Recent content by lychrel

Hey, that's really cool! Thanks! Basically I wanted to, after adding the one inverted signal to the normal one, check each frequency bin and see if there's any significant "difference" there between the two signals -- i.e., if the sum of them is some significant amount greater than 0, then one...

Hi! This is my first Teensy program, and, though I can't yet test it on my Teensy (a component from my setup broke, and the replacement is still shipping), I'm sure I'm doing something obviously wrong, and I have a few questions. I want to take two audio signals (one from each ADC), low-pass...

Actually, I got stuck running it because of a "no serial port name defined" error. I trouble-shot from this post, and that got rid of the error, but I still couldn't get any serial output.

I'd like to be, essentially, as precise as possible. (Definitely more precise than 47-Hz bins, though I guess I could interpolate...) My range is 0 to 1 kHz.

Okay. I think I'll investigate both FFT decimation per Mr. Stoffregen's suggestion and using the guitar tuner code. I'll just have to see what works better. Again, thanks! Wow. I had no idea a single order filter would be such a bad idea. I guess digital really is the way to go, then. I don't...

I've run into another question with my project. Fair warning, this is probably a really stupid question. I have six electret condenser microphones in my project, and, of course, only two ADCs (I'm using the Teensy 3.1). I want to pass the signals to the Teensy and convert them to digital and...

If I have a single-order analog low-pass filter (at around 1 kHz) on the signal before I pass it to the Teensy, would that obviate using a digital filter, or would you recommend it anyway?

Oh my gosh! This is incredibly helpful; and I've never seen a forum response this quick or in-depth! This is quite the community. I have my college applications due tomorrow, so I won't be able to answer a bunch of the questions that my original lack of detail warranted. I'll get back on here as...

I'm using Teensy for an application wherein I'll only be analyzing signals of the frequency domain 0 to 1 kHz, and I'd like to have a higher-precision FFT that spans the 512 bins with a smaller frequency-difference between each two. I'm not very good at this sort of thing; could someone point me...