A power up sound for any sort of mechanical, high tech, or sci-fi charging up sound. Can also work for turning on jets and turbofans. This was recorded by a tascam dr-05 and is a printer cooling down reversed.
A reel-to-reel tapecorder with the record switch on. Time has not been kind to the device, and now a loud sine wave pulses through the speakers when recording with it.
Sounds like a power on sound. Made from a beep with a sine waveform (the hz of which increases), and bitcrushing it at 4 bits per sample and a sample rate of 40khz.
Hum machinery power synthetic machine sci-filoopable sound generated and modified in adobe audition. I wanted it to sound like a space ship hum or exotic power station.