Post by duddex on Dec 19, 2021 16:51:58 GMT
The polyramp module (https://github.com/wonkystuff/grains_polyramp) is one of my favourite Grains modules. It is a drone machine comprising 8 stacked sawtooth oscillators.
When I looked at the source code, I found this comment at the end of the file
That means that the actual drone sound comes from output "OUT". But there is an additional output of a square wave on the "D" output.
I made a short video which shows the combination of the drone sound and the square wave:
(there are some weird artefacts in the sound of the video - actual sound is much cleaner)
As this is open source, it is not really a hidden feature. But it is not so obvious either
When I looked at the source code, I found this comment at the end of the file
...
// If the new value of phase is smaller than it was, then we have completed a ramp-cycle, so
// change the state of output 2 - this gives us a square wave an octave down from output 1.
if (accum[0].phase < oldPhase) {
PORTB ^= 0x01; // Sub oscillator square on the D output
}
...That means that the actual drone sound comes from output "OUT". But there is an additional output of a square wave on the "D" output.
I made a short video which shows the combination of the drone sound and the square wave:
(there are some weird artefacts in the sound of the video - actual sound is much cleaner)
As this is open source, it is not really a hidden feature. But it is not so obvious either
