It's portable to Linux and Windows at least. It won't run well in a virtual machine (including a ChromeBook) because it needs a GPU that can scroll the window fast enough.
There are 3 windows. One just shows the selected waveform. The others show an 8192-bucket FFT in red, a 1024-bucket FFT in green, and the active MIDI notes in blue. It's live, scrolling up at 93.75 pixels per second.
The QWERTY row becomes the white keys, and the number row becomes the black keys. F1 through F4 choose the type of sound. Left and right arrows change the octave in use; your speakers probably don't handle the full range very well. The program turns out to be a great speaker test, especially if you change the sound to a sine wave. It's also a great keyboard test; see how many keys you can hold down before your keyboard won't register any more. Individual colors in either window can be toggled with the 2x3 keypad that has Insert, Delete, Home, End, PgUp, PgDn. (the screenshot has green toggled off)
To make a trombone sound, first switch to a type of sound with lots of harmonics, like a sawtooth wave. Pick a low note, then find notes to line up well with the first two harmonics. Switch to the sine wave, and play all three of your chosen notes. For more of a clarinet sound, release the middle of the three that you have selected.
https://github.com/kevinacahalan/piano_waterfall
It's portable to Linux and Windows at least. It won't run well in a virtual machine (including a ChromeBook) because it needs a GPU that can scroll the window fast enough.
There are 3 windows. One just shows the selected waveform. The others show an 8192-bucket FFT in red, a 1024-bucket FFT in green, and the active MIDI notes in blue. It's live, scrolling up at 93.75 pixels per second.
The QWERTY row becomes the white keys, and the number row becomes the black keys. F1 through F4 choose the type of sound. Left and right arrows change the octave in use; your speakers probably don't handle the full range very well. The program turns out to be a great speaker test, especially if you change the sound to a sine wave. It's also a great keyboard test; see how many keys you can hold down before your keyboard won't register any more. Individual colors in either window can be toggled with the 2x3 keypad that has Insert, Delete, Home, End, PgUp, PgDn. (the screenshot has green toggled off)
To make a trombone sound, first switch to a type of sound with lots of harmonics, like a sawtooth wave. Pick a low note, then find notes to line up well with the first two harmonics. Switch to the sine wave, and play all three of your chosen notes. For more of a clarinet sound, release the middle of the three that you have selected.