CS 372: Module 2: Square Wave

Goals

To use numpy operations to create audio
To apply formulate for creating sinusoids and related functions

Instructions

Create a 660hz cosine-based square wave at a which occupies a half of a second, sampled at 44100 samples per second. To do this, create a 660hz cosine wave, then feed it as an argument to the np.sign function

Below is an image of the first 400 samples of the square wave you're shooting for

The Ursinus-WebIDE by Chris Tralie (opens in new tab) and Bill Mongan (opens in new tab)

import io, base64 img_str = "" def save_figure_js(): global img_str buf = io.BytesIO() plt.savefig(buf, format='png') buf.seek(0) img_str = "data:image/png;base64,{}".format(base64.b64encode(buf.read()).decode('UTF-8')) audio_sav_arr = [] audio_sav_sr = 44100 def save_audio_js(arr, sr): global audio_sav_arr global audio_sav_sr audio_sav_arr = np.array(arr).tolist() audio_sav_sr = sr PYODIDE_COUT = "" def pyodide_print(s): global PYODIDE_COUT PYODIDE_COUT += s