Stub Mandrel Posted August 10, 2019 Share Posted August 10, 2019 (edited) Here's a simple experiment. Unplug your bass and pluck the a-string. Not very loud is it. Now press the headstock against the bony part of your head or even a tooth and pluck the a-string. That's at least four times louder, plenty more than 20db of attenuation. Bone conduction is very inefficient - as you might expect, otherwise we wouldn't need outer and middle ears... (Also... as you can use bone conduction to pick up sound from anywhere on your head, including your jaw, I don't see how ear defenders are going to stop it - you need your entire head in a sonically isolated bubble... ear defenders work by sealing better and attenuating more than earplugs, bone conduction has little to do with it.) Edited August 10, 2019 by Stub Mandrel 2 Quote Link to comment Share on other sites More sharing options...
DoubleOhStephan Posted August 10, 2019 Share Posted August 10, 2019 5 minutes ago, Stub Mandrel said: including your jaw I often play acoustically with my chin on the top horn to help boost the sound. 1 Quote Link to comment Share on other sites More sharing options...
stingrayPete1977 Posted August 10, 2019 Share Posted August 10, 2019 5 hours ago, Stub Mandrel said: Here's a simple experiment. Unplug your bass and pluck the a-string. Not very loud is it. Now press the headstock against the bony part of your head or even a tooth and pluck the a-string. That's at least four times louder, plenty more than 20db of attenuation. Bone conduction is very inefficient - as you might expect, otherwise we wouldn't need outer and middle ears... (Also... as you can use bone conduction to pick up sound from anywhere on your head, including your jaw, I don't see how ear defenders are going to stop it - you need your entire head in a sonically isolated bubble... ear defenders work by sealing better and attenuating more than earplugs, bone conduction has little to do with it.) I actually find ear defenders worse for bone conduction, the volume required to pass via bone conduction in free air would be immense anyway so unless you rest your head on the PA speakers during gigs I don't think any of this matters. Quote Link to comment Share on other sites More sharing options...
Bolo Posted August 10, 2019 Share Posted August 10, 2019 (edited) 1 hour ago, stingrayPete1977 said: the volume required to pass via bone conduction in free air Is 40dB SPL - 60dB SPL generally. Edited August 10, 2019 by Bolo Quote Link to comment Share on other sites More sharing options...
ezbass Posted August 10, 2019 Share Posted August 10, 2019 I go away for 5 minutes and this thread gets back on topic. What is BC coming too? 😉 1 Quote Link to comment Share on other sites More sharing options...
skankdelvar Posted August 12, 2019 Share Posted August 12, 2019 1 hour ago, hiram.k.hackenbacker said: WHAT?? I get to page 8 of 11 and then find out I've been reading the abridged version!! I demand a refund 😂 It's OK, you didn't miss much, just some diagrams of the inner ear and some 'before and after' shots of an ear drum after a Motorhead gig. As a result a couple of people got triggered by the eardrum pix and went to the BC Safe Room and couldn't get in because @ped had the key and he was off down at Greggs getting a steak bake and all hell broke loose, these two crying and weeping anyway luckily @Richtipped up and he's got the knack for opening the door without a key and he opened the safe room door and there was no space to get in because someone had put the old photocopier in there. So basically the usual thing happened and some posts got removed. 2 2 Quote Link to comment Share on other sites More sharing options...
Skinnyman Posted August 12, 2019 Share Posted August 12, 2019 9 minutes ago, skankdelvar said: It's OK, you didn't miss much, just some diagrams of the inner ear and some 'before and after' shots of an ear drum after a Motorhead gig. As a result a couple of people got triggered by the eardrum pix and went to the BC Safe Room and couldn't get in because @ped had the key and he was off down at Greggs getting a steak bake and all hell broke loose, these two crying and weeping anyway luckily @Richtipped up and he's got the knack for opening the door without a key and he opened the safe room door and there was no space to get in because someone had put the old photocopier in there. So basically the usual thing happened and some posts got removed. Hmmm, steak bake. I could just go a steak bake. Why isn’t there a 24 hour Greggs? They’d make a fortune round here. Mostly from me. Hmmmm. Steak bake....... 1 Quote Link to comment Share on other sites More sharing options...
Ricky 4000 Posted August 12, 2019 Share Posted August 12, 2019 https://www.derbytelegraph.co.uk/burton/greggs-drive-thru-opening-ashby-1638705 Quote Link to comment Share on other sites More sharing options...
Ricky 4000 Posted August 12, 2019 Share Posted August 12, 2019 28 minutes ago, hiram.k.hackenbacker said: Er, what’s a steak bake? Its like the Special Brew of pasties. 👍 1 1 1 Quote Link to comment Share on other sites More sharing options...
Unknown_User Posted August 12, 2019 Share Posted August 12, 2019 On 10/08/2019 at 14:25, DoubleOhStephan said: I often play acoustically with my chin on the top horn to help boost the sound. Me too! With my mouth wide open to act as a speaker. If I want a wah-wah effect I just wiggle my lips back and forth. 1 Quote Link to comment Share on other sites More sharing options...
Unknown_User Posted August 12, 2019 Share Posted August 12, 2019 4 hours ago, Ricky 4000 said: Its like the Special Brew of pasties. 👍 Who was it who used to play slide guitar with a can of Special Brew? I doubt you'd get the same timbre with a steak bake! 1 Quote Link to comment Share on other sites More sharing options...
TimR Posted August 12, 2019 Share Posted August 12, 2019 5 hours ago, hiram.k.hackenbacker said: Er, what’s a steak bake? It’s a meat based version of the McDonalds apple pie. Cool and crumbly to the touch but with insides “hotter than the sun” giving the same effect as biting into liquid lava. 3 Quote Link to comment Share on other sites More sharing options...
Skinnyman Posted August 12, 2019 Share Posted August 12, 2019 49 minutes ago, TimR said: meat In the broadest possible sense.... 1 Quote Link to comment Share on other sites More sharing options...
Stub Mandrel Posted August 18, 2019 Share Posted August 18, 2019 Sort of relevant to the thread title... I use all sorts of earplugs in my workshop, as well as ear protectors, they just plug my ears and reduce the noise. I bought some mid-price musician type ones off eBay. They are clear silicone with a black insert that has a filter inside it. They don't cut the volume as much compared to normal ones but do give a more natural sound. They are sold as 20 dB but looking around 12dB seems to be typical and roughly halving thr loudness seems about right. Similar to the ones on the right here. Are these likely to be of any benefit or am I better off sticking with my 'workshop grade' ones. Quote Link to comment Share on other sites More sharing options...
Telebass Posted August 18, 2019 Share Posted August 18, 2019 On 04/08/2019 at 20:41, Billy Apple said: No. A consultant in a well known London hospital. Who is working with the construction industry to help with long term hearing loss of construction workers. Also works with classical orchestra musicians. Well, he's the only audiologist/ENT consultant I've heard of who's saying that. It's the exact reverse of everything I've ever been taught about it (as a punter, that is). Quote Link to comment Share on other sites More sharing options...
gjones Posted November 24, 2019 Share Posted November 24, 2019 (edited) Occlusion – the booming effect we hear when our ears are blocked, caused by sound (particularly lower frequencies) being transmitted through the bones of the head to the ear canal. This is particularly a problem for singers and those instrumentalists whose instruments are in contact with their head, e.g. brass and woodwind, higher strings. The effect can be reduced by wearing earplugs deeper in the ear canal, or by using vented earplugs. From this website: https://www.hearformusicians.org.uk/hearing-protection Edited November 24, 2019 by gjones Quote Link to comment Share on other sites More sharing options...
T-Bay Posted November 24, 2019 Share Posted November 24, 2019 On 04/08/2019 at 20:24, mikel said: Dont care who he is or what his qualifications are, but he is wrong. I have used quality ear plugs for years and they have made a huge difference. Over ear defenders are good for industrial noise but hopeless for gigs where you need to hear the music, but quieter. I have a very expensive set of Peltor active ear defenders as one of my other hobbies is target shooting and I am a qualified range conducting officer for our club so I need to be able to hear very well while not suffering the ‘crack’ on discharge (cue the carry on jokes). I have worn them at a practice, partly as a mickey take and partly in the hope that the lead guitarist would get the hint and they are brilliant. I imagine it's that sort the doctor is thinking of and is looking for maximum protection as would be their ideal (but forgetting practicality). Would I wear them at a gig? Would I stuff, you would look an utter pillock. I am more than happy with the job my moulded plugs are doing. If anyone is interested you can get a good idea of sound transference through the bone by gently touching a tuning fork behind the ear. It’s quite a weird experience at first. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.