What was the standard operational speed for commercial gramophone records?
Answer
78 revolutions per minute (rpm)
Commercial records were typically played at a speed of 78 revolutions per minute, which was standard during the era of shellac discs.
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What technology specifically refers to a device playing music from a flat, rotating disc, as patented in 1887?What material did Emile Berliner utilize for the discs in his first successful patent application?What key advantage did Berliner's flat discs possess over Edison's cylinder format for mass manufacturing?What mechanical component rests in the continuous spiral groove and vibrates according to the sound modulation?What was the standard operational speed for commercial gramophone records?What acoustic function did the large external horn serve?How was the mechanism, including the rotating platter, typically powered before electronic amplification became standard?What material ultimately became the standard for creating commercial 78 rpm recordings?Which company was established in the US after Eldridge Johnson acquired the rights to Berliner's gramophone patents?What change in design allowed the gramophone to transition into a more integrated piece of domestic furniture in the early 20th century?What issue caused early recordings of the human voice to sometimes suffer from distortion?