50 results about "Noise-cancelling headphones" patented technology

Batteryless noise canceling headphones include a first earpiece having a first speaker for providing a first audio output to a first ear of a user in response to a first audio output signal, and having a first microphone element for converting a first ambient audio input at the first ear into a first ambient audio input signal in response to a bias voltage. A connector receives the bias voltage from an audio device, receives the first audio output signal from the audio device, and provides the first ambient audio signal to the audio device.

A noise canceling headphone includes a microphone provided in a headphone housing, collecting external sound, a canceling signal generating circuit generating a canceling signal in response to a signal output from the microphone which cancels external sound passing through the housing without being attenuated by a sound insulating characteristic of the headphone, a compensating signal generating circuit generating a compensating signal that compensates for the external sound attenuated by the sound insulating characteristic of the headphone, an adding circuit that adds a musical signal input from the exterior to the compensating signal, and a speaker unit that outputs an output signal from the adding circuit and the canceling signal.

A noise-canceling headphone that cancels external noise with a feedforward system includes a driver unit disposed in a housing, a microphone unit that is outwardly disposed in the housing and collects the external noise, and canceling signal generator that generates a noise-canceling signal having a phase opposite to the noise entering through the headphone. The noise-canceling headphone includes an error detecting microphone unit that detects error noise uncanceled by the feedforward system, and error noise-canceling signal generator that generates an error correction signal to cancel the error noise with a feedback system.

An apparatus and method for powering headphone electronics over a standard audio signal cable without interfering with the normal audio transmission or playback of transmitted audio signals. A software application resides on a cell/smart phone or other mobile device that combines the nominal audio output of such a mobile device, like music or spoken word, with a high frequency audio signal to produce a dual component signal. The high frequency component is decoded and rectified outside of the mobile device, either in a connector or on the structure of the headphones themselves, to produce a direct current (“DC”) that powers the headphones. The music or other audible signal component transferred over the audio cable is decoded in parallel and sent to the headphone speakers for normal playback. The invention provides an alternative power source to headphone electronics such as active noise cancelling headphones over the audio cable.

A noise-cancelling headphone includes a cancel signal generator that receives ambient noise via an electro-acoustic transducer and generates and outputs a cancel signal eliminating the noise and a speaker unit that outputs an audio signal and a cancel signal, and connects the cancel signal generator to a first terminal of two input terminals of the speaker unit and connects a sound source of an audio signal to a second terminal thereof, whereby obtaining the noise-cancelling headphone with which one can enjoy music with high quality without the change in the sound quality and volume between when a noise-cancelling function is activated and when deactivated.

The invention relates to a noise cancelling control method and a relevant device. The method comprises the following steps: the target scene type of a current scene is identified through media equipment; a target noise cancelling algorithm matching the target scene type is determined according to a preset corresponding relation; a noise cancelling control instruction is generated according to the target noise cancelling algorithm; and the noise cancelling control instruction is sent to a headphone connected with the media equipment. Thus, the headphone can be switched to the noise cancelling algorithm matching the current scene through the noise cancelling control instruction, and the noise cancelling effect of the headphone can achieve the best under the current scene. Compared with the existing noise cancelling headphone which cancels noise according to a fixed noise cancelling algorithm, in the embodiment of the invention, the headphone can be switched to different noise cancelling algorithms according to different application scenes, so that the noise cancelling demands under different application scenes are satisfied, and an optimal noise cancelling effect is achieved.

An invention is described for a personal noise canceling system that consists of noise canceling headphones, a noise cancellation electronics module and a personal computing device. One embodiment of the invention places the noise canceling electronics module in a USB connector fob, which serves as a personal computing device, and also acts as the connection interface between the headphones and a complementary computing device. Another embodiment places the noise canceling electronics module within a decoupled personal computing device where built in audio electronics, software, firmware and power source may be leveraged for implementation of signal conditioning and processing in support of noise cancellation. It is envisioned that desirable audio signals may be injected into the noise cancellation system from a variety of sources, including but not limited to, the USB connector fob (such as digital music audio), a complementary computing device (such as DVD sound track) or an external audio source (such as airline audio channel).

A noise cancelling headphone includes a headphone body, a audio player and a central processing unit. The headphone body includes a headband, a first speaker unit and a second speaker unit. The elongated headband is bent and shaped to fittedly and adjustably wear on a user's head, wherein the headband has a first and a second end portion. The first speaker unit and the second speaker unit are attached on the first and the second end portion of the headband respectively. The audio player is provided on the headphone body, and is arranged to read a predetermined kind of audio signals. The central processing unit is received in the headphone body, and is arranged to process the audio signals outputted from the audio player and drive the first speaker unit and the second speaker unit to generate corresponding audible sound.

A multi-loudspeaker active noise cancelling headphone that can provide stereo effect and improve the performance of ambient noise reduction employs an active noise reduction circuit to collaborate with a plurality of speakers and a design to generate a multilayer phase difference feedback audio signal in the earmuffs of the headphone to improve the performance of noise reduction efficacy and generate stereo effect for music so that through the speakers of a lower cost and in a medium quality, and individual filters and signal compensation music with spatial sense and a sense of depth can be generated.

The invention relates to the technical field of an earphone, especially to a head-mounted noise-cancelling headphone comprising an active noise reduction capsule arranged inside a case of the head-mounted noise-cancelling headphone. The active noise reduction capsule includes a housing having a front shell and a rear shell; and the front shell and the rear shell are buckled mutually to form a sealed cavity. Besides, the active noise reduction capsule also includes a loudspeaker, a microphone, and a damping fin; the loudspeaker assembled at the back of the front shell is arranged inside the sealed cavity; the microphone installed at the front side of the front shell is arranged outside the sealed cavity; and the damping fin installed on the rear shell is used for adjusting an audio curve and the tone quality. The invention aims at providing a head-mounted noise-cancelling headphone, so that a technical problem that the noise cancelling effect of the existing noise-cancelling headphone is affected because of different sound cavities of the left ear and the right ear can be solved.

A handheld electronic apparatus including a connecting interface, a switching circuit and a control circuit is provided. A corresponding noise-canceling headphone including a connecting interface, a microphone, two speakers and a noise-canceling circuit is also provided. When a headphone is electrically connected to the handheld electronic apparatus and the control circuit determines that the headphone is the noise-canceling headphone, then the control circuit provides an working voltage to the noise-canceling headphone through different circuit paths by controlling the switching circuit.

The invention provides a hearing testing system and method to improve the accuracy of hearing testing and lower the operation difficulty of hearing testing. The system comprises noise-canceling headphones (1) with a self-calibration function, an intelligent terminal (2) and hearing testing application software (3). The hearing testing method based on the hearing testing system comprises the steps that 1, self-calibration is conducted on the noise-canceling headphones with the self-calibration function; 2, the noise-canceling headphones with the self-calibration function is connected with the intelligent terminal, and a noise-canceling function is started; 3, hearing testing is conducted by means of the hearing testing application software located in the intelligent terminal. According to the hearing testing system and method, implementation and operation are easy, and the testing result is accurate and credible.

A product for detecting people approaching an isolated user, discouraging the detected people from disturbing the user, and for taking messages from the approaching people. The product may be embodied in noise-canceling headphones that the user is wearing, for example. The product can include a camera and a microphone that can detect approaching people. The product can also include an externally-facing speaker that can play an audio message to the approaching person to attempt to discourage the person from disturbing the user. The product can also prompt the person to leave a message for the user and then record the subsequent message. The user can review the message at a later time.

The invention relates to the field of earphones, and particularly relates to an anti-noise earphone. The anti-noise earphone provided by the invention comprises a shell, an ear plug, a loudspeaker unit, a first microphone and a second microphone. The shell comprises a sound tube and a cavity; the sound tube has a first end and a second end, which are opposite to each other; the first end of the sound tube is provided with a sound outlet, and the cavity is connected to the second end of the sound tube; the ear plug is sleeved on the sound tube, and the ear plug has an accommodating space for accommodating the sound tube; the loudspeaker unit and the first microphone are disposed in the sound tube and are located in the accommodating space of the ear plug; and the second microphone is disposed in the cavity. By adoption of the configuration mode, the noise can be collected more comprehensively, and the miniaturization requirements of the earphone can be met.

The invention discloses an active anti-noise earphone. The active anti-noise earphone comprises earmuffs and active noise control devices; the active noise control devices are detachably arranged on the earmuffs; a voice frequency signal receiving unit and a loudspeaking unit are arranged in each earmuff; each active noise control device comprises a noise sensing unit and a noise processing unit; the voice frequency signal receiving unit is used for receiving and transmitting voice frequency signals to the loudspeaking unit which gives out the voice frequency signals; the noise sensing unit is used for detecting and transmitting environmental noises to the noise processing unit; the noise processing unit is used for outputting noise cancellation signals to the loudspeaking unit; the noise cancellation signals and outside noise signals counteract with each other; and the loudspeaking unit only transmits the voice signals received by the signal receiving unit. The active anti-noise earphone is simple in structure and has a good anti-noise effect.