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Researchers Restore the First Recording of Computer-Generated Music (bbc.co.uk)
BoxRec writes: Alan Turing was part of a team who created the earliest known recording of music produced by a computer. It starts with a few bars of God Save the Queen, a snippet of Baa Baa Black Sheep and then Glenn Miller's swing hit In The Mood. The recording was captured by the BBC in the Autumn of 1951 on a 12-inch (30.5cm) acetate disc. But when Professor Jack Copeland of the University of Canterbury in Christchurch and composer Jason Long discovered the disc, the audio on the disc had been distorted. In a blog post for the British Library, Copeland and Long said it "gave at best only a rough impression of how the computer sounded." BBC News reports: "By analyzing the recording, Copeland and Long realized it was playing at the wrong speed, possibly as a result of the recorder's turntable running too quickly as the acetate was cut. As they knew the notes the computer was actually capable of playing, the pair were able to calculate exactly by how much the recording needed to be speeded up in order to exactly match the sound made by the Ferranti Mark 1. They also removed extraneous noise from the recording -- though not the engineer's voice. 'It was a beautiful moment when we first heard the true sound of Turing's computer,' Copeland and Long wrote. Now anyone can hear it in all its somewhat ramshackle glory."
Computers at the time used many analog parts. The Cello sound is because of the burst of power to create the note causing an attack sound. Similarly how the string is pulled a bit further by the bow until its tension outstrips the friction from the bow and starts to vibrate. combined with the sawtooth wave which is similar to a string instrument or a brass horn.
If something is so important that you feel the need to post it on the internet... It probably isn't that important.
I was expecting a simple sine wave or harsh square wave sound, but the sound is surprisingly pleasant
Indeed it is! I did a stream rip and looked at the waveforms. Nothing especially obvious springs to mind. There's probably a deep analoge hack using valves now long lost to the midsts of time to make a digitally controlled oscillator with 1 pentode, 3 condensors and a bit of string.
SJW n. One who posts facts.
Then we should also force 50% of marriages to be gay, right?