A hearing system includes one or more hearing devices configured to be worn by a user. Each hearing device includes a signal source that provides an input electrical signal representing a sound of a virtual source. A filter implements a head related transfer function (HRTF) to add spatialization cues associated with a virtual location of the virtual source to the electrical signal and outputs a filtered electrical signal that includes the spatialization cues. A speaker of the hearing device converts the filtered electrical signal into an acoustic signal and plays the acoustic signal to the user. The system includes motion tracking circuitry that tracks motion of the user as the user moves in a direction of a perceived location that the user perceives to be the virtual location of the virtual source. Head related transfer function (HRTF) individualization circuitry determines a difference between the virtual location and the perceived location in response to the motion of the user. The HRTF individualization circuitry individualizes the HRTF based on the difference.

An electronic device includes: a first external input transducer configured to capture a first sound signal that comprises a first speech part of a speech of a user and a first noise part of noise from a surrounding; an internal input transducer configured to capture a second signal, the second signal comprising a second speech part of the speech of the user, where the first speech part and the second speech part are of a same speech portion of the speech at a first time interval; and a signal processor configured to: estimate a fundamental frequency of the speech of the user at the first time interval based on the second signal; update the first model based on the estimated fundamental frequency of the speech at the first time interval; and process the first sound signal based on the updated first model to obtain the first speech part.

A pair of binaural hearing devices can dynamically assess and select a channel from a plurality of frequency channels suitable for ear-to-ear communication with each other. In various embodiments, the hearing aids can each initiate a channel assessment by calibrating a channel quality threshold and transmitting a packet including the channel quality threshold to the other hearing aid. The other hearing aid can then receive the packet, measure the quality parameter on the packet, and compare the measured value of the quality parameter to the received channel quality threshold to determine whether the channel is suitable for the ear-to-ear communication.

A user is allowed to three-dimensionally recognize environment change and noise change corresponding to the sound directionality of the left and right sides through a control parameter that is set by analyzing an audio signal received from a first smart hearing device formed on one side and a second smart hearing device formed on an opposite side.

In a method for operating a binaural hearing system having a first hearing aid and a second hearing, the first hearing aid generates a first reference signal from a sound signal by a first reference microphone and the second hearing aid generates a second reference signal from the sound signal by a second reference microphone. The first reference signal and the second reference signal are both used to derive a first binaural beamformer signal. For at least a number of frequency bands, the first reference signal is used to derive a first phase. For the number of frequency bands, a first output signal is derived from the first binaural beamformer signal and the first phase.

A hearing system includes a pair of first and second hearing devices wirelessly coupled to a remote device that includes a microphone. One or more gains can each be calculated as a function of a first microphone signal received from the first hearing device, a second microphone signal received from the second hearing device, and a remote microphone signal received from the remote device. The function can be designed to improve speech intelligibility in a noisy environment. The one or more gains are applied to the first and second microphone signals to produce output sounds by the first and second hearing devices.

A hearing aid comprises an input transducer configured to convert sound around a user to at least one electrical input signal representing the sound; an output transducer for providing an audible signal based on the at least one electrical input signal; transceiver circuitry configured to establish a wireless audio communication link with a secondary device; and a processor configured to operate the hearing aid in a system mode or a device mode. The hearing aid is configured to initiate establishment of the wireless audio communication link in dependence of a mode control signal. A non-wearable device comprising transceiver circuitry configured for establishing a wireless audio communication link with a hearing aid comprises a processor configured to receive and process at least one electrical input signal from a hearing aid to at least partially compensate for hearing impairment of a user; a power supply interface. The non-wearable device is integrated with another device having a specific other function.

A method of streaming an audio signal from an audio transmission device to first and second audio receiver devices via a Bluetooth link using a protocol that requires an audio data packet to be retransmitted if a positive packet receipt is not received. The first audio receiver device is synchronized to the audio transmission device to enable the first audio receiver device to receive an audio signal stream from the audio transmission device, the second audio receiver device is synchronized to the audio transmission device to enable the second audio receiver device to eavesdrop the audio signal stream to the first audio receiver device. When a positive packet receipt acknowledgement is not transmitted from the first audio receiver device to the audio transmission device, the audio transmission device repeats transmission of that audio data packet irrespective of whether the packet has been correctly received by the first audio receiver device.

A hearing aid comprises a resulting beam former (Y) for providing a resulting beamformed signal Y.sub.BF based on first and second electric input signals IN.sub.1 and IN.sub.2, first and second sets of complex frequency dependent weighting parameters W.sub.11(k), W.sub.12(k) and W.sub.21(k), W.sub.22(k), and a resulting complex, frequency dependent adaptation parameter β(k)•β(k) may be determined as <C.sub.2*•C.sub.1>/<(|C2|.sup.2>+c), where * denotes the complex conjugation and • denotes the statistical expectation operator, and c is a constant, and wherein said adaptive beam former filtering unit (BFU) comprises a smoothing unit for implementing said statistical expectation operator by smoothing the complex expression C.sub.2*•C.sub.1 and the real expression |C.sub.2>.sup.2 over time. Alternatively, β(k) may be determined from the following expression

[00001]$\beta =\frac{w_{C.Math..Math.1}^H.Math.C_v.Math.w_{C.Math..Math.2}}{w_{C.Math..Math.2}^H.Math.C_v.Math.w_{C.Math..Math.2}},$

where w.sub.C1 and w.sub.C2 are the beamformer weights representing the first (C.sub.1) and the second (C.sub.2) beamformers, respectively, C.sub.v is a noise covariance matrix, and H denotes Hermitian transposition. Corresponding methods of operating a hearing aid, and a hearing aid utilizing smoothing β(k) based on adaptive covariance smoothing are disclosed.

The present application provides method and apparatus for a binaural hearing assistance system using a monaural audio signal input. The system, in various examples, provides adjustable delay/phase adjustment and sound level adjustment. Different embodiments are provided for receiving the monaural signal and distributing it to a plurality of hearing assistance devices. Different relaying modes are provided. Special functions are supported, such as telecoil functions. The system also has examples that account for a head-related transfer function in providing advanced sound processing for the wearer. Other examples are provided that are described in the detailed description.