What was the radio broadcast of Emperor Hirohito's 1945 surrender message commonly called?

Emperor Hirohito's 1945 surrender message was commonly called the Jewel Voice Broadcast.

The Japanese name Gyokuon-hōsō literally refers to a broadcast of the emperor's voice, using imagery associated with something precious or jewel-like. The English phrase became widely used later to describe the historic radio message.

Hirohito recorded the speech at the Imperial Palace on August 14, 1945. Technicians made two recordings because the first attempt was considered too soft. The second recording became the official version and was broadcast the next day.

The message announced acceptance of the Potsdam Declaration rather than stating the surrender in a simple direct phrase. That indirect wording, combined with formal classical Japanese, caused some listeners to miss the announcement's meaning. A radio announcer clarified afterward that Japan had surrendered to the Allies.