Re: [Discuss-gnuradio] Parallel Port Interface

[Stephan Olbrich]

Hi,

> Going back to my soundcard suggestion, you could buy a 96ks/s stereo soundcard
> for less than $100 these days.  Take your input signal, mix it (multiply) by a
> 48 kHz sine and cosine wave, lowpass filter those 2 outputs, and feed to the
> soundcard stereo inputs.  You'll have sampled the spectrum from 0 to 96kHz at 
> 24
> bits per sample.
Can someone give me a hint what's the point in mixing with a sine and
cosine and sample both signals? 

Stephan