A method for automatically detecting audio feedback in an input audio signal includes separately filtering the audio input signal with a plurality of separate analysis audio filters to generate a plurality of filtered audio signals. The separate analysis audio filters are different. Then, comparing at least two of the filtered audio signals to obtain an energy level difference. Performing one or more repetitions of the steps of filtering and comparing to establish a plurality of the energy level differences. Then comparing energy level differences from at least two of the repetitions to detect the audio feedback. The method includes features of automatically performing audio feedback suppression of the detected audio feedback.

The disclosure relates to a hearing device comprising a housing accommodating an acoustic transducer inside an inner volume of the housing, the acoustic transducer having an oscillator element configured to generate sound waves, the housing accommodating the acoustic transducer inside an inner volume of the housing. The hearing device further comprises a sound outlet configured to release sound waves from the inner volume into an ear canal. The hearing device may also comprise a microphone configured to be acoustically coupled to the ear canal, and an active feedback control circuit configured to provide an active feedback control signal to modify the sound waves generated by the acoustic transducer.

An audio system for artificial reality systems is configured to reduce feedback and mitigate entrainment in audio content presented to the user. The audio system utilizes adaptive feedback cancellation processes to reduce feedback. The audio system processes reference signals in a hybrid of the time domain and the frequency domain to achieve rapid convergence with decreased entrainment. The audio system may pre-whiten reference signals and speaker signals and separate the pre-whitened signals into frequency bands using a filter bank. The audio system uses a state space algorithm to generate adaptive filters in each frequency band. The adaptive filters may be applied to the speaker signal to generate a feedback cancelation signal which may be subtracted from the reference signal to decrease feedback.

A method performed by a hearing device comprising a first housing, a microphone, a speaker, and a first control system configured to control an active vent, the active vent comprising a vent canal and a valve member configured to block the vent canal when the active vent is in the closed state, and to allow passage of air through the vent canal when the active vent is in the open state, comprising: emitting an acoustic signal from the speaker; measuring a first transfer function of an acoustic feedback path between the speaker and the microphone when the active vent is expected to be in the open state; measuring a second transfer function of the acoustic feedback path when the active vent is expected to be in the closed state; and determining a status of the active vent based at least on the first and second measured transfer functions.

The headphones (10) comprise:

a transducer (16) (12);

an noise-canceling processing chain (30, 40) comprising: a microphone (31, 41); a noise-canceling processing filter (34, 44) which comprises in series: a stabilisation filter (34A, 44A) whose transfer function is substantially equal to the inverse of the transfer function of the processed secondary path, and a noise cancellation filter (34B, 44B) whose transfer function is a noise cancellation transfer function.

The secondary path is formed between the transducer (16) and the eardrum, and

the transfer function of the processed secondary path is the transfer function of the secondary path combined with the transfer functions of the processing components, excluding the processing filter (34, 44).

A method operates a hearing aid having a housing insertable into an outer auditory canal and has proximal and distal sides. The proximal side is oriented toward an eardrum and includes a proximal input transducer, and a distal input transducer is disposed on the distal side. An output transducer is disposed on the proximal side and an adjustable vent penetrates the housing. An evaluation unit is provided, and an adjustment process is carried out to adjust the vent. In the course of the adjustment process, a set of transmission functions is determined by the evaluation unit, and includes a distal transmission function, which maps a signal path from the output transducer to the distal input transducer, and a proximal transmission function, which maps a signal path from the output transducer to the proximal input transducer.

A method for operating a hearing aid, in particular a hearing aid device, which includes a directional microphone, an interference noise suppression unit, and a receiver for outputting an output sound. Sound is acquired from a preferred direction and conducted to the interference noise suppression unit by way of the directional microphone. A counter sound signal is created and conducted to the receiver by the interference noise suppression unit. The counter sound signal is output as output sound by way of the receiver. The counter sound signal is created in such a way that upon superposition of the output sound with the sound, destructive acoustic interference at least partially takes place. There is also described a hearing aid and the use of a hearing aid.

A hearing device comprises an input transducer providing an input gain G.sub.I, a signal processor comprising a compressor for determining a frequency and level dependent desired compressor gain G.sub.P to compensate for a hearing impairment of the user, and to provide a resulting compressor gain G′.sub.P, and an output transducer for providing output stimuli perceivable as sound for the user based on a processed signal, the output transducer providing an output gain, G.sub.O. A resulting forward path gain G′ is defined in a logarithmic representation as G.sub.I+G′.sub.P+G.sub.O. The hearing device further comprises a loop gain estimator for continuously estimating a current loop gain ΔL(n), configured to provide a loop gain estimate within a predefined number of feedback loop delays after a feedback buildup has started, and a loop gain controller for dynamically controlling said resulting forward path gain G′ in dependence of said estimate of said current loop gain ΔL(n). A resulting loop gain, LG′, is determined as a sum of the resulting forward path gain G′ and a feedback gain H when given in a logarithmic representation. The loop gain controller is configured to provide that the resulting loop gain is limited to stay below a predefined value.

An exemplary system includes a memory storing instructions and a processor communicatively coupled to the memory. The processor is configured to execute the instructions to concurrently present, within a graphical user interface displayed by a display device, a gain limit curve and a target gain curve representing a target gain profile for the useable gain by a hearing device across a range of frequencies, the target gain curve corresponding to a first sound input level and initially having an amplitude greater than an amplitude of the gain limit curve within a subset of frequencies included in the range of frequencies. The processor is further configured to detect user input representative of a request to increase the amplitude of the gain limit curve, increase a portion of the gain limit curve, and update the gain limit profile in accordance with the increased portion of the gain limit curve.

A hearing aid device is disclosed. The hearing aid device comprises means to improve, augment and/or protect the hearing capability of a user by receiving acoustic signals from the surroundings of the user, generating corresponding audio signals, possibly modifying the audio signals and providing the possibly modified audio signals as audible signals to at least one of the user's ears. The hearing aid device comprises a sensor member for detecting the movement and/or acceleration and/or orientation (or spatial position) of the hearing aid device. The hearing aid device comprises at least two hearing aid microphones and a control unit for determining the position or a deviation from an intended position of the hearing aid device or hearing aid microphones. The hearing aid device is configured to compensate for a possible dislocation of the hearing aid microphones.