I sometimes like to use earplugs, but I always end up just listening to my blood loudly pulsing around in my head. This is not ideal. Does anyone have recommendations for earplugs that actually make things quiet, instead of just replacing ambient noise with the noise of my heartbeat? [more inside]
Help me understand the difference between 28dB, 38dB and 48dB. I'm thinking about buying a fridge, and the fridges I'm considering have noise levels ranging from 28dB to 47dB (according to the latest fridge assessment in Choice). Fridges with a 28dB noise level rating are too expensive for me, though, so I'm trying to find something I can afford but which won't annoy me too much (I'm sensitive to the noise of a buzzing fridge). What I can afford tends to be somewhere in the mid-30s dB range. But it's no use going into a noisy showroom and trying to properly gauge how a fridge will sound in my quiet home. So I'm wondering if there's a way I can test these different noise levels at home before I buy, to see what's the difference.
In the next two weeks, there will be a new addition to our household -- a baby. (Not mine.) And since it's not mine, I would prefer not to hear it. There are lots of AskMes about earplugs, but many (like the ETY ones) use as a selling point that they don't muffle speech. I want to muffle everything. Best ear protection for the job, <$30?
Hospice and palliative-care providers often tell patients' families and friends that as people die, hearing is the last sense to go. Is there any science behind the claim? [more inside]
Why do in-ear headphones sound much louder when I put the left-labelled one in my right ear and the right-labelled one in my left ear? [more inside]
I am having a bizarre tinnitus (ear ringing) issue. Please help give me ideas on how to solve it. [more inside]
If sound were to travel closer to, say, the speed of light than the speed of sound, would we still be able to determine its horizontal direction? [more inside]
I'm going to be teaching about sound and hearing to some 12/13 year-olds next week and I'd like to show them how it's impossible to talk if your speech is relayed to your ears (by headphones) half a second or so late. How can I implement this in software? [more inside]
Can my desk fan damage my hearing? [more inside]