Widex UNIQUE Series, User Instructions

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For programming, these requirements include a BER (Bit Error
Rate) better than 10-3, at a bitrate of 212 kbits/s, a semi-duplex
transmission with a required acknowledge, a transmission latency
in each direction (2x) and a receive-to-transmit mode (RX to TX)
time. The data are saved in the hearing aid even when transmis-
sion is interrupted.
During daily use, the requirements on audio streaming between
hearing aids include a BER better than 10-3. The communication is
simplex with a bitrate of 212 kbits/s. The additional audio decod-
ing in this mode results in a longer latency which is less than 10
ms. For remote control commands the QoS requirements include
a BER better than 10-2. The lower BER requirement results from
redundant transmissions. Each key press results in transmissions
of 7 data packages of which only one is needed for a successful
communication.
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