return function (note, time, duration, options) {
var f = freq(midi(note))
if (!f) return
duration = duration || 0.2
options = options || {}
var destination = options.destination || defaultOptions.destination || ctx.destination
var vcoType = options.vcoType || defaultOptions.vcoType || 'sine'
var gain = options.gain || defaultOptions.gain || 0.4
var vco = ctx.createOscillator()
vco.type = vcoType
vco.frequency.value = f
/* VCA */
var vca = ctx.createGain()
vca.gain.value = gain
/* Connections */
vco.connect(vca)
vca.connect(destination)
vco.start(time)
if (duration > 0) vco.stop(time + duration)
return vco
}
return function (note, time, duration) {
var m = note > 0 && note < 128 ? note : midi(note)
var buffer = buffers[m]
if (!buffer) return
var source = ctx.createBufferSource()
source.buffer = buffer
/* VCA */
var vca = ctx.createGain()
vca.gain.value = gain
source.connect(vca)
vca.connect(destination)
source.start(time)
if (duration > 0) source.stop(time + duration)
return source
}
var promises = Object.keys(bank.data).map(function (note) {
// First check is notes are passed by as param
if (typeof notes !== 'undefined') {
// convert the notes to midi number
var notesMidi = notes.map(midi)
// if the current notes is needed for the instrument.
if (notesMidi.indexOf(midi(note)) !== -1) {
return decodeBuffer(bank.ctx, bank.data[note])
.then(function (buffer) {
bank.buffers[midi(note)] = buffer
})
}
} else {
return decodeBuffer(bank.ctx, bank.data[note])
.then(function (buffer) {
bank.buffers[midi(note)] = buffer
})
}
})
return function (note, time, duration) {
var f = freq(midi(note))
if (!f) return
duration = duration || 0.2
var vco = ctx.createOscillator()
vco.type = vcoType
vco.frequency.value = f
/* VCA */
var vca = ctx.createGain()
vca.gain.value = gain
/* Connections */
vco.connect(vca)
vca.connect(destination)
vco.start(time)
if (duration > 0) vco.stop(time + duration)
return vco
}
return function (note, time, duration, options) {
var m = note > 0 && note < 128 ? note : midi(note)
var buffer = bank[m]
if (!buffer) return
options = options || {}
var gain = options.gain || defaultOptions.gain || 2
var destination = options.destination || defaultOptions.destination || ctx.destination
var source = ctx.createBufferSource()
source.buffer = buffer
/* VCA */
var vca = ctx.createGain()
vca.gain.value = gain
source.connect(vca)
vca.connect(destination)
if (duration > 0) {
source.start(time, 0, duration)
} else {
source.start(time)
}
return source
}
scheduler.schedule(ac, 0, e, function (time, note) {
console.log(time, note)
var freq = toFreq(440, toMidi(note.pitch))
if (freq) player(ac, freq, time, note.duration, note.velocity)
})
.then(function (buffer) {
bank.buffers[midi(note)] = buffer
})