Antal Dorati, the noted Hungarian-born composer and conductor, died Sunday in Bern, Switzerland. He was 82. Dorati was music director of the Ballet Russe de Monte Carlo from 1933 to 1939 and his conducting posts included Budapest's Royal Opera and the Ballet Theater of New York. He was principal conductor of the British Broadcasting Corp. Symphony Orchestra from 1962 to 1966 and of the Stockholm Philharmonic from 1966-74. Dorati was music director of the Washington National Symphony Orchestra from 1970 to 1977, principal conductor of Britain's Royal Philharmonic Orchestra from 1975-78, and remained as conductor laureate thereafter. He was music director of the Detroit Symphony from 1977 to 1981. Dorati made more than 500 symphonic recordings.