Miyamoto started his oboe lesson at Toho Gakuen High School with Seizo Suzuki, and began his worldwide career at the age of 18, when he moved to Germany to study with Helmut Winschermann.
He continued to live there until the year 2000, in which he returned to Japan.
He has released several albums, not only in classical but also in pop fields like jazz, film music.
Miyamoto is a professor of the Tokyo College of Music.
He has announced his retirement as a professional oboist and performed his last concert at the end of March 2007 and now active as a conductor.