What is the usual English name for Hirohito's August 15, 1945 surrender radio address?

Hirohito’s August 15, 1945 surrender radio address is usually called the Jewel Voice Broadcast.

The name is an English rendering of Gyokuon-hoso, the Japanese term for the broadcast. “Gyokuon” refers to the emperor’s voice in an honorific and literary way, while “hoso” means broadcast. The recording carried the Imperial Rescript on the Termination of the War.

The address was not a live speech. Hirohito recorded it on August 14, and NHK transmitted the recording at noon on August 15. The use of classical court language, the emperor’s unfamiliar voice, and poor audio quality made the message hard for many listeners to follow.

The broadcast became a landmark in Japanese history because it was the first time the Japanese public generally heard the voice of a reigning emperor. It announced acceptance of Allied surrender terms, while the formal Instrument of Surrender was signed later aboard USS Missouri.