After the death of Bagdasarian in 1972 , the characters ' voices were performed by his son Ross Bagdasarian , Jr. and the latter 's wife Janice Karman in the subsequent incarnations of the 1980s and 1990s .
The characters were revived in the 1980s and 1990s , with the voices being performed by Ross Bagdasarian , Jr. and his wife Janice Karman .