I'm going to play you two clips of Usher, one which is normal and one which has almost no high frequencies, almost no low frequencies and not even that many mid frequencies.

You only hear the low frequencies.

In this case, the frequency is lower.

This is a video prototype.

I want you to watch another excerpt from the film.

Play video one.

39. In the low data rate mode, data can be transmitted directly to ground stations using X band frequency.

Allow dropping frames for better audio and video synchronization

Personnel compartment noise that's not too bad it's very low frequencies, it's basically like these subwoofers.

This is a plot of frequency against time sort of like musical notation, where the higher notes are up higher and the lower notes are lower, and time goes this way.

Value of the cutoff frequency for the lowpass filter

That will then become a reward for the lower frequency behavior.

We have a video to show you.

Let's take a look at a quick video snippet.

These are all very low budget videos, like quick prototypes.

So I'd like to play this video.

And so in this video here this is a video taken from David DeSteno's lab at Northeastern University.

The Celestri LEO system was designed to enable frequency sharing of the Ka band spectrum with GSO and other LEO systems by using satellite diversity.

To reduce intensity and frequency of caries among children and youth

The green and red bars show that same signal displayed by frequency, with lower frequencies here and higher frequencies up here.

So we're going to start that video.

Here's a key passage where he basically describes the staircase.

That spectral region was one of particular importance to radio astronomy since there were many interstellar line emissions.

I'd just like to show a clip from a most recent project.

If we could play these two sound clips in succession.

They cannot differentiate sound quality differences between those two clips.

CA So, what was the impact of that?

And I'll let her take it from there.

The video itself is longer, but here's a short clip.

Maybe one day you will watch this on the Internet.

This is this is intense material, I should warn you.

And we have a little video that describes the sequence.

The ocean has properties that allow low frequency sound to basically move globally.

In the low frequencies, this line indicates sound that comes from seismic activity of the earth.

Another mobile communication project, Teledesic, was looking for an allocation of frequency in the very high frequency range in the 19 to 29 GHz band, hitherto an unallocated millimetre wavelength.

They had released a video of the shooting on Friday, asking for help identifying a man seen in the footage.

So I'm going to show you another film.

I'll just take you to Bangladesh for a minute.

CA And releasing this caused widespread outrage.

And I asked my audience, I said, Listen to this piece of audio.

Now I'm going to close with a video that is kind of unusual.

There is a picture of Charles. So let's watch the next clip.

There were no longer any restrictions on the use of the L band frequency.

And I want to show you a short video clip that illustrates the first two components of this work.

1. Members shall endeavour to limit the number of frequencies and the spectrum used to the minimum essential to provide in a satisfactory manner the necessary services.