Audio signal correction and calibration for a room environment

1. A method, comprising:

creating an original frequency response based on an audio signal generated within an environment;

identifying a target sub-region of the frequency response that is determined to be a narrow energy region;

performing an operation on the target sub-region to create a new flattened sub-region;

creating at least one filter to adjust the frequency response, the at least one filter comprising at least one parameter based on the flattened sub-region; and

applying the at least one filter to the audio signal.

2. The method of claim 1 , further comprising:

calculating a frequency, a quality factor (Q) and a gain (G) of the target sub-region;

determining whether the Q is greater than a predefined Q threshold and whether the gain is less than a predefined G threshold; and

if the Q is greater than the predefined Q threshold and the G is less than the predefined G threshold then determining that the target sub-region is the narrow energy region.

3. The method of claim 1 , wherein the target sub-region of the frequency response has a predetermined area percentage of a total area under a curve generated by the frequency response.

4. The method of claim 2 , further comprising creating at least one filter based on a new frequency, Q value and G value of the flattened sub-region.

5. The method of claim 1 , further comprising creating a new frequency response based on the target sub-region and the corresponding at least one filter.

6. The method of claim 5 , further comprising subtracting the original frequency response from the new frequency response.

7. The method of claim 2 , wherein the predefined Q threshold is 10 and the predefined G threshold is 0.5.

8. An apparatus, comprising:

a memory; and

a processor configured to:

create an original frequency response based on an audio signal generated within an environment;

identify a target sub-region of the frequency response that is determined to be a narrow energy region;

perform an operation on the target sub-region to create a new flattened sub-region;

create at least one filter to adjust the frequency response, the at least one filter comprising at least one parameter based on the flattened sub-region; and

apply the at least one filter to the audio signal.

9. The apparatus of claim 8 , wherein the processor is further configured to:

calculate a frequency, a quality factor (Q) and a gain (G) of the target sub-region;

determine whether the Q is greater than a predefined Q threshold and whether the gain is less than a predefined G threshold; and

if the Q is greater than the predefined Q threshold and the G is less than the predefined G threshold then determine that the target sub-region is the narrow energy region.

10. The apparatus of claim 8 , wherein the target sub-region of the frequency response has a predetermined area percentage of a total area under a curve generated by the frequency response.

11. The apparatus of claim 9 , wherein the filter is also configured to create the at least one filter based on a new frequency, Q value and G value of the flattened sub-region.

12. The apparatus of claim 8 , wherein the processor is also configured to create a new frequency response based on the target sub-region and the corresponding at least one filter.

13. The apparatus of claim 12 , wherein the processor is also configured to subtract the original frequency response from the new frequency response.

14. The apparatus of claim 9 , wherein the predefined Q threshold is 10 and the predefined G threshold is 0.5.

15. A non-transitory computer readable storage medium comprising instruction that when read by a processor perform:

creating an original frequency response based on an audio signal generated within an environment;

identifying a target sub-region of the frequency response that is determined to be a narrow energy region then performing an operation on the target sub-region to create a new flattened sub-region;

creating at least one filter to adjust the frequency response, the at least one filter comprising at least one parameter based on the flattened sub-region; and

applying the at least one filter to the audio signal.

16. The non-transitory computer readable storage medium of claim 15 , wherein the processor is further configured to perform:

calculating a frequency, a quality factor (Q) and a gain (G) of the target sub-region;

determining whether the Q is greater than a predefined Q threshold and whether the gain is less than a predefined G threshold; and

if the Q is greater than the predefined Q threshold and the G is less than the predefined G threshold then determining that the target sub-region is the narrow energy region.

17. The non-transitory computer readable storage medium of claim 15 , wherein the target sub-region of the frequency response has a predetermined area percentage of a total area under a curve generated by the frequency response.

18. The non-transitory computer readable storage medium of claim 16 , wherein the processor is further configured to perform creating the at least one filter based on a new frequency, Q value and G value of the flattened sub-region.

19. The non-transitory computer readable storage medium of claim 15 , wherein the processor is further configured to perform creating a new frequency response based on the target sub-region and the corresponding at least one filter.

20. The non-transitory computer readable storage medium of claim 16 , wherein the processor is further configured to perform subtracting the original frequency response from the new frequency response, and wherein the predefined Q threshold is 10 and the predefined G threshold is 0.5.