Eg:
Making the CH32V003 programmable via USB: https://www.youtube.com/watch?v=j-QazXghkLY
CH32V003 "Super-Cluster": https://www.youtube.com/watch?v=lh93FayWHqw
Powering a Nixie Tube from USB with a CH32V003: https://www.youtube.com/watch?v=-4d3PgEXhdY
(A good rule in life in general is to just always watch CNLohr and Bitluni if you're into "useless but amazing hardware projects")
Maybe it could have an IRL use for efficient wake word spotting or the like though.
i wonder if modern continuous optimization algorithms could yield a neural network that would do better than this mfcc approach at, perhaps, even lower computational cost
they seem to have gotten more expensive lately, though (11.83¢ in quantity 500), and lcsc is out of stock on the ch32v003. they only have in stock ch32v203 and up, which costs 37.5¢. https://www.lcsc.com/products/Microcontroller-Units-MCUs-MPU...
digi-key, as usual, doesn't list the part at all
Also be interesting to know if that Voice Control Products ever had a real design win.
I gather the VCP200 was a mask-programmed M6804 microcontroller. The M6804 was a strange and obscure beast, apparently a cost-reduced, internally serial ("1-bit"), partial reimplementation of the M6805, which was one of the first Motorola 8-bit microcontrollers based on the 6800. Max bus speed of 2.75MHz, with an instruction cycle time of 44 microseconds. 32 bytes of RAM and 1K mask-programmed ROM. No ADC. http://www.bitsavers.org/components/motorola/6804/M6804_MCU_...
One should be able to do better with about any modern microcontroller. Then again, for all I know the VCP200 was not fit to even the modest tasks (looks like toy/novelty/hobbyist) it was marketed for back then.
So it would be interesting to hear how articulated you would need to speak and have different people with accents and such.
The Wal Mart page for a similar device is still up at
https://www.walmart.com/ip/Verizon-Wireless-Samsung-Gusto-3-...
Among other things, it had limited speech recognition -- you could say "Call" followed by a name, and it would match that against the address book on device.
We live in strange times.
Handsfree mics in cars still suck and Bluetooth handsfree audio quality sucks too, not sure why this is still a problem. I get backwards compatibility issues but is good compression that difficult in newer devices?
i didn't use the feature very much because to activate it, iirc, you had to either flip the phone open or press a button on a hands-free headset. but obviously this wasn't a bluetooth headset, and the phone couldn't play music, so you wouldn't walk around with it in your ears all the time; unless you'd just gotten off a different call, you'd have to get it out, put it in your ears, plug it in, and then you could use the speech recognition feature
so unless you were a secretary or something, making one phone call after another for hours (to a small number of people), you might as well just use speed dial
OS/2 Warp 4.0 (1996) came with speech recognition and dictation software [2]. The CPUs it supported back then weren't much better than a 10-year old phone.
[1] https://en.wikipedia.org/wiki/Nokia_3310
[2] https://www.os2world.com/wiki/index.php?title=OS/2_Warp_4:_%...
You can imagine employers who might want a record of everything said on their premises for example.
Dunno boss, for a PoC seems pretty impressive to me.
