running c code low latency

[PatB30]

Hello,

We are designing a project to acquire biomedical signals. For this project to suceed our program must run in real-time with approximately 5 msec of latency. In order to implement one of our algorithms we need to use C-code/MATLAB. We are using MATLAB to create a multidimensional array defined in size by the user based on previously acquired signals. When we tested how fast our C/MATLAB code ran (using the Timing Template VI that is included in the LabVIEW examples) we found that it ran between 9 and 10 msec. We were wondering if there were ways to use external code more efficiently.

[WNM]

How are you interfacing to the library? A code interface node to make calls to a DLL is generally very fast.

On the other hand, if you are using COM (ActiveX) calls, then it's going to be slow. More info is here.