BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an audio analog-to-digital (A / D) conversion apparatus using a high definition television, which satisfies the AES (Audio Engineering Society) / EBU (European Broadcasting Union) standard for digital broadcasting and converts an analog audio signal into a digital signal of various bits. The present invention relates to a digital audio signal processing apparatus and method, which includes an analog / digital conversion unit for converting an input analog audio signal into a digital audio signal corresponding thereto, a digital signal conversion unit for converting the digital audio signal converted by the analog / digital conversion unit into an audio signal conforming to the AES / A control unit for controlling the analog / digital conversion unit and the digital signal conversion unit and separating the digital audio signal obtained by the digital signal conversion unit into a modified I2S digital signal and an I2S digital signal and outputting the digital I2S digital signal and the I2S digital signal; Converting the audio signal into a parallel audio signal To a and a digital transmission unit for transmitting.
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