Web Audio Synthesizer with MIDI

A browser based polyphonic synthesizer which can be played by connecting a MIDI device via USB or using the supplied virtual keyboard. Functions include saving a chord, note repeat and octave up/down.

Devices

MIDI compatible devices that are connected will be selectable from the input options. The default device selected for input is the virtual keyboard (see below).

Functions

• Save Chord - Hold down the “Save Chord” button and play two or more notes. Release the button - now you can play chords with one finger.
• Note Repeat - Hold down the “Note Repeat” button to repeat the currently played note. Set the BPM and subdivision values to adjust timing.
• Octave Up/Down - Pitch shift +/- 2 octaves.

Sound Parameters

Oscillator

Selectable waveforms include Sine, Square, Sawtooth and Triangle.

Filter

Selectable filters include Lowpass, Highpass and Bandpass. Frequency can be adjusted using the range slider.

FX

A delay can be added to the sound by adjusting the range sliders for Delay (the dry/wet mix), Feedback and Time (1-1000ms).

AMP

The overall volume of the sound can be controlled using the Gain range slider.

QWERTY keyboard mapping for virtual keyboard