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 data = np.random.uniform(-1,1,44100) # 44100 random samples between -1 and 1 scaled = np.int16(data/np.max(np.abs(data)) * 32767) write('test.wav', 44100, scaled)
If you want Python to actually play audio, then this page provides an overview of some of the packages/modules.
For the people coming here in 2016 scikits.audiolab doesn't really seem to work anymore. I was able to get a solution using sounddevice.
import numpy as np import sounddevice as sd fs = 44100 data = np.random.uniform(-1, 1, fs) sd.play(data, fs)