Leo Beranek

Leo Beranek was an eminent American acoustical engineer, educator, and entrepreneur whose pioneering work fundamentally shaped the fields of architectural acoustics, noise control, and broadcasting. A co-founder of the influential consulting firm Bolt, Beranek and Newman (BBN), his research and designs were integral to iconic venues like Philharmonic Hall at Lincoln Center and the United Nations General Assembly Hall. His leadership extended to transforming Boston's classical radio station WCRB and serving as president of both the Acoustical Society of America and the American Academy of Arts and Sciences.

Early life and education

Born in Solon, Iowa, he displayed an early aptitude for engineering, building a crystal radio as a youth. He earned his bachelor's degree in physics and mathematics from Cornell College in Mount Vernon, Iowa in 1936. Pursuing graduate studies at Harvard University, he worked under the guidance of renowned professors like Frederick Vinton Hunt at the Harvard Underwater Sound Laboratory, earning his Ph.D. in communications physics in 1940. His doctoral research on electroacoustics and microphone design laid a critical foundation for his future career in acoustical engineering and measurement.

Career in acoustics

During World War II, he directed Harvard's Electro-Acoustic Laboratory, conducting vital research on aircraft communication systems and cockpit noise for the U.S. War Department. In 1948, he partnered with Richard Bolt and Robert Newman to establish Bolt, Beranek and Newman, which rapidly became a world-leading acoustical consulting firm. His seminal textbook, Acoustics, published in 1954, became a standard reference. He led the acoustical design for major projects including the UN General Assembly Hall in New York City and the first Kresge Auditorium at the Massachusetts Institute of Technology. His controversial work on the original Philharmonic Hall, though later revised, propelled advanced research in concert hall design.

Contributions to broadcasting

In 1958, seeking to improve high fidelity music broadcasting, he purchased Boston station WCRB. As president and technical director, he transformed it into a premier FM station, pioneering the use of stereophonic transmission and setting new standards for audio quality in radio. He sold the station in 1972 but remained a respected figure in the broadcasting industry. His expertise also contributed to the design of studios for the CBS and ABC television networks, influencing the technical quality of network production facilities.

Leadership in professional societies

He served as president of the Acoustical Society of America from 1954 to 1955, helping to guide the discipline's post-war expansion. His leadership was further recognized with his election as president of the American Academy of Arts and Sciences from 1989 to 1994, where he advocated for interdisciplinary scholarship. Throughout his career, he received numerous honors, including the ASA's Gold Medal and the National Medal of Science, awarded by President George W. Bush in 2003 for his contributions to acoustics and noise control.

Later life and legacy

After retiring from Harvard University, where he had been a professor and director of its Electro-Acoustic Laboratory, he remained an active consultant and author. He chronicled the history of Bolt, Beranek and Newman and his experiences in acoustics in several books. He passed away in Westwood, Massachusetts in 2016. His legacy endures through the enduring influence of his textbooks, the iconic architectural spaces he helped design, and the continued impact of the companies and institutions he helped build and lead in the fields of acoustical engineering and audio technology.

Category:American acoustical engineers Category:National Medal of Science laureates Category:Harvard University alumni