Abstract:
According to one or more aspects of the present disclosure, operations may include obtaining multiple microphone signals derived from a microphone array that includes a multiple omnidirectional microphones. Each of the microphone signals may be derived from a different microphone of the microphone array. The operations may further include determining whether the microphone signals include noise, such as wind noise, based on two or more of the plurality of microphone signals. In addition, the operations may include generating an output signal based on a beamformed signal or a reduced-noise signal based on whether the microphone signals are determined to include noise.
Abstract:
A microphone device is comprises a first micro electro mechanical system (MEMS) device and a second MEMS device with difference size of pierce holes in the diaphragms. Signal outputs from the first and second MEMS devices are selectively used to provide wind noise resistance.
Abstract:
Disclosed herein are methods, systems, and devices for mitigating the impact of noise, such a low-frequency noise caused by wind, on sounds received at a hearing prosthesis. An example method includes receiving an external sound signal transduced externally to a recipient from an ambient sound and an internal sound signal transduced internally to the recipient from the ambient sound. The example method also includes determining that a triggering condition is present in the external sound signal. The triggering condition may be indicative of a condition in that more adversely affects externally-received sounds than internally-received sounds. In response to determining that the triggering condition is present in the external sound signal, the example method further includes generating a stimulation signal that is based at least in part on spectral information of the internally-transduced sound.
Abstract:
Approaches are provided for an acoustic apparatus including a base, a transducer coupled to the base, an acoustic interface assembly, and a cover disposed on the base and enclosing the acoustic interface assembly and the transducer. The cover includes a port extending through the cover. The acoustic interface assembly includes an inlet that extends from a first surface of the acoustic interface assembly to a second surface of the acoustic interface assembly. The inlet is at least partially filled with a porous material. The transducer is disposed proximal to the acoustic interface assembly such that the inlet of the acoustic interface assembly couples the transducer to the port extending through the cover.
Abstract:
A method of wind noise reduction. Left side and right side microphone signals are obtained. In a first stage wind noise reduction is applied to a first sub-band of one of the signals, below a spectral threshold NA. In a second stage the wind noise reduced first side signal, and the second side signal, are both split into a sub-band below a threshold NB less than NA. The sub-band of the first side signal is mixed with the sub-band of the second side signal to produce an aggregate third sub-band signal having reduced wind noise, which is recombined with the respective sub- bands above the threshold NB to produce output first and second side signals.
Abstract:
La présente invention concerne un microphone comprenant un transducteur (20) pour transformer des oscillations acoustiques ou vibratoires en un signal électrique; un préamplificateur (24) pour amplifier le signal électrique, et un interrupteur commandable (25) agencé électriquement entre le transducteur (20) et le préamplificateur (24), l'interrupteur (25) étant propre à être piloté par un signal de commande, le préamplificateur (24) comportant une borne d'entrée (60) connectée directement à une borne (56) du transducteur (20), le microphone étant propre à transmettre le signal électrique amplifié à un dispositif d'alimentation et de transmission (13). En outre, la présente invention concerne un masque comprenant un tel microphone.
Abstract:
A method of processing digitized microphone signal data in order to detect wind noise. First and second sets of signal samples are obtained simultaneously from two microphones. A first number of samples in the first set which are greater than a first predefined comparison threshold is determined. A second number of samples in the first set which are less than the first predefined comparison threshold is determined. A third number of samples in the second set which are greater than a second predefined comparison threshold is determined. A fourth number of samples in the second set which are less than the second predefined comparison threshold is determined. If the first number and second number differ from the third number and fourth number to an extent which exceeds a predefined detection threshold, e.g. as determined by a Chi-squared test, then an indication that wind noise is present is output.
Abstract:
An acoustic transducer comprising: at least two membranes; and at least one adjustable coupling configured to adjustably couple oscillations between a first membrane and a second membrane of the at least two membranes.
Abstract:
A device includes a windscreen in a first surface, a gradient microphone housed in a capsule having first and second outlets coupled to openings in a second surface displaced from the first surface, a pressure microphone mounted between the first and second surfaces, and circuitry coupled to the gradient microphone and the pressure microphone and operable to combine the signals of the microphones and provide a combined microphone signal.