You may also read "the audio code" on TuneLand http://tuneland.techno-zone.net/t268-the-audio-code
Have you noticed in this hobby how very few times you actually hear people talk about what the audio signal as a vibrating moving object is? Just as water flows, so does the audio signal have flow to it. The electrical part of the chain we call current. It isn't something that starts at one place and stops at another at the same time. There's movement. To date no matter how advanced our audio technology is, there's still a time domain attached to it's make up. That 20-20,000 oscillating signal monster actually travels as a flow through the entire audio pathway. It starts as movement, it's store, then read and off to the races again.
There's a couple parts to the signal, one is the language. This is the none moving part which is on the storage. The other is the moving part, which we call "the audio pathway, or audio chain". As soon as the switch is flicked there's an electronic charge that goes from the wall to your speakers. Depending on how quiet the system is or how good your hearing is you can be sure sound (energy) is being produced by the system even before the music starts. The language that is being stored on the source gets mated with the electronic flow and the marriage is consummated.
That's not all that's going on. By nature every part no matter how big or small that the signal passes through and it's physical surroundings no matter how weak or strong also becomes part of the signal. This is called physics and is everywhere and intermingles with everything. The audio signal is affected by humidity, pressure, gravity and fields. All of these forms are stimulative energies which means they coexist and mingle. In some way they are all a part of each other and depend on each others specifics. Typically these energies do not hold absolutes but work to find harmony as conditions change. The conditions themselves are in constant change, just as the Earth goes from day to night back to day. All energies working with your system are based on oscilations. Some are very tiny and appear to line up and others are huge and are more like 3 dimensional oceans. No matter how big or small they all have something in common, value. It may not seem possible, but energy changes that happen well away from your system have an effect in proportion according to it's value "in purpose". Energies in physics work as a balancing act always looking to be in perfect form. We call this settling.
As the audio signal makes it's way through the chain it's constantly going through settling and adapting. One inch it's traveling through a big piece of metal the next through a tiny long wire. Everytime the signal hits a different material and shape it takes on the energy "flavor" of that material, size, moment and conditioning. The signal is not necessarily damaged or lost but parts of the signals cycles can be decreased in value becoming out of balance as compared to other cycles traveling. In the end with everything affecting everything else it's easy to see why all components, parts pieces and rooms sound different from each other.
Hopefully this thread will give understanding to the delicate yet powerful event we have come to know as the audio code.
michael green
MGA/RoomTune