Pure digital audio system equal loudness compensation method and system

The invention discloses a pure digital audio system equal loudness compensation method and system. An inherent volume control module and EQ module in a digital audio system are used. Through a volume configuration table, the volume control module and the EQ module are associated. According to the invention, under different volume output, detailed equal loudness compensation can be carried out according to the characteristics of a human ear; the human ear perceives the same degree of balance under low volume and high volume; and the method and the system have the advantages of being simple and reliable, low cost and high compensation accuracy.