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Audio reproduction originates from the first phonograph and all its evolution is closely related to the technical and cultural progress the mankind has made during the last hundred years. Appearing the long-play vinyl discs was a revolutionary event as well as the subsequent advent of transistor audio equipment for their reproduction. But surprisingly, these main attributes of playing music in the sixties and seventies remain actual and now, when we witness a real boom of applying digital technique in all that concerns audio and video.
All agree that the reproduced sound should be as close to its live original as only possible. First of all, this means their identity in tone balance, dynamic range and spatial distribution, the latter is attempted to be reached by using two stereo channels. Also, the reproduced sound should be free from any additional details (noise, clicks etc) which don't present in the original sound.
Note, all these sound characteristics can be artificially regulated or corrected with the help of a modern audio equipment, all that is successfully accomplished when recording CDs. But these manipulations are unable to add some subtle details which really approach the reproduced sound to its live original. These details, I call them the live sound content, are natural reverberation, the tiniest tonal modulation, distinction in simultaneous reproduction of several sound components (voices, instruments) and other signs of sound naturalness.
All they are picked up during the properly made record of a live performance and then are safely stored within a soundtrack on the recording media (master tape and then LP). Flaws in recording result in the lack of these details, i.e. in the dead sound, being at the same time tonally balanced, with good stereo channel separation.
Another problem is to reproduce, along with the soundtrack, the above live details, because not any audio equipment can do that with minimum loss. It's quite understandable given that the vinyl is very delicate media and getting signal from the disc involves a complicated electromechanical process, the signal itself is small in amplitude and requires careful handling. Sadly, but a lot of regularly played vinyl discs forever remain a buried treasure of such live sounds.
If the reproduction system is capable of retrieving the live details from the disc, they can be heard when playing the soundtrack, they also are left within the soundtrack after its conversion to the digital form with the help of an ordinary computer and the decent sound card installed. Everyone can enjoy then these natural sounds, so there are no grounds to blame the digital technique in its inability to cope with them. The recorded live sounds appear to be of such vitality, that even subsequent mp3-conversion can not "kill" them.
But is it worth to search the unique audio equipment and LPs with rich live sound content in order to bring this content to a mass listener who consider music only as a background and means for obtaining information? Cheap CDs and downloadable mp3-files with boosted bass and treble and zero noise pauses are quite suitable for that and we shouldn't demand much from them.
In conclusion, I offer to download and listen to some music samples addressed to those who love, understand and value good music. There is no time and place to explain how these samples were recorded, I simply would like to give maximum pleasure to grateful listeners and to hear their comments.