Shrutika’s Status Report for 04/18

I have been playing with the microphones this week.

Turns out that macOS Catalina doesn’t support Audacity, and then I tried to connect to an old laptop but the USB ports were broken, and had some other adaptor issues… also it’s super unclear if the mics are directional or omnidirectional (the manual says both somehow).

I gave up on Audacity for now (might try to go back to it later if I do end up needing baffles) but currently am trying to figure out how to measure amplitude in pyaudio. I was able to plot the wav files in Matlab and it seems like the mics are picking up pretty different amplitude of sounds without even adding on baffles, just from being turned in different directions. If once I figure out how to compare volumes with pyaudio and start testing they’re not accurate enough, then I’ll try to play with graphing/testing baffles more.

Our hand gesture detector is getting there – we’ve taken tons of pictures of people’s hands this week, and the latest check when Neeti ran it, we were at 90.36% accuracy!