This video answers your question. It is a bit lengthy but well worth a watch.
This is such a great channel. I discovered it a few weeks ago and can't get enough of it. I highly recommend checking out a few of his other videos.
He's the shit.
"Have you ever wondered why [thing] is the way it is?"
NOPE NEVER! But I'm all ears, let's hear it!
THROUGH THE MAGIC OF BUYING TWO OF THEM
He is the shit. Similar vibe and quality with Techmoan.
"Have you ever heard of or cared about how this niche and now probably obsolete audio or video format or product worked?"
No, I didn't even know it existed. But I am now deeply emotionally invested in him getting that obsolete junk electronic toy working!
"Do you have any feelings whatsoever about the way automobile taillights work in the US?"
"No, why would I?."
"After you watch this video, you're going to write your congressman."
Dude has so many rants on it too. He just released another one yesterday I think (reverse alarms).
It is a bit lengthy but well worth a watch
This was how I knew it was a Technology Connections video before I clicked haha. His stuff is always so informative and interesting.
Love this channel.
There's been multiple related methods, and now newer digital methods, but the short answer is for analog sound the waveforms were printed on a strip alongside the images. A light shining through that hits a photo sensitive diode, the intensity of the light will vary with the waveform. The diode changes the light signal back into an electronic signal, that varies the same as the audio waveform printed on the film, which then goes to the speakers and is turned into sound.
https://m.youtube.com/watch?v=tg--L9TKL0I
That's a great video if you want to go on a deep dive.
Here's a closeup picture of analog sound on a film strip which may help you visualize too.
!nostupidquestions is a community dedicated to being helpful and answering each others' questions on various topics.
The rules for posting and commenting, besides the rules defined here for lemmy.world, are as follows:
Rule 1- All posts must be legitimate questions. All post titles must include a question.
All posts must be legitimate questions, and all post titles must include a question. Questions that are joke or trolling questions, memes, song lyrics as title, etc. are not allowed here. See Rule 6 for all exceptions.
Rule 2- Your question subject cannot be illegal or NSFW material.
Your question subject cannot be illegal or NSFW material. You will be warned first, banned second.
Rule 3- Do not seek mental, medical and professional help here.
Do not seek mental, medical and professional help here. Breaking this rule will not get you or your post removed, but it will put you at risk, and possibly in danger.
Rule 4- No self promotion or upvote-farming of any kind.
That's it.
Rule 5- No baiting or sealioning or promoting an agenda.
Questions which, instead of being of an innocuous nature, are specifically intended (based on reports and in the opinion of our crack moderation team) to bait users into ideological wars on charged political topics will be removed and the authors warned - or banned - depending on severity.
Rule 6- Regarding META posts and joke questions.
Provided it is about the community itself, you may post non-question posts using the [META] tag on your post title.
On fridays, you are allowed to post meme and troll questions, on the condition that it's in text format only, and conforms with our other rules. These posts MUST include the [NSQ Friday] tag in their title.
If you post a serious question on friday and are looking only for legitimate answers, then please include the [Serious] tag on your post. Irrelevant replies will then be removed by moderators.
Rule 7- You can't intentionally annoy, mock, or harass other members.
If you intentionally annoy, mock, harass, or discriminate against any individual member, you will be removed.
Likewise, if you are a member, sympathiser or a resemblant of a movement that is known to largely hate, mock, discriminate against, and/or want to take lives of a group of people, and you were provably vocal about your hate, then you will be banned on sight.
Rule 8- All comments should try to stay relevant to their parent content.
Rule 9- Reposts from other platforms are not allowed.
Let everyone have their own content.
Rule 10- Majority of bots aren't allowed to participate here.
Our breathtaking icon was bestowed upon us by @Cevilia!
The greatest banner of all time: by @TheOneWithTheHair!