AUDIO SIGNAL CONTROL METHOD CAPABLE OF PREVENTING DAMAGE OF HEARING ABILITY OF A USER BY CONTROLLING THE OUTPUT LEVEL OF AN AUDIO SIGNAL WHICH IS GREATER THAN A TOLERANT REFERENCE VALUE, AND A DEVICE THEREOF

摘要

PURPOSE: An audio signal control method and a device thereof are provided to effectively apply a method of protecting hearing ability to a device by providing a method of calculating a hearing stimulus exposure in real time.;CONSTITUTION: A monitoring part(210) calculates a relative level of a play sound source compared to a maximum level which is possible in the digital domain. A storage part(230) stores the accumulated values of stimulus values and an output sound pressure conversion table. A real output sound pressure output part(220) produces the real output sound pressure level by using the volume of the mobile terminal including the output sound pressure conversion table and an audio signal control device. A signal control part(240) calculates the stimulus value according to the sound pressure level. The signal control part compares the stimulus accumulated value with the reference value by accumulating the stimulus values. The signal control part determines the audio signal control through the comparison. An audio output part(260) outputs an audio signal by controlling the output level of the audio signal. A state display part(250) displays a hearing protection step.;COPYRIGHT KIPO 2010