Oscilloscope using RX and C# Async CTP

In my last blog post I described the implementation of a simple ‘oscilloscope app’ in F#, as I wanted to see how the code would be structured using only F# idioms (http://taumuon-jabuka.blogspot.com/2012/01/visualising-sound.html )

My natural instinct would have been to implement it using the Reactive Extensions for .NET (RX Framework), but I first wanted to investigate a pure F# solution. This post describes an alternate RX implementation.

Similar to my last post, I’ll describe the code inside-out.

Creating the Observable

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Comparing implementations

For me, the RX solution is cleaner than the F# solution, and easier to follow. I did implement my F# solution in quite an imperative way though, and should have perhaps used AsyncSeq or mailbox processors, but as reading from the microphone is a push-based activity, none of those solutions would be as clean as RX (of course I haven’t covered using RX in F#). The F# version is much faster, and I’ll take a big more of a dig into performance in an upcoming blog post.