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Noise reduction method for noise reduction earphones

A noise-cancelling headphone and noise-cancelling technology, applied in the direction of headphones to reduce environmental noise, earpiece/headphone accessories, etc., can solve the problems of high power consumption of the headphone amplifier circuit and difficulty in external noise, and achieve power reduction, high-precision playback effect, guarantee The effect of the playback effect

Active Publication Date: 2019-04-26
上海悟品科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the noise isolation design makes it difficult to cancel the external noise that needs to be received, and when the ambient noise level is small, this way of working will cause the headphone amplifier circuit in the noise cancellation circuit to consume a lot of power all the time

Method used

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  • Noise reduction method for noise reduction earphones
  • Noise reduction method for noise reduction earphones
  • Noise reduction method for noise reduction earphones

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Such as figure 2 As shown in , in the earphone 10 , a main housing 2 as a main part of the earphone 10 , a front housing 3 , an ear canal tube 31 attached to the front housing, and an earplug 4 are included.

[0024] The ear canal tube 31 is a tubular extension, and the earplug 4 is attached to the ear canal tube 31. In particular, there is an annular protrusion 32 on the outer periphery of the ear canal tube 31. When the earplug 4 is fitted with the ear canal tube 31 , to prevent the earplug nested on the ear canal tube 31 from slipping out easily.

[0025] The earplug 4 has a cylindrical member 41 nested on the ear canal tube 31 , and a spacer member 42 folded back from the front end of the cylindrical member 41 . In particular, the insulating part 42 is formed into a soft hemispherical shape, and after the earplug 4 is inserted into the external auditory canal of the human ear, it can closely contact with the external auditory canal to prevent sound leakage and enh...

Embodiment 2

[0039] Such as figure 2 As shown, different from that in Embodiment 1, the first space S1 and the second space S2 are arranged in parallel.

[0040] Alternatively, the door of the adjustment hole 9 can also be realized by means of an electric switch door. The electric switch can be actuated by a tiny piezoelectric element. Specifically, outside the adjustment hole 9 is a fixed baffle, which has many micro-holes; in the adjustment hole, a movable baffle 96 is arranged close to the fixed baffle, and the movable baffle 96 is correspondingly arranged. There are many micro-holes, and the movable baffle can be moved linearly or rotated along a certain direction (such as left or clockwise) on the surface of the fixed baffle, so that the micro-holes of the two baffles are dislocated, and the The non-microporous part blocks the micropores of the fixed baffle. The piezoelectric element 95 is connected with the movable baffle 96 and can directly drive the movable baffle 96 to move. Th...

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Abstract

The present invention relates to a noise reduction method of noise reduction earphones. The noise reduction earphones comprise a main housing, a front housing and a noise elimination circuit which form the main body portion of the earphones, an independent first space S1 and an independent second space S2 are formed between the main housing and the front housing, and a regulation hole, a noise measurement device and a regulation hole control device are arranged on the wall of the main housing corresponding to the second space S2. The method comprises the following steps: measuring the noise value of the environment through the noise measurement device, and transmitting the measurement result to the regulation hole control device; the regulation hole control device receives and compare with a measurement value, determines the size of the noise value of the external environment and performs corresponding regulation of the regulation hole, and a microphone arranged in the second space S2 receives the noise of the external environment through the regulation hole; and the microphone receives electric signals generated by noise, converts the electric signals to sound wave signals through the noise elimination circuit and an amplifier and feeds the sound wave signals to the earphones to allow the earphones to ensure the high-precision play effect in various environments.

Description

technical field [0001] The invention relates to the field of audio equipment, in particular to a noise reduction method suitable for audio equipment. Background technique [0002] Audio equipment, typically earphones, has become one of the necessary accessories for portable electronic equipment, such as mobile phones, PDAs, and personal computers. Generally, the structure of the earphone includes: an earphone plug, which is used to receive electronic signals; and a speaker, which is used to convert the audio signal output by the electronic device into sound output. With the popularization of mobile communication technology, a corresponding microphone function needs to be added on the earphone, so that the user can realize the call function. [0003] At present, the noise reduction design of earphones is usually realized through feedback. Usually, the design goal is given, and a certain optimization design method is applied to obtain the optimized controller frequency charac...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04R1/10
CPCH04R1/1083
Inventor 华峰君
Owner 上海悟品科技有限公司
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