Trying to get the frequencies of a .wav file in Python

Question

I know that questions about .wav files in Python have been just about beaten to death, but I am extremely frustrated as no one\'s answer seems to be working for me. What I\'

Answer 1

Try something along the below, it worked for me with a sine wave file with a freq of 1234 I generated from this page.

from scipy.io import wavfile

def freq(file, start_time, end_time):
    sample_rate, data = wavfile.read(file)
    start_point = int(sample_rate * start_time / 1000)
    end_point = int(sample_rate * end_time / 1000)
    length = (end_time - start_time) / 1000
    counter = 0
    for i in range(start_point, end_point):
        if data[i] < 0 and data[i+1] > 0:
            counter += 1
    return counter/length    

freq("sin.wav", 1000 ,2100)
1231.8181818181818

edited: cleaned up for loop a bit