yeah, but what a pain when its cold. When your teeth chatter the CW is a grind!

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On Monday, September 10, 2018, Brian Milburn - K6BPM via SBARC-list sbarc-list@lists.netlojix.com wrote:

We need these!

https://www.defenseone.com/technology/2018/09/military-now-has-tooth-mics-in...

-- Brian - K6BPM _______________________________________________ SBARC-list mailing list SBARC-list@lists.netlojix.com http://lists.netlojix.com/mailman/listinfo/sbarc-list

--On Monday, September 10, 2018 2:42 PM -0700 Brian Milburn - K6BPM via SBARC-list sbarc-list@lists.netlojix.com wrote:

We need these!

https://www.defenseone.com/technology/2018/09/military-now-has-tooth-mics-in...

Pretty cool, but I'd have to challenge the statement that they "are using a new auditory pathway." My father owned a product called a "bone phone" in the late 70's (40 years ago) where a "cordless telephone" was placed in your shirt pocket and a device wired to that telephone was placed behind your ear. That device used bone conduction for the auditory path. He says people could hear him very well, although he had a little difficulty hearing the other party.

This was a $10-$20 "Uniden" type product at that time; it wasn't a $10M funded project and was probably available through the DAK catalog, or some similar outlet. (Sometimes you gotta wonder if people are milking the government to re-do products that have already been proven out and commoditized).

Supposedly, Beethoven "invented" (maybe "discovered" would be more appropriate) bone conduction when he (being almost deaf) found a way to hear music through his jawbone by biting on a rod attached to his piano. That was a lot more than 40 years ago... :-)

Implantable hearing aids use bone conduction....

What will be really cool is when "outgoing sound is sent to a radio transmitter on the neck" instead becomes, "outgoing sound is sent to a radio transmitter IN the neck" and doesn't require the second radio unit - fully disguised. (Kind of like human microchip implants - always wants to do that to open my doors without a key, etc., but I digress).

Check out this YouTube video of another product also called the Bone Phone: https://www.youtube.com/watch?v=De0TxZzqpSg

Here is a bone conduction rabbit hole for you: https://www.youtube.com/watch?v=De0TxZzqpSg http://www.retrothing.com/2006/01/the_bone_fone_r.html http://audiokarma.org/forums/index.php?threads/remember-the-bone-phone.571010/ https://www.reddit.com/r/gadgets/comments/lxpyc/what_ever_happened_to_the_bone_fone_did_the/

Here is one that talks about the military using this technology a long time ago: https://www.everydayhearing.com/hearing-technology/articles/bone-conduction-headphones/

I used to be very into all things audio (from an engineering standpoint), so this was one topic that was of great interest to me back in "the day"...

Ken