"Stenotyping" Natural Recordings by Native Speakers
Stenotyping refers to the process of creating prints of hand-written or typed documents by transcribing them onto a smooth or slightly tacky surface in ink. However, I believe you may be referring to "stenotyping" as in the process of pouring molten metal into a mold to create type or "stamping", but I think it's more likely that you are referring to the machine-based process known as "stencil typing" which is an outdated typing technology that involved creating characters on a stencil, used for preparing documents for mass reproduction.
A stenotype machine is a specialized typewriter-like device used to capture spoken language in real-time, typically by court reporters and closed captions providers. It has a shorter keyboard compared to a standard typewriter, with up to 22 keys, each one able to produce multiple letters or symbols, allowing for the operator to capture speech at a much faster rate than regular typing. The stenotype machine is an essential tool for professionals in the legal and media industries who requires accurate transcriptions of spoken words.