Retekess TD157 wireless paging system - signal with Python
5.2.2021 Retekess TD157 wireless paging system - signal with Python 433.920 MHz, AM (ASK/OOK) Python + Matplotlib/Scipy/Numpy Signal recorded from IQ to AM with SDR# import scipy.io.wavfile as wav import scipy.signal as signal import numpy as np import matplotlib.pyplot as plt fs, data = wav.read('am-rec.wav') plt.figure(figsize=(13,4)) plt.grid(b=True, which='major', color='#666666', linestyle='-') plt.minorticks_on() plt.grid(b=True, which='minor', color='#999999', linestyle='-', alpha=0.2) plt.plot(data) plt.xlabel("Samples") plt.ylabel("Amplitude") plt.title("AM") plt.show() import scipy.io.wavfile as wav import scipy.signal as signal import numpy as np import matplotlib.pyplot as plt fs, data = wav.read('am-rec.wav') asg = signal.hilbert(data) ampenv = np.abs(asg) plt.figure(figsize=(13,4)) plt.grid(b=True, which='major', color='#666666', linestyle='-') plt.mino...
