Patent classifications
H04R1/1008
Audio signal processing for noise reduction
A headphone, headphone system, and speech enhancing method is provided to enhance speech pick-up from the user of a headphone and includes receiving a plurality of signals from a set of microphones and generating a primary signal by array processing the microphone signals to steer a beam toward the user's mouth. A noise reference signal is also derived from one or more microphones via a delay-and-sum technique, and a voice estimate signal is generated by filtering the primary signal to remove components that are correlated to the noise reference signal.
Loudspeaker device
The present disclosure provides a loudspeaker device. The loudspeaker device may include an earphone core configured to transfer an electrical signal to a vibration signal; an auxiliary function module configured to receive an auxiliary signal and perform an auxiliary function; a first flexible circuit board configured to electrically connect to an audio signal wire and an auxiliary signal wire of an external control circuit, the audio signal wire and the auxiliary signal wire being electrically connected with the earphone core and the auxiliary function module, respectively through the first flexible circuit board; and a core housing configured to accommodate the earphone core, the auxiliary function module, and the first flexible circuit board. The wiring process inside the loudspeaker device provided in the present disclosure may be simplified, thereby further reducing a volume of the loudspeaker device.
Headset with membrane coupling connecting the headband to the earpieces
A headset includes an earpiece coupled to a headband with a membrane coupling. The earpiece includes an outer housing and an audio driver positioned within and coupled to the outer housing. The membrane coupling includes a membrane insert composed of a resilient material. The membrane insert is coupled to the outer housing. A connection pin may extend through a central opening of the membrane insert and into an end of the headband in order to directly couple the end of the headband to the membrane insert in order to couple the outer housing to the end of the headband. The coupling of the end of the headband to the outer housing with the membrane insert in between defines the membrane coupling. The membrane coupling is designed to allow relative movement in six degrees of freedom comprising three orthogonal degrees of translation freedom and three orthogonal degrees of rotational freedom.
ADJUSTABLE HEAD-MOUNTED DISPLAY
An adjustable head-mounted display comprises a head-mounted portion (1), a display portion (2) and a sound outputting portion (3). The display portion (2) comprises two legs (21) and a display (22), one end of each leg (21) is connected to corresponding end of the display (22), and the other end of each leg (21) is rotatably connected to an end of the head-mounted portion (1) on corresponding side. The sound outputting portion (3) comprises a left headphone and a right headphone, wherein the left headphone and the right headphone each comprises an ear cup (32), an ear cup bracket and a sound generator in the ear cup. The ear cup bracket is connected to an end of the head-mounted portion (1) on corresponding side, and the ear cup is connected to the ear cup bracket; and the head-mounted portion (1) is provided with a head-mounted portion length adjustment mechanism. By the present disclosure, the user can adjust the length upon his demand, and the universality will be improved.
HIFI SYSTEM BASED ON DIGITAL CONNECTION
The present disclosure provides a HIFI system based on digital connection, which includes an audio outputting device and a HIFI module, the audio outputting device is detachably connected with the HIFI module, when the audio outputting device is connected with the HIFI module, the audio outputting device is electrically connected with the HIFI module, the HIFI module includes a digital analog conversion circuit and a digital interface electrically connected with the digital analog conversion circuit, the digital interface transmits a received digital signal from external to the digital analog conversion circuit to be converted to an analog signal. The present disclosure only need to connect the HIFI module connected with the audio outputting device with the sound source device, and overcomes the problem that user cannot listen to the sound source due to the losing or forgetting to carry the digital analog converter.
ERGONOMIC EARPIECE WITH ATTACHMENT MOUNT
Various techniques are provided to implement and use an earpiece having an attachment mount. In one example, an earpiece includes an arcuate rib having a lobe disposed on an upper end thereof and configured to engage with a crus of a helix and an antihelix of a user's ear. The earpiece also includes a mount extending from the arcuate rib and comprising a snap clip configured to engage and position an audio device in contact with the user's ear. Other implementations and related methods are also provided.
MICROPHONE ARRAY NOISE SUPPRESSION USING NOISE FIELD ISOTROPY ESTIMATION
Noise is suppressed from a microphone array by estimating a noise field isotropy. In some examples audio is received from a plurality of microphones. A power spectral density of a beamformer output is determined and a power spectral density of microphone noise differences is determined. A noise power spectral density is determined using a transfer function and the noise power spectral density is applied to the beamformer output power spectral density to produce a power spectral density output of the received audio with reduced noise.
Audio assembly with long lever dipoles
An audio assembly provides audio content to a user. The audio assembly comprises an elongated body, a diaphragm, a transducer, and a plurality of vent assemblies. The elongated body has a first end and a second end opposite the first end. The diaphragm is within the elongated body and pivots about a pivot location that is proximate the second end. The transducer is within the elongated body and is positioned proximate to the first end. The transducer causes the diaphragm to pivot about the pivot location such that the diaphragm generates a positive acoustic pressure wave from a first surface of the diaphragm and a negative acoustic pressure wave from a second surface of the diaphragm. The plurality of vent assemblies are along one or more surfaces of the elongated body, and are configured to vent the positive acoustic pressure wave and the negative acoustic pressure wave.
UNILATERAL DUAL TRANSDUCER STEREO HEADPHONE
A headphone in which both the left and right stereo channels are contained within a single earpiece (10) and separated by vertical positioning above (12) and below (14) the ear, rather than each ear receiving one stereo channel, as in traditional headphones. This allows the listener to hear the audio content of both stereo channels with a single ear, while still being able to distinguish between the two channels. The other earpiece of the headphone may be a “dummy” (20) which contains no speaker, and the headphone can be reversed depending on which ear the user wants to listen with. Optionally, the back of each earpiece can be opened, allowing the listener to experience stereo sound in one ear while listening to his/her surroundings with the other.
Acoustically probed over-the-ear hearing assessment devices and methods
An over-the-ear hearing assessment device and a method for evaluating the performance of over-the-ear hearing devices are described. An exemplary over-the-ear hearing assessment device includes an ear cup defining an interior volume and positionable at least partially over the ear of a user. The ear cup includes a shell, a cushion, and an acoustic port extending from an exterior to the interior volume of the ear cup. The acoustic port is sealably engagable with a microphone.