Python fft frequency spectrum

Frequency spectrum signal python

#A short example to extract the frequency spectrum of a signal
import numpy as np
import matplotlib.pyplot as plot
samplingFrequency  = 100
t=np.arange(0,5,1/samplingFrequency)
signal=np.sin(2*np.pi*t)
fourierTransform = np.fft.fft(signal)/len(signal)
fourierTransform = fourierTransform[range(int(len(signal)/2))]
tpCount     = len(signal)
values      = np.arange(int(tpCount/2))
timePeriod  = tpCount/samplingFrequency
frequencies = values/timePeriod
plt.plot(frequencies, abs(fourierTransform))

Source: pythontic.com

Similar codes

0 vote286 views1 answer
Python extract words from string with format
Python
9 votes296 views3 answers
Save model pickle
Python
0 vote281 views1 answer
Uneven chunks of array slices
Python
0 vote306 views1 answer
Hash python png
Python
1 vote283 views1 answer
Import tknter
Python
0 vote294 views1 answer
Django vs code extensions
Python
0 vote292 views1 answer
How to tell if member is a bot discord.py
Python
0 vote297 views1 answer
Python how to initialize wikipediaapi
Python
0 vote294 views1 answer
Import external script in django views
Python
0 vote290 views1 answer
Seaborn documentation x axis range
Python