The microphone that recorded the sound you are hearing — and the one inside the phone in your hand — traces back to one man’s design. His name is James Edward Maceo West, and most people who use his invention every day of their lives have never heard it.
West, born February 10, 1931, in Prince Edward County, Virginia, co-invented the electret microphone with German-born physicist Gerhard Sessler at Bell Laboratories. The two filed their patent for the “electroacoustic transducer” in May 1962; it was granted in January 1964.
The numbers behind that patent are staggering. Electret technology is found in roughly 90 percent of the approximately two billion microphones manufactured each year, according to the National Inventors Hall of Fame — in phones, laptops, hearing aids, baby monitors, recording equipment and toys. The design’s genius is a material that holds its electric charge for decades without a battery, making microphones small, cheap and durable enough to put nearly everywhere.
The work began around a 1957 summer internship at Bell Labs, where West worked on an earphone project whose charge failed after about six months — a failure that ultimately led him back to Bell and into the collaboration with Sessler.
West’s curiosity started early. “If I had a screwdriver and a pair of pliers, anything that could be opened was in danger,” he has said of his childhood. He was born at the family home his grandfather built, because the hospital in Farmville admitted only white patients. His mother, Matilda, worked as one of the Langley “human computers” later celebrated as the Hidden Figures. West has said that seeing other Black scientists at Bell Labs was among his reasons for joining.
Over a roughly 40-year career at Bell Labs, West earned more than 60 U.S. patents and more than 200 foreign patents. (An earlier, widely repeated figure of 47 U.S. patents appears in older profiles; Johns Hopkins’ current figure is used here.) He retired from Bell in 2001 and joined Johns Hopkins University, where he is now professor emeritus of electrical and computer engineering and mechanical engineering.
The honors have followed the invention. West and Sessler were both inducted into the National Inventors Hall of Fame in 1999. West was elected to the National Academy of Engineering in 1998, received the National Medal of Technology and Innovation in 2006, and shared the Benjamin Franklin Medal with Sessler in 2010. West, now 95, is also listed among the inductees of the Black Inventors Hall of Fame, whose second annual induction ceremony was scheduled for July 16, 2026, at the University of Chicago.
The next time a phone rings, a hearing aid catches a grandchild’s voice, or a video plays with the sound crisp and clear, the odds are about nine in ten that James West’s invention is doing the work.
Drafted by News Observed Editorial AI, human reviewed and published.