This message was posted on behalf of Intel Corporation
What image are you using in the Edison? What USB sound card are you using? There’s a very useful guide to record Audio on the Edison using the arecord command. You can see more information here http://www.intel.com/content/www/us/en/support/boards-and-kits/intel-edison-boards/000018268.html .
Let us know if you’re able to record audio with this approach.
Thanks for the reply. The image version is 3.5, and I'm using an Uptech SA130 USB 2.0 audio card.
I am now using C to use fork() and output a kill signal in the parent process. This is able to accomplish the tasks I hope to have accomplished.