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!
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 :-)
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.
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.
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.
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.
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!
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 :-)
This is a fantastic yt channel!
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.
I'm not sure Posy is a layman.
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.
It's pretty common for blog posts in this arena to just include samples that you click to play.
Good point. The bandcamp link to Posy music is equally pleasant. Nice to find actual mellow music.
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.
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."
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?
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
> 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?