Welcome!

This community is for professionals and enthusiasts of our products and services. Share and discuss the best content and new marketing ideas, build your professional profile and become a better marketer together.

2

2
Jesper Rey
On 6/5/19, 7:59 PM

I had this issue a some weeks ago. The boom operator on that shoot had done some tests regarding this issue on another shoot he was on. He had this theory that the amplitude sine waves coming from the UDM-1 are controlled by the "Sensitivity" setting. The higher the sensitivity the greater the amplitude (obviously). The ultrasonic waves are normally always picked up by microphones used on set but aren't really hearable to the human ear. But when the amplitude is so high, the peaks of the sine wave are chopped off by the limit of the bandwidth, resulting in something close to a square wave. This can result in digital artefacts, and that's supposed to be the pulsating sound the sound mixer picks up. 

Anyway, just a theory of his ofcourse, but interesting nonetheless. 

Lowering the sensitivity on the UDM-1 on that shoot actually did the trick for me. 


Your Reply


1
Avatar

Fabio

--Fabio--
100773
| 4 4 6
Madrid , Spain
--Fabio--

Started out as a focus puller 8 years ago, I shot movies and commercials in Italy, Spain, Turkey, Uk, Bulgaria, Morocco and USA. Love everything camera related, gear porn and sharp lenses. Sharpness is not debatable.

Fabio
On 6/5/19, 1:27 PM

Had the same issue today using the cineRT. Camera was very close to the talents (4 1/2 feet), who were wearing a wireless mic and there was also a shotgun mic involved in the equation. Luckily it wasn’t a very difficult shot so I just unplugged the rangefinder. And the sound mixer told me that it was kind of a minor problem, that in theory could also be fixed in post.


Your Reply

1
bart van otterdijk
On 6/9/19, 12:22 PM

I only had this issue once or twice with the CineRT. Much more often with the cinetape.

Luckily the CineRT has a solution for that. the 'Sonic Saver' mode in the Vitals page. page 48 of the manual.

Icon is a happy sound engineer wearing headphones. Click it and it turns green. It reduces the 'volume' and timing I believe of the ranger output. You can't use the bugs anymore.

I never used the function yet since just lowering the sensitivity to 30 was enough.


Your Reply


1
Bastien Rébéna
On 6/4/19, 6:55 AM

Hi, 

i already had similar issues. 

Some sound Guy explain me that it could come from hf transmitter who don’t have enought high Cut filter so the beat of UDM is hear by the sound engineer. No solution except an other transmitter. 


Your Reply


0
Avatar

Fabio

--Fabio--
100773
| 4 4 6
Madrid , Spain
--Fabio--

Started out as a focus puller 8 years ago, I shot movies and commercials in Italy, Spain, Turkey, Uk, Bulgaria, Morocco and USA. Love everything camera related, gear porn and sharp lenses. Sharpness is not debatable.

Fabio
On 6/13/19, 1:57 PM

I had an issue the other day, when the camera got closer than 1m to the talent the sound guy told me he had a very high pulsating noise, his theory was that the ultrasounds bounced in to the talent and got picked from the boom. I switched to the “happy sound guy” mode of the cineRT and that did the trick for a while but on another shot where the camera was even closer I had to disconnect the cineRT. We are going to make more “scientific” test whenever we have a little time.


Your Reply

Keep Informed

About This Community

Any topic, which does not fit to a certain category is welcome here. Start discussions or ask questions. Read Guidelines

Question tools

8 follower(s)

Stats

Asked: 6/3/19, 5:47 PM
Seen: 286 times
Last updated: 6/14/19, 7:48 AM