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[Discuss-gnuradio] Re: USB2 <-> fast ADC & DAC

From: MacLeod, Matthew
Subject: [Discuss-gnuradio] Re: USB2 <-> fast ADC & DAC
Date: Tue, 3 Jun 2003 13:07:30 -0400


Phase reversal is just a matter of flipping a plus sign to a minus sign on
the second term somewhere in the processing. The thing is the literature is
often pretty inconsistent about whether the board is giving you a minus or
plus on the second term anyway, so it's something you'd have to work out
regardless. So basically it shouldn't cause much difficulty, just one more
thing to keep in mind when you're working out your signs.



-----Original Message-----
Date: Tue, 03 Jun 2003 23:43:26 +1000
From: Alan Gray <address@hidden>
To: address@hidden
Subject: Fwd: Re: [Discuss-gnuradio] USB2 <-> fast ADC & DAC

Further to this discussion, I've been wondering how difficult it is to deal 
with signals which are sampled in the even nyquist zones and thus have 
their phase reversed in the spectral sense.

Is processing the signal going to be more difficult than a situation in 
which the signal is sampled in an odd zone, and is not reversed? Is there 
anything I should specifically look at to aid in processing?

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