AirStep is a music production application designed for the leap motion controller.
If you don't have it, you can always use your mouse and keyboard.

This application is composed of three parts:

• Performer
• Sequencer
• Synthesizer

To switch from one part to another one, use the "swipe" gesture of your leap motion, or use the left and right arrow key of your keyboard.

Performer

The performer is a live drum player.
To use it, place your hands in front of you and tap the rectangles in the bottom. Each finger will trigger a different drum sound.

You can also use your keyboard as drum pads by pressing the keys from "Q" to "M" (azerty).

To record your drum pattern in the sequencer, activate the "Overdub" button by clicking on it with your index finger, your mouse or by pressing the "Enter" key on your keyboard.

• Metronome
• Overdub

To help you to stay in the rhythm, you can activate the metronome next to the "Overdub" button with your index finger, your mouse or by pressing the "Space" key on your keyboard. Once the "Overdub" button is red, every triggered drum sound will be recorded.

To change the soundbank, use the "circle" gesture of your leap motion, or use the up and down arrow key on your keyboard.

Sequencer

The sequencer lets you create and edit your drum patterns.

Each arrow corresponds to a different sound which are those of the performer part.
Each column corresponds to 1/16th of a bar (1 bar = 4 beats).

To add a note with your leap motion, push your index finger in the direction of the screen until it fills the colored square at the desired place.

To change the BPM, use the "circle" gesture of your leap motion, or use the up and down arrow key on your keyboard. A clockwise direction will increase it, an anti-clockwise direction will decrease it.

You can temporarily mute each sound with the "mute" buttons located in the left side of the grid, and you can delete each arrow with the crossed red square located in the right side of the grid.

• Mute
• Erase

Four playing modes are available for the sequencer. Use the yellow looping icons located in the left side by clicking on it with your leap motion, your mouse or by pressing the A, Z, E and R key on your keyboard (azerty).

Synthesizer

This 3-oscillator monophonic synthesizer include multiple sound presets to let you play basslines and leads in live, with your leap motion, your mouse and your keyboard.

The left section controls the filter. Place your left hand over the filter zone.
Up/down movement controls the frequency, left/right movement controls the emphasis.

To control the filter without a leap motion, click and move your mouse in this zone.

The right section allows you to control the pitch.
Place your right hand over the piano keyboard to play the notes.
Rotate your right hand to the left or to the right to change the octaves.

To play notes without a leap motion, press the keys from "Q" to "K" on your keyboard (azerty). To change the octaves, press the "W" and "X" keys.

To change the sound presets, use the "circle" gesture of your leap motion, or use the up and down arrow key on your keyboard.