Abstract: A communication system including a caption device and a mobile device configured to engage in communication with each other. The caption device is configured to receive a text signal originating at a relay service, the text signal corresponding to a far-end voice signal originating at a far-end device. The caption device is configured to display text corresponding to the text signal on a display. The relay service is configured to receive the far-end voice signal, and transmit the text signal to the caption device. The mobile device is configured to receive the far-end voice signal, and transmit the far-end voice signal to the relay service. A method of facilitating a captioned conversation between a far-end user and a near-end user having a caption device includes establishing communication between a caption device and a mobile device, and between the caption device and a relay service.

Abstract: Methods and devices for enabling and disabling updating an adaptive filter for echo cancellation of a communication device are disclosed. An echo canceller may include an adaptive filter that may be enabled to update responsive to a determination that a first condition is satisfied that there is no double talk detected on the communication device, and a determination that a second condition is satisfied based, at least in part, on the performance characteristic. The adaptive filter may be disabled from updating responsive to at least one of the first condition and the second condition not being satisfied. Disabling the adaptive filter from updating may be responsive to detecting a performance characteristic of the adaptive filter to fail to meet a condition indicating that the adaptive filter is diverging. The condition to be met may be independent of whether double-talk is determined to be present on the communication device.

Abstract: Methods and devices are disclosed for performing echo cancellation with a communication device for use by a hearing-impaired user. The communication device comprises communication elements, a memory device storing a plurality of sets of training parameters for an echo canceller, and a processor operably coupled with the communication elements and the memory device. The communication elements are configured to receive audio signals from a far end communication device, and to receive text captions corresponding to the audio signals from a relay service for display by the communication device during a call. Each set of training parameters corresponding to a different audio mode for the communication device. The processor is configured to execute an echo canceller by loading a first set of training parameters when a first audio mode is selected, and a second set of training parameters when a second audio mode is selected.

Abstract: Methods and devices for enabling and disabling updating an adaptive filter for echo cancellation of a communication device are disclosed. An echo canceller may include an adaptive filter that may be enabled to update responsive to a determination that a first condition is satisfied that there is no double talk detected on the communication device, and a determination that a second condition is satisfied based, at least in part, on the performance characteristic. The adaptive filter may be disabled from updating responsive to at least one of the first condition and the second condition not being satisfied. Disabling the adaptive filter from updating may be responsive to detecting a performance characteristic of the adaptive filter to fail to meet a condition indicating that the adaptive filter is diverging. The condition to be met may be independent of whether double-talk is determined to be present on the communication device.

Abstract: A communication system including a caption device and a mobile device configured to engage in communication with each other. The caption device is configured to receive a text signal originating at a relay service, the text signal corresponding to a far-end voice signal originating at a far-end device. The caption device is configured to display text corresponding to the text signal on a display. The relay service is configured to receive the far-end voice signal, and transmit the text signal to the caption device. The mobile device is configured to receive the far-end voice signal, and transmit the far-end voice signal to the relay service. A method of facilitating a captioned conversation between a far-end user and a near-end user having a caption device includes establishing communication between a caption device and a mobile device, and between the caption device and a relay service.