There are some "electret" condenser microphones that can be powered by
an internal battery instead of phantom power.
On 9/8/2013 9:14 AM, Igor Roshchin wrote:
Fri Sep 6 00:47:24 EDT 2013
Rob Studdert wrote:
On 6 September 2013 03:08, Igor Roshchin <str at komkon.org> wrote:
Hi Matthew,
Thanks for sharing this one.
I see that some reviews and questions to the answers suggest that the
microphone is designed to be powered (although not with the phantom
mic
power? - sounds weird?).
I understand that if you use it with a computer, you need to enable
the
"microphone boost" option.
It is not a problem by itself, but depending on the device you are
planning to use it with, you may have some difficulties with the level
of the signal.
Condenser or capacitive mics (which this obviously is) need
pre-amplification close to the module and ao require power. Larger
mics are often battery powered, balanced pro-mics use Phantom power.
This type of mic is supplied DC from the mic socket and is generally
termed Plug-in Power, of course not all devices provide this mic
power.
http://www.bhphotovideo.com/insights/blogs/pro-audio/using-lavalier-microphones-recorders.html
http://support.pentaximaging.com/node/616
Cheers,
--
Rob Studdert (Digital Image Studio)
Thank you, Rob for the reference.
While knowing that condenser mics require power, I just have never
spent a moment to think about that in relation to the fact that the
computers and recorders must provide that via the input port.
Now, I am curious, and couldn't find the answer by googling:
"Boost" in Windows' microphone settings, - does it turn on the plug-in
power, or does it really boost the sound card (pre-) amplifier?
A curious thing:
While reading and searching, - I also discovered, that apparently, Macs
have (had?) a special microphone with a special 3.5mm (aka 1/8") plug:
http://www.directproaudio.com/shop/accessories/guide/microphone-sound-card.cfm#Macintosh
Igor
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