cebersp

For video conference usages, there are some microphone arrays, which claim to dynamically focus onto an active speaker to suppress surround noise. I wonder, if this could be used for bird songs too, if the direction of the bird's beam is not...

That's interesting! I have not yet had contact with beamforming and do not understand, why you need 4 microphones in a line instead of two. I wonder, if the focus effect could be stronger, if the distances between the microphones would be larger...

Hm??? I have adopted ueForth (ESP32Forth) to Pico2W and found a way to start a second Forth instance in the second core1. Together with the WLAN code, the Forth system compiles to "Sketch uses 467604 bytes (44%) of program storage space." with...

About Overclocking and Temperature Normally overclocking leads to increased temperature not only of the chip but also for the surrounding parts. Temperature of electronic parts can have two different effects: A short time and reversal effect on...

Hi, (no idea, what the Baby has to do with all of this....) Thanks for sharing the benchmark! In my opinion, the numbers without overclocking are most interesting. On the Github, we can find them though and this is given as 600 for Dualcore Pico2...

The general idea to have something, that is form-factor compatible with Teensy but significantly lower cost (and lower performance) is good. I would prefer the T4.1 form factor. Also I would prefer an onboard SD-card holder (1bit interface) and WLAN.

Just to clarify my question about High Pass Filter: I am doing a lot of sound processing for guitar music sounds. I that field highest amplitudes come from low frequencies. So, if you don't want to have any clipping or only moderate clipping, you...

Hi @DD4WH , what's your opinion to use a High Pass filter in a microphone preamp for a USB Soundcard for Birdnet? At the moment I am pondering over something like this: The idea is, that the High Pass shall remove a lot of traffic noise from a...

Hi @YvesD inspired by your post I installed Birdnet-Pi and it's running now. There are some birds, that can be heard, but I have never seen here. I wonder, if some prefiltering HP>100Hz might be helpful to achieve maximum sensivity. Cheers Christof

Hi Yves, Just this morning I had the rare joy to watch a Kinglet in our garden.... Nice project! It is not really clear to me, what for the Teensy is needed in your project? Just as a usb-sound source and i2s master? Will the Pi be online...

It would be great to have a Teensy 4.2W with WLAN!!! Christof

For the ssm2602 they also recommend an additional inductor at the avdd voltage input. They don't give a number for power supply rejection ratio.

The input impedance at 0dB gain seems to be rather different according datasheets.

There is labview. If you want to make something yourself, you might want to have a look at PureData. It is a graphical environment together with the signal processing for PCs. Signals are usually sound there too, but this is not mandatory. You...

Hi, As I am very impressed by this project, I went to the homepage and did some reading. I think, this is very interesting! Perhaps you might want to add some information about memory management? It would be interesting how much memory is...

Hm you are reffering to the eq of the codec chip sgtl5000? That will of course only work for signals routed through it.

Hi, If you want qualified answers to such questions, then you will have to post detailed info, what you are actually comparing here. Full code and detailed information about your electronic setup. Otherwise others can only guess, what you are...

Thank you for your explanations and for the interesting links! Christof

Hi Jon, because I find your application very interesting I am still following this thread. May I ask some questions? Do I understand correctly, that there is already a prototype version of the control software for the rose lathe, that uses the...

Hi @edsut , did you consider to only place the text, not the whole functions into progmem (flash)? PROGMEM & F() - Variables defined with PROGMEM, and strings surrounded by F() are placed only in the flash memory. They can be accessed normally...

Try 4 NiMH rechargable AA batteries (about 5.3V), which should have better high current handling. 3 x alkaline AA is only 4.5V and thus much closer to undervoltage cutoff, and the max current is less than with good NiMH cells. 1000uF is not...

Hi, Not for a teensy program but for a different controller running Forth language I have used a timer interrupt, that accumulates a histogram of the addresses of code that have been interrupted. Cheers Christof