00:01
Hello students, here given that the signal is band limited to 10 kilohertz.
00:09
Therefore, it is the highest frequency component in the signal.
00:15
Then the signal is sampled with the frequency of 20 kilohertz.
00:20
So given sample frequency which is 20 kilohertz.
00:31
Now the nyquist frequency will be half of the sample frequency.
00:44
Therefore, it will be 20 by 2 10 kilohertz.
00:50
Now discrete fourier transform of n is equal to 1000 samples is computed.
00:58
Which means the frequency resolution of discrete fourier transformer is 20 kilohertz that is sample frequency divided by n value 1000 which is 20 hertz.
01:14
This is frequency resolution of dft that is discrete fourier transform.
01:25
Now the index k is given 854...