| 摘要 |
The invention relates to a method of providing dynamic hearing protection to a user, comprising: measuring the open ear resonance of an ear canal of the user or an ear canal (56) approximating the user' ear canal, without a hearing protection device being worn in the ear canal, as a function of the angle of sound incidence; measuring the open ear resonance of the ear canal of the user or an ear canal approximating the user' ear canal, with a hearing protection device (10, 12) being worn in the ear canal, as a function of the angle of sound incidence; forming the difference between the two measurements order to determine a hearing protection device specific differential head related transfer function; inserting the hearing protection device into the user's ear canal; capturing audio signals from ambient sound emitted by a sound source by a microphone arrangement (19) of the hearing protection device; determining the angle of incidence of the sound emitted by the sound source; processing the captured audio signals by applying a frequency dependent gain function to the captured audio signals selected according to the determined angle of sound incidence to the audio signals, wherein each of the gain functions is determined by inverting said hearing protection device specific differential head related transfer function for the respective angle of sound incidence; and stimulating the user's hearing via the hearing protection device according to the processed audio signals. |
