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How pure is the signal when it reaches our ears?
Recently, I saw an oscilloscope screen capture of digital and vinyl signal =
in a forum. The vinyl signal as expected was wobbling and jittery. It was c= oncluded for that reason that digital playback is more accurate representat= ion of real sound as it preserves and plays back the original signal almost= unaltered. However, in real life, how much of vinyl signal is distorted compared to th= e actual sound waves arriving at the ear's canal? We are talking about the = most fluid medium (air) that stands in between our ears and the source. Unl= ike a wire, the air that transmit the waves to our ears relies on the vibra= ting particles of air. The air's density varies every inch. It is the most= unstable medium to transfer any audio signal accurately. Signal reaching o= ur ears may very well be wobbling and jittery like seen in the oscilloscope= .. A simple speaker's measurement of loudness itself reveals at any other dist= ance of 1 meter it varies so much that the measurement becomes so much mean= ingless for a proper evaluation of speakers. That's exactly the reason why = some manufacturers are not publishing the technical specs other than what's= can be measured by point to point wired measurements. That medium (wires) = is stable and repeatable but not the measurements involving signals traveli= ng through the air which varies with temperature, pressure, wind and many o= thers factors. We are actually listening to wavy, wobbly and jittery signal all the time. = That's natural. Vinyl signal maybe be distorted but it may be the correct r= epresentation of the way real signal reaching our ears or at least make it = as close as what actually reaches our ears in live sound. ST |
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