Notices by Don Romano (alt) (thor@noagendasocial.com), page 51

Knowles SPH0641 MEMS digital microphone. That's a very good frequency response for the human hearing range. You could use this as a calibration microphone. I reckon the bump at 25 kHz is the resonance frequency of the diaphragm. That's probably a compromise. Too high, and the diaphragm would be too stiff, too low and it would be audible. It's also a decent compromise for the ultrasound range, since it leaves the 36 - 70 kHz flat to within +/- 1 dB.

Tomorrow's flight. Visiting my family in my home town. If I flew south the same distance, I would be in Paris. If I flew east, I'd be in St. Petersburg. Norway is a very oblong country.

Tomorrow's flight. Visiting my family in my home town. Norway is a very long country. If I flew south the same distance, I would be in Paris.

A nice YouTube cooking channel:

https://www.youtube.com/user/legourmettv

@leyonhjelm @clacke Without even trying, I'm turning into one of those people who thinks that some things are for adults while other things are for children. It's hard to explain why I feel this way, except to say that it's a bit like when you're about 12 and it suddenly feels wrong to pick up a toy. You're too old for it now.

@leyonhjelm @clacke For a while, I took a mild interest in anime and I kind of liked the look, but I increasingly get the feeling that it's designed for boys who are going through puberty. Not coincidentally, that's also an accurate description of shonen anime, which is the most predominant genre. I also used to like to read comics and comic strips, but I don't feel an attraction to them anymore. Also, I used to think furries were cool, but that was also just a phase.

@leyonhjelm @clacke I'll be 40 in another 4 years and am pretty much eternally single, but I've changed nevertheless. I used to like a lot of things that teenagers and people in their twenties usually like, but I no longer like them, because it doesn't feel right anymore.

I'm looking at digital MEMS microphones because they look like a cheap way of measuring absolute SPL levels at a wide range of audio frequencies. The gain is fixed at the factory and they give you the absolute dB SPL to dB FS curves in the datasheet. All you'd have to do is design an EQ curve with biquad filters to flatten the response and you'd have a fairly accurate meter.

MEMS microphones are interesting. Flat frequency range and a PDM / sigma-delta output. I found one with an ultrasonic mode. It can be clocked up to 4.8 MHz. If you process the bitstream with a 96 kHz Lanczos filter and decimate it 25 times, you get a 192 kHz PCM signal. The upper frequency range of this microphone is 80 kHz. Ultrasonics is the only scenario I can think of where a 192 kHz sampling rate is actually useful and necessary. For music, a Nyquist rate of 40 kHz is more than sufficient.

@mhjohnson I saw that measuring device earlier. It looks like the microphone it uses is out of stock most places. However, there are digital versions of it around, which would arguably be better, because the data sheet specifies the sensitivity in dBFS instead of dBV, and then it's just a matter of translating that to digital values. You'd actually get away with much less circuitry if you just hooked it up to an MCU with a digital PDM input.

I'm surprised to discover exactly zero ultrasonic SPL meters on eBay. Usually, when looking for rare stuff like this, you'd at least come across some expensive second hand equipment.

I'm looking for one because I'm interested in building ultrasonic devices that can repel cats, and if I'm going to be generating uncomfortably loud noises, I'll need to make sure that I'm staying within safe limits. If this was a smoke alarm, my ears would let me know, but they won't help with ultrasound.

I'm pretty convinced that if we hadn't had individuals with the natural confidence to take risks and lead other people, we would've never climbed down from the trees.

Some people develop these skills early. Some develop them with age. Some never develop them.

Having people with these abilities is necessary for progress. If you don't have authority, people won't do what you tell them to, and nothing is accomplished.

In other words, we can't get rid of the powerful people.

♲ @pettter@social.umeahackerspace.se: #CW politics, sexual abuse

Assange
- has admitted to essentially rape
- did some good with Wikileaks
- hasn't done good in a fucking long time
- skipped out on his house arrest in the UK (which is a crime)
- should not be extradited to the US (which are well known to hold barbaric and politically motivated trials and punishments)
- especially not for anything WIkileaks-related
- probably shouldn't have lost asylum rights (it's a super dangerous precedent)
- was not being "illegally detained" in the embassy - he could've walked out at any time to face the music
- was, by all accounts, a fucking nuisance and embarassment to have in the embassy

Ah, so among the three major second-wave feminist movements (institutional, radical and difference feminism), I can actually sort of agree with difference feminism (see the image).

The Nordic countries are mostly concerned with institutional or mainstream feminism. I want them to get over that and move on to difference feminism, which is more enlightened the way I see it.

Even better: Let's just try to make life easier for anyone who lacks privilege of any kind.

And if it's all about power and oppression, why have all these different social movements? Why pretend that there are multiple problems when everything boils down to wanting to subvert power structures?

I think the answer lies in the human need for specifics. Ideologies that are too broad don't become successful.

As humans, we are generally too narrow-minded and don't see beyond our own circumstances.

But once you conclude that domineering people are the problem, not discrimination, the bottom falls out of the SJW movement.

The way I see it, there are strong parallels between incel ideology and feminist ideology, and anyone who can't see that is blind.

Feminism itself is a child of Marxism. You just replace the upper class with men, and here's your new ideology.

All of this is about power and oppression.

The group that SJWs seek to attack seems to be people who epitomise male dominance. SJWs don't really care about guys who aren't domineering and stay out of the way.

What is frequently forgotten is that these dominant males are not only suppressing women, gays and blacks. They dominate everyone around them, and try to get rid of people they don't like or can't control.

The only way to deal with these people is to either beat them or join them. They're not going away.

@clacke It happens. But something tells me that there isn't a heavy overlap between that group and weaboos on Mastodon.

Suave and confident guys like that would be extremely useful to someone like me, who wants to make and sell things, if it weren't for the fact that you can't trust them one bit.

He told a story of approaching a large electronics dealer with a product, and they said "Great idea! We'll go to China and buy it for ourselves."

He then mentioned going to the next largest dealer and actually getting the product sold there.

I think he wasn't lying when he said he went to China to get products, and that he did manage to sell them, but his main strength seems to be salesmanship, not engineering.