[Paul Godard]

Thank you John.

I will definitely buy an adapter box next time I shop at amazon.

Ideally I would like to find one that can power the mike (phantom) from the Nikon DSLR to avoid another batteries… but it does not seem to be a standard item… Any idea?

Paul Godard – Soul Photography

[Paul Godard]

The best way I have found so far to deal with this problem is to export the voice over track to Audacity, remove the background noise, copy one chanel to the other and level… then export as best quality and reimport into FCPx… not ideal workflow but it definitely gives the best results!

So what should I do in the future to avoid background noise and phase cancellation?

Paul Godard – Soul Photography

[Paul Godard]

“I’m not sure why you have a phase problem in the first place.”
Well according to the correlation meters…. I had a phase problem.

“Just change the audio from Stereo to Dual Mono and turn off the second mono channel”
I did try that but again the volume goes down a lot although the meter stay at the same level and weird still on both L & R, although mono2 is no ticked!

“When you render, FCP X will feed the mono signal into both stereo channels so the final render will be a copy of the mono signal in each stereo channel.”

I am trying that… and it kind of works IMHO… as when I re-imported the clip into FCPx, both channels are now filled up…. but the volume is still too low… so I have to use gain again.

“You’ll need to explain how you are recording to figure that one out. How was this recorded that it turned into a stereo file? One mic? Two mics? Stereo Mic?”

As I said before, I am using a shotgun Sennheiser microphone (mono I presume) connected to my Nikon D800 via a home made XLR to stereo jack (I will need to check which connection I used as I can not find it right now) … working fine except a very small background noise. What kind of cable or box would solve the problem?

Paul Godard – Soul Photography

[Paul Godard]

Thank you again John… really appreciate!

That is exactly what I have down and the phase issue is now solved.
The new problem is the sound level… and degradation. Why is the sound lower after applying phase left or right?

In the next example, I thought that the initial recording was good (part 1), but after gain with phase left, the volume of the voice is too low and the background noise too present (part 2), so I apply a gain of 6 and removed the background noise at 75% (part 3) but the sound quality is now degraded.

https://www.paulgodard.com/TestAudio3.mp4

What is your advise to fix that new problem?

And later… but that is not so urgent… how can I avoid the phase issue at the recording with my equipment? What kind of cable or box would solve the problem?

Paul Godard – Soul Photography

[Paul Godard]

If I understand correctly… the sounds was recorded on dual mono with one channel opposite (negative current) to the other. The meters on the camera were correct as the sound in my headset.

Now that I need to cancel one chanel, I get half of the volume (changing from stereo to dual mono in audio/channel config and then unpicking one channel.

So far I understand all this…

In the gain filter when I tick phase left (or right) I get the same volume drop. Why? I thought that the purpose of that filter was to copy the content of one chanel over the other one… so I should not get a reduction in volume?

Is there another way to easily copy one chanel to the other in FCPx?

Paul Godard – Soul Photography

[Paul Godard]

I have downloaded Voxengo but honestly I am a bit lost… what do I have to look for in the SPAN window?

I have uploaded a small mp4 that has the problem on cellphone, maybe it will help you to find a solution.

https://paulgodard.com/TestAudio.mp4

I am desperate… I need to find a solution before end of day!

Paul Godard – Soul Photography

[Paul Godard]

Thank you John… I will definitely truth phase detector plugin a bit later…

Meanwhile maybe you can listen to the video clip and tell me what you think.

https://www.ticket2utopia.com/Blog_8_Damaraland_Camp.html

What is very strange to me is that only the sound of the first interview is silent on my cellphone, but the ones after that are fine, although all recording was done the same morning with the same equipment.

That video shows another sound issue on my cellphone… very weird.

https://www.ticket2utopia.com/Blog_4_Grootberg_Lodge.html

And of course everything play perfectly well on my macbook pro.

Paul Godard – Soul Photography

[Paul Godard]

Thank you JM… I was happy to find that solution and also appreciated reading your explanation.
As I was on FCPx, I had to update your solution a bit but it worked… BUT

THE BACKGROUND…
I have recorded some interviews with a shotgun Sennheiser connected to my Nikon D800 via an home made XLR to stereo jack… working fine so far except a little background noise.
I realised that although the sound plays perfectly well on distant stereo speakers… it becomes bad or silent on smaller device like my cellphone Note 4… then I discover a problem of phase cancellation.
Following the very easy solution that FCPx offers, by ticking phase left or right only in the gain filter… the phase cancellation problem is solved.

THE NEW PROBLEM
The problem is that the sound is now by far too low to hear, although the meters seem unchanged. If I export the video, the sound is still too low.
In order to have the correct voice, I need to push up the gain by at least 8… but then the meters often go in the red.
Another issue is that for some voices, doing the phase left seem to reduce the sound quality.

What is the best way to go around that?

Paul Godard – Soul Photography

[Paul Godard]

Thank you for the suggestion but the PSD will not work in my case. My images are 4000 px wide and I have 2 sets of +/- 4000 images.

I am not an expert in AE, but as I understand the way “stabilise motion” works with 2 track points, here is my idea, considering the fact that the whole set of images (4000) is composed of several subsets (100-400) of identical images, where the variation (move, rotate & scale) only applies between each subsets.

The first step is to identify all the frames where the changes happen. Easy.
The second step would be to add keyframe for the track points on each of these frames. How do I do that instead of using the analyse arrows for AE to set the keyframes manually… I have no idea!
The last step would just be to apply the stabilise motion as normal.

Would that work? Can an AE expert tell me how to do step 2?

Paul Godard – Soul Photography

[Paul Godard]

Yep! This is exactly what I have done…
So why is it so complicate to align these images?
What should I do?

Paul Godard – Soul Photography