Hearing device and method for fitting hearing device

1. A method for fitting a monaural hearing device, the method comprising:

obtaining audiograms of both ears;

obtaining head shape information of a user; and

adjusting an amplification gain based on the audiograms of both ears,

wherein the audiograms comprise an audiogram of a first ear for wearing the monaural hearing device and an audiogram of a second ear for not wearing the monaural hearing device, and

wherein the adjusting of the amplification gain comprises:

generating a volume fitting table using the head shape information and the audiogram of the first ear;

calculating a level difference per frequency band of audio signals perceived by both ears, using the volume fitting table and the audiogram with respect to the second ear;

extracting a detection threshold range based on the audiograms with respect to both ears;

adjusting the volume fitting table so that the level difference per frequency band is included in the detection threshold range in response to the level difference per frequency band being beyond the detection threshold range;

setting the adjusted volume fitting table as a directivity fitting table; and

adjusting the amplification gain according to the directivity fitting table.

2. The method of claim 1 , wherein the generating of the volume fitting table comprises:

calculating wide dynamic range compression (WDRC) information using the audiogram of the first ear; and

generating the volume fitting table using the head shape information and the WDRC information.

3. The method of claim 1 , wherein the calculating comprises:

calculating the level difference per frequency band using equal loudness information according to the frequency band.

4. The method of claim 1 , further comprising:

setting an operation mode of the monaural hearing device,

wherein the adjusting of the amplification gain further comprises adjusting the amplification gain based on the audiograms of both ears in response to the operation mode being a binaural fitting mode.

5. A method for fitting a binaural hearing device, the method comprising:

obtaining audiograms of both ears; and

adjusting an amplification gain of a first unit of the binaural hearing device for a first ear based on the audiogram of the first ear and an audiogram of a second ear for wearing a second unit of the binaural hearing,

wherein the adjusting comprises

generating a first volume fitting table using head shape information and the audiogram of the first ear;

calculating a level difference per frequency band of audio signals perceived by both ears, using the first volume fitting table and a second volume fitting table that is generated using the head shape information and the audiogram of the second ear;

extracting a detection threshold range based on the audiograms with respect to both ears;

adjusting the first volume fitting table so that the level difference per frequency band is included in the detection threshold range when the level difference per frequency band is beyond the detection threshold range;

setting the adjusted first volume fitting table as a directivity fitting table; and

controlling the amplification gain according to the directivity fitting table.

6. The method of claim 5 , further comprising:

obtaining head shape information of the user.

7. The method of claim 5 , wherein the generating of the first volume fitting table comprises:

calculating wide dynamic range compression (WDRC) information using the audiogram of the first ear; and

generating the first volume fitting table using the head shape information and the WDRC information.

8. The method of claim 5 , wherein the calculating comprises:

calculating the level difference per frequency band using equal loudness information according to the frequency band.

9. The method of claim 5 , further comprising:

setting an operation mode of the binaural hearing device,

wherein the adjusting of the amplification gain of the first unit comprises adjusting the amplification gain using the audiograms of both ears in response to the operation mode being a binaural fitting mode.

10. A non-transitory computer readable recording medium storing a program to cause a computer to execute the method of claim 1 .

11. A binaural hearing device, comprising:

an audiogram obtaining unit configured to obtain audiograms of a first ear and a second ear;

a first unit configured to amplify sound for the first ear;

a second unit configured to amplify sound for a second ear; and

an amplification gain control unit configured to adjust an amplification gain of the first unit based on the audiograms of the first ear and the second ear,

wherein the amplification gain control unit is configured to adjust the amplification gain by:

generating a first volume fitting table using head shape information and the audiogram of the first ear;

calculating a level difference per frequency band of audio signals perceived by both ears, using the first volume fitting table and a second volume fitting table that is generated using the head shape information and the audiogram of the second ear;

extracting a detection threshold range based on the audiograms with respect to both ears;

adjusting the first volume fitting table so that the level difference per frequency band is included in the detection threshold range when the level difference per frequency band is beyond the detection threshold range;

setting the adjusted first volume fitting table as a directivity fitting table; and

controlling the amplification gain according to the directivity fitting table.

12. The binaural hearing device of claim 11 , wherein the audiogram obtaining unit is configured to obtain the audiograms from a device storing the audiograms.

13. The binaural hearing device of claim 11 , wherein the first volume fitting table is generated based on the audiogram of the first ear and head shape information.