dwiel (u/dwiel) - Readit News

dwiel commented on How to measure frequency response of a speaker at home crabman.me/does-soundcore... · Posted by u/philip-b

crazygringo · 9 months ago

I've always wondered... is there some way to mathematically "solve" for this with multiple microphones and multiple speakers?

Like with 2 of each, or 3 of each, where you play the same waveform through every possible pair of speaker and microphone, you can solve some kind of system of matrix equations to determine the only possible combination of responsiveness at each device at each frequency?

Or do you just need a reference microphone with known characteristics, period, end of story, because math can't do it?

(Obviously from a practical perspective you want the reference microphone... I'm just curious about in theory.)

dwiel · 9 months ago

what if you move the microphones and speakers at varying but precise speeds so that doppler shift can be used to shift frequencies? you could play a tone on the speaker, shift the relative velocity (spin the microphone really fast?) and calibrate a frequency range of the microphone. with a calibrated mic frequency range, you can now calibrate that range of the speaker. repeat. each calibration step is going to accumulate error. to be clear, not a practical solution, but fun to theorize.

dwiel commented on A new Suez crisis threatens the world economy economist.com/internation... · Posted by u/Brajeshwar

injeolmi_love · 2 years ago

The problem with 3 is global radicalization. Attempts to suppress populations can only work with the ability to convince the population to take your side; in the case of large scale bombing campaigns, the result is more radicalization and an increase in attacks elsewhere.

dwiel · 2 years ago

In some situations the US has gone to war with countries who not long after are close allies. Germany comes to mind, but there are others. In other cases the situation you describe is more accurate. What are the primary factors that influence one outcome or another?

dwiel commented on Google Brain founder says big tech is lying about AI danger afr.com/technology/google... · Posted by u/emptysongglass

buzzert · 2 years ago

> many many AI researchers (such as Joshua Bengio and Geoffrey Hinton) who don't stand to gain monetarily have expressed these same concerns

I respect these researchers, but I believe they are doing it to build their own brand, whether consciously or subconsciously. There's no doubt it's working. I'm not in the sub-field, but I have been following neural nets for a long time, and I haven't heard of either Bengio nor Hinton before they started talking to the press about this.

dwiel · 2 years ago

As someone who has been following deep learning for quite some time as well, Bengio and Hinton would be some of the first people I think of in this field. Just search Google for "godfathers of ai" if you don't believe me.

dwiel commented on Chromebooks will get 10 years of automatic updates blog.google/outreach-init... · Posted by u/twapi

RistrettoMike · 2 years ago

I've seen a few folks here doubting that Google would actually follow through with this (which I think is a valid concern with their track record), but I'm more curious about if the hardware would hold up to 10 years of updates.

Granted, not all current Chromebooks are as low-specced as they used to be, but with the way the modern web has been gobbling up system resources the last few years I can't imagine a Chromebook actually being usable through an entire decade of bloat (whether it's technically supported via updates or not).

dwiel · 2 years ago

Not only this but my Chromebook wasn't upgradable even though the parts weren't soldered in. I tried upgrading the Wi-Fi/Bluetooth module but it wouldn't grab the latest drivers so I had to stick to the old Bluetooth that barely reaches across the room.

dwiel commented on Job Corps: free, residential training and education for low-income young adults jobcorps.gov/... · Posted by u/nateb2022

dragonwriter · 2 years ago

Why does it seem odd that assets as well as income would be factored in to conputation of ability to pay?

dwiel · 2 years ago

Its obvious why it is set up this way. That said, it can be hard to see other people who make the same wage, spend it all on fancy cars and a bigger house get more aid when you've been living modestly and saving resulting in less aid.

dwiel commented on Cloud seeding catching on amid Rocky Mountain drought hjnews.com/tremonton/clou... · Posted by u/hhs

ImaCake · 2 years ago

I know this isnt a great counterpoint for doing more geoengineering but; we are already massively terraforming the planet from the micro to the mesoscale. Its caused untold chaos for the biosphere already. In a very real way geoengineering is the only solution. Even reducing emissions is just us toggling in the CO2 knob.

dwiel · 2 years ago

I agree that we are already massively terraforming the planet, and that there is some terraforming we should stop and dinner we should do more of.

dwiel commented on Quitting the rat race seanbarry.dev/posts/quitt... · Posted by u/seanbarry

notch656c · 3 years ago

If you have kids and quit while your family is used to the standard of living there is a good chance a divorce is in the cards.

You will then owe 20% (pretax, 30% post tax) of your "imputed" salary for the kid, as well as possible alimony. If you don't come up with 20% of your generous salary you git tossed in a cage, even if the kid only needs a tiny fraction of that for a decent life. For many it's impossible to step down their career without being tossed into prison, as the judge uses "imputed income" to calculate what you owe based on what you can potentially earn. That is if say you go from engineer to carpenter, you may now owe over 100% of your salary for support.

dwiel · 3 years ago

Or you know, talk to your spouse about it first. I dropped down to $0 income for 2 years with two kids and a wife. My family is as strong as ever.

Obviously just one data point and divorce rates are high. Do you have any data on this specific case: depressed about job, quits job to be happier, results in divorce. It seems quiet possible that given the circumstances, quitting the job might decrease the chance of divorce by helping remove so much stress from work.

dwiel commented on Bayesian statistics and machine learning: How do they differ? statmodeling.stat.columbi... · Posted by u/magoghm

steppi · 3 years ago

Ah yes, got you. It is a false dichotomy because it neglects that there’s such a thing as Bayesian neural networks. Also, taking ensembles of ordinary neural networks with random initializations approximates Bayesian inference in a sense and this is relatively well known I think.

dwiel · 3 years ago

Yeah right, in my experience I haven't needed as many networks in the ensemble as I first assumed. This paper [1] suggests 5-10, but in practice I've found only 3 has often been sufficient.

[1] https://arxiv.org/abs/1811.12188

dwiel commented on Bayesian statistics and machine learning: How do they differ? statmodeling.stat.columbi... · Posted by u/magoghm

steppi · 3 years ago

The variational autoencoder is a Bayesian model. See [0] for instance.

[0] https://jeffreyling.github.io/2018/01/09/vaes-are-bayesian.h...

dwiel · 3 years ago

Right, the claim was that "Neural networks give probability estimates. Bayesian methods give us probability estimates AND uncertainty" which presents a false dichotomy. I think we agree.