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Altera_Forum's avatar
Altera_Forum
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16 years ago

White Noise Spectrum

I have use a simple LFSR to generare random number to generate white noise. Set of random number are pass through to FFT(power in db vs freq). However, the freq response is increasing at low freq. Th...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
16 years ago

the no of random number generated is same as the number i feed to FFT.

Regarding the -180dB, actually is -90, due to 20log Mag after square.

I have use matlab to generate the white noise and plot into freq domain(FFT). It is totally flat. That make me wonder is the white noise i generated is wrong(decreasing)? i have no idea how to justify it. Even though it is not flat, but is not decreasing...

dizzy....