View Full Version : Field Audio Question


Sean Seah
January 8th, 2013, 09:59 AM
I have got a Sound Devices Mix Pre D coupled with a marantz PMD661. They work excellent together i sometimes i hook them up with a Senny 416. During field interviews (stationary) I find that the audio headspace can be very big. As in the soft and big gap can be quite huge. I'm not a trained sound guy so I like to know if, it is a practice for the sound man to constantly adjust the gain?

We tried doing it and its tough when you need to hold the boom pole with 2 hands. We can only do it in between takes. Or it is due to the gear? Would a better mixer like the Sound Devices 302 or 552 work better?

Daniel Epstein
January 8th, 2013, 11:05 AM
Sean,
This is pretty normal. Many people figure out how to hold the boom with one hand so they can adjust recording volume as needed. For a single person audio crew getting a stand with clamp to hold the boom is often part of the solution. Different mixer wouldn't change the necessity to adjust volume on recording very much. You should be gentle with your adjustments so you don't hear big change in background noise when changing recording volume. If the background noise is low it is usually easier to bring up quieter sound in post than it is to get rid of distortion of recording too loud. This is why it is good to get to know what your limiter sounds like when active. A soft spoken person who occasionally starts with a lot of energy then trails off will benefit from an active adjustment during recording. You have to make that judgement on the fly.

Steve House
January 8th, 2013, 11:06 AM
Not very likely it's due to the gear and substituting a 302 or 552 probably won't make any difference. The issue is more likely due to a lack of experience or skill on the part of the boom operator. He has to be adept at following the conversation and the movements of the subject so that no matter how the subject moves, the mic is always in precisely the same location with respect to his mouth. It's a common misconception that a boom operator is little more than a living mic stand - nothing could be farther from the truth. It is a role on the production team that takes skill and attention to detail every moment during the take.

Garrett Low
January 8th, 2013, 11:42 AM
Steve as usual hit it on the head. Here's an example of a boom op earning his day rate.

long take - Damasonico boom operator - YouTube (http://youtu.be/4mPQL9PUI-w)

Trevor Dennis
January 8th, 2013, 03:24 PM
Steve as usual hit it on the head. Here's an example of a boom op earning his day rate.

long take - Damasonico boom operator - YouTube (http://youtu.be/4mPQL9PUI-w)

My goodness! That was almost like ballet. And was that a radio transmitter at the end of the boom pole or a recorder? Whatever it was, it looked heavy.

I loved the bit at about 2:20 when the talent got animated, and the mic was moving so quickly you had to wonder how anyone could control it. Very impressive, but not a job I’d ever want to do.

Steven Digges
January 8th, 2013, 04:25 PM
+ 1 on everything Steve said.

That was painful just to watch! And the boom operator new the whole time one low dip and it would be another take. Just because of him, who would want to get reamed AND have to go through that again. It happens.

Sean Seah
January 8th, 2013, 09:28 PM
Wow that is impressive! Thks for the great tips. Will have to work harder on the set!

Don Bloom
January 8th, 2013, 09:34 PM
That operator must have some great guns! Wow! I'll bet blocking that out the operator just wanted to kill the director!

Gary Nattrass
January 9th, 2013, 02:44 AM
I am sorry but that is not how to hold a boom, you can see the OP struggling to control it at times as their hands are far too close together causing it to be put in positions that could cause serious back strain, you should never have to place a boom behind or on top of your head and it shows bad positioning. You should never have to bend like that either and if the OP was holding the boom correctly in the first place half of the strange positioning would be un-necessary.

Also the boom is far too overloaded and is bending way too much, once again this will cause control issues and potential strain to the OP.

The OP is also facing the wrong way with the camera behind them so is having to look behind to see where it is, God or other higher beings gave you eyes on the front of your face so to stand with the main bit of kit behind you is bad operational practice and means you can't see clearly where the next camera position or framing will be.

When holding a boom the front hand should be further forward with the back hand pulling downwards to control the boom which is pivoted around the forward hands fulcrum point, the feet should be wider apart and the whole weight of the operation should be balanced around you main body preventing awkward positioning which could cause neck or back strain. The boom should be kept in front of your face as much as possible so you can see down the arm and judge distance properly, you should also always be facing with camera so you can follow it's movements as well as the action.

Trevor Dennis
January 9th, 2013, 03:58 AM
Gary that is actually reassuring to hear, as it looked painful with his back arched that way for so long. Just wondering about space issues though. With so many people competing for limited floor space — especially with those dashes in and out of the door between the two rooms — he might have had to stand side on in able to fit!

So what is going on at the end of the boom pole? I assume it is a transmitter, but it would have exerted both leverage and inertia/momentum way out there, which would surely make life more difficult with such fast boom movement.

Gary Nattrass
January 9th, 2013, 05:35 AM
Yes I always stand side on but to face the wrong way with you back to the camera is asking for trouble, will look again and see if I can see what is on the end of the boom but it should not bend like that and is actually not safe as it is out of the control of the OP.

Gary Nattrass
January 9th, 2013, 05:44 AM
Just watched it again and yes there looks like a small mic on the end of the boom with either a recorder or a radio mic. To be honest it's actually not a very good example of boom operation anyway as the OP is not even listening to where the mic is placed and it just waving it around to try and get as much as possible but I suspect the results will not be very good.

The OP is also not even using the boom pole correctly and has extended the two front sections and left the two at the OP end unused, the thickest and strongest part of a boom is the sections near to you and if you have several extensions you should use them evenly rather than just pull out the first two.

As I have already said the OP is facing the wrong way and all those actors and chairs and even the camera shooting the video are totally behind and in a blind spot, you should never assume that people will be aware of what you are doing and all it would take is for you to step back and trip over one of them and cause an accident.

John Willett
January 9th, 2013, 08:29 AM
My goodness! That was almost like ballet. And was that a radio transmitter at the end of the boom pole or a recorder? Whatever it was, it looked heavy.


Looks like a Sennheiser SKP 500 or SKP 2000 plug-on transmitter (providing phantom power to the mic.)

Paul R Johnson
January 9th, 2013, 08:53 AM
I had an accident a few years ago and soon learned that bad booming stances really caused severe pain, and Gary's left arm as the fulcrum (my strongest one) is the only way I can work now. If I use a radio, I always have it on the other end with a cable, as it balances better. If you have a heavy windshield and sodden hairy rycote on a long boom, it can really be hard to control, and I tend to almost rigidise my left arm, hold it more towards the middle with a biggish overhang, so I can use my right hand to 'steer' the pole, and doing the twist from there - you have to stand feet apart too, to keep your balance, but I find that you can get a quick 2 ft in or out just be moving arms from left to right. More than two feet needs your body to move too. An old physio friend of mine emphasised the importance of keeping the pelvis level, and avoiding S shaped spine movements sideways.

I have to admit that I now find prolonged boom work a bit much - especially if there's a lot of weight up top!

Gary Nattrass
January 9th, 2013, 09:52 AM
Looks like a Sennheiser SKP 500 or SKP 2000 plug-on transmitter (providing phantom power to the mic.)

Not sure John as I thought it looked more like a loop of cable coming out of the mic and then something like a zoom or a micron type transmitter taped to the end of the boom arm.

The worst boom I have had to do was on an ITV drama ser called Supergran and as it was shot outside at tynemouth on the coast it involved a sennheiser 816 size mic in a a full blimp on the end of a full panamic with three foot extension. Fortunately all the interiors were done with a 416 so I could take the blimp off.

My back survived the boom swinging 80's but it was the hi band u-matic recorders on news op's that broke mine as they were really hard to balance on your shoulder evenly, I used to wear a weightlifters belt for a few years but then got a job in post dubbing so saved any long term damage.

Recordists these days have it easy with all those lovely portabrace or petrol bags and harnesses, the best we got was a nagra in a leather bag!

John Willett
January 10th, 2013, 02:24 PM
Not sure John as I thought it looked more like a loop of cable coming out of the mic and then something like a zoom or a micron type transmitter taped to the end of the boom arm.

It looked a bit square for that.

But it is common to run a short cable from the mic. to the plug-on transmitter as it makes boomng easier.

But I may be wrong, it was a bit fuzzy.

Gary Nattrass
January 10th, 2013, 04:31 PM
It looked a bit square for that.

But it is common to run a short cable from the mic. to the plug-on transmitter as it makes boomng easier.

But I may be wrong, it was a bit fuzzy.

Either way there is far too much weight at the mic end, it would have been better to keep the transmitter at the op end although I use an AT875 r with an skp 500 mounted in a rode PG2 on gitzo carbon fibre booms without any real problems!

Josh Bass
January 10th, 2013, 08:12 PM
There is some kind of perverse pleasure in seeing everyone ooh and ah over something and then having someone else come in and say "no, all of that was wrong." Is there a German word for that? There should be.

Gary Nattrass
January 11th, 2013, 03:07 AM
I think the polite English phrase is "style over substance" and sadly the media industry is full of it these days!

I suppose the German would be "FooBarr" ??

and the American "Bullshit" ???

John Willett
January 11th, 2013, 06:22 AM
Either way there is far too much weight at the mic end, it would have been better to keep the transmitter at the op end!

I agree, that would be much better.

Gary Nattrass
January 11th, 2013, 07:52 AM
I agree, that would be much better.

Even better to have one of these at the Op end too so they can hear the mic and listen to where it is placed:
ART Pro Audio (http://artproaudio.com/artcessories/headphone_amps/product/mymonitor/)

useful for wireless and cabled boom operation and if using cables you could even feed a talkback circuit or IFB into it, they cost less than £50.

Paul R Johnson
January 11th, 2013, 09:54 AM
If you are using a wirless link, an extra receiver works pretty well too.

Gary Nattrass
January 11th, 2013, 10:17 AM
If you are using a wirless link, an extra receiver works pretty well too.

That's where I liked the old EW100 receivers as they had a headphone output with a level control.

Steven Digges
January 11th, 2013, 12:01 PM
Gary & Paul,

I have the EW100. I think you just taught me something. Are you saying that in a situation where you don't want your field mixer and bag hanging on you to monitor the mix as I always do, that you can tune two receivers to the same frequency as the mic? Then put the mixer down and use the EW100 receiver with your cans in the AF out for a monitor?

Since I know exactly what happens when two transmitters are on the same frequency it scares me to run two receivers that way. I know it is not the same issue as transmitters but I have never been sure if both receivers would get exactly the same level and quality of signal from the mic?

Obviously I am not an audio genius or I would not be asking that question. That is why I hire boom OPs whenever I possibly can. I have never understood why an A-1 at a FOH console is always considered mandatory, even if it is just two mics but trying to get my clients to pay for a good field mixer is like pulling teeth sometimes. That is backwards to me. Almost any basic tech can ride gain on a stage mic....But a boom mix.... that's a different story!

Steve House
January 11th, 2013, 12:26 PM
Two receivers are usually no problem. I say "usually" because it can happen that leakage from the internal oscillators in one of two receivers in very close proximity to each other can be picked up by the other receiver and interact to produce noise.

Why would you expect your clients to pay for a field mixer? It's a basic piece of kit, not an extra-cost add-in, and IMHO charging them when you use it is like charging them for each mic cable. Or do you use 'field mixer' in the sense of a person whose job is to operate the audio gear?

Gary Nattrass
January 11th, 2013, 12:34 PM
We have used two receivers with one transmitter for decades in UK TV to cover huge or multiple areas, I even use older G1 radio mic receivers for multi cam talkback but now have an in ear monitoring system that will do the same!

One other handy application is to plug in an skp 100 to my mixer mono output and feed multiple cameras with guide audio via a receiver on each cam!

Greg Miller
January 11th, 2013, 12:51 PM
Two receivers are usually no problem. I say "usually" because it can happen that leakage from the internal oscillators in one of two receivers in very close proximity to each other can be picked up by the other receiver and interact to produce noise.
In theory that's quite true. But IMHO the receivers would have to be pretty poorly designed and pretty poorly built for that to occur. The receivers' IF sections should be well shielded to prevent secondary emissions (and in fact the FCC has specifications about such things). Think about the thousands of people listening to the same broadcast station at the same time... although, of course, those receivers are usually more than a few feet apart.

For that matter, if you're using a second receiver to feed your cans, you could also feed it into a second field recorder, and you'd have a backup track in case there were dropouts on the "main" receiver/recorder track.

Steven Digges
January 11th, 2013, 01:06 PM
Two receivers are usually no problem. I say "usually" because it can happen that leakage from the internal oscillators in one of two receivers in very close proximity to each other can be picked up by the other receiver and interact to produce noise.

Why would you expect your clients to pay for a field mixer? It's a basic piece of kit, not an extra-cost add-in, and IMHO charging them when you use it is like charging them for each mic cable. Or do you use 'field mixer' in the sense of a person whose job is to operate the audio gear?

That was just bad typing on my part. I do not nickle and dime clients over gear. I also do not usually refer to boom operators as "field mixers" but I did then. Most of the time I also don't refer to them as "audio guys" especially around clients, I call them the "A-1" to be more respectful of their specialty.

John Willett
January 12th, 2013, 07:45 AM
That's where I liked the old EW100 receivers as they had a headphone output with a level control.

Only the mains powered EM 100 had this in the 100 series.

You needed the EK 500 pocket receiver for the headphone output - the EK 100 did not have this.

Gary Nattrass
January 12th, 2013, 08:26 AM
Only the mains powered EM 100 had this in the 100 series.

You needed the EK 500 pocket receiver for the headphone output - the EK 100 did not have this.

I stand corrected John, it was someone else who owned those EK 500 receivers when we used them so I must have got confused over which one had the headphone output.

It is a shame that the G2 or G3 don't have headphone outputs but I suppose that would affect the sales of in ear monitors.

Paul R Johnson
January 12th, 2013, 09:42 AM
I'm using 6 Sennheiser IEm receivers on one transmitter for talkback monitoring at the moment - works amazingly well over a decent range. Our A2 radio guy also has another so he can hear the radio mics when he needs to visit somebodies dressing room to cure a problem - very handy!

John Willett
January 13th, 2013, 02:35 AM
I stand corrected John, it was someone else who owned those EK 500 receivers when we used them so I must have got confused over which one had the headphone output.

It is a shame that the G2 or G3 don't have headphone outputs but I suppose that would affect the sales of in ear monitors.

The headphone amp adds cost, so it was left off the 100 series but put in on the 500 series.

The EK 500 G2 and EK 2000 (ie: EK 500 G3) does have the headphone amp.

You *can* use the EK 300 IEM receiver to do the headphone job, but you have to switch off the Pilot squelch for it to work as the IEM uses a different Pilot frequency.