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The recording device was concealed on a person Thatcher had previously approached for help in the crime. [citation needed] Electronic bugging devices were found in March 2003 at offices used by French and German delegations at the European Union headquarters in Brussels. Devices were also discovered at offices used by other delegations.
The Yak Bak WarpR provided users with the ability to alter the recording via a pitch dial that would speed up or slow down the sound, thereby making the voice sound higher or deeper. This model was more popular than previous ones as the novelty of voice recording became more enticing once users could "warp" their voices. This "warping" option ...
A few years earlier, devices using phonographic grooved tape like the Tefifon were produced by Tefi for special purposes, like the military, and were designed for voice recording. Prior to the Tefifon's introduction, Tefi had introduced a device capable of recording and playback under the name "Tefiphon" (note the alternate spelling) and ...
The possibility of performing forensic audio analysis depends on the availability of audio recordings made outside the boundaries of a recording studio. The first portable magnetic tape recorders appeared in the 1950s and soon these devices were used to obtain clandestine recordings of interviews and wiretaps, as well as to record interrogations.
A personal mono device as science fiction (Albert Robida, 1894) A portable audio player is a personal mobile device that allows the user to listen to recorded audio while mobile. Sometimes a distinction is made between a portable player, battery-powered and with one or more small loudspeakers, and a personal player, listened to with earphones.
A recorder is a device that records some signal. Many measuring instruments also record the quantities they measure; see Category:Measuring instruments . Subcategories
Acoustic analog recording is achieved by a small microphone diaphragm that can record sound waves on a phonograph (in which a stylus senses grooves on a record) or magnetic tape. The first practical sound recording and reproduction device was the mechanical phonograph cylinder, invented by Thomas Edison in 1877 and patented in 1878. [1]
MIDI music has also been used for similar reasons, but some data is lost in the conversion to MIDI from any other format, unless the music was written with the MIDI standards in mind, which is rare. Digital audio formats such as WAV, mp3, and ogg are used when the audio itself is part of the analysis. Lossy formats such as mp3 and ogg work well ...
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