What was the 1945 Japanese surrender radio broadcast called in Japanese?

The 1945 Japanese surrender radio broadcast was called Gyokuon-hoso.

Gyokuon-hoso literally means broadcast in the Emperor’s voice. It refers to Emperor Hirohito’s recorded address, which was transmitted to the Japanese public at noon on August 15, 1945. The recording was made the previous day after the emperor agreed that Japan should accept the Allied terms.

The broadcast was historically significant because ordinary Japanese people generally had not heard the emperor speak. Hirohito used highly formal classical Japanese, and the poor quality of the recording made the message difficult for many listeners to understand. The speech also used indirect language rather than a simple declaration of surrender.

The announcement followed a failed attempt by military hardliners to prevent the recording from being broadcast. Gyokuon-hoso is sometimes confused with the Japanese Instrument of Surrender, but the broadcast was an announcement to the public; the legal surrender document was signed weeks later.