.wav file doesn't play any sounds
audio, numpy, python, scipy, wav
Solution
The vector that you are using to create the wave file contains floats, but `scipy.io` interprets them as 64 bit ints (as is mentioned in the docs), which is not supported by most players.
Changing the last line to
wavfile.write('music.wav',fs,music.astype(np.dtype('i2')))
should produce a file that can be played properly.
Problem
I want to create a .wav file in Python using the numpy and scipy libraries, where multiple tones are played, the way I intend to do it is by storing my frequencies in an array and then the generated signals are stored in another one. I've managed to create such file with the desired playtime, but it doesn't play any sound. Am I missing something? Thank you. ``` import numpy as np from scipy.io import wavfile freq =np.array([440,493,523,587,659,698,783,880]) #tone frequencies fs=22050 #sample rate duration=1 #signal duration music=[] t=np.arange(0,duration,1./fs) #time for i in range(0,len(freq)): x=10000*np.cos(2*np.pi*freq[i]*t) #generated signals music=np.hstack((music,x)) wavfile.write('music.wav',fs,music) ```