Hiss

[zak forrest]

Can you confirm that only one mic channel was open when you did this, that this isn't the sum of all 4 inputs all open @ mic level? Could you try recording nothing--nothing plugged in at all and see how hissy that is? Do you have a mixer you could plug in, take the camera down to line level and record that way? Thanks for the posting. This noise is another reason that I'd like to know what the Red's real phantom voltage is.

Philip Perkins CAS

sure phil i will do that, but it looks like red is on the case =]

i can confirm though, that it was only one channel (channel 2) that was enabled when i made this recording. the proxy movie had sound in left and right channels and the left was silent with hiss and the right was the channel with my sennheiser and hiss...

 

[philper]

sure phil i will do that, but it looks like red is on the case =]

i can confirm though, that it was only one channel (channel 2) that was enabled when i made this recording. the proxy movie had sound in left and right channels and the left was silent with hiss and the right was the channel with my sennheiser and hiss...

Thanks--well that confirms that it is some sort of system noise, since your Left channel would be a recording made with nothing plugged in in that case, right?

Philip Perkins CAS

 

[Brian Ferguson]

sure phil i will do that, but it looks like red is on the case =]

i can confirm though, that it was only one channel (channel 2) that was enabled when i made this recording. the proxy movie had sound in left and right channels and the left was silent with hiss and the right was the channel with my sennheiser and hiss...

Zak have you tried any other mic inputs say 3 or 4? to see if the noise level was the same on those? Also in the Headphone menu are you listening to 1&2 or Quad. I suggest for the moment you monitor 1&2 or 3&4 whichever you have your mic plugged into. I have been doing a lot of tests on these issues and have not seen any difference between a Phantom powered mic and a self powered one. The suggestion to only enable the inputs you use is also a good one. We are working on the audio issues and are always trying to make the camera better.

briferg

 

[Jeremy Neish]

We have hiss on all four channels, even without anything plugged in. Patiently waiting for a firmware update...

 

[zak forrest]

Zak have you tried any other mic inputs say 3 or 4? to see if the noise level was the same on those? Also in the Headphone menu are you listening to 1&2 or Quad. I suggest for the moment you monitor 1&2 or 3&4 whichever you have your mic plugged into. I have been doing a lot of tests on these issues and have not seen any difference between a Phantom powered mic and a self powered one. The suggestion to only enable the inputs you use is also a good one. We are working on the audio issues and are always trying to make the camera better.

briferg

i have it to monitor 1&2, have not tried audio inputs 3&4 yet, i'll try that tomorow, but i have a feeling it will be the same, based on jeremyn's comment..

is there an estimate ETA on the audio upgrade

 

[Greg M]

Zak have you tried any other mic inputs say 3 or 4? to see if the noise level was the same on those? Also in the Headphone menu are you listening to 1&2 or Quad. I suggest for the moment you monitor 1&2 or 3&4 whichever you have your mic plugged into. I have been doing a lot of tests on these issues and have not seen any difference between a Phantom powered mic and a self powered one. The suggestion to only enable the inputs you use is also a good one. We are working on the audio issues and are always trying to make the camera better.

briferg

briferg,
The hiss is in all 4 channels. We have tried all types of mics and mixers, so it is there regardless of line or mic level. The noise is doubled when selecting "quad" monitoring.

One interesting note;
For a period of time the hiss would disappear occasionally on a reboot...but after rebooting again it would come back. This was prior to a camera repair that was done last week, since the repair the hiss is now there all the time.
We have #83 (pre updates)

 

[chuck colburn]

Sounds like, (no pun intended) a gain structure problem.

 

[Brian Ferguson]

What I hoped to get when I ordered my RED was the digital equivalent of an Arri IIc, so to speak (albeit three perf S35, of course). All additional perks would be icing on the cake.
Good luck!

regista - we applaud your spirit of adventure! And an Arri IIC wasn't even "Crystal Sync" so you had to add a crystal sync motor back in the day to do audio. Not to mention what a loud camera it was anyway...

We are aware of, and are monitoring audio issues with the latest RED ONE build - and have only had the audio firmware to go with our hardware for a few weeks. Hopefully everyone knows that Jim has always said you can take the camera now or wait until fully featured. Most of you know Jim has always gone way out of his way to make things right if you were an early adopter.

Welcome to all who accepted early to the new part of the adventure. Your ears and your eyes! The camera does take timecode jam sync for dual system recording for crucial audio projects.

Even a simple old style clapper on a slate will work as long as you are recording at the same frame rate. This is the first build with audio, it will be better soon, this camera always gets better.

briferg