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n 2014, the Shure Unidyne was awarded the prestigious Milestone Award from the Institute of

Electrical and Electronics Engineers.

Here is Shure’s submission to the IEEE Committee, written by Shure Historian Michael Pettersen.

What is the historical signicance of the work (its technological, scientic, or social importance)?

The year 2013 marks the 75th anniversary of Ben Bauer’s invention of the Uniphase principle

while working for Shure Brothers Incorporated, a microphone manufacturer in Chicago. As a

newly-graduated engineer, the 25 year-old Bauer developed an acoustical method that produced

a directional microphone using only one microphone element. The Uniphase principle paved the

way for the design of the Shure Unidyne Microphone. Introduced in 1939, the Shure Unidyne is

arguably the most recognized microphone in the world.

Benjamin Bauer (originally Baumzweiger) was born in Odessa, Russia, in 1913. His family ed

Russia after the 1917 revolution and relocated to Havana, Cuba. At the age of 17, and speaking

little English, Bauer moved to New York City to attend the Pratt Institute. After obtaining an

Associate Industrial Engineering degree, Bauer matriculated at the University of Cincinnati,

pursuing an Electrical Engineering degree. Bauer chose a ve-year work/study program and

began working as an intern at Shure. When he graduated in 1937, he joined Shure full time as

a transducer development engineer. It was the start of a distinguished career in acoustics and

audio that included more than 100 patents.

IEEE MILESTONE AWARD