Journal | Archives

Jack the Giant Killer

Precursor to Jack of Jack and the Giant Beanstalk, he fought for the Knights of the Round Table.

Goliath was 4 cubits and a span, or roughly 6'9", in the Dead Sea Scrolls, as opposed to the 2 extra cubits in the Old Testament that pushed him to 9'. Is Philistine now known as Palestine?

superposition

There's something that's been bothering me for the past few months. It involves a principle that's taught in physics and differential equations, and even in any technology-oriented music class: superpositioning. Up until today, though, I haven't attempted to dissect it. Maybe it's a lack of inspiration.

The idea behind superpositioning is that two or more waves – both their frequencies and amplitudes – can be combined to produce a composite wave.

So, the question that's been nagging me is this: is recorded music just a single sound wave?

It just didn't seem right. Superpositioning is infallible (as it's taught and in all the applications it's been used for to solve problems), so theoretically, yes, the different layers of sounds we hear in music from Amon Tobin or Nine Inch Nails hits our ears as one wave.

But how?

I theorized that the data in sound formats is partitioned into different tracks to carry varying sounds. That couldn't be right, though, because some songs are obviously more complex-sounding than others. A potentially unlimited number of tracks (even 100) couldn't be created without the sound information taking up much more space than a compact disc can hold.

In the studio, of course, multiple tracks are used. But those are mixed down into one, in the end. And even in those multiple tracks, the sounds aren't usually of one frequency characteristic or whatever.

And then there's timbre – the quality of the sound – that gives instruments, voices, and crumbling buildings a unique sort of fingerprint. If I were to sing the same exact melody as a piano, everyone could tell me apart from the piano and at the same time recognize we're both hitting the same notes.

Sine waves are the simplest sound wave. Varying sine waves added together produce increasingly complex waves. Instruments create their own set of varying sine waves, producing their unique sound, their timbre.

Timbre is the product of superpositioning. Songs are the timbre of the musician. It's one wave in the end.

That's my accomplishment of the day. I'm going to mow the lawn now.