You are not stating enough information for a useful response. What type of noise do you wish to attenuate? Are the two audio sources on separate tracks or channels in VP (Vegas Pro)? Do you have any noise reduction plug-ins (NR-2, RX, Spectalayers)?

I'm wandering the dance floor with the camcorder - with two sound inputs mounted on it - the Sony wireless and the Sennheiser shotgun. If there was a small module I could include in the Sennheiser wiring that would block out the muddy music and just allow close-up dancer reactions - that would be excellent. The correction needs to be made on the floor while recording so once I'm into the Vegas editing - the full band music is not affected. Vegas Movie Studio Platinum in my edit. I appreciate your input on Sound Attenuation, it seems it applies to band members and their foot pedal modules. Now maybe if there is something small for my shotgun mic circuit. Everything fits into a fanny pack.

@John-Newsome

The way I record live dance music performances

A ; Is it music played on a computer ;

1 I ask the original mixings

2 I place 2 audience mikes , for the aplauding and ambient recording

3 I place 2 mikes on stage for feet noise or something said

4 Is there an end speech , the talker gets a wireless lav.

5 This goes into a zoom H6 that records everything and sends a beeb to the cam for sync

The other channel on the cam will also record ambient (maybe usefull mabe not)

6 In the edit the recorded mix gets the first position , applauses added in the end and so on

B is it music played by a live band

Use some overheads on a tripod or a direct out from the mixing table

or even better get both

and all the rest above

Recording live you get only one shot , so get as many different audio recordings as you can get

Get an extra guy with you that knows how to record audio , you can't do both video/audio at the same time

Focus on 1 thing

Thank you. The bands are live with speakers mounted high along sides of the gym - dance floor. I’m on the dance floor close to the dancers - contra dancing similar to energetic square dancing. I need a small noise reduction module that could be included in the Sennheiser shotgun mic wiring on my camcorder. Preference is not to do any noise reduction in Vegas Platinum Movie Studio editing so as to retain full band sound.

@John-Newsome 

I use vst plugins , most of them from Waves

There are different types of noise

You can demo the software if you want / you have to download waves central first

https://www.waves.com/plugins/noise-reduction-restoration#sort:path~type~order=.default-order~number~asc|views:view=grid-view|paging:currentPage=0|paging:number=20