Cannot use microphone feature of my A4Tech Webcam

I cannot use the microphone functionality of my A4 Tech JCSM Webcam, when I used it for video call the person whom I’m calling cannot hear anything from me. I have already reinstalled the driver for this webcam and also reinstalled the driver for my sound card hoping to fix this problem, I’ve done the configuration wizard for audio but still no sound is produced but I am not sure about this. Can someone guide me on how to make this work?
