Update Spectogram.py

[madhupashish]

The updated code includes several improvements to enhance readability, maintainability, and robustness. Variable names have been improved for better readability, making it easier to understand the code at a glance. The logic has been encapsulated into modular functions, which provides clarity and promotes reusability. Error handling has been added for PyAudio initialization to manage potential issues during the setup process. Proper handling of subprocesses ensures that visualizer processes are correctly managed, preventing any orphaned processes. Additionally, comments and documentation have been added to explain the purpose of each function and block of code. These changes collectively make the code more readable, maintainable, and robust.

[Soumya-Kushwaha]

Please avoid raising PRs without being assigned on issues. @madhupashish