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Upsweep is an unidentified sound detected on the American NOAA's equatorial autonomous hydrophone arrays. This sound was present when the Pacific Marine Environmental Laboratory began recording its sound surveillance system, SOSUS, in August 1991. It consists of a long train of narrow-band upsweeping sounds of several seconds in duration each.
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Trigger a notification to one or several registered user(s) you are replying to in a discussion without displaying any text. Template parameters [Edit template data] Parameter Description Type Status Username 1 The name of a user that you want to notify User required Additional username 2 The name of an additional user you want to notify User optional Additional username 3 The name of an ...
Ping measures the round-trip time for messages sent from the originating host to a destination computer that are echoed back to the source. The name comes from active sonar terminology that sends a pulse of sound and listens for the echo to detect objects under water. [1] Ping operates by means of Internet Control Message Protocol (ICMP) packets.
Vanishing quantum discord is a criterion for the pointer states, which constitute preferred effectively classical states of a system. [2] Quantum discord must be non-negative and states with vanishing quantum discord can in fact be identified with pointer states. [10]
iTunes Ping, or simply Ping, was a software-based, music-oriented social networking and recommender system developed and operated by Apple Inc. It was announced and launched on September 1, 2010, [2] as part of the tenth major release of iTunes. [3] The service launched with 1 million members [4] in 23 countries. [5]
A ping of death is a type of attack on a computer system that involves sending a malformed or otherwise malicious ping to a computer. [1] In this attack, a host sends hundreds of ping requests with a packet size that is large or illegal to another host to try to take it offline or to keep it preoccupied responding with ICMP Echo replies.
Pink noise is still used by audio system contractors [64] and by computerized sound systems which incorporate an automatic equalization feature. [ 65 ] In manufacturing, pink noise is often used as a burn-in signal for audio amplifiers and other components, to determine whether the component will maintain performance integrity during sustained ...