Active noise reduction in-ear type earphone

An active noise reduction, in-ear technology, applied in the field of communication, can solve the problems affecting the noise reduction effect and channel inconsistency, and achieve good noise reduction effect, reduce living noise, and strong environmental adaptability

Pending Publication Date: 2017-02-22
FUJIKON INDAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional structure of setting the front cavity vent on the shell corresponding to the pronunciation surface of the pronunciation unit, when the noise comes from different directions, the passage of the noise into

Method used

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  • Active noise reduction in-ear type earphone
  • Active noise reduction in-ear type earphone
  • Active noise reduction in-ear type earphone

Examples

Experimental program
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Example Embodiment

[0025] The present invention will be further described in detail below in conjunction with the drawings and specific embodiments.

[0026] In this embodiment, refer to Figure 4 ~ Figure 8 , The active noise reduction in-ear earphones implemented in this embodiment include an earphone housing. The earphone housing of this embodiment includes an upper housing 1 and a lower housing 2. The upper housing 1 and the lower housing 2 are paired and buckled. Such as Figure 4~6 As shown, a sounding unit 3 and a control circuit (not shown) are installed inside the earphone shell. The sounding unit 3 of this embodiment is a fidelity high-pitched horn, the control circuit is connected to the sounding unit 3, and the sounding unit 3 is connected to an audio signal Transmission line (not shown), the earphone shell is provided with a rear cavity, a middle cavity and a front cavity. The rear cavity is located on the top of the earphone shell. A feedforward microphone 4 is installed laterally in ...

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PUM

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Abstract

The invention relates to an active noise reduction in-ear type earphone, and relates to the technical field of communication. The active noise reduction in-ear type earphone comprises an earphone shell, a rear cavity, an intermediate cavity and a front cavity are arranged in the earphone shell, a feedforward microphone is arranged in the rear cavity in a transverse manner, the bottom of the front cavity is a sound outlet used for transmitting sounds, a feedback microphone is arranged in the front cavity, the earphone shell is also provided with a front cavity air vent hole communicating with the front cavity, the front cavity air vent hole is located on the earphone shell with the same direction of a feedforward sound-receiving port, and an included angle between the central axis of the front cavity air vent hole and the central axis of the feedforward sound-receiving port is less than 90 degrees. Compared with the conventional earphone, noises enter the earphone from the front cavity air vent hole, when the noises entering the front cavity air vent hole are from different directions, channels from which the noises enter an ear canal are more consistent, the changes of the active noise reduction performance are more consistent in high frequency, and the filter targets of different noises entering the front cavity air vent hole from different directions are more consistent.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to an earphone, in particular to an active noise reduction in-ear earphone. Background technique [0002] Commonly used earphones are mainly composed of four parts: headband, sounding unit, earmuffs and lead wires; the headband is used to fix the earmuffs on the ears, and the lead wires are used to transmit audio signals from the speaker to the sounding unit, and the sounding unit is set on Inside the earmuffs. Existing headphones usually have a noise reduction function, and a microphone is installed outside the left and right earmuffs to collect sound samples. When the external noise is more diverse and changeable, each earmuff has only one sampling microphone that collects all noise The direction of noise sampling is narrow and imprecise, which makes it impossible to achieve high-quality noise reduction. In order to solve the above-mentioned defects of earphones, there is ...

Claims

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Application Information

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IPC IPC(8): H04R1/10H04R3/00
CPCH04R1/1058H04R3/00H04R2201/105H04R2410/01
Inventor 杨少聪
Owner FUJIKON INDAL
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