Quote:
Originally Posted by jamato8 
Dynamics as that fluctuation of sound with a clean leading edge that has impact, has attack that does not bleed onto other notes or areas where it should not.
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To me that sounds like separate and impact and not necessarily dynamics. Stereophile defines dynamics and dynamic range as:
Stereophile: Sounds Like? An Audio Glossarydynamic Giving an impression of wide dynamic range; punchy. This is related to system speed as well as to volume contrast.
dynamic range 1) Pertaining to a signal: the ratio between the loudest and the quietest passages. 2) Pertaining to a component: the ratio between its no-signal noise and the loudest peak it will pass without distortion.
Now, I'm not saying that Stereophile is the end-all be-all for defining how we use words to describe music, but on the other hand there is something to be said for a standard language that is used to refer to things consistently so we can all infer the same thing from a subjective statement.
As a classically trained musician I was taught that dynamics deal with the variety in volume indicated by markings such as p(iano), f(orte), mf(mezzo forte=medium loud)... etc.
Naxos defines it as the level of sound (loud or soft) via their dictionary:
Musical Terms | Music Glossary: Terminology | Dictionary - D-F
I can check the Harvard Dictionary of musical terms when I get home as it tends to be more thorough.
Perhaps that is what boomana is getting at as far as asking for qualifications. It can be difficult to interpret a review or impressions when you have to try to determine what the writer means by "dynamic, musical, bright,... etc.
just my 2 bits.
