Python Machine Learning Cookbook - Second Edition

How to do it...

Let's take a look at how to synthesize some music:

1. Create a new Python file and import the following packages (the full code is in the synthesize_music.py file that's already provided for you):

import json 
import numpy as np 
from scipy.io.wavfile import write 

2. Define a function to synthesize a tone, based on input parameters:

# Synthesize tone 
def synthesizer(freq, duration, amp=1.0, sampling_freq=44100):

3. Build the time axis values:

    # Build the time axis 
    t = np.linspace(0, duration, round(duration * sampling_freq)) 

4. Construct the audio sample using the input arguments, such as amplitude and frequency:

    # Construct the audio signal 
    audio = amp * np.sin(2 * np.pi * freq * t) 
 
    return audio.astype(np.int16)  

5. Let's define ...