Generating audio signals with custom parameters

We can use NumPy to generate audio signals. As we discussed earlier, audio signals are complex mixtures of sinusoids. So, we will keep this in mind when we generate our own audio signal.

How to do it…

1. Create a new Python file, and import the following packages:

   import numpy as np
   import matplotlib.pyplot as plt
   from scipy.io.wavfile import write

2. We need to define the output file where the generated audio will be stored:

   # File where the output will be saved
   output_file = 'output_generated.wav'

3. Let's specify the audio generation parameters. We want to generate a three-second long signal with a sampling frequency of 44100 and a tonal frequency of 587 Hz. The values on the time axis will go from -2*pi to 2*pi:

   # Specify audio parameters
   duration = 3  # seconds
   sampling_freq = 44100  # Hz
   tone_freq = 587
   min_val = -2 * np.pi
   max_val = 2 * np.pi

4. Let's generate the time axis and the audio signal. The audio signal is a simple sinusoid with the previously...