How do speakers work? Incredibly small, yet impressively loud

Speakers weigh less than a dime but can be heard throughout a massive room. How do they make such intricate sounds while being so small? This fundamental lesson gets into the components of a smartphone's speaker as well as their function.
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Made by: Teddy Tablante
Table of Contents:
00:14 Section 1: Intro & Component Exploded Diagram
01:40 Section 2: Diaphragm
02:20 Section 3: Voice Coil
02:38 Section 4: Magnet
03:43 Section 5: Spider
04:25 Section 6: Summary
Visit our website: www.branch.education
Notes:
This is the second episode of Branch Education. Please provide comments, questions, and your thoughts.
Erratum:
None
Animation built using Blender 2.79b www.blender.org/
Post with Adobe Premiere Pro and Adobe After Effects
Sound editing with Reaper
Work Cited:
Wikipedia contributors. "Loudspeaker." , "Sound." Wikipedia, The Free Encyclopedia. Wikipedia, The Free Encyclopedia, June 20th, 2018
Music Attribution in Order:
Marxist Arrow by Twin Musicom is licensed under a Creative Commons Attribution License www.youtube.com/watch?v=rBlLC...
Plaidness by Francis Preve
• Plaidness - Francis Pr...
Timelapsed Tides, Asher Fulero
www.youtube.com/watch?v=1LipR...
Sunburst, Tobu & Itro is licensed under Creative Commons Attribution License www.7obu.com www.youtube.com/watch?v=4lXBH...
#HowDo #Speaker #Smartphone

[@gibbethoskins8621]

What amazes me is how people figured out which amount of current produces which sound... The fact that that little piece of material moving back and forth can create such intricate sounds is mind blowing

[@vandermonke4178]

woah i was literally wondering on what factor did the current changing depend on as i was watching this. truly fascinating

[@rylanthompson5844]

Analog technology, physics does there figuring out.

[@DoomFinger511]

They didn't have to. A microphone is the exact opposite of a speaker. It has a thin metal plate that vibrates when sound hits it. That plate then moves an electromagnetic field to make pulses of electrical current. The current is sent to a speaker (which as the video showed) vibrates at the same frequency producing sound. The only difference is the speaker is electrically amplified to make the sound loud enough to hear.

[@Leanzazzy]

Exactly. It also sounds far less marvellous when you realise that sound is literally just a longitudinal wave made by an object vibrating. Electromagnetic induction had also been known for quite a while, so it was only a matter of time before someone linked them together.

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It truly seems unreal!

[@workhardt2]

Very impressive. the phone speakers are so small yet quite clear. Human engineering just amazes me.

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[@astronaut6418]

Here's a question: How does a speaker generate 2 sound simultaneously

[@BranchEducation]

You should check out the followup video that goes into what is sound? : kzbin.info/www/bejne/aGXcdoaja5inibs

[@marios9992]

It is one sound. Two sounds fused together in one.

[@dusscode]

Radu Burcea with multiple audio channels, like stereo. Some smartphones use the earpiece speaker with the loudspeaker to make two sounds at once, which is stereo.

[@osiandelzongle6738]

@@dusscode YOU ARE WRONG. PHONE SPEAKERS ARE ALWAYS AND ONLY IN MONO. Have a nice day!

[@anonnona6940]

The frequencies must be combining to come out together as a combined wave(two frequencies can merge in interesting ways) , both having low amplitude or "volume" per say, individually.

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Amazing explanation....thank you 😊

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[@BranchEducation]

Thanks for the input! Most of my videos are clocking in at 10 min. This speaker one just happened to be a bit shorter.

[@hammadkhan4876]

Your voice is also coming from the speakers of my phone

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So what is the miracle?

[@omsingharjit]

Same question 🤔

[@HDestroyer787]

Speakerception

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Tws

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[@danielg2]

Good niche on the micro speakers, great animations, I understood your explanations thanks.

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*Magnetic Field Looks Satisfying.* *Thanks a lot.*

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[@nvrt7209]

I always wondered how speakers worked since I was young. It always blew my mind how our phones can transfer exactly what our voices sound like. Like what tiny instrument inside this small phone can possibly mimic my voice so perfectly? Thankyou for these videos.

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