An electronic device and a sound signal processing method for improving sound perception of a hearing-impaired user are provided. The electronic device of the present disclosure includes a sound input unit comprising sound input circuitry configured to detect a sound and to convert the sound into a first sound signal and a processor which is electrically connected to the sound input unit, the processor configured to receive the first sound signal and to perform a predetermined signal processing on the first sound signal to generate a second sound signal, wherein the signal processing includes detecting a frequency band with a level equal to or greater than a predetermined value in a first frequency band above a predetermined cutoff frequency of the first sound signal, generating harmonic signals including a plurality of frequency bins that are identical in level with a signal in the detected frequency band, and overlapping the harmonic signals with the first sound signal.

A sound leakage suppression apparatus for suppressing sound produced in a room from leaking outside thereof, includes a microphone, a display, and a processor configured to acquire information indicating sound insulation property of the room, based on the acquired information, determine a maximum volume level of sound that is permitted for each of a plurality of predetermined frequencies, control the microphone to collect sound produced in the room at a first time and determine a current volume level of the sound produced at the first time separately for each of the predetermined frequencies, and control the display to display both the maximum volume level and the current volume level for each of the predetermined frequencies.

A first input signal captured by one or more sensors associated with an ANR headphone is received. A frequency domain representation of the first input signal is computed for a set of discrete frequencies, based on which a set of parameters is generated for a digital filter disposed in an ANR signal flow path of the ANR headphone, the set of parameters being such that a loop gain of the ANR signal flow path substantially matches a target loop gain. Generating the set of parameters comprises: adjusting a response of the digital filter at frequencies (e.g., spanning between 200 Hz-5 kHz). A response of at least 3 second order sections of the digital filter is adjusted. A second input signal in the ANR signal flow path is processed using the generated set of parameters to generate an output signal for driving the electroacoustic transducer of the ANR headphone.

A method for signal processing, receiving a time domain signal having a sample-rate Fs and generating N time domain signal bands, each having a bandwidth equal to Fs/N. Receiving the N signal bands and transforming a first time domain signal band to a frequency domain at a first resolution and a second time domain signal band to the frequency domain at a second resolution, where the first resolution may be different from the second resolution. Determining one or more first filter coefficients using the frequency domain components from the first signal band and one or more second filter coefficients using the frequency domain components from the second signal band. Transforming the first and second filter coefficients from the frequency domain to a time domain. Applying the first and second time domain filter coefficients to the first and second time domain signals, respectively.

Systems and methods for enhancing a headset user’s own voice include at least two outside microphones, an inside microphone, audio input components operable to receive and process the microphone signals, a voice activity detector operable to detect speech presence and absence in the received and/or processed signals, and a cross-over module configured to generate an enhanced voice signal. The audio processing components includes a low frequency branch comprising low pass filter banks, a low frequency spatial filter, a low frequency spectral filter and an equalizer, and a high frequency branch comprising highpass filter banks, a high frequency spatial filter, and a high frequency spectral filter.

A method includes receiving a first microphone array processing signal (associated with a frequency band that includes a plurality of sub-bands) and receiving a second microphone array processing signal associated with the frequency band. The method includes generating a first output corresponding to a first sub-band based on the first microphone array processing signal and generating a second output corresponding to the first sub-band based on the second microphone array processing signal. The method includes generating a third output corresponding to a second sub-band based on the first microphone array processing signal and generating a fourth output corresponding to the second sub-band based on the second microphone array processing signal. The method includes performing a first set of microphone mixing operations to generate an adaptive mixer output for the first sub-band and performing a different set of microphone mixing operations to generate another adaptive mixer output for the second sub-band.

A frequency dependent dynamic range control method is employed in a signal emitting system characterized by lower impedance in the high frequency region. An efficient technique is implemented to dynamically estimate current spectrum and conditioning parameters to lower the current in the high frequency region. The method advantageously avoids current overloading without using a series resistor as a current limiter.

A hearing device comprises A) a forward path, comprising a1) an input unit for providing a time-domain electric input signal as digital samples, a2) an analysis filter bank configured to provide a time-frequency representation of said electric input signal, a3) a signal processing unit for processing a signal of the forward path and providing a number of processed channel-signals, B) an onset detector configured to receive said time-domain electric input signal before entering said analysis filter bank, and to provide an onset control signal dependent on a current first order derivative of an envelope thereof, C) a level estimation unit for estimating a current level of said frequency sub-band signals, and comprising c1) a level adjustment unit configured to adjust the current levels of said frequency sub-band signals, and to control said level adjustment in dependence of said onset control signal. The invention may be used in audio devices, e.g. hearing aids.

A headset device includes a first earpiece configured to receive a reference sound and to generate a first reference audio signal based on the reference sound. The headset device further includes a second earpiece configured to receive the reference sound and to generate a second reference audio signal based on the reference sound. The headset device further includes a controller coupled to the first earpiece and to the second earpiece. The controller is configured to generate a first signal and a second signal based on a phase relationship between the first reference audio signal and the second reference audio signal. The controller is further configured to output the first signal to the first earpiece and output the second signal to the second earpiece.

Wind noise reduction in microphone signals. A first microphone signal is obtained from a first omnidirectional microphone and, contemporaneously, a second microphone signal is obtained from a second omnidirectional microphone. The first and second microphone signals are mixed to produce an output signal. Mixing involves weighting the first and second microphone signals by respective first and second signal weights to produce respective first and second weighted microphone signals, and summing the first and second weighted microphone signals together to produce the output signal. The first and second signal weights are calculated to minimize the power of the output signal.