I had robotic lung segmented surgery on March 6th and yes I also have had my voice affected. My throat has never been sore but, the first week after surgery, my voice was weak and high pitched. Now it's weak and gravelly sounding. I have enough volume to be heard with no problem but it takes an effort to speak and I always feel like I need to clear my throat. I spoke to my surgeon about it and he suggested it was due to the vocal cords being irritated by the tracheal tube during surgery. He also suggested the nerves that serve the vocal cords could have been irritated during surgery as another possibility. He said if it doesn't resolve he would refer me to an ENT specialist. I am 6 weeks post op now and it's still an issue. Sometimes my voice sounds clear but it doesn't last long.