Method of estimating weighting function of audio signals in a hearing aid
First Claim
1. A method of generating an audible signal in a hearing aid by estimating a weighting function of received audio signals, the hearing aid is adapted to be worn by a user;
- the method comprises the steps of;
estimating a directional signal by estimating a weighted sum of two or more microphone signals from two or more microphones, where a first microphone of the two or more microphones is a front microphone, and where a second microphone of the two or more microphones is a rear microphone;
estimating a direction-dependent time-frequency gain, andsynthesizing an output signal;
wherein estimating the direction-dependent time-frequency gain comprises;
obtaining at least two directional signals each containing a time-frequency representation of a target signal and a noise signal; and
where a first of the directional signals is defined as a front aiming signal, and where a second of the directional signals is defined as a rear aiming signal;
using the time-frequency representation of the target signal and the noise signal to estimate a time-frequency mask; and
using the estimated time-frequency mask to estimate the direction-dependent time-frequency gain.
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Abstract
Disclosed is method of generating an audible signal in a hearing aid by estimating a weighting function of received audio signals, the hearing aid is adapted to be worn by a user; the method comprises the steps of:
estimating a directional signal by estimating a weighted sum of two or more microphone signals from two or more microphones, where a first microphone of the two or more microphones is a front microphone, and where a second microphone of the two or more microphones is a rear microphone;
estimating a direction-dependent time-frequency gain, and synthesizing an output signal;
wherein estimating the direction-dependent time-frequency gain comprises:
- obtaining at least two directional signals each containing a time-frequency representation of a target signal and a noise signal; and where a first of the directional signals is defined as a front aiming signal, and where a second of the directional signals is defined as a rear aiming signal;
- using the time-frequency representation of the target signal and the noise signal to estimate a time-frequency mask; and
- using the estimated time-frequency mask to estimate the direction-dependent time-frequency gain.
48 Citations
42 Claims
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1. A method of generating an audible signal in a hearing aid by estimating a weighting function of received audio signals, the hearing aid is adapted to be worn by a user;
- the method comprises the steps of;
estimating a directional signal by estimating a weighted sum of two or more microphone signals from two or more microphones, where a first microphone of the two or more microphones is a front microphone, and where a second microphone of the two or more microphones is a rear microphone; estimating a direction-dependent time-frequency gain, and synthesizing an output signal; wherein estimating the direction-dependent time-frequency gain comprises; obtaining at least two directional signals each containing a time-frequency representation of a target signal and a noise signal; and
where a first of the directional signals is defined as a front aiming signal, and where a second of the directional signals is defined as a rear aiming signal;using the time-frequency representation of the target signal and the noise signal to estimate a time-frequency mask; and using the estimated time-frequency mask to estimate the direction-dependent time-frequency gain. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 39, 40, 41, 42)
- the method comprises the steps of;
- 18. A hearing aid adapted to be worn by a user, the hearing aid comprises one or more microphones, a signal processing unit, and one or more output transducers, wherein a first module comprises at least one of the one or more microphones.
Specification