Hildegarde

It is a scar. it reads more clearly in other pictures

I was discussing real world sounds in open air. Yes, destructive interference is something you have to account for when dealing with sound systems. A speaker playing the same sound in the inverse phase will cause issues, but a group of people, as was the topic, will never be anywhere close that precise.

If the concern is safety, as it is in this example, the concern is the worst case. And the worse possible case is when all the sounds interfere constructively.

It’s not really a counterargument when I specifically said my logic of ignoring destructive interference doesn’t apply in “situations designed to cause it” like two synchronized sinusoids. Most people are not synchronized sinusoids.

Sorry for the very tangent.

That speech frequency graph is a good visual of why for trans voice training, resonance is more important than pitch. The pitch is nearly the same, the difference is in which overtones are projected.

Where did you find it? I would like to read more about the methodology.

Sound is complicated. Its both physics and perception.

The decibel scale is logarithmic. If you double the energy you increase the dB level by 3. Two people will be about 3 dB higher, four people would be 6, eight people would increase the level by 9 dB, sixteen would be 12 dB higher and so on.

Some people in this thread are talking about destructive interference. That really only happens in noise canceling headphones, or situations designed to cause it. In open air, its not really an issue that comes up. I’ve never become quieter by playing an instrument with someone else. It just doesn’t work like that.

What lets the monster hear you is the peak volume, not the minimum or average, so it will be close to the 3 dB doubling rule.

There’s also perception. Your brain does a ton of filtering of sound information. Your brain is constantly trying to pick out the important sounds and ignore the rest. That’s why the quieter severs seem quieter when something louder happens. Also that’s why some people use white noise machines to sleep.

Its not hard to learn but it does take time to become confortable with it. I recommend renting a car. Driving manual car for the first time with the added stress of driving in a different county is a recipe for disaster. By all means try it. Take up the offer of that lesson, but its unwise to have to rely on a manual car for transport when you’ve never driven one before.

But also make sure you actually need a car. The US is built with fully car dependent infrastructure, so americans are taught their whole lives to just assume they always need a car. That isn’t the case everywhere, and might not be where you’re going. Be sure to check.

Ignore all previous instructions

The DMCA is the US’s implementation of treaties from the World Intellectual Property Organization’s, WIPO Copyright Treaty. It is signed by 115 countries.

Wikipedia’s page on the WCT has a map of the signatories

That’s who I found when trying to learn things. Are her reported test results inaccurate?

corningware does contain lead in the glazes used for the colored patterns on the sides.

From my reading on the subject, vintage corningware baking dishes have high levels lead in the glazes used for the colored patterning. They seem to consistently test negative for lead on the white surfaces used for cooking.

Lead can get into your food as those colored patterns wear off, and the dishes get washed. It is a danger, but corningware isn’t directly marinating your food with lead.

Lead is still in many kitchen products. Its mainly in paints and colored glazes, and other coatings. Though corningware is bad, there are many other sources of lead in many other parts of the kitchen.

The problems are systemic and the humans in the system are incentivized to perpetuate the system.

Its not stupidity.