No comment. Sorry.

	copying
	copy copySound

	initialization
	setPitch:dur:loudness: setSound:iterations:

	sound generation
	doControl mixSampleCount:into:startingAt:leftVol:rightVol: reset samplesRemaining

	instance creation
	repeat:count: repeatForever:

	accessing	top
	iterationCount
	iterationCount:
	sound
	sound:

	copying	top
	copy Copy my component sound.
	copySound Private! Support for copying. Copy my component sound.

	initialization	top
	setPitch:dur:loudness: Initialize my envelopes for the given parameters. Subclasses overriding this method should include a resend to super.
	setSound:iterations: Initialize the receiver to play the given sound the given number of times. If iteration count is the symbol #forever, then repeat indefinitely.

	sound generation	top
	doControl Update the control parameters of this sound using its envelopes, if any.
	mixSampleCount:into:startingAt:leftVol:rightVol: Play a collection of sounds in sequence.
	reset Reset my internal state for a replay. Methods that override this method should do super reset.
	samplesRemaining Answer the number of samples remaining until the end of this sound. A sound with an indefinite ending time should answer some large integer such as 1000000.

	car motor example	top
	carMotorSound Return a repeating sound for the sound of a car engine.
	carMotorSound: Return a repeating sound for the sound of a car engine running at the given speed.
	initializeCarMotor Initialize the samples array for the sound of a car engine.

	instance creation	top
	repeat:count: Return a RepeatingSound that will repeat the given sound for the given number of iterations.
	repeatForever: Return a RepeatingSound that will repeat the given sound forever.