.NET library for pur tones

I need a .NET CLASS in C# that will play pure tones at various frequencies. .wav files will not work for my paticular application. A C++ dll would work but must have a clear and consise way to call it from C# ie CreateTone(int Frequency, string channel,duration) CreateBeep(int Frequency, string channel, int duration, int repeat) AdjustToneVolume(int activetone thread, int volume) AdjustBeepVolume(int activebeep thread, int volume) or something like that The tone generator needs the following: 1. Volume Control both right and left channels and must be fluid so that when the volume changes it does not chop or make the sound card chirp 2. Ability to play only on left channel of sound card 3. Ability to play only on right channel of sound card 4. Ability to play both right and left channels at same time. 5. Ability to gradually increase tone from 0Hz to 8000Hz Hz in incriments of 10 Hz provide feedback as to what Hz the tone is being played at. 6. While tone is playing I need the ability to change the volume of that tone via code so it will need to be multithreaded. 7. Ability to change the duration of the tone. (beep or beeeeeeeeeeeep) 8. Ability or option to repeat the above beep for a number of times or produce that beep continously I found a C++ program that does alot of the things I need it to do .. but I dont' know how to convert it to C# the file can be found at [login to view URL] it is a morse code project but it does have most of the functionality that I would need. As far as I could tell there is no way to adjust the volume while the tone is playing. Also I could see no way to make it play just on the right or left channels. Each procedure will be fully documented in code An example application will be included. Note: I have had several questions about whether you will be providing a program or an API. (You will be providing an API so that I can use it in my own programs that I write in C#). You will also provide a sample application in C#. This tone funcionality is not built into .NET so most of the replies have suggested that they would code in C++ and provide me with a dll. The coder that this is awarded to will need to provide an API/dll that can be easily callable via .NET and C#. If a C++ dll is provided the coder will also need to provide a C# library that interfaces with the C++ dll so that I can easily call the dll. ## Deliverables Complete and fully-functional working program(s) in executable form as well as complete source code of all work done. Complete copyrights to all work purchased. ## Platform .NET C# Library or API ## Deadline information Coder must have excellent spoken and written english so that I can understand them.