And leave the shotgun in it's case. They are only effective if there is no unwanted background sound or reflections in the field of pickup.

If LF rumble is part of the problem, apply a Low Cut EQ at 100Hz.
You may want to try the trial version of Izotope, but nothing will "get rid" of what is already there. And it's not a cheap tool, either.

The H1, as rraud mentioned, was actually designed with DSLRs such as yours in mind. And it's only $99.
However, I would use it on-subject, not on-camera whenever possible.

Hi
actually I had a separate deck, a Tascam DR100 but I'd forgotten to reformat the card and it ran out of space! Duh. I missed about two minutes of the performance before I caught my blunder and slippd in a fresh card. I even slated, well, if clapping in front of the camera qualifies...crude but it works.

I'll disagree that running a shotgun or whatever direct to the 7d is a bad idea, for exactly the above reason. I have SOMETHING, ain't pretty, but way better than what that built in mic would've captured.

I tried audition, not so impressed with that software. Oh well, thanks for the help, I'll try and figure out how to put some lipstick on that soundpig.

My point is that a "whatever" running into your DSLR would be better than a shotgun, in most cases that I can imagine. Even placement on a controlled soundstage can be critical.

I hired a shooter for a smallish ($30,000) stage production in 2004, and she ran line-level vocal and instrument feeds into her DVCAM's xlr inputs, which unfortunately were set for mic level input. We were through the opener and first feature number before she caught it and attenuated the inputs. It was a rock show, and the captured audio looked like Bart Simpson's haircut.

Clear in the back of the room (30 ft. to the proscenium), we had a stereo pair (90 deg X-Y) cobbled into a cheap MP3 recorder as a rear 5.1 source, and with some careful EQ and manual noise cancellation, were able to save the show, to the point where the transition from mp3 to board audio was not even apparent in the DVD. Given the layout, ambient and early reflections would be much worse if we had used shotguns in their place.

That brings up another thought: If the freeway noise is always significantly below the level of your program, you might get a little relief using the echo/noise reduction technique I posted several years ago. Since it employs compressed negative feedback, use it lightly!

http://www.sonycreativesoftware.com/forums/ShowMessage.asp?ForumID=3&MessageID=545526

I've heard of this technique for reducing reverb? is it the same?

Anyway, here's you tutorial:
1. Select All, then Copy the audio.
2. Paste to a new track, invert the waveform, and apply moderate compression.
3. Reduce the new track volume so that a preselected "quiet" area is about 50% of the level of its corresponding area in the original.
4. Paste Mix the new track into the old. Renormalize if necessary.

There should be a noticeable improvement in clarity and echo reduction because you have applied negative feedback to the areas where the echo is most objectionable. Too high a compression or too high level of the feedback track will give a "pumping" effect, however.

QUESTION: I found invert in my Soundforge Studio in the Process menu, but how to apply compression? can' t see it in the menu.

Thanks
B

In Pro there is Graphic Dynamics and Wave Hammer compressors, maybe a couple of others. I don't know what is in Audio Studio. I use Wave Hammer.

If you could upload an original audio clip, maybe 30 sec. somewhere and let us have a look, we could tell you if anything can be done or not. From your description, I wouldn't want you to go to a lot of trouble for negligible results, as rraud correctly pointed out in his first response.

Due to the constantly changing amplitude, (thanks to the AGC) even the manual phase reversal NR method would be futile IMO. But you may post a sample for a more accurate opinions.

I couldn't put it on this site so I loaded it to one of my sites.
here's the sound from an me66 direct to Canon 7d and it's wonderful AGC. This was supposed to be the guide track...am in damage control mode right now It should play as soon as you open the page.
http://sorrentofilms.com/sample.html

Well, from that example you don't need any Compressors, Wave Hammers or Jack Hammers! - it is over-compressed and distorted already; at best you may be able to alter volume envelope so the preamble and clapping is quieter than the music (that's called mixing....). Also before that, you MAY be able to reduce noise with SoundForge Noisereduction, though likely the Piano will sound worse.

It's amazing what a bad job Canon did with it's onboard audio. That sample was recorded with a decent mic even. Perhaps someone there in Product Development has a sense of humor or owns Tascam stock shares.

Ghost Tree,
Put the original footage (only) on the timeline, and render it as a WAV file with no adjustment or filters, and put it up on MediaFire.

I "may" be able to do something, and if so I will send you my settings. Don't hope for a cure, but maybe a little improvement.

Ghost Tree,
Put the original footage (only) on the timeline, and render it as a WAV file with no adjustment or filters, and put it up on MediaFire.

I "may" be able to do something, and if so I will send you my settings. Don't hope for a cure, but maybe a little improvement.

Thanks! I'll post here as soon as I do it.

Here's the file:
http://www.mediafire.com/download.php?t3umoe77u92952h

Okay, hope this works.

You uploaded a clip of a music program. Sorry, there is nothing I can do for the terrible AGC. Dipping down the pauses manually would be very time consuming.

I thought I might be able to quiet some of the LF rumble in the voice track of the PSA video you linked to, and I still think I could if you will upload that audio.

As far as the general audio quality of the 5D / 7D, it seems all the stories I've heard are true.