摘要:
A headset for voice communication is disclosed, the headset comprising at least one earphone having a speaker and one or more microphones. The headset is configured to be operated in a first mode in which an electronic noise cancelling circuit is configured to receive ambient audio via at least a first of the one or more microphones to implement an active noise cancelling function and to provide a noise cancelling audio signal to the speaker, and in a second mode in which ambient audio is provided as a hear-through audio signal to the speaker. The headset for voice communication is configured to detect whether a call is ongoing, and to provide a call signal in response to the detection. The headset comprises the electronic noise cancelling circuit, a voice activity detection unit configured to indicate when a user speaks, a switching element configured to switch the headset between operating in the first mode and operating in the second mode, wherein, when the headset is operated in the first mode and the call signal indicates that the user is not in a call, the switching element is configured to switch the headset from operating in the first mode to operating in the second mode when the voice activity detection unit indicates that the user speaks.
摘要:
A method for noise cancellation. The method includes providing a sound signal output device having a listening device output, a microphone input, and signal processing circuitry. The signal processing circuitry is adapted for causing the sound signal output device to perform in a noise-cancellation mode, including making available to the sound signal output device, at the microphone input, a noise-containing signal which is representative of ambient acoustical noise, deriving a noise-cancelling signal from the noise-containing signal, and making available to the personal listening device, at the listening device output, the noise-cancelling signal.
摘要:
A method, system, and apparatus for noise cancelation is disclosed herein, which may be used in a wireless unit (WU) and a headset removably connected to the WU. The WU may include a processor, a memory, a user interface, internal microphones and internal speakers. The headset may include microphones and speakers, and be powered by the WU. The WU may receive an ambient noise at microphone(s), including a headset microphone, which may generate a signal based on the ambient noise. The WU processor may then calculate an estimate of the ambient noise based on the signal, calculate an inverse of the estimated ambient noise based on the estimate of the ambient noise, cancel the estimated ambient noise from an audio output signal based on the application of the inverse of the estimated ambient noise, and send the audio output signal to the speakers of the headset or the WU.
摘要:
Headphones or a headset to enable active noise cancellation or binaural recording. Microphone signals are multiplexed within the headphones/headset and are conveyed to an attached device using a single contact point in the audio plug. The audio plug may be a conventional four connector audio plug to provide backwards compatibility. The multiplexing is analog multiplexing, and may be time-domain or frequency-domain multiplexing.
摘要:
There is provided a headphone device including a first housing and a second housing; a headband connected to the first and second housings; a first headphone unit and a second headphone unit disposed in the first and second housings, respectively; a first microphone and a second microphone arranged in the vicinity of the first and second headphone units; and a signal processing unit disposed in the first housing for processing input audio signals from the outside and microphone signals detected by the first and second microphones, and generating first and second noise-canceled audio signals to be supplied to the first and second headphone units.
摘要:
Headphones or a headset to enable active noise cancellation or binaural recording. Microphone signals are multiplexed within the headphones/headset and are conveyed to an attached device using a single contact point in the audio plug. The audio plug may be a conventional four connector audio plug to provide backwards compatibility. The multiplexing is analog multiplexing, and may be time-domain or frequency-domain multiplexing.
摘要:
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.
摘要:
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.
摘要:
A central noise reduction loudspeaker includes a speaker unit, a top cap, a seat body, and a microphone. The speaker unit includes a diaphragm, and the diaphragm includes a central through hole located at center of the diaphragm. The top cap covers the seat body, and the speaker unit is disposed between the top cap and the seat body. The top cap includes a central fixed frame penetrating the central through hole of the diaphragm. The microphone is disposed within the central fixed frame and located in the central through hole. Since the microphone is disposed in central through hole, compared to conventional, the front cavity and the overall size of the loudspeaker or earphone can be reduced and the production process can be simplified.
摘要:
The invention provides earphones that provide a user with a choice of selectable, stable positions from which a wire exits the earphone. When the wire exits in an “up” position, it favors winding over the ear to a source or transmitter of electrical sound information. When the wire exits in a “down” position, it does not favor winding over the ear. The wire exits the earphone about parallel to the side of the user's face so that it does not protrude in an unsightly or unstable manner.