Variable volume method when receiving traffic information broadcast of car audio

摘要

The present invention relates to a method for varying the volume of a car audio traffic information broadcast signal, the car audio signal varying the volume of the car audio signal output from the speaker under the control of the microcomputer when a digital code indicating traffic information broadcast is received in the car audio, Determining whether traffic information broadcasting is received in audio and whether a selection switch of traffic information broadcasting is on, determining whether the current broadcasting is proceeding in the RDS traffic information broadcasting station after the step, If the condition of the step is satisfied, it is determined whether or not the predetermined volume level is one level, whether or not the traffic broadcasting is performed in the broadcasting station after the step, and whether the traffic information broadcasting selection switch is continuously turned on If all the conditions are not satisfied in the above step, the RDS And returning to a previous volume level value other than the traffic information broadcast.