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Dictation machine. Transcribing dictation with a Dictaphone wax cylinder dictation machine, in the early 1920s. Note supply of extra wax cylinders on lower part of stand. A dictation machine is a sound recording device most commonly used to record speech for playback or to be typed into print. It includes digital voice recorders and tape recorder .
4.0. 3× optical zoom, 4× digital zoom. Olympus Europe, archived from the original on 3 December 2008, retrieved 11 December 2008. Olympus C-5000 Zoom. 5.0. 3× optical zoom, 4× digital zoom. 2003. Olympus America, archived from the original on 17 October 2007, retrieved 11 December 2008.
There are two types of flight recording devices: the flight data recorder ( FDR) preserves the recent history of the flight through the recording of dozens of parameters collected several times per second; the cockpit voice recorder ( CVR) preserves the recent history of the sounds in the cockpit, including the conversation of the pilots.
Digital audio is a representation of sound recorded in, or converted into, digital form. In digital audio, the sound wave of the audio signal is typically encoded as numerical samples in a continuous sequence. For example, in CD audio, samples are taken 44,100 times per second, each with 16-bit sample depth. Digital audio is also the name for ...
Audacity is a free and open-source digital audio editor and recording application software, available for Windows, macOS, Linux, and other Unix-like operating systems. [ 4][ 5] As of December 6, 2022, Audacity is the most popular download at FossHub, [ 8] with over 114.2 million downloads since March 2015. It was previously served by Google ...
Ring-and-spring microphones, such as this Western Electric microphone, were common during the electrical age of sound recording c. 1925–45.. The 'second wave' of sound recording history was ushered in by the introduction of Western Electric's integrated system of electrical microphones, electronic signal amplifiers and electromechanical recorders, which was adopted by major US record labels ...