rezwanh001

function [maxtab, mintab]=peakdet(v, delta, x)
%PEAKDET Detect peaks in a vector
%        [MAXTAB, MINTAB] = PEAKDET(V, DELTA) finds the local
%        maxima and minima ("peaks") in the vector V.
%        MAXTAB and MINTAB consists of two columns. Column 1
%        contains indices in V, and column 2 the found values.
%      
%        With [MAXTAB, MINTAB] = PEAKDET(V, DELTA, X) the indices
%        in MAXTAB and MINTAB are replaced with the corresponding
%        X-values.

rezwanh001

"""DFT and FFT"""
import math

def iexp(n):
    return complex(math.cos(n), math.sin(n))

def is_pow2(n):
    return False if n == 0 else (n == 1 or is_pow2(n >> 1))

def dft(xs):