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and expertise to developing two state-of-the-art systems for electronically recording and reproducing sound: one that employed conventional discs and…

September 1931, and his patent had the title "Improvements in and relating to Sound-transmission, Sound-recording and Sound-reproducing Systems". The application…

The most common digital media capable of reproducing surround sound music today are Super Audio CD, DVD, and Blu-ray, all of which are capable of playing…

and other electromagnetic interference (EMI). One advantage of AM radio signal is that it can be detected (turned into sound) with simple equipment.…

Intercommunication and Public Address Systems, Airborne 5835: Sound Recording and Reproducing Equipment 5836: Video Recording and Reproducing Equipment 5840: Radar…

telephone converts sound, typically and most efficiently the human voice, into electronic signals that are transmitted via cables and other communication…

issue with reproducing speech is that the microphone used to pick up the sound of an individual's voice may also pick up unwanted sounds, such as the…

can speak and be heard by the other party simultaneously. The earphone reproduces the speech of the remote party as the microphone transmits the speech…

for the user. Computer-based audiovisual equipment is often used in education, with many schools and universities installing projection equipment and…

1930 Operating Instructions for Synchronous Reproducing Equipment technical manual for Western Electric theatrical sound projector system; issued by ERPI…

record and reproduce sound were made during the latter half of the 19th century – notably Édouard-Léon Scott de Martinville's phonautograph of 1857 – and these…

there is no mid-range driver, so the task of reproducing the mid-range sounds is divided between the woofer and tweeter. When multiple drivers are used in…

to transmit high-fidelity sound over broadcast radio. FM broadcasting offers higher fidelity—more accurate reproduction of the original program sound—than…

Bibcode:1921Natur.106..650E. doi:10.1038/106650a0. Legat, V. 1862. "Reproducing Sounds on Extra Galvanic Way". accessed 26 March 2006. Friedrich Georg Wieck…

to electronic equipment. In 1957, the JETDS was formalized in MIL-STD-196. Computer software and commercial unmodified electronics for which the manufacturer…

patent for an "apparatus for transmitting vocal or other sounds telegraphically", after experimenting with many primitive sound transmitters and receivers…

loudspeakers, and related equipment. It increases the apparent volume (loudness) of a human voice, musical instrument, or other acoustic sound source or recorded…

and the team attempted to measure an amplitude and pitch, they were shocked when their equipment detected no audible sound. They concluded the sound being…

distortions vary with the direction of the sound source. This is caused by the geometry and sound-transmitting characteristics of the sinus, throat cavities…

historically, into a physical machine-readable form for use with other non-computerized equipment. It can be text, graphics, tactile, audio, or video…

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…