And that is how stethoscope and auscultation was born.

But although these hearing aids were the most powerful hearing aids on the market at the time, they weren't very helpful.

Later he renamed it the stethoscope.

And it was followed a year or two later by Laennec discovering the stethoscope.

You take dentistry, hearing aid, maternity and so on.

Not long after, I was fitted with hearing aids.

So this particular device is called the Gut Listener.

When you hear clicks, we're turning the machine on.

Does anybody know when the stethoscope was invented?

So even my stethoscope is now digital.

It sounds like an infection at best. Maybe a medical instrument.

Today, you hear these infernal machines going night and day.

So the handheld ultrasound is basically surpassing and supplanting the stethoscope.

Professional hearing protectors are great I use some all the time.

Because even through the squeaks of his hearing aids, his understanding of music was profound.

The meeting, among other things, will hear of strides made in our region in preventing and punishing illicit trafficking in small arms and light weapons.

And we were very excited about this because, of course, they have a history of dancing with machines.

Maybe 100,000 people have Cochlear implants, which allow them to hear.

Now, in the West we rely on highly trained technicians to fit these hearing aids.

The instruments are loud enough that they can be heard without amplification, etc., etc.

So as I go through this talk, I want you to imagine this gigantic machine. We heard those wonderful sounds of what this thing would have sounded like.

And as you bring these trends together, and as you think of what it means to take people who are profoundly deaf, who can now begin to hear I mean, remember the evolution of hearing aids, right?

And what I can say is, in 2016, doctors aren't going to be walking around with stethoscopes.

It gets a little bit boring, and so pretty soon I go through other instruments, they become familiar, and eventually I find myself designing and constructing my own instrument, and I brought one with me today, and I thought I would play a little bit on it for you so you can hear what it sounds like.

And for the first, I don't know, three to five years of their life, mountain bikes were known as clunkers.

And the feeling that no one is listening to me make us want to spend time with machines that seem to care about us.

And after the war was over, there was an audit done as the army always does, the air force always does and they asked the question how many Scuds did we actually destroy?

People could now hear music all the time, even though it wasn't necessary for them to play an instrument, read music or even go to concerts.

We believe that as long as nuclear weapons exist and are stockpiled by some nations for their narrow security interests, exhortations about non proliferation will continue to ring hollow.

Conversion Sound has developed a high quality, ultra low cost digital hearing aid for the developing world.

For our auction we have some wonderful paintings for you, for a very good cause, the money you give us will be used to buy hearing aids.

And they take these little kids and they run them through these things till they teach them how to say, Sir, yes, sir, and things like grenade toss and weapons care and maintenance.

One of the interesting things, of course, is the combination of that raw hand on the instrument and technology, and of course what he said about listening to our young people.

I m interested.

That's a real uncomfortable feeling, when all the equipment's come out and a whole Sony team, and people are going to be sitting there in the audience.

We have been so consumed with seemingly objective discussions of politics, tactics, weapons, dollars and casualties.

We want to hear it.

Now, that sounds silly, but each of these devices has something interesting in it that maybe you could use.

Don't listen, don't listen!

Listen and listen carefully.

But what I want to get to, the next frontier, very quickly, and why the stethoscope is on its way out, is because we can transcend listening to the valve sounds, and the breath sounds, because now, introduced by G.E. is a handheld ultra sound.

First thing for my wife, and the most common thing I hear from my patients, particularly in the 40 to 80 year old age group, 70 year old age group, is they come in and say, Hey, Doc, isn't there just a shock absorber you can put in my knee?

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It had deep underwater microphones, or hydrophones, cabled to shore, all wired back to a central place that could listen to sounds over the whole North Atlantic.

I would percuss the chest. I would listen to the heart.