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This is a university press release, so they first refer to a registered trademark, which I assume means they're trying to make money off it through licensing ag
by jawns 1y ago
This is a university press release, so they first refer to a registered trademark, which I assume means they're trying to make money off it through licensing agreements:
> a unique sound called 'sound spice®'
Only at the very bottom of the release do they actually give any technical details:
> a pure tone at 100 Hz
The linked study gives more details:
> 1-min exposure to a pure tone of 80–85 dBZ (= 60.9–65.9 dBA) at 100 Hz
- akdor1154 1y agoYeah, nice. Easy enough to self-test, Android signal generator apps are readily available. I wonder if the optimal tone varies with body shape/size?
- diggan 1y agoKind of feel like it'll be hard to replicate the volume accurately, even when assuming headphones. The maximum output would depend both on the phone itself and the headphones. Wonder how specific it would have to be, if you'll get the same results with different volumes.
- behringer 1y agoShould be real easy with a cheap sound meter off of Ali express.
- K0balt 1y agoUnless you live in the USA, in which case that sound meter now costs X+$100 if it gets here before June, x+$200 if it gets here in june or later lol. But that’s fine, you can get an American made one for about ….hmm. Can’t seem to find one actually made in the USA that doesn’t say “contact us for a quote” or something like that. I’m all for repatriating manufacturing, and a good plan might very well involve tariffs rolled in progressively over several years, giving businesses a predictable time table to shift supply chains and invest in manufacturing capacity to fill those gaps. But all that has happened is the price of American innovation just went through the roof for small companies and startups, while big businesses will barely be affected because the cost of gadgets and parts is negligible as a fraction of their R&D budget. For many startups it’s nearly 100 percent. Chaos is not good for business and multiplies risks at their root, which gets magnified by orders of magnitude in financial terms when looking at investment and finance. 100:1 bets with 1000:1 odds just becomes 100:1 bets with 100:1 odds, a bet no longer worth taking. Sad.
- zoklet-enjoyer 1y agoThere are free phone apps for that
- K0balt 1y agoYes, wildly inaccurate ones in most cases. The Apple Watch has a comparatively well calibrated sound pressure meter though. (Made in China, obviously)
- madhacker 1y agoLet the MAGA fanatics eat cake and bittermelon. Decision has consequences.
- Mistletoe 1y agoYou can get a fine spl meter on Amazon or get my favorite which is the old Radio Shack one with a needle meter on eBay. Probably about $20-25.
- nandomrumber 1y ago> 60.9–65.9 dBA That's about the level of normal human speech.
- jerf 1y agoIf this works at all I seriously doubt it only works within a .2 dB range or something. Just because a study tested only one particular point in a space does not mean only that point has whatever properties they found in the study.
- diggan 1y agoWell, I was thinking more it's really hard for any layperson so reach a specific level of dBA, especially for single-frequency tones where the perceived loudness is usually different from the actual loudness. So even if you say "This 100 Hz tone should be played for 2 minutes at 61 dBA, which is regular human speech levels", being able to actually get close to 61 dBA for a 100 Hz tone in real life, for an untrained ear, sounds pretty difficult.
- nandomrumber 1y agoMany people could probably hum a 100hz tone.
- shinycode 1y agoHow would I know if I did it right ?
- danaris 1y agoJust have perfect pitch! That should be no problem, right? .....right??
- danparsonson 1y agoYour motion sickness would feel better
- CoastalCoder 1y agoWhy bother with a psychoacoustic measure like dBA or dBZ for a pure sine wave?
- lamename 1y agoProbably because dB SPL doesn't match A-weighted human perceptual audiogram, so they're being specific? (I get that you could just translate it to dB SPL but still.)
- DidYaWipe 1y agoWhere does it say it's a sine wave, though? I was looking for a description of the waveform, and found none.
- CoastalCoder 1y agoThe article refers to a pure tone at 100 Hz. I took that to mean a simple sine wave. If it wasn't a sine wave, it would have additional, non-100 Hz components.
- DidYaWipe 1y agoThanks. I pretty much assumed sine wave too, but it's never stated. The idea that that's "unique" is laughable.