Hi! Martijn van Buul írta: > > Another idea: whabout only using the 22 and 11 KHz-signal? 22 KHz = 0 and 11 > > KHZ = 1. > > Well, I haven't found time to complete my interface last weekend, but I think > that the whole idea is still possible. Maybe not at 4 kb/s, but most > definately at 2.2 kb/s I'm not really interested in this recording stuff (...well I don't even have a CD player instead of my CD-ROM in the computer). But here's another idea. CD players expect waves that usually were recorded in studios, all with the usual low-pass filter stuff. Also, the oversampling/interpolating/etc. DAC's in the players were optimized for such soft waves and not at all for this square-like bitstream signal. What if the stream, before recording to the CD, was rather optimized for transmitting sinusoidal waves (like modems do through a telephone line anyway)? Then the DAC would cause less troubles (since it should better re-generate those soft waves) and there would be also less problems with the analog to bitstream decoding logic. L. - This message was sent through the cbm-hackers mailing list. To unsubscribe: echo unsubscribe | mail firstname.lastname@example.org.
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