Method for processing audio signal and broadcasting output apparatus using the same

1. An audio signal processing method comprising:

receiving a plurality of audio signals in which a same audio data content is compressed in different formats and is generated in different languages;

selecting at least one first audio signal generated in a preset language from among the received plurality of the audio signals and selecting a second audio signal to be processed from among the selected at least one first audio signal according to previously set priorities for the different formats; and

processing, by an audio signal processor, the selected second audio signal,

wherein the selected second audio signal is an audio signal of one of the different formats arranged according to the previously set priorities among the received plurality of the audio signals, and

wherein the previously set priorities are set in order of sound quality of the received plurality of the audio signals.

2. The audio signal processing method as claimed in claim 1 , further comprising:

setting the priorities for the different formats.

3. The audio signal processing method as claimed in claim 2 , further comprising:

outputting the processed second audio signal; and

setting a language to be applied when outputting the processed second audio signal.

4. The audio signal processing method as claimed in claim 3 , wherein the selecting selects the second audio signal of an audio format with a highest priority among the selected at least one first audio signal.

5. The audio signal processing method as claimed in claim 4 , wherein the set language is one of different national languages, and the different formats include a Moving Picture Experts Group (MPEG) format, a Dolby digital (Ac3) format, a Dolby digital plus (Ac3+) formant, an advanced audio coding (AAC) format and a high efficiency (HE)-AAC format.

6. The audio signal processing method as claimed in claim 1 , wherein the processing comprises:

decoding the selected second audio signal; and

outputting the decoded second audio signal.

7. The audio signal processing method as claimed in claim 1 , further comprising:

receiving a broadcast signal;

separating the broadcast signal into a video signal and the plurality of the audio signals; and

processing the separated video signal.

8. The audio signal processing method as claimed in claim 1 , wherein the selected second audio signal is selected independently of a corresponding video signal.

9. The audio signal processing method as claimed in claim 1 , wherein while the plurality of the audio signals in which the same audio data content is compressed in the different formats, a video signal corresponding the same audio data is compressed in only one type.

10. A broadcasting output apparatus comprising:

a tuner which receives a broadcast signal including a video signal and a plurality of audio signals in which a same audio data content is compressed in different formats and is generated in different languages;

a selection unit which selects at least one first audio signal generated in a preset language from among the received plurality of the audio signals and selects a second audio signal to be processed from among the selected at least one first audio signal according to previously set priorities for the different formats; and

an audio processor which processes the selected second audio signal,

wherein the selected second audio signal is an audio signal of one of the different formats arranged according to the previously set priorities among the received plurality of the audio signals, and

wherein the previously set priorities are set in order of sound quality of the received plurality of the audio signals.

11. The broadcasting output apparatus as claimed in claim 10 , further comprising:

a storage unit which stores the priorities set for the different formats.

12. The broadcasting output apparatus as claimed in claim 11 , wherein the storage unit further stores the preset language to be applied when outputting the processed second audio signal.

13. The broadcasting output apparatus as claimed in claim 12 , wherein the selection unit selects the second audio signal of an audio format with a highest priority among the selected at least one first audio signals.

14. The broadcasting output apparatus as claimed in claim 13 , wherein the preset language is one of different national languages, and the different formats include a Moving Picture Experts Group (MPEG) format, a Dolby digital (Ac3) format, a Dolby digital plus (Ac3+) formant, an advanced audio coding (AAC) format and a high efficiency (HE)-AAC format.

15. The broadcasting output apparatus as claimed in claim 13 , further comprising a controller that provides a user interface in which a user sets the preset language and the set priorities for the different formats.

16. The broadcasting output apparatus as claimed in claim 10 , wherein the audio processor comprises:

an audio decoder which decodes the selected second audio signal; and

an audio output unit which outputs the decoded second audio signal.

17. The broadcasting output apparatus as claimed in claim 10 , further comprising:

a demultiplexer which separates the received broadcast signal into a video signal and the plurality of the audio signals; and

a video processor which processes the separated video signal.

18. A audio/video (A/V) signal processing apparatus comprising:

a demultiplexer which receives and separates an input A/V signal into a video signal and a plurality of audio signals, each of the received plurality of the audio signals comprising a same audio data content and having a different combination of a language and an audio encoding format with respect to another audio signal of the received plurality of the audio signals;

a selection unit that selects at least one first audio signal generated in a preset language from among the received plurality of the audio signals and selects a second audio signal from among the selected at least one first audio signal, according to previously set priorities for a plurality of audio encoding formats;

a video processor which processes the video signal; and

an audio processor which processes the selected second audio signal,

wherein the selected second audio signal is an audio signal having an audio encoding format having a highest priority, according to the previously set priorities, from among the received plurality of the audio signals, and

wherein the previously set priorities are set in order of sound quality of the received plurality of the audio signals.

19. The A/V signal processing apparatus of claim 18 , further comprising:

a storage unit which stores information on the preset language and the plurality of the audio encoding formats with the corresponding priorities according to which the selection unit selects the second audio signal; and

a controller which obtains the information on the preset language and the plurality of the audio encoding formats and sends the obtained information to the selection unit for the selection of the second audio signal,

wherein the selected second audio signal is an audio signal having the preset language and the audio encoding format having the highest priority, according to the previously set priorities, from among the received plurality of the audio signals.

20. The A/V signal processing apparatus of claim 19 , wherein the selected second audio signal is an audio signal having the preset language and an audio encoding format having a next priority, according to the previously set priorities, from among the received plurality of the audio signals if the audio signal having the preset language and the encoding format having the highest priority cannot be processed in the A/V signal processing apparatus.

21. The A/V signal processing apparatus of claim 20 , wherein the controller provides a user interface in which a user sets the preset language and the corresponding priorities to the plurality of the audio encoding formats.

22. The A/V signal processing apparatus of claim 18 , wherein the language is one of different national languages, and the audio encoding format having the highest priority is one of a Moving Picture Experts Group (MPEG) format, a Dolby digital (Ac3) format, a Dolby digital plus (Ac3+) formant, an advanced audio coding (AAC) format and a high efficiency (HE)-AAC format.