Written by Adam Smith on November 09, 2018 09:05:54 You know the old saying, “There’s no such thing as a free lunch”?
Well, when it comes to the internet, there is no such rule.
That’s why we need to be vigilant about the fact that you need to pay for access.
While there are plenty of tools out there for testing Python audio code, there’s also no single app that does all the heavy lifting for you.
For that, you need a Python script.
There are tons of them, and a good number of them offer some pretty nifty features, but most are pretty niche.
We’ll show you five of the best, and show you how to use them to test Python audio.
This post is a part of Ars Technic’s series of articles that are focused on testing your Python code in a real-world environment.
It was written by Adam Kowalczyk, a Python developer at The MIT Media Lab.
To download the entire series, including the entire list of topics, you can visit the Ars Technics website.
If you’d like to learn more about the history of the internet and what it means for programming, check out our previous Ars Technically series.
How to use python’s audio framework in a virtual environment If you want to test your Python audio, you’re going to need a virtual machine to run it on.
You can use the VirtualBox or VirtualBox-extended packages for Linux or macOS, and for Windows, you’ll need a Windows virtual machine.
To use these, you will need a VM image.
We’re going with the VM image option for our example, since it’s the most common option, but you can use any.
VirtualBox allows you to install and run your own virtual machines, and it’s free.
It also has the advantage that it’s super easy to configure.
We want to use our example VM, but if you’re running Ubuntu, you could easily install the VM, and you can also install the same VM on Windows.
You need to set the hostname of your VM, then create a virtual directory for it, and add some additional folders for your Python projects.
To set up our VM, open a terminal window and run the following command: mkvirtualbox -p vm_name If you don’t see the virtualbox prompt, type sudo .
Now type in the following: sudo vm_create –hostname vm_hostname_name_server vm_add -d vm_type=audio –no-daemon If you see a few blank lines, you may need to restart your VM and reboot.
The VM should now be running, and we can start playing our Python code.
Let’s make our Python script run a Python audio experiment If we start our virtual machine with: vm_start –vm_host name_server –vmtype=sound –no_daemon And then we add some files to the directory, like this: #!/usr/bin/env python import os,socket,sys,time import sys import socket,time sys.stdin = socket.AF_INET,socket.STREAM,socket “”This is a file that you will be using to communicate with the Python VM.””” def audio_experiment(file,path): print “Hello world!” os.system(“/home/pi/my_project/myproject.py”) sys.exit(0) os.environ[“AUDIO_HOST”] = “http://www.python.org/scripts/audio-experiment” # This is the python script you want running audio experiments with.
# You should add the name of your virtual machine, in this case: # vm_path=”/home/ pi/my-project/ ” print “This will start a listening server on port 3000.” sys.env.listen(8000,audio_experiments=audio_project) If you run our script with this command, we should see a prompt that says: Hello world!
At this point, we can click on the “Play” button, and our virtual music should start playing.
If it doesn’t, it means we don’t have enough audio data to run the experiment.
You could check that by pressing Ctrl+C on your keyboard, then typing in the name, and hitting enter.
We can also check the CPU usage by typing in CPU_HENRY, then hitting enter, and pressing enter.
If we can’t run the audio experiment because we can not find a file named “my_app.py” in the directory we added earlier, we need a different script to run that file.
Here’s how to add one to the file.
#!/bin/bash cd /home/ root # mkdir my_app # chmod 755 my_project.pyo cd my_ project.pyr