Ceenth is a Windows-based software synthesizer application built with C# and WPF that generates audio in real-time. It allows users to create and manipulate sounds through various waveform types, filters, and effects.

The software solves the problem of needing specialized hardware for sound synthesis by providing a software alternative that can run on standard Windows computers. It offers a visual interface for creating and modifying sounds without requiring deep technical knowledge of audio programming.

Musicians, sound designers, and music enthusiasts would use Ceenth to create custom sounds, experiment with audio synthesis techniques, and integrate it into their music production workflow. The application provides both real-time performance capabilities and the ability to save and recall sound presets.

The application works by generating audio waveforms mathematically using NAudio library, allowing users to select between different waveforms (sine, square, sawtooth, triangle). It includes a polyphonic engine to handle multiple notes simultaneously, a low-pass filter for tone shaping, effects like tremolo and vibrato, and an oscilloscope for visualizing the generated waveforms. User presets are stored in an SQLite database.

The codebase shows some patterns that indicate this was developed by a student (as mentioned in the README for a Programming II project). There's a mix of Portuguese and English comments, suggesting the developer is Portuguese. The MIDI functionality is marked as not implemented, indicating this is still a work in progress. The code is generally well-structured following MVVM patterns.