["python","audio","numpy","matplotlib"]
How to generate audio from a numpy array?

I want to create "heart rate monitor" effect from a 2D array in numpy and want the tone to reflect the values in the array.
You can use the write function from scipy.io.wavfile to create a wav file which you can then play however you wish. Note that the array must be integers, so if you have floats, you might want to scale them appropriately: import numpy as np from scipy.io.wavfile import write rate = 44100 data = np.random.uniform(-1, 1, rate) # 1 second worth of random samples between -1 and 1 scaled = np.int16(data / np.max(np.abs(data)) * 32767) write('test.wav', rate, scaled) If you want Python to actually play audio, then this page provides an overview of some of the packages/modules.