Audio level matching of different radio input sources

A method for processing a radio receiver input signal generated from one of a plurality of input sources, the method comprising the steps of:

• a) creating alignment information for each of the input sources by
• 1) setting a reference volume level on the radio receiver;
• 2) inputting a reference input signal from each input source to the radio receiver;
• 3) determining a reference output level for each input source;
• and
• 4) calculating an offset for each input source based on the corresponding reference output level;
• b) storing the alignment information in a memory;
• c) obtaining from a volume control setting, a required output level for the one of a plurality of input sources;
• d) retrieving the alignment information for the one input source memory;
• and
• e) converting the required output level into a matched output level based on the retrieved alignment information and the required output level.