Patent ID: 8213639

Claim:
A sound and light control apparatus, comprising: a casing, having a containing space therein; an audio signal input terminal, disposed on the casing for receiving an audio signal transmitted from an audio amplifier; a voltage dividing circuit, installed in the casing and electrically coupled with the audio signal input terminal for receiving the audio signal and dividing the voltage of the audio signal into two divided voltages; a control knob, installed on the casing and electrically coupled with the voltage dividing circuit, such that when the control knob is turned, impedance of a voltage dividing resistor on the voltage dividing circuit is changed, and the divided voltages are changed correspondingly; at least one audio signal output terminal, installed on the casing and electrically coupled to the voltage dividing circuit and at least one loudspeaker for transmitting one divided voltage to the loudspeaker, such that the loudspeaker produces a sound and a sound volume according to the divided voltage transmitted to the loudspeaker; a frequency-divider crossover circuit, installed in the casing and electrically coupled with the voltage dividing circuit for receiving the other divided voltage transmitted to frequency-divider crossover circuit, and filtering the other divided voltage according to a plurality of different audio frequencies to generate corresponding frequency division voltages; and at least one frequency division voltage output terminal, installed on the casing and electrically coupled to the frequency-divider crossover circuit for transmitting the frequency division voltages to corresponding light emitting diodes, such that each light emitting diode generates a light corresponding to the frequency division voltage.