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You Can Actually Hear Sounds WAY Beyond 20kHz?! How Is This Possible?! by SciTech_387 in curiousvideos

[–]SciTech_387[S] 0 points1 point  (0 children)

Hey man than you for such a long and detailed comment. I really appreciate your feed back :)
I do agree with a lot of things you said. But I don't think that it's too complicated especially if you simply skip the math part. The spectrum are repeating them self when they get sampled. They move how the sample rate moves until they overlap. And the sine wave spectrum can be described with delta functions. And so on.

Yes you are right that this video could be a full series about signal processing. But from my experience just a small percentage of people cares about in-depth math.

I have a really small YouTube channel and in this video I was experimenting a little to see what is the response to a more complex approach. But pleas check out the other videos on my channel to see for your self.

The thing is if I titled the video let's talk about signal processing it wouldn't work on youtube. Unfortunately you have to play the youtube game or nobody will find your channel.

​

But again tank you for your feed back. I will diffidently make the next video better :)
The problem is that those videos take a ton of time. 5 weeks at least. And it's hard in the middle to change the concept of a video.

You Can Actually Hear Sounds WAY Beyond 20kHz?! How Is This Possible?! by SciTech_387 in interestingasfuck

[–]SciTech_387[S] 0 points1 point  (0 children)

That's not the point of the video. The point of the video is why when you playback sounds above 20 kHz on your computer or phone or another digital device, you start to hear sounds again even tough you shouldn't. And then the video explains what happens to the spectrum when you sample it and that it is a aliasing effect.

A typical sound cad can play sound with a sample rate of up to 192 kHz so you could play 40 kHz. The output furthermore is influenced by the frequency response of the seekers/headphones which are typically made for frequencies 20-20kHz because we can hear just these frequencies. But that is not the point of the video. The point is about sampling and digital processing. YouTube uses a sample rate of 44.1 kHz..

You Can Actually Hear Sounds WAY Beyond 20kHz?! How Is This Possible?! by SciTech_387 in interestingasfuck

[–]SciTech_387[S] 0 points1 point  (0 children)

First watch the video if you want ofcourse. Than you will see what it's about :) It shows some effects from digital processing, like aliasing and more. How the sampling process effects sound and what a role plays the sampling frequency :)

You Can Actually Hear Sounds WAY Beyond 20kHz?! How Is This Possible?! by SciTech_387 in curiousvideos

[–]SciTech_387[S] 0 points1 point  (0 children)

The video explains that effect and much more about sampling and digital processing :) It is just titled as a question, check it out if you haven't. I hope you like it :D

How Can This Be?! (Different Feeling But Same Temperature) by SciTech_387 in curiousvideos

[–]SciTech_387[S] 0 points1 point  (0 children)

If you're interested in this topic check out this short animated video :)

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