A CONTROL APPARATUS FOR LED COLOR BY VOICE SIGNAL LEVEL

摘要

PURPOSE: A color lamp control device is provided to implement the beautiful indoor of a vehicle by making the brightness of an LED different according to a sound pressure at each frequency band. CONSTITUTION: A left channel of a voice signal is inputted to a control unit(127) via a left channel amplifier(107) and an OP amplifier(123). A right channel of a voice signal is inputted to the control unit via a right channel amplifier(109) and an OP amplifier(125). The control unit controls an LED driver(129). The LED driver drives an LED(149). Power supplied from a battery(101) is supplied to the control unit and the LED driver via a regulator(131). The brightness of the LED is changed according to the sound pressure in a music mode.