


Function to create colored noise using LIGO Design Sensitivities
Design PSD is modified between 15 Hz and 700Hz.
Input: N = Total number of samples,
Fs = Sampling Frequency,
(Optional) noise_num = noise realization number from a pre-created noise realizations file
(Optional) noisefile = pre-created noise realizations filename
Output: outNoise = colored noise vector,
PSD = two-sided PSD vector for positive DFT frequencies