In 1933, Edwin Howard Armstrong invented frequency modulation (FM) radio, revolutionizing the broadcasting industry. His innovations included key demonstrations and patents that significantly reduced static and interference, allowing for clearer sound quality in radio transmissions. This advancement not only enhanced the listening experience but also laid the groundwork for modern radio technology and influenced the development of music and culture in the 20th century.

The invention of FM radio by Edwin Armstrong improved mass media dissemination of news, literature, and poetry readings, aiding cultural shifts and the reach of wartime broadcasts influencing poets and audiences. The accessibility of poetry through radio transformed public engagement, allowing voices like Gwendolyn Brooks to reach wider audiences.