baby and her name

Are any of your babies not responding to their names yet? My little girl giggles with us and smiles at us, but she does not respond when we call her name. Is there a special trick I should be doing? She makes many noises and chatters with us, will sit on the floor and play with her toys alone for a long time, and we sit with her and play, but I need a little piece of mind. She'll be 10 months in Tuesday. Picture because so cute!