Motion data based signal processing
A hearing aid includes an input unit, an output unit, a signal processing unit connected to said input unit and output unit, where the input unit, the signal processing unit and the output unit are forming part of a forward path of the hearing aid, where the signal processing unit is configured to apply a forward gain to the at least one electric input signal or a signal originating therefrom. The hearing aid further includes a feedback control unit configured to reduce a risk of howl due to acoustic, electrical, and/or mechanical feedback of an external feedback path from the output unit to the input unit of said hearing aid, where the hearing aid is configured to receive motion data characterising movement and/or acceleration and/or orientation and/or position of the hearing aid to control processing.
1 . A hearing aid configured to be worn by a hearing aid user at or in an ear of the hearing aid user, the hearing aid comprising:
an input unit configured to receive an input sound signal from an environment of a hearing aid user and to provide at least one electric input signal representing said input sound signal,
an output unit configured to provide at least one set of stimuli perceivable as sound to the hearing aid user based on a processed version of said at least one electric input signal,
a feedback control unit configured to reduce a risk of howl due to acoustic, electrical, and/or mechanical feedback of an external feedback path from the output unit to the input unit of said hearing aid,
wherein the hearing aid is configured to receive motion data characterising movement and/or acceleration and/or orientation and/or position of the hearing aid, and is configured to determine the hearing aid or feedback control unit as being in one of a plurality of different modes comprising a head movement mode, a conversation mode, an active mode, a jaw movement mode, and a playing instruments mode, and
wherein the hearing aid is configured to control processing of the feedback control unit based on the received motion data.
2 . The hearing aid according to claim 1 , wherein the hearing aid is configured to control processing of the signal processing unit based on the received motion data.
3 . The hearing aid according to claim 2 , wherein the hearing aid further comprises a control unit, and wherein the control unit is configured to control said processing of the feedback control unit and/or of said signal processing unit based on the received motion data.
4 . The hearing aid according to claim 1 , wherein the hearing aid further comprises a control unit, and wherein the control unit is configured to control said processing of the feedback control unit and/or of said signal processing unit based on the received motion data.
5 . The hearing aid according to claim 4 , wherein the control unit is configured to determine the hearing aid as being in one of a plurality of different modes based on the received motion data.
6 . The hearing aid according to claim 5 , wherein the hearing aid is configured to control said processing of the feedback control unit based on said determined mode of the hearing aid.
7 . The hearing aid according to claim 6 , wherein said determination of the hearing aid as being in one of a plurality of different modes comprises determination of the hearing aid as being in one of one or more of the following pluralities of different modes:
head movement mode,
conversation mode,
active mode,
jaw movement mode, and
playing instruments mode.
8 . The hearing aid according to claim 5 , wherein the control unit is configured to control said processing of the feedback control unit based on said determined mode of the hearing aid.
9 . The hearing aid according to claim 8 , wherein said determination of the hearing aid as being in one of a plurality of different modes comprises determination of the hearing aid as being in one of one or more of the following pluralities of different modes:
head movement mode,
conversation mode,
active mode,
jaw movement mode, and
playing instruments mode.
10 . The hearing aid according to claim 5 , wherein said determination of the hearing aid as being in one of a plurality of different modes comprises determination of the hearing aid as being in one of one or more of the following pluralities of different modes:
head movement mode,
conversation mode,
active mode,
jaw movement mode, and
playing instruments mode.
11 . The hearing aid according to claim 5 , wherein the feedback control unit comprises a feedback cancellation unit comprising an adaptive filter, and wherein the feedback control unit is configured to increase and/or decrease the adaptation speed of the adaptive filter based on said determined mode.
12 . The hearing aid according to claim 4 , wherein the feedback control unit is configured to determine its mode based on the received motion data.
13 . The hearing aid according to claim 1 , wherein the hearing aid further comprises at least one motion detector configured to provide said motion data.
14 . The hearing aid according to claim 1 , wherein the feedback control unit comprises a feedback reduction unit configured to modulate said forward gain in time.
15 . A hearing system comprising left and right hearing aids, each of the left and right hearing aids being configured as the hearing aid according to claim 1 , wherein the left and right hearing aids are configured to be worn in or at left and right ears, respectively, of said hearing aid user, and are configured to establish a wired or wireless connection between them allowing data to be exchanged between them.
16 . The hearing system according to claim 15 , wherein the hearing system further comprises an auxiliary device, and wherein the hearing system is configured to establish a communication link between the hearing aids and the auxiliary device to provide that information can be exchanged or forwarded from one to the other.
17 . The hearing system according to claim 16 , wherein the auxiliary device comprises at least one motion detector configured to provide said motion data and/or comprises a control unit configured to control said processing of the feedback control unit and/or of said signal processing unit based on the received motion data.
18 . A method of processing an electric signal representing sound, the method comprising:
receiving an input sound signal from an environment of a hearing aid user and providing at least one electric input signal representing said input sound signal, by an input unit,
providing at least one set of stimuli perceivable as sound to the hearing aid user based on a processed version of said at least one electric input signal, by an output unit,
wherein the hearing aid comprises a feedback control unit for reducing a risk of howl due to acoustic, electrical, or mechanical feedback of an external feedback path from the output unit to the input unit of said hearing aid,
receiving motion data characterising movement and/or acceleration and/or orientation and/or position of the hearing aid,
determining the hearing aid or feedback control unit as being in one of a plurality of different modes comprising a head movement mode, a conversation mode, an active mode, a jaw movement mode, and a playing instruments mode, and
controlling processing of the feedback control unit based on the received motion data.