Five chained BiquadFilterNodes, two shelves and three peaking bands, driven by sliders in decibels. Each dB value is converted with 10^(dB/20) and the resulting response curve is drawn from the filter equations, not from a picture of one.
Each band is a BiquadFilterNode chained in series: two shelving filters at the ends and peaking filters in the middle. dB is converted to a linear gain with 10^(dB/20), which is the amplitude form of the decibel.
Work out the real file size of an audio file at any bitrate, sample rate or channel count.
Translate text to Morse and back, then play the symbols as real tones through Web Audio.
Tune by ear with a live needle against the standard reference pitch, for guitar or any instrument.
A metronome with an accent on the first beat and a swinging option, driven by a real audio clock.
Spell any text out in the NATO phonetic alphabet, with a harder alphabet option.
Audit a password's entropy, character-class spread and crack time, with the input hidden by default.
Draw on a pixel grid with a palette, undo, a checkerboard transparency view and a PNG export.
Split a list of names into balanced teams, with a best-of-many reroll for the fairest split.
