It comes with a frontend GUI for managing sound wave details.
For short clips it can generate the audio in 30ms in a good browser.
Here are some key features of "jsfx":
· Sound wave type - sine, square, saw, noise, synth
· Master Volume
· Attack Time
· Sustain Time
· Sustain Punch
· Decay Time
· Min Frequency
· Start Frequency
· Max Frequency
· Slide
· Delta Slide
· Vibrato Depth
· Vibrato Frequency
· Vibrato Depth Slide
· Vibrato Frequency Slide
· Change Amount
· Change Speed
· Square Duty
· Square Duty Sweep
· Repeat Speed
· Phaser Offset
· Phaser Sweep
· LP Filter Cutoff
· LP Filter Cutoff Sweep
· LP Filter Resonance
· HP Filter Cutoff
· HP Filter Cutoff Sweep
· Super Sampling Quality
Requirements:
· Browser WAV support
· JavaScript enabled on client side