This example project implements a basic PCM WAVE generator, with methods to generate a sine tone. It is intended to be somewhat educational and introduce the concepts of IO, digital audio and also serve as a complete application open to modification by anyone hoping to dip their toes in digital sound.
The project is written in C# and has no third-party dependencies and targets the .NET Core 3.1 Framework, but should be compatible with many older versions of .NET.
I personally recommend using Visual Studio or Visual Studio Code.
If you have dotnet installed, you can run dotnet run Program.cs in a
terminal to output the sound.wav example.
The code consists of two main components, they are called upon in the Main
method.
This class can output a valid WAVE file given PCM data. It has an adjustable sample rate and could be expanded on to allow multiple streams (stereo).
This class contains static methods to generate raw PCM waveforms. It has a method to generate a sinusoidal wave at a given frequency, and additionally a similar method to generate a sinusoidal wave sweep between two target frequencies.
The class could be expanded on to generate different types of sound, such as noise or other waveform shapes.
The nature of this codebase is to provide a little insight into file formats and digital sound in a tangible and fun way. Please feel free to make improvements and corrections so long as they are in the spirit of keeping it easily digestible and useful for someone with limited experience.