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Re: [Discuss-gnuradio] Questions about the qt frequency display.

From: Stefan Gofferje
Subject: Re: [Discuss-gnuradio] Questions about the qt frequency display.
Date: Sat, 30 Apr 2011 17:29:41 +0300
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On 04/30/2011 05:07 PM, Marcus D. Leech wrote:

> In situations like this, it's usually helpful to the assembled multitude
> here to post
>    your .grc file, to help in diagnosis, or, post a screen-shot of your
> GRC flow-graph
>   at least.  Just makes it easier for people to spot the obvious errors.

Well, as I said - I did nothing else but connect a signal source
(cosine, 1kHz) to the qt sink. Sample rate 44.1kHz, center frequency

In a spectrum display I would expect a spike, well, at 1khz, i.e. pretty
much left in the display. With 2 signal sources (at 1 and 5KHz), I would
expect 2 spikes.
Maybe I didn't get the concept of the qt frequency display right...
Is it a plain stupid spectrum display or does it do some processing on
it's own? It also doesn't really seem to matter what I set as bandwidth
and center frequency. Are those parameters only for the axis labels?

- -- 
 (o_   Stefan Gofferje            | SCLT, MCP, CCSA
 //\   Reg'd Linux User #247167   | VCP #2263
 V_/_  Heckler & Koch - the original point and click interface
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