Camtasia.
BTW the inexpensive Tascam mic is great for my purpose.
http://photoes.smugmug.com/Other/Stuff/9223982_pUNj6#974537377_3ado6
http://www.danalphotos.com
http://www.pluralsight.com
http://twitter.com/d114
http://www.danalphotos.com
http://www.pluralsight.com
http://twitter.com/d114