Hi, I am working on a little toy project related to controlling graphics display based on data from the computer microphone. I am basing the whole thing on concepts from game programming, so I have a main loop which reads inputs, updates the world state and generates outputs. As part of inputs there is microphone. I read data from it using the pulse-simple library. The "simpleRead" function blocks if there is not enough data available so I can't use it directly in the main loop or I risk delays. So I figured I'll use a separate thread to read from the mic and write data into a TChan. The main loop in separate thread then can read from the TChan as needed and test for availability of data to avoid delaying the main loop. Here is my current code: http://lpaste.net/147522 The data is written into TChan in the "handleMic" function and read from the TChan on line 85. The problem I have is that the TChan never seems to contain any data when I read from it and that confuses me. Why? Does anyone see where is my problem? Many Thanks Martin