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RE: [Discuss-gnuradio] Sample rate for source_noise and source_vector
From: |
De Lima Julian |
Subject: |
RE: [Discuss-gnuradio] Sample rate for source_noise and source_vector |
Date: |
Thu, 26 Oct 2006 22:06:34 +0200 |
Thanks
Therefore the USB rate is automatically adapted by the interpolation/decimation
factor! I thinked that it was us that have to adapted the different parameters
(interpolation/decimation and sample rate over USB).
Thank you
Julian
-----Message d'origine-----
De : Eric Blossom [mailto:address@hidden
Envoyé : jeudi, 26. octobre 2006 15:36
À : De Lima Julian
Cc : address@hidden
Objet : Re: [Discuss-gnuradio] Sample rate for source_noise and source_vector
On Thu, Oct 26, 2006 at 05:33:26PM +0200, De Lima Julian wrote:
> Hello,
>
> When you specify a signal_source, you have to set up the sample rate.
This is just for convenience and allows you to specify the output
frequency in absolute instead of normalized terms. If you prefer, you
can of course set the sample_rate to 1.
> But with the noise and vector sources you do not have to specify this
> parameter.
>
> What is the sample rate in the computer -> USB when we generate a noise
> or generate data from a list/file?
The sample rate across the USB is determined by the interpolation or
decimation rate programmed into the usrp.
On receive, USB sample rate = 64e6 / decimation_rate
On transmit, USB sample rate = 128e6 / interpolation_rate
Eric