Hi Rodrigo, both is right, due to Parseval's Theorem stating that energy of a signal in time and frequency domain is equivalent.
Regarding "File is large": of course it is; I don't know what sampling rate you're using, but assume you have 1MS/s of complex float, that will be 2*32bit*10^6/s = 8MB/s of data. Regarding "it cannot be opened": Opened by what? Maybe you're not aware of: http://gnuradio.org/redmine/projects/gnuradio/wiki/FAQ#What-is-the-file-format-of-a-gr_file_sink-How-can-I-read-files-produced-by-a-file-sink Greetings, Marcus On 13.08.2014 23:29, Rodrigo Rozário wrote: > Hi Martin, > > I am generating by the following flowgraph: > > RTL2832 source -> FFT -> File Sink > > I tried too: > > RTL2832 -> File Sink > > Is it right? > > > > > 2014-08-13 9:00 GMT-03:00 Martin Braun <[email protected]>: > >> How are you generating those files? >> >> >> On 08/12/2014 01:30 AM, Rodrigo Rozário wrote: >>> Hi guys, >>> >>> I'm trying to configure a spectrum analyzer with GNU Radio and I had a >>> many problems. I tried a lot of ways to do it but all of them failed. >>> >>> More specifically, I need to get information about the FFT and store it. >>> >>> I tried the following: >>> - I get data from the block RTL2832 and store it: this is generates a >>> very big file data end a can't open. In a file of a few seconds of >>> storage (50Mb) I can't recognize the power values. >>> >>> - I try to store and after open it on a editor, but not work. >>> >>> I think that there is any problem in the format of the data stored. Can >>> you help? Anyone already can do it? >>> >>> >>> -- >>> /*Rodrigo Rozário */ >>> /CREA-DF - 21339/D-DF - Professional Registration/ >>> /Engenheiro de Redes de Comunicação - //Network Engineering/ >>> /Universidade de Brasília - //University of Brasília/ >>> / >>> / >>> >>> >>> >>> >>> _______________________________________________ >>> Discuss-gnuradio mailing list >>> [email protected] >>> https://lists.gnu.org/mailman/listinfo/discuss-gnuradio >>> >> >> _______________________________________________ >> Discuss-gnuradio mailing list >> [email protected] >> https://lists.gnu.org/mailman/listinfo/discuss-gnuradio >> > > > _______________________________________________ > Discuss-gnuradio mailing list > [email protected] > https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
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