generating_sinewaves.py

"""
In audio production, a sample rate (or "sampling rate") defines how many times per second a sound is sampled. 
Technically speaking, it is the frequency of samples used in a digital recording.
"""
import numpy as np
from scipy.io import wavfile

sampleRate = 100
frequency = 10
audio_length = 1 #second
amplitude = 10

t = np.linspace(0, audio_length, sampleRate * audio_length)  #  Produces a given 'length' seconds Audio-File
y = amplitude*np.sin(frequency * 2 * np.pi * t)  #  Has frequency of given 'frequency'
# wavfile.write('Sine.wav', sampleRate, y)

plt.plot(t,y) # plot using pyplot library from matplotlib package
plt.title('Sine wave f='+str(frequency)+' Hz') # plot title
plt.xlabel('Time (s)') # x-axis label
plt.ylabel('Amplitude') # y-axis label
plt.show() # display the figure