Wednesday, November 8, 2017

Analog recordings have digital recordings for tea?


Do they send them to the cleaners?


Lunatic - Gazebo instrumental on YouTube played by a disc 12" record
https://m.youtube.com/watch?v=FLEUYHzXbu4


This may be because analog recordings use vibrating electrons or molecules to represent the vibration of molecules or electrons in musical instruments, in an analogous way. Disc records use for example vinyl molecules to modulate the grooves with the signal itself. Without modulation a straightened groove would look like a flat V shaped river shore.


Digital systems use numbers to represent a tremendously abrupt changing live music signal. When there are no more 1 1 1 1 1 1 1 1 1 ... 1 1 1 left to represent a peak of the signal they give the worst abrupt distortion.


Analog systems overload gradually and gracefully creating overtones or harmonics like real acoustic or analog electronic instruments.


This process creates a conditioned signal with a high average level and no nasty peaks.


It can then be digitized and sound loud without overloading op amps or digital circuits, analog to digital converters etc.


So that then mankind can download the numbers and reconstruct the analog conditioned waveform on YouTube to enjoy.


Analog systems are extremely linear at small signal level amplitude excursions and progressively nonlinear at higher (levels) amplitude.


Just like nature. Like the earth being flat for snall distance travels. Like our ears.


Analog systems use non linearity to extract or store more information, a great property for recording music lively. This is because they fit something big to something small. A high dynamic range to a small one. So that we can still hear and enjoy everything while being inside the noise of a car for example.


Is digital great for archiving? Time will show.


Is analog great for music production. Time has shown.


References:


Tubes vs Transustors is there an audible difference? - Russel O. Hamm - JAES


Applied Electronics - T.S. Gray - MIT


Electronics, a Systems Apreach - Neil Storey




















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