November 2007
Intermediate to advanced
736 pages
46h 32m
English
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MAGNETIC PLAYBACK
All methods of recording and reproduction rely on a sequence of reversible processes with sound vibrations at one end of the sequence and a lasting change produced in some other property at the other end.
During playback the magnetised tape recording is moved at the same speed past the poles of the magnet and induces a field in the magnet. This, in turn, induces a current in the windings, which can be amplified to reproduce the original sounds, as shown in Fig. 10.2. In practice, all these changes are superimposed on a very high frequency current of about 80 kHz, which acts as a carrier wave for the low-frequency vibrations.
The amplitude of the voltage across the head coil depends on the rate of change of flux in the core assuming ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.