Please help! Atem TV HD soft audio level

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Kenny Shem

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Please help! Atem TV HD soft audio level

PostThu Apr 20, 2017 11:29 am

Hi all. I'm using Sennheiser G3 wireless set into the analog inputs behind the switcher. No matter how much audio gain I adjust in the G3, the audio level is very low. As low as about -30 or -20 db. Increasing the audio level in the audio mixer software doesn't help much. Adjusting too much gain from the G3 will cause peaking and distort the sound. In the end I have to plug the G3 into one of the camera and have the audio sent thru the SDI cable into switcher and it works great this way.

Is it because atem HD only accept line level audio and not mic level?

Anyone has such problem? Thank you!
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Thomas Seewald

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Re: Please help! Atem TV HD soft audio level

PostThu Apr 20, 2017 11:53 am

Is it because atem HD only accept line level audio and not mic level?
Yes.

Insert a small amplifier or mixing console for bringing mic level to line Level.
thos-berlin - Thomas S e e w a l d
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Tom_Bassford

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Re: Please help! Atem TV HD soft audio level

PostThu Apr 20, 2017 12:07 pm

You need a mic preamp or small mixing desk.


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MambaFiber.com

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Re: Please help! Atem TV HD soft audio level

PostThu Apr 20, 2017 1:25 pm

In the G3 receiver menu you will find an item called AF Out. Set this to the highest number, and the receiver will output line level. The lowest value will give you a mic level output.

Set the transmitter menu Sensitivity value so that the G3 meters are the correct level with your microphone, usually -9 for quiet speaking, -12 or -15 for loud speaking. YMMV.
Greg Bellotte - owner
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Kenny Shem

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Re: Please help! Atem TV HD soft audio level

PostSat Apr 22, 2017 7:54 am

Thanks all for the replies! If I just use one of the XLR input port, there seems no way in software to duplicate the channel onto the other unused channel to make it stereo right? Only way is to use a physical splitter?
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Denny Smith

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Re: Please help! Atem TV HD soft audio level

PostSat Apr 22, 2017 3:51 pm

You can use a small mixer like the Sound Devices MixPre and Pan the mono input to feed both channels of audio. If you stsrt with a single mono audio source, duplicating it to two channels, does not make it a stereo signal. You need two Mic's or a Stereo Mic to get a true stereo feed. Panning the single feed off center to two channels of output will give a stereo like effect, but still not true stereo, just a dual mono feed.
Cheers
Denny Smith
SHA Productions
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John Kane

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Re: Please help! Atem TV HD soft audio level

PostSat Apr 22, 2017 11:49 pm

If you are comfortable with a soldering iron you can make a cable that has 1 x female XLR to 2 x Male XLRs using thin mic cable. Very useful adaptor to keep in the tool kit.
Alternatively here is a link to one https://www.bhphotovideo.com/c/product/252312-REG/Hosa_Technology_YXM_121_XLR_Female_to_2.html
John Kane
VITC Video
Christchurch, New Zealand
1 x 4K 2M/E, 1 x Videohub 40x40, many mini converters
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Denny Smith

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Re: Please help! Atem TV HD soft audio level

PostTue Apr 25, 2017 2:25 am

A Y cable works OK with +4dB line level signals, but not with mic level signals. You need a preamp/mixer to split the signal out two outputs to feed the ATEM.
Cheers
Denny Smith
SHA Productions

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