> what "on for 1% of the time" means It's a description of the synthesised waveform. There's no envelope and sample rate isn't particularly meaningful as there

> what "on for 1% of the time" means It's a description of the synthesised waveform. There's no envelope and sample rate isn't particularly meaningful as there are no samples or recording involved. The wave is a pulse/square wave -- 1 bit. The signal goes high/"on" at a frequency of e.g. 440 Hz. The 1% refers to the duty cycle[0] -- this is expressed as a percentage of the wave period (1 / 440 Hz) that the signal remains high. So every cycle of a 1% pulse wave, for 0.01 / 440 seconds the signal is high, then 0.99 / 440 seconds the signal is low. Changing the duty cycle can change the character of the tone, but the note/frequency is unaffected. [0] https://en.wikipedia.org/wiki/Duty_cycle https://en.wikipedia.org/wiki/Duty_cycle