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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

FvM,

1. The signed random data/32678(normalized) is feed to FFT.

2. Get the Magnitude of it

3. Absolute the Magnitude

4. Square it

5. 20* log 10 (Square Value) - attachement have a mistake

Note: Should be 10*log 10

Any problem with this step above?