| 摘要 |
There is provided a method of providing hearing assistance to a at Ieast one user (11A-11 F) wearing at Ieast one receiver hearing assistance device (14A-14D) capable of receiving audio signals via an RF link (12) from at least one audio transmission device (10A-10F; 14A-14D) worn by a another user (11A-11 F), and capable of transmitting audio signals, each device comprising a wireless network interface (28, 48), the method comprising: automatically pairing and connecting the audio transmission device on a service level with the receiver hearing assistance device through their wireless network interfaces to form an ad-hoc network in order to exchange network and/or control information, estimating at least one of an angular direction of the audio transmission device with regard to a viewing direction of the user of the receiver hearing assistance device and an angular direction of the receiver hearing assistance device with regard to a viewing direction of the user of the audio transmission device, admitting the audio transmission device to a wireless local acoustic area network for exchanging audio signals with the receiver hearing assistance device only if, as a predefined admission rule, the transmission device is within a field of view (15A-15D) of the user of the receiver hearing assistance device or the receiver hearing assistance device is within a field of view of the user of the audio transmission device, wherein the field of view is a an angular sector centered around the respective viewing direction. |
