EQ: A video about all forms of equalizers

https://www.youtube.com/watch?v=CLAt95PrwL4

80•robinhouston•19h ago

Comments

olooney•19h ago

Videos don't do well on Hacker News, but I encourage people to at least watch the first couple minutes of this one. The oscilloscope visual overlay is interesting and the editing is really good.

Also, given the topic (audio equalizers) there's no way it could have been a blog post.

IndySun•19h ago

Good point. The bandcamp link to Posy music is equally pleasant. Nice to find actual mellow music.

creer•13h ago

I would hope mostly what doesn't do well is useless titles - like one word, or a pithy joke that makes sense only in retrospect. Unfortunately there is also that guidelines which discourages doing better.

gus_massa•6h ago

Usually the subtitle is fine:

> A video about all forms of equalizers. From one-click bass buttons to advanced studio correction.

That can be reduced to:

"Equalizers: From bass buttons to advanced studio correction."

PS: I'd try to keep the original title too, but in this case it doesn't look nice

"EQ: Equalizers - From bass buttons to advanced studio correction."

cwillu•3h ago

It's pretty common for blog posts in this arena to just include samples that you click to play.

IndySun•19h ago

A pleasant, if muted, layman's 10 minute journey to explain sound, eq, and speaker response. It gets juiciest on room eq correction/compensation, approaching the 9 minute mark.

kragen•2h ago

I'm not sure Posy is a layman.

tverbeure•3h ago

Very first sentence: "This is pink noise... if you measure it, you can make it look like a straight line."

He then shows a horizontal straight line: that's white noise?

lelandbatey•3h ago

Pink noise distributes energy logarithmically in a way that matches the the sensitivities of the human ear. The graph which he shows on screen is ALSO in that same logarithmic space, hence why it shows pink noise as flat: it's flat as far as how humans hear it. White noise is not perceptually flat to humans. Thus when testing audio, it's important to use pink noise instead of white noise.

https://en.wikipedia.org/wiki/Colors_of_noise#Pink_noise

tverbeure•2h ago

> The graph which he shows on screen is ALSO in that same logarithmic space, hence why it shows pink noise as flat

Does this also mean that audio equipment in general will display a spectrum with this kind of logarithmic offset adjustment?

esafak•3h ago

In the 70s/80s every home stereo system -- racks of stereo equipment stacked a meter high -- had a dedicated equalizer. It was not just for audiophiles!

billfor•2h ago

There was a company called DAK in the 80's that sold all sorts of interesting stuff and I still use my BSR EQ-3000 which is an equalizer with a spectrum analyzer display fed by a microphone that you walk around the room with to confirm your settings. It even has a pink noise button that injects that into the amp so you have a uniform pattern to equalize. Sort of like an analog Sonos Trueplay I guess. We could do all of this in the 80s :-)

SanjayMehta•47m ago

I built my own 10 band equaliser using instructions from Elektor (I think) back in the 80s. The dream was to acquire a spectrum analyser but real life intervened.

Not sure when I even powered up my stereo system. Probably doesn't even work now.

BlaDeKke•2h ago

This is a fantastic yt channel!

adzm•1h ago

Highly recommend their lightbulb video as well.

evantravers•1h ago

I knew this was a Posy video before even opening the link.

activexray•1h ago

I love Posy's channel so much. Really beautiful love letters to all kinds of vintage tech (plus his own music!).

franczesko•29m ago

I tried to post Posy's videos a few times here, but with no bigger interest.

His videos about LCD technology are hypnotizing. Bonus - he makes all the music.

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EQ: A video about all forms of equalizers

Comments

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