Packet loss concealment techniques for phone-to-hearing-aid streaming
View Patent ↗Embodiments of packet loss concealment for phone-to-hearing-aid streaming are generally described herein. A method for packet loss concealment can include receiving a first frame at a hearing assistance device, determining, at the hearing assistance device, that a second frame was not received within a predetermined time, and determining a first set of sequential samples that match the first frame. The method can include cross-fading the first frame and the first set of sequential samples to create a first cross-faded frame and extrapolating a third frame to replace the second frame using the first set of sequential samples and an autoregressive model.
1. A method for packet loss concealment, comprising:
receiving a first frame of a wireless transmission at a hearing assistance device;
saving a history of received packets to a memory;
determining, at the hearing assistance device, that a second frame was not received within a predetermined time;
determining from the history a first set of sequential samples including a first portion that matches the first frame;
cross-fading the first frame and the first portion of the first set of sequential samples to create a first cross-faded frame, and replacing the first frame with the first cross-faded frame; and
extrapolating a third frame to replace the second frame using a second portion of the first set of sequential samples and an autoregressive model.
2. The method of claim 1 , wherein the first frame is received from a mobile device.
3. The method of claim 1 , further comprising playing the first cross-faded frame.
4. The method of claim 3 , further comprising playing the third frame after the first cross-faded frame.
5. The method of claim 1 , wherein the third frame includes a second set of samples, and wherein the second set of samples include samples starting one frame after the first set of sequential samples.
6. The method of claim 5 , further comprising determining, at the hearing assistance device, that a fourth frame was not received within a predetermined time.
7. The method of claim 6 , further comprising cross-fading the third frame with the second set of samples to create a second cross-faded frame to replace the fourth frame.
8. The method of claim 7 , further comprising playing the second cross-faded frame.
9. The method of claim 1 , further comprising encoding the first frame using an adaptive differential pulse-code modulation.
10. The method of claim 1 , wherein the autoregressive model includes a model order of at least 50.
11. A hearing assistance device, comprising:
a wireless receiver; and
a processor configured to:
receive a first frame of a wireless transmission at the hearing assistance device;
save a history of received packets to a memory;
determine from the history a first set of sequential samples including a first portion that matches the first frame;
determine that a second frame was not received within a predetermined time;
cross-fade the first frame and the first portion of the first set of sequential samples to create a first cross-faded frame, and replace the first frame with the first cross-faded frame; and
extrapolate a third frame to replace the second frame using a second portion of the first set of sequential samples and an autoregressive model.
12. The device of claim 11 , wherein the receiver is configured to receive the first frame after it is transmitted from a mobile device.
13. The device of claim 11 , further comprising a speaker configured to play information using the first cross-faded frame.
14. The device of claim 13 , wherein the speaker is configured to play the third frame after the first cross-faded frame.
15. The device of claim 11 , wherein the third frame includes a second set of samples, and wherein the second set of samples include samples starting one frame after the first set of sequential samples.
16. The device of claim 15 , wherein the processor is configured to determine that a fourth frame was not received within a second predetermined time.
17. The device of claim 16 , wherein the processor is configured to cross-fade the third frame with the second set of samples to create a second cross-faded frame to replace the fourth frame.
18. The device of claim 17 , further comprising a speaker configured to play information using the second cross-faded frame.
19. The device of claim 11 , wherein the processor is to encode the first frame using an adaptive differential pulse-code modulation.
20. The device of claim 11 , wherein the autoregressive model includes a model order of at least 50.