Hearing loss compensation apparatus and method using 3D equal loudness contour
A hearing loss compensation apparatus and method compensate for distortion caused by a change in a sound transmission path using hearing characteristics of a user. The hearing loss compensation apparatus may include a sound direction detection device configured to detect a sound generation direction, in which a sound generates, using one or more microphones, and a sound compensation device configured to compensate the sound using hearing characteristics of a user corresponding to the sound generation direction. Additionally, a hearing characteristics measurement apparatus and method provide a way to obtain such hearing characteristics information.
1. A hearing loss compensation apparatus, comprising:
a sound direction detection device configured to detect, using a microphone, a sound generation direction from which a sound is generated; and
a sound compensation device configured to amplify the sound based on hearing characteristics of a user corresponding to the sound generation direction and comprising an equal loudness contour of the user, in response to detecting a difference between the equal loudness contour of the user and a reference equal loudness contour,
wherein the equal loudness contour of the user is determined by mapping hearing thresholds corresponding to azimuths and frequencies,
wherein the equal loudness contour of the user exists in 3D space comprising a first axis corresponding to the azimuths, a second axis corresponding the frequencies, and a third axis corresponding to the hearing thresholds,
wherein the sound compensation device is further configured to determine the hearing characteristics of the user by comparing hearing abilities of the user at the azimuths and average hearing abilities of other users at the respective azimuths, and amplify the sound based on a characteristic, among the hearing characteristics of the user, that corresponds to an azimuth corresponding to the sound generation direction, and
wherein the other users share a common demographic characteristic with the user.
2. The hearing loss compensation apparatus of claim 1 , wherein:
wherein
a hearing threshold among the hearing thresholds is a minimum magnitude of sound audible by the user at an azimuth and a frequency, and
the minimum magnitude of sound is measured by moving a position of a sound stimulation and by controlling a frequency and a magnitude of the sound stimulation.
3. A hearing loss compensation method, comprising:
detecting a sound generation direction, using a microphone, from which a sound is generated; and
amplifying the sound based on hearing characteristics of a user corresponding to the sound generation direction and comprising an equal loudness contour of the user, in response to detecting a difference between the equal loudness contour of the user and a reference equal loudness contour,
wherein the equal loudness contour of the user is determined by mapping hearing thresholds corresponding to azimuths and frequencies,
wherein the equal loudness contour of the user exists in 3D space comprising a first axis corresponding to the azimuths, a second axis corresponding the frequencies, and a third axis corresponding to the hearing thresholds,
wherein the amplifying of the sound comprises determining the hearing characteristics of the user by comparing hearing abilities of the user at the azimuths and average hearing abilities of other users at the respective azimuths, and amplifying the sound based on a characteristic among the hearing characteristics of the user, that corresponds to an azimuth corresponding to the sound generation direction, and
wherein the other users share a common demographic characteristic with the user.
4. The hearing loss compensation method of claim 3 , wherein
a hearing threshold among the hearing thresholds is a minimum magnitude of sound audible by the user at an azimuth and frequency, and
the minimum magnitude of sound is measured by moving a position of a sound stimulation and controlling a frequency and a magnitude of the sound stimulation.
5. A non-transitory computer-readable medium storing instructions that, when executed by one or more processors, cause the one or more processors to implement the method of claim 3 .
6. The apparatus of claim 1 , wherein the other users are a same age as the user.
7. The apparatus of claim 1 , wherein the other users are a same gender as the user.