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Francis Blake was born in Needham, Massachusetts on December 25, 1850, the son of Caroline Burling (Trumbull) and Francis Blake, Sr. [1]. In 1879, he invented a carbon microphone for use in the telephone, and patented [2] [3] [4] it shortly after Thomas Edison invented a similar microphone that also used carbon contacts.
An electret microphone is a type of condenser microphone invented by ... computer, PDA and headset microphones were electret types. ... the microphone and external ...
Together with James E. West, he invented the foil electret microphone [2] at Bell Laboratories in 1962. Together with Dietmar Hohm, he invented the MEMS microphone, also known as the silicon microphone in 1983. [3] [4]
An electret microphone is a microphone whose diaphragm forms a capacitor (historically-termed a condenser) that incorporates an electret. The electret's permanent electric dipole provides a constant charge Q on the capacitor.
Along with Gerhard Sessler, West invented the foil electret microphone in 1962 while developing instruments for human hearing research. [7] [8] Compared to the previous condenser microphones, the electret microphone has higher capacitance and does not require a DC bias. [9]
An audio interface is a piece of computer hardware that allows the input and output of audio signals to and from a host computer or recording device. Audio interfaces are closely related to computer sound cards , but whereas sound cards are optimized for audio playback an audio interface is primarily intended to provide low-latency analog-to ...
James West invented technology that 90% of modern-day microphones use. He attended Black Panther meetings in college and advocates for minorities in STEM.
A wireless microphone, or cordless microphone, is a microphone without a physical cable connecting it directly to the sound recording or amplifying equipment with which it is associated. Also known as a radio microphone , it has a small, battery-powered radio transmitter in the microphone body, which transmits the audio signal from the ...