Getting just a wee bit technical ... a "soft starter" temporarily switches a current limiting resistor inline (series) with the motor windings. It then removes the resistor after a few seconds (deluxe models may monitor the current and keep the resistor in the circuit until the current drops below a certain value).
Not so sure the micro air uses that old school method of starting motors. Have to deal with the heat from the resistors and the unit comes in a sealed plastic housing. I've serviced a few industrial motors and those reduced voltage starters using resistors you described get replaced with either soft starters or if speed control is desired VFDs.