Method for noise reduction, headset and terminal

Abstract

The embodiment of the invention provides a method for noise reduction, a headset and a terminal. The headset comprises noise-reducing microphones used for collecting at least two paths of noise signals; a signal processing circuit used for modulating the at least two paths of noise signals onto different spectrums so as to obtain frequency division multiplexing signals; a transmitting and receiving circuit used for transmitting the frequency division multiplexing signals to a terminal through a microphone pin of the headset and also used for receiving noise reduction signals which are transmitted by the terminal based on the frequency division multiplexing signals, wherein the noise reduction signals are used for noise reduction of the at least two paths of noise signals; and a loudspeaker used for playing the noise reduction signals transmitted by the terminal. Therefore, arrangement of a noise reduction module inside the headset is unnecessary in the embodiment of the invention, the design of the headset can be simplified on the premise of realizing the noise reduction, and the portability of the headset is consequently improved.

Description

technical field [0001] Embodiments of the present invention relate to the communication field, and more specifically, relate to a sound noise reduction method, an earphone, and a terminal. Background technique [0002] The three noise reduction measures commonly used to reduce noise are noise reduction at the sound source, noise reduction during transmission, and noise reduction at the human ear. Among them, noise reduction at the sound source is an active method. Its basic principle is: All sounds are composed of a certain frequency spectrum. If you can find a sound whose frequency spectrum is exactly the same as the noise to be eliminated, but the phase is just opposite (that is, the difference is 180°), you can cancel the noise. [0003] The key to noise reduction at the sound source is how to obtain a sound that can offset the noise. In the current technology, active noise cancellation (Active Noise Canceling, referred to as "ANC") headphones are used to achieve noise re...

AI Technical Summary

Problems solved by technology

[0005] Existing ANC earphones, because the earphones need to integrate DSP chips for generating noise reduction signals, as well as batteries and power management modules, have complex system design, high process control costs during mass production, complicated use and maintenance, and earphones. Disadvantages such as large size

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