.. _gettingStartedModulationDoc:

.. index:: single: Example; Ring Modulation
.. index:: single: Example; Amplitude Modulation

=============================
Ring and Amplitude Modulation
=============================

**Ring Modulation**

::

	AudioIn[1] * AudioIn[2] >> AudioOut[1];

----

**Amplitude Modulation**


::

	AudioIn[2]
	>> Level (
		gainType:	'Linear'
		gain:		AudioIn[1] * 0.5
		offset:		0.5
		bypass: 	off
	) 
	>> AudioOut[1:2];

The following is equivalent to the previous code:

::

	( AudioIn[1] * 0.5 + 0.5 ) * AudioIn[2] >> AudioOut[1];
	
Amplitude modulation through a processor with an analog input source. The control is set to run at ControlRate.
	
::

	signal Modulator {
		default: 	1.0
		rate:		ControlRate
		reset:		MasterReset
		meta:		'Analog input mapped to 0.0 to 1.0'
	}

	# Stream analog in 1 to the modulation control
	ControlIn[1] 
	>> Map (
		mode:		'Linear'
		minimum:	0.0
		maximum:	1.0
		bypass:		off
	)
	>> Modulator;
	
	AudioIn[2]
	>> Level (
		gainType:	'Linear'
		gain:		Modulator
		offset:		0.0
		bypass: 	off
	) 
	>> AudioOut[1:2];