Oscillator
	Parameters
		frequency
		duty cycle
		frequency controlled?
			if so, frequency 2
		duty cycle controlled?
			if so, duty cycle 2
	Inputs
		if frequency controlled, frequency control
		if duty cycle controlled, duty cycle control
	Outputs: square, triangle, sine

Constant
	Parameters: value
	Inputs: none
	Outputs: signal

Amp
	Parameters: amplification factor
	Inputs: signal
	Outputs: signal

Sum
	Parameters: none
	Inputs: 1-infty
	Outputs: signal

Product
	Parameters: none
	Inputs: 1-infty
	Outputs: signal

Comparator
	Parameters: hysteresis
	Inputs: signal 1, signal 2
	Outputs: signal

Noise
	Parameters: significant bits, white/pink/brown
	Inputs: none
	Outputs: signal

Linear envelope
	Parameters: attack time, hold time, decay time
	Inputs: trigger
	Outputs: envelope

Poisson envelope
	Parameters: ?
	Inputs: trigger
	Outputs: envelope

Key
	Parameters: controlling external key
	Inputs: none
	Outputs: signal

Output
	Parameters: none
	Inputs: left, right
	Outputs: none

Parameter types:
	signal level (-1..1)
	frequency (-infty..infty)
	amplification factor (-infty..infty)
	1-of-N choice (including yes/no)
	time (0..infty)