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LPs revisited...
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Topic: LPs revisited... (Read 12015 times)
jarmo
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Re: LPs revisited...
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Reply #60 on:
August 23, 2009, 12:54:51 PM »
For some reason I had this kind of pic in my head:
http://www.jiscdigitalmedia.ac.uk/images/ITDA-03-aliasing.jpg
You know, the more samples you take, the better the "digital curve" will be... If you just connect the dots, you won't get a proper waveform....
But it's been a while since I was this geeky....
/jarmo
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wight gunner
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Re: LPs revisited...
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Reply #61 on:
August 23, 2009, 01:23:35 PM »
Slightly off topic, but my dogs don't like Shacklers Revenge, soon as it comes on they're gone, but not on any other track (GnR or other) This frequence talk and non-audiable to human levels, got me wondering if there's a noise/pitch whatever that they don't like. And its like from the very first second, they just get up and leave....freeky
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Re: LPs revisited...
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Reply #62 on:
August 23, 2009, 01:35:12 PM »
Jarmo. That's exactly it... For the player, it is not necessary to have the actual full waveform. All it needs is enough information so that it can present every component of the signal: the frequencies, and their amplitudes. The picture shows really well what's going on. As the sampling rate is so low, the decoder doesn't get enough information to produce the original signal. Instead, what it sees is the lower picture.
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