"Junk" in the output signal when non-ascii input signal is provided

[Maharshi-Pandya]

• When non-ascii characters i.e. unicode characters or emojis, are provided as an input, the output signal gives out junk characters instead, for some reason.

Example highlighting the issue...(Tested in default settings)

Here's the output signal...

[yashrajkakkad]

Hi @Maharshi-Pandya, as our objective was only to demonstrate digital communication techniques, we only had the ASCII character set in our mind. However, feel free to modify the code to support Unicode (I am sure its not very hard) and send a Pull request. We'll gladly review and approve if seems good. 😄