Re: [Discuss-gnuradio] Question on FFT (Josh Blum)

[Sam mite]

Hi Josh!

Thanks for reply. I change type from complex float to float but still I found no negative frequency. I attached the GRC image. What should be the type of blocks to get both frequencies ?

-- 

Best Regards,

Sam

On 08/17/2012 11:45 AM, Sam mite wrote:
> Hi All,
>
> I wanted to work on FFT using gnuradio. I have a question. Why there is
> only one frequency shown in plot ? why negative frequency is not being
> displayed ? I have attached picture of GRC implementation and FFT plot as
> well.
>

So, the blue color means complex floats. The signal source is not
producing sin(t), its producing e^jwt

-josh

> Best Regards,
> Sam
>
>
>
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