Is There a Measurement for “Dynamics”

[Robh3606]

Surely. What I am questioning is the correlation between these results and audiophile typical listening levels.

They look at dynamic compression/expansion from 76dB to 102dB @ 1 meter. These are not typical levels? They are for me and everyone I know.

It diminishes their usefulness if you consider their use for audiophile information - just my point.

What exactly is audiophile information? Baseless claims that have no real world grounding in science or fact?

BTW, there is an easy method to check compression with real music - monitoring current and voltage on the driver while playing music.

That doesn't tell you anything. There is no correlation to changes in SPL due to heating.

No, measurements per se are not science. They are part of science.

Are they not designed as experiments and developed using the scientific method? Are they not pear reviewed when they are published in the AES? You are splitting hairs playing a game of semantics

Rob

 

[Holmz]

…

BTW, there is an easy method to check compression with real music - monitoring current and voltage on the driver while playing music.

Although much less studied than steady thermal compression, transient thermal compression has been addressed by scholars. Probably manufacturers also look at it.

Sort of depends on what music we are talking about.
A piccolo and a pipe organ are fundamentally different and compression will be happening in different drivers,

Irrespective of that some plot showing compression over frequency sort of covers all the instruments within the band measured.

And then if one really wanted to, they could use a microphone to measure the output and compare that to the signal.
This is pretty much how the music got onto the media in the first place, and probably how the Klipple is doing it, unless they are using the laser for that.