Minimal WASAPI reference implementation. Runnable console application contained in a single function and laid out in a linear, step-by-step fashion. No modern C++ / OOP / obscuring cruft. Produces a steady sine wave sound.
(This is a re-post of the same gist I posted a few years earlier, simply due to me wanting the Minimal D3D11 series to be listed contiguously and it's not possible to hide or rearrange gists).