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Harvard sentences. The Harvard sentences, or Harvard lines, [ 1] is a collection of 720 sample phrases, divided into lists of 10, used for standardized testing of Voice over IP, cellular, and other telephone systems. They are phonetically balanced sentences that use specific phonemes at the same frequency they appear in English.
Mixed-excitation linear prediction ( MELP) is a United States Department of Defense speech coding standard used mainly in military applications and satellite communications, secure voice, and secure radio devices. Its standardization and later development was led and supported by the NSA and NATO. The current "enhanced" version is known as MELPe .
Pulse-code modulation ( PCM) is a method used to digitally represent analog signals. It is the standard form of digital audio in computers, compact discs, digital telephony and other digital audio applications. In a PCM stream, the amplitude of the analog signal is sampled at uniform intervals, and each sample is quantized to the nearest value ...
Software performance testing. In software quality assurance, performance testing is in general a testing practice performed to determine how a system performs in terms of responsiveness and stability under a particular workload. [ 1] It can also serve to investigate, measure, validate or verify other quality attributes of the system, such as ...
Specific Area Message Encoding (SAME) is a protocol used for framing and classification of broadcasting emergency warning messages. It was developed by the United States National Weather Service for use on its NOAA Weather Radio (NWR) network, and was later adopted by the Federal Communications Commission for the Emergency Alert System, then subsequently by Environment Canada for use on its ...
The March of Time is an American radio news documentary and dramatization series sponsored by Time Inc. and broadcast from 1931 to 1945. Created by broadcasting pioneer Fred Smith and Time magazine executive Roy E. Larsen, the program combined actual news events with reenactments. The "voice" of The March of Time was Westbrook Van Voorhis.
A radio format or programming format (not to be confused with broadcast programming) describes the overall content broadcast on a radio station. [ 1] The radio format emerged mainly in the United States in the 1950s, at a time when radio was compelled to develop new and exclusive ways to programming by competition with television. [ 2]
Announcer's tests originated in the early days of radio broadcasting, around 1920. The tests involved the pronunciation of difficult words, as well as retention, memory, repetition, enunciation, diction, and using every letter in the alphabet a variety of times. [ 1] An excerpt of one early test, forwarded from Phillips Carlin, who was known ...