App idea: aetherphone - a musical theremin on your phone.
"Turn your phone into a robust musical instrument."
I am an artist and can do UI if a developer wants to tackle this. A theremin can be described
here:
Here is a demo screenshot I made:
in this demo picture it is showing the "R" reverb filter being scrubbed to 54% the text on screen quickly fades away once the affected button is released.
How to play:
The screen will be able to operate with the vertical axis as pitch and the horizontal axis as volume. Optionally these axis can be switched by the user in "settings". Also you can have a split screen mode for two independent instruments OR spit screen with pitch in one window and volume in another is so desired. If the latter sound will only come out when both fingers contact the phone.
Waveshape Selection Circle:
Toggles sine, triangle and square waveforms.
Filters:
You have three filter slots that you can customize with 15 different effects. Swap out filters in the settings mode.
• Tap a slot to toggle it on and off while in play.
• Touch and drag side to side on a slot to change the intensity of the effect. While you scrub a large number shows up in the middle of your screen to show you what its value is.
Loop:
Tap loop once and it inverts. While it is inverted it is recording.
Tap a second time and the loop is stored and a number comes up at the top of the screen 1-9.
Tap the numbers to toggle on and off loops. to clear a number drag the number to the settings gear at the bottom of the page. Loop auto snaps to the closest logical length of measure (guided by bpm and time sig settings)
BPM & time signatures can be set by scrubbing left and right. The text pulses gently to the beat and the time sig pulses to the appropriate scale.
Particle effects change under your finger depending on how long you have held a ante and how quickly your finger moves:
Tap a note/vol and a ripple happens like a drop of water.
Sustain a note and you will get many concentric rings fading from that spot.
Zip from one note to another and a line will appear to tell you were you came from. it will fade in one a couple measures.