DVD-audio disk, and apparatus and method for playing the same

An apparatus for playing a DVD-Audio disk, wherein the DVD-Audio disk includes a data zone to store data to be reproduced by the apparatus and an information zone to store information on said data to be reproduced, said information zone includes directories of a video title set (VIDEO_TS) and an audio title set (AUDIO_TS), wherein said AUDIO_TS directory includes information on an audio manager (AMG) having information on audio titles, wherein said data zone includes said audio titles each having audio title set information (ATSI) followed by a plurality of contiguous audio objects (AOBs), said ATSI includes a plurality of audio stream attributes each having an audio coding mode, indicates one of and is capable of individually indicating each of a first, second or third quantization bit number corresponding to the data to be reproduced, indicates one of and is capable of individually indicating each of a first, second, third, fourth, fifth or sixth sampling frequency corresponding to the data to be reproduced, and decoding algorithm information relating to a number of audio channels of the data to be reproduced, and each of said AOBs includes a plurality of audio packs recorded with audio data corresponding to the decoding algorithm stored in the audio stream attribute, said apparatus comprising:

• a pickup to receive said audio data retrieved from the DVD-Audio disk;
• and
• a controller to detect from the audio data the audio coding mode, the one of said first through sixth sampling frequencies, the number of audio channels, and the one of said first through third quantization bit numbers based upon information on the audio data, and to reproduce the audio data according to the detected audio coding mode, the detected one sampling frequency, the detected number of audio channels, and the detected one quantization bit number.