tschrama
Senior Member

Maybe place the mutt on top of a mems microphone? as soon as the mutt is being moved this should cause a use contact sound. Trigger the camera from a sound level detector? PDont think you even need an MCU for this

BTW. Using UDP or Serial is almost the same in MATLAB.

Real-time means time-deterministic. You should specify ur max allowed latenctly, which is not the same as saying real-time.

Matlab has UDP data transfer functions. I have gotten beyond 80mbit with matlab.

What bitrate do you need? You can try Ethernet which will give you up to 80..90 mbit per second.

Datasheet has no noise data (except for a 100Hz quote, which is useless because 1/f is a bit high on this part). The Spice model is pretty accurate too, and it has a low source-resistance. From source-resistance and...

1.5nV. Got one on my bench now. Read TAOE

You mean, creating a sparse sampled array? Sorry, dont know much about that.

Ad743, AD745 are fast enough for 1kHz sounds, LT1113, LT1792 and the newer ADA4817 are low noise candidates from Analog Devices. The sub 1nV preamp in TAOE is in figure 3.3.4 page 152.

OMG, did you see that price? You can get those in SMD for 38cts/piece, or 10cts/piece per 1000. But try the opamp first, opa1642 or 1654, opa134 etc...

PS I don’t understand the unit on that Y axis. Shouldn’t that be dB re 1uPa/sqHz. ?

Some comments: For low noise you can try J309,LSK170,LSK489,INF3601. J309 is 35 cents and will be much lower capacitive load too. Look in The Art Of Electronics 3rd edition for a 1nV/sqHz preamp example and more...

that is a nice website with examples... You could start with something simple as this:

Well, I would keep the signal analog and design an analog switch bank. Or were you thinking ADC to teensy routed to serveral DACs?

You can use 12 switching JFETs like J175. Use 12 GPIO to turn on and off those JFETS.

Single GPIO and a resonator tank after it. Modulate the amplitude with a LDR? Or JFET?

https://sound-au.com/

Thanks Paul! :D