What was Emperor Hirohito's 1945 surrender broadcast known as in English?

Emperor Hirohito's 1945 surrender broadcast is known in English as the Jewel Voice Broadcast.

Its Japanese name, Gyokuon-hoso, literally refers to an imperial voice broadcast. Hirohito recorded the speech on August 14, 1945, and it was transmitted to the Japanese public at noon on August 15. The message announced acceptance of the Potsdam Declaration and instructed Japan's armed forces to cease fighting.

The recording used highly formal Japanese, and many listeners did not immediately recognize the word “surrender.” Hirohito referred to the war's course and the use of a new and most cruel bomb, but did not name Hiroshima or Nagasaki directly.

A small group of military officers attempted to prevent the recording from being broadcast during the Kyūjō incident. Their effort failed, and the speech reached the public. The broadcast announcement preceded the formal surrender ceremony aboard USS Missouri by 18 days.