The plane was about to take off when I heard a strange sound.

Your mic wasn't off during sound check.

Well, the obvious way to measure the speed of sound is to bounce sound off something and look at the echo.

The sound made flicking a wall switch off is of a completely different nature.

And think about the immense sound of the universe forming.

That doesn't sound like that much when you think about it.

And it's like a funny sound effect that follows you around if you don't turn the thing off.

War, a friend of mine said, is not about sound at all.

PS Don't get off. You don't get off, but don't worry about me.

Woody Norris shows off two of his inventions that treat sound in new ways, and talks about his untraditional approach to inventing and education. As he puts it Almost nothing has been invented yet. So what's next?

Now, after almost 80 years of having sound, I thought it was about time that we figure out a way to put sound where you want to.

The good thing about this is, if the concert doesn't sound good, it's their fault.

Maybe pulling bits off? I'm not asking about that.

I know that it could sound pretty weird to speak about mono when the number of possibilities is so huge, but I push you to consider the option of focusing on just one task, or maybe turning your digital senses totally off.

Playing sound effects both pleasant and awful, Julian Treasure shows how sound affects us in four significant ways. Listen carefully for a shocking fact about noisy open plan offices.

We must not undermine sound, lawful counter terrorism measures with specious arguments about their collateral impact.

Now Bethany was nigh unto Jerusalem, about fifteen furlongs off

Now Bethany was nigh unto Jerusalem, about fifteen furlongs off

Am I really in such a hurry that I'm prepared to fob off my son with a sound byte at the end of the day?

So, how about the people who walk in off the street?

I'm like, Get it off! Don't worry about it, you know.

Because the sound is made in the air along this column, it does not follow the inverse square law, which says it drops off about two thirds every time you double the distance 6dB every time you go from one meter, for instance, to two meters.

It is hard to see how this type of theory either explains today s economic turbulence, or offers sound instruction about how to deal with it. First, in contrast to the dot com boom, it is difficult to identify the technological shock that set off the boom.

That's how you think about security in terms of the trade off.

And obviously each of these letters comes off about roughly equally frequent.

I'm so angry about it. The oil companies are ripping me off.

Change sound volume and sound events

So we started off with about 12 volunteers, and then we had about 50, and then a couple hundred.

The reason that they gave about American bombing wasn't all that far off.

Let's get another disease off the list of terrible things to worry about.

Once it has that information, it finds out more reviews about that, or maybe New York Times has a sound overview on that, so you can actually hear, on a physical book, a review as sound.

Peter Tyack of Woods Hole talks about a hidden wonder of the sea underwater sound. Onstage at Mission Blue, he explains the amazing ways whales use sound and song to communicate across hundreds of miles of ocean.

And that may not sound very intuitive, but let me flip over to something else you know about, and that's computers.

And then, at night, about midnight, they turn the heat off in the hotel.

It went up to about 16,000 posts, and now it has been taken off.

If you close your eyes right now in this room, you're aware of the size of the room from the reverberation and the bouncing of the sound off the surfaces.

Secondly, get in touch with making some sound create sound.

And finally, about 100 years ago, the harnessing of electromagnetic spectrum to send sound and images through the air radio and television.

Sound

I want you to put off your preconceptions, your preconceived fears and thoughts about reptiles.

At the end of that time, I went off to Australia, about 20 years ago.

Anyway, the next slide I'm about to show you Should I just turn that off?

Now, they've tried this a couple years ago and it failed, because the checker gets tired of hearing the same message every 20 minutes, and reaches out, turns off the sound.

So, working with kids, they created images, thinking about what might the images you see sound like if we could listen to them.

Now, I just would like to finish off to tell you the little story about Avelile.