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List:       gnuradio-discuss
Subject:    Re: [Discuss-gnuradio] SNR of ADC
From:       "Marcus D. Leech" <mleech () ripnet ! com>
Date:       2017-02-28 16:02:53
Message-ID: 58B59F2D.4040103 () ripnet ! com
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On 02/28/2017 08:53 AM, Sagnik Basu wrote:
> Hi.
>
> I just have a thought - when we use a signal source block to generate 
> a sine wave and use the FFT block to visualize the power spectrum, 
> then the noise floor we see at the FFT window - is it the quantization 
> error of the ADC within the PC running GNURadio?
>
>
> Regards,
> Sagnik Basu
> B. Tech | 2013-2017
> Dept. of Electronics and Communication
> NIT Rourkela
> M: 8337942928
>
There is no "ADC within the PC running GNURadio".

But there *is* quantization noise, because floating-point numbers in a 
computer have finite precision.



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