So I'm looking to get a bit more value out of this little 'ol microphone I have. It has a Vcc, GND, and an analog data port on the breakout board. Could I splice a 3.5 mm jack wire and connect the microphone to my computer's microphone port to record the sound in Audacity? What voltage does the 3.5 mm jack use? Has anyone tried doing this with an electret microphone?
Electronic – connect the ADMP401 straight to the computer’s microphone jack
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The datasheet contains microphone connection for regular electret microphone (middle of the schematics on p.13 -- this involves 2k2 bias resistor to MIC_BIAS, and input on MIC_L-/MIC_R- via 47nF capacitor).
However in your case, the microphone already contains amplifier. So I advice connecting microphone in non-differential way: MIC_L- goes to ground, MIC_L+ goes to microphone output via small capacitor (any value of 47nF or more will work). Make sure to use 'lime mode' and not 'microphone mode' in your setup.
Yes you can plug it in the microphone jack with a few extra components.
Here what schematic I have found on LIRC's webpage (by Matthias Ringwald):
As far as I know most IR signals are Manchester coded:
- high to low transition means 1
- low to high transition means 0
Or the other way round because there are two conventions.
Be sure to check SB-Projects for information regarding different IR protocols.
To view the signal on your PC I recommend Christian Zeitnitz's Scope and to record it try Audacity.
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Best Answer
That "microphone" is actually a complete assembly that includes a amplifier. As the spec says, it puts out about ±200 mV when you talk normally into it from arms length.
You want to connect this to the "line in" jack of your computer, not the microphone jack. The line in jack is meant for signals like this that are already at a roughly standard ±1 V amplitude. The microphone input assumes signals from a bare microphone, and therefore applies lots of amplification. The result would clip and distort with the signals from your microphone assembly.