Video game characters don't have voices when you should on certain games

I’ve been using my razer ripsaw capture card and I noticed that on several games characters in the game don’t have sound or are very faint. I’ve made sure everything was set up correctly. I can hear all other sounds however no voices. Any idea as to what to do next would be awesome. I’ve tried un plugging and re plugging and even switched out HDMI cord to see if that works and no luck either.