What is the usual English name for Emperor Hirohito's 15 August 1945 surrender broadcast?

Emperor Hirohito's 15 August 1945 surrender broadcast is usually called the Jewel Voice Broadcast. Its Japanese name, Gyokuon-hōsō, refers to the emperor's voice being heard over radio by the Japanese public.

The recording announced that Japan had accepted the terms of the Potsdam Declaration. Hirohito used formal classical Japanese and did not simply say, in everyday language, that Japan had surrendered. Many listeners found the speech difficult to understand, partly because the emperor's voice had rarely been heard publicly.

The recording was made on 14 August and broadcast at noon on 15 August Japan time. Palace officials concealed and protected the record during an attempted military coup known as the Kyūjō incident. The broadcast announced the decision, while the formal legal surrender followed aboard USS Missouri on 2 September.