Search found 2923 matches

by JR.
Fri Sep 20, 2019 2:14 pm
Forum: The Peabody Lounge
Topic: Entropy
Replies: 1021
Views: 365173

Re: Entropy

I didn't read the link but recall that some mass merchants use facial recognition to manage aggressive serial shoplifters. walley world video tapes the self check out stations, or says they do, to help keep customers honest. I keep coming back to that scene in minority report where he is walking in ...
by JR.
Fri Sep 20, 2019 12:39 pm
Forum: The Peabody Lounge
Topic: Entropy
Replies: 1021
Views: 365173

Re: Entropy

Bleach in our town water is all too common... I don't use the tap water for much...

Amusing (or not) a couple months back we got a "do not drink, boil water" notice in snail mail, about a month after the incident. :roll:

JR
by JR.
Fri Sep 20, 2019 10:13 am
Forum: The Peabody Lounge
Topic: Entropy
Replies: 1021
Views: 365173

Re: Entropy

Maybe you could fill it up with vodka, but that is probably close to as much work as removing it to carry home.

JR

PS: Notice how booze is my answer for almost everything. :lol:
by JR.
Fri Sep 20, 2019 10:11 am
Forum: Build
Topic: VCA Multiplying DAC.
Replies: 5
Views: 37

Re: VCA Multiplying DAC.

I looked at MDACs back in the 80s trying to source replacements for the expensive and modest fidelity VCAs of the time. They did not look promising back then for audio gain manipulation. Hopefully modern MDACs are better/easy to apply. As I recall early DPOTs were not very good either, now they don'...
by JR.
Tue Sep 17, 2019 6:30 pm
Forum: Build
Topic: Audio RMS versus Peak
Replies: 21
Views: 221

Re: Audio RMS versus Peak

THD cancellation. With a differential topology, if the two legs are exactly the same then you have cancellation of all even harmonics. This is from theory and applies at any level. This theoretical result I have seen effective in bridged power amps. Cancellation of even harmonics does decrease THD,...
by JR.
Tue Sep 17, 2019 2:19 pm
Forum: The Peabody Lounge
Topic: Entropy
Replies: 1021
Views: 365173

Re: Entropy

nice... I use sub micron air filters to remove mold spores and other nasties from inside my house...

JR
by JR.
Tue Sep 17, 2019 12:55 pm
Forum: The Peabody Lounge
Topic: Entropy
Replies: 1021
Views: 365173

Re: Entropy

After not being in the mountains for nine months I discovered I forgot to empty the water filter for the well. It cracked. The local hardware store didn't have the 3M AquaPure filter I was using. The 3M was about $175. I figured I'd give the Culligan they had a shot. They didn't have the best water...
by JR.
Tue Sep 17, 2019 11:58 am
Forum: Build
Topic: Audio RMS versus Peak
Replies: 21
Views: 221

Re: Audio RMS versus Peak

I am not sure what exactly a balanced VCA configuration is. Using two (one for positive zig, and another for negative zag) will sum to +6dB more signal, while noise should combine incoherently to raise noise floor +3dB. So net 3dB S/N improvement for 2x cost. People don't seem to care about mass-pr...
by JR.
Tue Sep 17, 2019 8:51 am
Forum: The Peabody Lounge
Topic: Entropy
Replies: 1021
Views: 365173

Re: Entropy

JR - Congrats on your cleaned MAF sensor. Hold on to your old car - new ones from the last couple of years are like nanny's. Normally I would have replaced this car by now, but think i will just ride this car into the sunset... (Blue book is still something like $13k, not bad for a 22YO car). Had t...
by JR.
Mon Sep 16, 2019 6:56 pm
Forum: The Peabody Lounge
Topic: Entropy
Replies: 1021
Views: 365173

Re: Entropy

Today my replacement K&N air filter arrived so I could finish my air intake maintenance. I removed the MAF sensor housing and gave it a proper douche with spray cleaner out on the driveway... The spray can said to give it 10-12 shots and that seemed excessive (even though it was my neighbor's can). ...