This week, we are hacking a tiny little gadget, the USB soundcard, and turn into a studio quality microphone. It's a microphone that carries the whole package, it has a shock-mount, pop filter, preamp and an internal DAC. The project was housed on a Retro Altoids container. Its cardioi...
Now onto the impedance converter. We are using the same one from thisinstructablefor the TSC-1 microphone and a two channel version for the dual diaphragm capsule. I can't stress enough how good these are and how well they perform. There are two functions that the internal electronics need ...
formanceshavebeenrealizedonaCMOSsubstratecontainingdc–dcvoltageconvertersandpreamplifiers.Themeasuredsensi-tivityoftheintegratedcondensermicrophonewas10mV/Pa,andtheequivalentnoiselevel(ENL)was27dB(A)re.20Paforapowersupplyvoltageof1.9V,whichwasmeasuredwithnobiasvoltageappliedtothemicrophone.Furthermore,aback...