The invention of measurements and perception


This is going to be pretty airy-fairy. Sorry.

Let’s talk about how measurements get invented, and how this limits us.

One of the great works of engineering, science, and data is finding signals in the noise. What matters? Why? How much?

My background is in computer science, and a little in electrical engineering. So the question of what to measure to make systems (audio and computer) "better" is always on my mind.

What’s often missing in measurements is "pleasure" or "satisfaction."

I believe in math. I believe in statistics, but I also understand the limitations. That is, we can measure an attribute, like "interrupts per second" or "inflamatory markers" or Total Harmonic Distortion plus noise (THD+N)

However, measuring them, and understanding outcome and desirability are VERY different. Those companies who can do this excel at creating business value. For instance, like it or not, Bose and Harman excel (in their own ways) at finding this out. What some one will pay for, vs. how low a distortion figure is measured is VERY different.

What is my point?

Specs are good, I like specs, I like measurements, and they keep makers from cheating (more or less) but there must be a link between measurements and listener preferences before we can attribute desirability, listener preference, or economic viability.

What is that link? That link is you. That link is you listening in a chair, free of ideas like price, reviews or buzz. That link is you listening for no one but yourself and buying what you want to listen to the most.

E
erik_squires

Showing 7 responses by jburidan

A musician with perfect pitch hearing can perceive  whether a tuning fork or oscilloscope is on pitch, or flat, or sharp. Like everything else, the measuring tool is not infallible.
Yes, a robust lack of accomplishment certainly goes a miniscule way toward elevating one's stature in the audio community. 
Humans have known about the octave at least since Sumerian times, i.e., that its sound is pleasing and harmonious. Chimps and some other animals enjoy it, as well. Perception first discovered the octave - perhaps even before there were homo sapiens - and Sumerians were sufficiently captivated to write about it beginning around 3,000 BCE.

Starting around 4,700 years later, the calculus was invented, the existence of sound waves was discovered, and devices to measure frequency were invented. Science was astonished to discover that the octave is a doubling of the frequency of a sound wave, and that the octave is the first harmonic in a series of overtones. The octave has been called "the basic miracle of music."

So, that is the short history of the octave, which was perceived to be harmonious, and has been used to tune instruments in most musical systems, long before it was measured. See this for more:

http://proaudioencyclopedia.com/the-history-of-audio-and-sound-measurement/
Temperature is +2 Fahrenheit but it feels like -30 with the wind chill factor. So, here's an example of measurement v perception. But who decides about the perception?