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2. Dictation machine - Wikipedia

   en.wikipedia.org/wiki/Dictation_machine

   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.

3. Dictaphone - Wikipedia

   en.wikipedia.org/wiki/Dictaphone

   Dictaphone. Dictaphone was an American company founded by Alexander Graham Bell that produced dictation machines. It is now a division of Nuance Communications, based in Burlington, Massachusetts. Although the name "Dictaphone" is a trademark, it has become genericized as a means to refer to any dictation machine.

4. History of sound recording - Wikipedia

   en.wikipedia.org/wiki/History_of_sound_recording

   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 in ...

5. SoundScriber - Wikipedia

   en.wikipedia.org/wiki/SoundScriber

   SoundScriber is a dictation machine introduced in 1945 by The SoundScriber Corp. ( New Haven, Connecticut, United States). [1] It records sound with a groove embossed into soft vinyl discs with a stylus. [1] [2] [3] Similar competing recording technologies are the Gray Audograph and Dictaphone DictaBelt. The machine can record 15 minutes of ...

6. Sound recording and reproduction - Wikipedia

   en.wikipedia.org/wiki/Sound_recording_and...

   Sound recording and reproduction is the electrical, mechanical, electronic, or digital inscription and re-creation of sound waves, such as spoken voice, singing, instrumental music, or sound effects. The two main classes of sound recording technology are analog recording and digital recording. Acoustic analog recording is achieved by a ...

7. Electrical transcription - Wikipedia

   en.wikipedia.org/wiki/Electrical_transcription

   Sometimes called a broadcast transcription or radio transcription or nicknamed a platter, it is also sometimes just referred to as an electrical transcription, usually abbreviated to E.T. among radio professionals. Transcription discs are most commonly 16 inches (40 cm) in diameter and recorded at 33 + 1 ⁄ 3 rpm. That format was standard from ...