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Re: [Discuss-gnuradio] Sample rate nomenclature

From: Matt Ettus
Subject: Re: [Discuss-gnuradio] Sample rate nomenclature
Date: Wed, 17 Jan 2007 11:21:50 -0800
User-agent: Thunderbird (X11/20070104)

Chris Stankevitz wrote:
> Q1: When using USRP source_c (complex) with decimation == 8, am I
> getting 4 million complex samples per second?  64Mhz / 8 = 8MHz floats
> = 4MHz complex


64 MS/s complex samples / 8 = 8 MS/s complex

> Q2: If I saved that data to a file and shared it with people, would I
> advertise it as "Complex data, 4 million samples per second"?

Call it 8 MS/s complex.

> Q3: If someone read that in using file_source(gr.sizeof_gr_complex,
> "file.in") and wanted to perform an FFT, what would he specify as the
> sample rate to the fft_sink_c(sample_rate=x)?  My guess is
> sample_rate=4e6.



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