James Shao

I just found some design file of microphone for 8SoundsUSB from sourceforge. I will see if I can make them here. Do you recommend the xtag2 programmer or xtag3? Thanks.

It's actually RJ11, I found the design file of MIC-RJ11 board from 8SoundsUSB project. I think they can be used in this 16SoundsUSB project as well. So I am trying...

Nice! Will take a look at these microphone designs.

Hello @doumdi, I have read the different microphone design files and related datasheets. I found that the sensitivity of electret microphone is -44dB which is better than the mems one...

Sorry, I was wrong about the sensitivity, mems with -38dB sensitivity should be better than the electret one with -44dB sensitivity. But which pre-amplification is better is still unknown to...

Thank you for your explanation. I will try to make the mems one locally and compare them with the electret one. I noticed in the mems design R7/R6=10 is the...

We have a partnership with a local PCB/SMT factory. We usually ask them to do small volume prototyping. I think they are able to solder these mems microphones. But for...

Hello @vrheaume, I have tried the mems mics these days. They are receiving sound in longer distance than electret ones indeed. And my own modification of the resistor increased the...

By enclosure design, you mean I should wrap the 16SoundsUSB and mems mics up inside a case? I am also thinking doing that to reduce the noise behind the device....

Hello @vrheaume , I just tested the 16SoundsUSB and mems mic with my own modification at R7 in a silent lab (No reflection of sound, and no noise from outside...