"Breathing" of the air

It is interesting that Shadorne mentions Air around 7 to 12khz. What about the Air content below 7 khz. There certainly is lot of air moved at low freqs- low, mid and high bass and even lower to mid mids.

Indeed. I may be misunderstanding Chris. "Air" is a technical term used in the recording industry. Each instrument has a band where you tend to get more "air" - a piano is around 10 to 12 KHZ (this is the sound of the strings after a note - or the sound a grand piano produces in a room when another instrument is played - the air vibrations cause the piano strings to "sing" like a harp only not as much).

Kodo on Naxos is an awesome sounding recording - very lifelike - drums are particularly good for air because you hear all the timbre of the drums - percussion has so much audible "air" because it excites the room and being percussive you don't get "masking" as you do with many instruments (of course it depends how the drums are setup too). Sheffield Labs drum track is another good one.

What I mean by "etched" is exactly how you think of it - imagine an "etching" where a picture is cut from wood with deep grooves...when "air" is correct it sounds light and delicate and related to the instruments and room reverberation....when "air" is heavy or "deeply etched" it means you have mechanical resonance or non-musically related sounds that go on much longer and mask the "air" on the recording. Highly damped speaker drivers will help you hear more air and lower IMD will help too - anything light weight or that has a tendency to resonate in the audible band will tend to mask or rob the natural "air" of the recording by imposing it's own signature (jitter does this)...two cents.

BTW - added "air" from manipulation of the recording by the playback system or harmonic resonance or reverb etc. can be pleasant too. So more "air" can also be used to describe equipment that adds its own signature to the recording.

Well, to chime in, I like Shadorne's two cents and Athmasphere's definition, because my idea of "air" is closely related to what I would call the "aura" around instruments being played, which is so evident in live music and rather difficult to reproduce properly at home, even with the "right" recordings.

"BTW - added "air" from manipulation of the recording by the playback system or harmonic resonance or reverb etc. can be pleasant too. So more "air" can also be used to describe equipment that adds its own signature to the recording."

Agree. I think you can easily be able to discern if this is indeed a manipulation or truer to recording sound, by listening to other cues- lIke fast and quick transients do have air but won't linger on too long vs slower and gentle notes meant to to vibrate will and in case of manipulated sound will not sound entirely in phase and coherent- something will be off.

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The first time I ever heard "air" in my system was an amazing thing to me. Went out and told a couple of non-audiophile friends about it...when they evntually came over to visit, I excitedly put on a couple of cd's do demonstrate what I was talking about. After a couple of minutes of listening, they looked at each other and then they looked at me like I was crazy....they couldn't understand what all the fuss was all about. To me, it was sonic bliss.

Man, this is a lonely hobby....kind of like being on earth alone and I can only communicate to other beings on other planets via radio (internet).
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