Re: [Discuss-gnuradio] SNR of ADC

[Marcus D. Leech]

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.