Audio equipment, terminal equipment and electronic equipment

Abstract

An embodiment of the invention discloses audio equipment, terminal equipment and electronic equipment. The method includes a Type-C male connector, a first loudspeaker and a first noise reduction microphone; the Type-C male connector is coupled to the first noise reduction microphone through a first noise signal output pin and is coupled to the first loudspeaker through a first audio signal input pin; and under a circumstance that the Type-C male connector is inserted in and electrically connected with a Type-C female connector of a target device, the audio equipment outputs a first noise signal collected by the first noise reduction microphone to the target device through the first noise signal output pin, receives through the first audio signal input pin a first audio signal obtained after noise reduction processing is performed on the first noise signal, and transmits the first audio signal to the first loudspeaker. The structure of the noise-reduction audio equipment is simplified, cost is reduced, and the implementation scheme is simple.

Description

Technical field [0001] The present invention relates to the field of electronic technology, in particular to audio equipment, terminal equipment and electronic equipment. Background technique [0002] At present, the three noise reduction measures commonly used to reduce noise are: noise reduction at the sound source, noise reduction during propagation, and noise reduction at the human ear. Among them, only noise reduction at the sound source is an active method. Its principle is : All sounds are composed of a certain frequency spectrum. If you find a sound whose frequency spectrum is exactly the same as the noise to be eliminated, but the phase is exactly opposite (a difference of 180°), the noise can be completely cancelled out. The key to this principle It lies in how to get the sound that cancels the noise. The actual method used is to start with the noise source itself and try to reverse the phase of the original noise through electronic circuits, such as Active Noise Cancel...

AI Technical Summary

Problems solved by technology

[0003] Existing ANC earphones, in addition to the same playback speakers as ordinary earphones (for example, there is a microphone for talking / recording on the earphones for mobile phones), have added two noise-cancelling microphones on the left and right, and thus added Two signal lines; and the signal pins on the existing earphone interface have been used up, and the noise signal cannot be sent to the whole machine under the premise of ensuring the normal function of the earphone, so it is necessary to process the noise signal on the earphone side, for example, the The control chip for noise reduction (such as digital signal processing module, Digital signal processing, DSP) is built into the earphone; at the same time, it is also necessary to consider the power supply of the control (calculation) chip, such as the built-in battery, charging chip and charging interface, etc., in order to solve the above problems At present, some use a dual-interface mode of headphone jack and USB interface (for charging or DSP communication); some use a headphone jack to multiplex the charging signal with the original headset signal, and the earphone side still needs a built-in battery and charging chip. And charging interface, and the whole machine side needs to add switches, comparators, analog-to-digital converters, etc.;

[0004] In the above earphone noise reduction solutions, the collected noise signal is reversed on the earphone side to achieve noise reduction. In this way, a control chip, built-in battery, charging chip, and charging interface need to be installed on the earphone side, which is costly and complicated to implement.

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