Hello,
The stream in Aix use a 4m long cable I made. It use a electret microphone as well but of lower quality.
It use the same resistor/capacitance polarisation as the one taht plug directly into the box, but instead of using the 1.5v from the box input i use a 9v battery.
The electronics is located about alfway from the box, otherwise I get all the static from the power line above the microphone. All shielded wire of course.
The result is satisfying, a little low but OK.
The battery, who wasn't new, is running since about a year now, with no problem. The microphone take virtualy no current, so it can last for years.
Add solarcell to that, and you'r up for decades.
I have in mind to build a mic preamp, using 5v from the USB port, with line out level, close to the microphone. It sould work with extra long wire, like 30m i hope.
Best,
Grégoire Lauvin
06 21 19 26 57
www.gregorth.net> From: petesinc@nujus.net
> To: locustream@locusonus.org
> Date: Tue, 11 Oct 2011 09:22:28 +0200
> Subject: Re: [locustream] oakland stream
>
> >>
> >
> >
> > hmm. okay, I'll try something like this. I just need to get rid of
> > the pulsing static in the signal and think of a way to extend the mic
> > out of the streambox. Is that even possible?
>
> Before you do anything else, try grounding the box efficiently by
> taking a wire from one of the screw fasteners on the outside of the
> box (the screen connector for instance) to ground - a central heating
> pipe or whatever is close by or literally drive a stake into the ground
>
> However it sounds like its coming from the mike — maybe the capacitor
> is faulty this would also explain why you're getting such low levals.
>
> If you have a pc (not a mac) with a mike input you could try testing
> the mike on that see if still clicks on that.
>
> The circuit diagram and values for componenets are here:
>
> http://locusonus.org/w/index.php?page=Locustream+LocusMic
>
> best
> Peter
>
> >
> >
> > Thanks, best -a.
> >
> >
> > --
> > http://aug.ment.org
> > GPG: 0A8D 2BC7 243D 57D0 469D 9736 C557 458F 003E 6952
> >
> > _______________________________________________
> > Locustream / Locus Sonus Streaming Project
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> > _______________________________________________
>
> Peter Sinclair
> petesinc@nujus.net
> http://petersinclair.org
> http://nujus.net
> http://locusonus.org
>
>
>
>
>
> _______________________________________________
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