Wireless DB Metre

[svincent]

Hi Guys (and Gals)

 

Just wondering if anyone has come across a wireless, riggable DB meter

 

When I say wireless I mean to hook up to a PC if it has mains power then all the better!

 

What I'm trying to achieve is to rig a DB meter on the circle front and have it wirelessly hook up to a PC, take a reading and save it to the PC (so it needs software with it as well) - being able to set a timetable for when it takes reading would be cool as well (when I say cool I mean rather essential!)

 

Anyone seen anything like that?

If not does anyone fancy inventing, manufacturing and selling it? :)

 

I did do a blueroom serch for this but couldnt find anything this specific - if I've missed somthing I do apologise!

 

Cheers

sVincent

[Chappie]

I would ask someone like this

[bassnote]

There are defiantly bits out there that remotely monitor sound and report back to FOH desks, they are used at festivals to do remote noise monitoring (over internet) from peoples houses. Can't think of what make they are though...

[MarkPAman]

Is this what you want?

[Simon Lewis]

An idea (shown on another forum) is a measurement mic connected via a phantom psu to a small radio pack, then the receiver plugs into Smaart (or other noise monitoring system). This gives you a completely wireless remote mic. You`ll need to calibrate before putting the mic out in the auditorium.

 

Other approaches would be to place the mic remotely but use cable between, or to simply use a logging sound level meter / one set to take Leq readings at set intervals and save this to memory.

 

The exact method you need depends on how easy it is to access the mic position, and whether it might be better to cable this (gives you more reliability and no need to change batteries). If you need to monitor the noise in real time, then a meter or PC is needed. If you just need time / exposure data, you can get a dosimeter that can be stuck somewhere quite discretely and interrogated via IR.

 

Simon

[Chappie]

An idea (shown on another forum) is a measurement mic connected via a phantom psu to a small radio pack, then the receiver plugs into Smaart (or other noise monitoring system). This gives you a completely wireless remote mic. You`ll need to calibrate before putting the mic out in the auditorium.

Yes, we do this regularly in large auditoriums for Smaart or Sim and it works very well.

[J Pearce]

How does the non-linearity of the compander circuit affect this technique?

[dbuckley]

How does the non-linearity of the compander circuit affect this technique?

Doug notes that this particular setup is non-companding.

[Chappie]

How does the non-linearity of the compander circuit affect this technique?

We use it primarily for functions that don't require precise accuracy across the whole range, such as time alignment, so it really isn't a problem. And whilst a magnitude/ phase trace of a radio mic system doesn't show the whole picture with this regard, you might find it interesting.

 

http://www.soundbydesign.net/images/hosting/uhf-uhf-r.jpg

 

The red trace is a Shure UHF-R, the purple is a Shure UHF at full output and the blue is the same UHF but with the output set to 3 o'clock.

 

Edit to make image work!