0:00:02 > 0:00:04LAUGHTER
0:00:04 > 0:00:08Over one million views, he's an internet sensation.
0:00:08 > 0:00:10PROFESSOR SCREAMS
0:00:10 > 0:00:13THEY LAUGH
0:00:13 > 0:00:16Oh, oh, where is McCork?
0:00:16 > 0:00:18He usually bursts in doing something crazy by now.
0:00:20 > 0:00:23Good morning, Colin. Good morning, Dr Knowles.
0:00:23 > 0:00:26I take it you've seen the video then, Professor?
0:00:26 > 0:00:29Yes, I've seen the video and I am not impressed.
0:00:29 > 0:00:31It's only a bit of fun, Professor.
0:00:31 > 0:00:33Well, I don't find it one bit funny
0:00:33 > 0:00:37and I'd like to assure that my days of acting the fool are over.
0:00:37 > 0:00:42- But, McCork!- We're live in five, four, three...
0:00:42 > 0:00:45This is Brain Freeze!
0:00:45 > 0:00:47With Dr Knowles,
0:00:47 > 0:00:50Professor McCork
0:00:50 > 0:00:51and...
0:00:51 > 0:00:53Colin the floor manager.
0:00:55 > 0:00:57Stand by!
0:01:04 > 0:01:07Hello, everyone, you're very welcome to Brain Freeze.
0:01:07 > 0:01:08And it's time for...
0:01:08 > 0:01:11Today's Big Question!
0:01:11 > 0:01:14Today we're asking why does my voice sound different recorded?
0:01:14 > 0:01:17- First we need to look at how we hear...- Hang on, Doctor.
0:01:17 > 0:01:19If you don't mind, I'll take this one.
0:01:19 > 0:01:21OK, off you go.
0:01:21 > 0:01:24When we speak or sing, our vocal cords vibrate.
0:01:24 > 0:01:26La-la-la-la!
0:01:26 > 0:01:29This vibration creates invisible sound waves which travel out
0:01:29 > 0:01:33in all directions before returning and entering the ear canal.
0:01:33 > 0:01:36The signal is then boosted or amplified in the middle ear
0:01:36 > 0:01:39before reaching the inner ear, where it's converted to nerve
0:01:39 > 0:01:42impulses that the brain perceives as sound.
0:01:45 > 0:01:47Over to you, Dr Knowles.
0:01:47 > 0:01:49Er, Dr Knowles?
0:01:49 > 0:01:53- We happen to be live. Hello? - Yes, sorry.
0:01:53 > 0:01:56Erm, let's take a quick break.
0:01:57 > 0:01:59And we're clear!
0:01:59 > 0:02:01Now, Dr Knowles, I really need you to focus on the
0:02:01 > 0:02:04second half of the show, OK? The lights will come up...
0:02:04 > 0:02:07Yes, boss, ratings are down. I understand.
0:02:07 > 0:02:10Viewers want the silly McCork back.
0:02:10 > 0:02:11Yes, boss.
0:02:11 > 0:02:13Oh, crumpets!
0:02:13 > 0:02:17I never thought I'd say this but I wish we had the old McCork back.
0:02:17 > 0:02:21Honestly, I don't know how I work with these people.
0:02:21 > 0:02:24- BELL RINGS - Places, everyone! We're going live!
0:02:25 > 0:02:29We've seen how the sound of our voice enters our ears through the air,
0:02:29 > 0:02:34but we also experience it in another way, through our bones.
0:02:34 > 0:02:37When we speak or sing, sound also travels from the vocal cords,
0:02:37 > 0:02:40directly to the inner ear through the bones in our head.
0:02:40 > 0:02:43La-la-la-la!
0:02:43 > 0:02:45You can hear what this sounds like by blocking your ears
0:02:45 > 0:02:47and speaking at the same time.
0:02:47 > 0:02:49Wa-wa-wa-wa!
0:02:49 > 0:02:51Because the sound is travelling through bones,
0:02:51 > 0:02:56the low bass frequencies are enhanced and it sounds muffled.
0:02:56 > 0:03:00La-la-la-la! La-la-la-la-la!
0:03:00 > 0:03:01SHE GIGGLES
0:03:01 > 0:03:03- Are you all right, there, Professor?- Eh-hem.
0:03:03 > 0:03:06I beg your pardon. Where were we?
0:03:06 > 0:03:07Is it time for the answer yet?
0:03:07 > 0:03:10Today's Big Answer!
0:03:10 > 0:03:13So you're used to hearing your voice from a combination of both
0:03:13 > 0:03:16external and internal sources but when you hear your voice
0:03:16 > 0:03:19recorded and played back, the internal sound is missing.
0:03:19 > 0:03:22And that's why you perceive it as sounding different.
0:03:22 > 0:03:25- That's all for today, folks.- Goodbye.
0:03:27 > 0:03:30- Working with amateurs, honestly. - Quick, Dr Knowles!
0:03:30 > 0:03:33- I think our problems are over!- What?
0:03:33 > 0:03:36THEY LAUGH
0:03:36 > 0:03:39- Oh, the boss is going to love this. - What's so funny?
0:03:39 > 0:03:41What are you laughing at?
0:03:41 > 0:03:43HE CHUCKLES
0:03:43 > 0:03:45Actually, it is kind of funny.
0:03:46 > 0:03:49La-la-la-la!
0:03:49 > 0:03:52Well, as the old saying goes, if it ain't broke don't fix...
0:03:52 > 0:03:54Agh!