Method and apparatus for processing audio signal based on speaker location information

1. A method of processing an audio signal, the method comprising:

acquiring location information and performance information of a speaker configured to output the audio signal;

selecting a frequency band based on the location information;

determining a section of the audio signal to be strengthened from the selected frequency band with respect to the audio signal based on the performance information; and

applying a gain value to the determined section.

2. The method of claim 1 , wherein the selecting the frequency band comprises:

determining a central axis based on a location of a listener; and

selecting the frequency band based on a linear distance between the speaker and the central axis.

3. The method of claim 1 , wherein the applying the gain value comprises:

determining a central axis based on a location of a listener; and

determining the gain value based on a distance between the speaker and the central axis; and

applying the determined gain value to the determined section.

4. The method of claim 1 , further comprising:

determining a parameter based on the location information; and

processing the audio signal using the determined parameter,

wherein the parameter comprises at least one of a gain for correcting a sound level of a sound image of the audio signal based on the location information of the speaker, and a delay time for correcting a phase difference of the sound image of the audio signal based on the location information of the speaker.

5. The method of claim 4 , wherein, when a plurality of speakers are provided, the parameter further includes a panning gain for correcting a direction of a sound image of the audio signal.

6. The method of claim 1 , further comprising:

obtaining an energy variation of the audio signal between frames in a time domain;

determining a gain value of a frame according to the energy variation; and

applying the determined gain value to a portion of the audio signal corresponding to the frame.

7. The method of claim 1 , further comprising:

detecting a section in which masking has occurred based on the section to which the gain value is applied; and

applying the gain value to the detected section of the audio signal so that a portion of the audio signal corresponding to the detected section has a value greater than or equal to a masking threshold.

8. The method of claim 1 , wherein the applying the gain value comprises:

extracting a non-mono signal from the audio signal;

determining the gain value based on a maximum value of the non-mono signal; and

applying the determined gain value to the audio signal.

9. An audio signal processing apparatus comprising:

a receiver configured to acquire location information and performance information of a speaker configured to output an audio signal;

a controller configured to select a frequency band based on the location information, determine a section of the audio signal to be strengthened from the selected frequency band with respect to the audio signal based on the performance information, and apply a gain value to the determined section; and

an output unit configured to output the audio signal having the gain value applied to the determined section by the controller.

10. The audio signal processing apparatus of claim 9 , wherein the controller is further configured to determine a central axis based on a location of a listener and select the frequency band based on a linear distance between the speaker and the central axis.

11. The audio signal processing apparatus of claim 9 , wherein the controller is further configured to determine a central axis based on a location of a listener, determine the gain value based on a distance between the speaker and the central axis, and apply the determined gain value to the determined section.

12. The audio signal processing apparatus of claim 9 , wherein the controller is further configured to determine a parameter based on the location information and process the audio signal using the determined parameter, and

wherein the parameter comprises at least one of a gain for correcting a sound level of a sound image of the audio signal based on the location information of the speaker, and a delay time for correcting a phase difference of the sound image of the audio signal based on the location information of the speaker.

13. The audio signal processing apparatus of claim 9 , wherein the controller is further configured to obtain an energy variation of the audio signal between frames in a time domain, determine a gain value of a frame according to the energy variation, and apply the determined gain value to a portion of the audio signal corresponding to the frame.

14. The audio signal processing apparatus of claim 9 , wherein the controller is further configured to detect a section in which masking has occurred based on the section to which the gain value is applied, and apply the gain value to the detected section of the audio signal so that the detected section of the audio signal has a value greater than or equal to a masking threshold.

15. The audio signal processing apparatus of claim 9 , wherein the controller is configured to extract a non-mono signal from the audio signal, determine the gain value based on a maximum value of the non-mono signal, and apply the determined gain value to the audio signal.

16. A non-transitory computer-readable recording medium storing instructions which, when executed by a processor, cause the processor to perform method of processing an audio signal, the method comprising:

acquiring location information and performance information of a speaker configured to output the audio signal;

selecting a frequency band based on the location information;

determining a section of the audio signal to be strengthened from the selected frequency band with respect to the audio signal based on the performance information; and

applying a gain value to the determined section.