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Earphone with noise reduction having modified port

A headphone and port technology, applied in stereo communication headphones, earpiece/headphone accessories, headphones to reduce environmental noise, etc., can solve problems such as poor low frequency reproduction and low frequency reproduction

Inactive Publication Date: 2017-07-07
GN AUDIO AS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

By providing low ventilation impedance, considerably lower frequency reproduction can be obtained, while high ventilation impedance provides higher passive attenuation, but has poorer low frequency reproduction

Method used

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  • Earphone with noise reduction having modified port
  • Earphone with noise reduction having modified port
  • Earphone with noise reduction having modified port

Examples

Experimental program
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Effect test

Embodiment Construction

[0076] Figure 1a -b shows the headset 1, which is arranged on the head 2 of the user or wearer of the headset 1 in the operating position. The earphone 1 includes a housing 3 having a ring-shaped ear pad 4. When the earphone 1 is in the operating position, the housing 3 and the ear pad 4 are jointly separated in the front cavity 5 and the surrounding space 6 between the head 2 and the earphone 1. The earphone 1 is adapted to provide a sound output signal to the ear 7 of the wearer according to the earphone audio signal, and the operating position is preferably selected so that the front cavity 5 includes the ear canal 8 of the ear 7. The ear pad 4 is arranged and adapted to attenuate sound signals entering the front cavity 5 from the surrounding space 6 when the earphone 1 is in the operating position. The attenuation provided by the ear pad 4 at a frequency above 1 kHz may preferably be greater than 20 dB, greater than 10 dB, or greater than 6 dB, for example. The ear pads 4...

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PUM

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Abstract

Provided is an earphone with noise reduction having modified port. The earphone is configured to provide an acoustic output signal to an ear of a wearer in dependence on an earphone audio signal and further configured to be arranged on the wearer's head in an operating position such that a front cavity between the head and the earphone is separated from ambient space. The earphone comprises a housing having a housing wall separating a rear cavity from the front cavity and from ambient space, an ear cushion, a first diaphragm suspended across an opening in the housing wall between the front cavity and the rear cavity and configured to be actively driven. The earphone further has a port structure fluidly connecting the rear cavity and ambient space through the housing wall.The port structure having a first open end fluidly coupled to the rear cavity and a second open end fluidly coupled to ambient space, and having a port cavity defined by the first open end, the second open end and a port wall, the port wall extending from the housing wall into the rear cavity and / or into the ambient space. The port wall has one or more acoustically permeable sections fluidly connecting the port cavity with the rear cavity and / or the ambient space through the port wall.

Description

Technical field [0001] The present invention relates to a noise-reducing earphone, that is, a earphone suitable for attenuating sound noise close to the wearer's ears. The earphones can be implemented especially in earphones, headsets, hearing protectors and other hearing devices. Background technique [0002] In the art, various earphones are known that use passive noise reduction (PNR) to reduce the amount of acoustic noise reaching the wearer's ears. PNR is usually achieved by sound damping in structural elements, such as earphone housings and ear pads. It is further known to combine PNR and Active Noise Cancellation (ANC), which actively cancels sound noise close to the wearer's ears, in an attempt to eliminate and therefore remove noise from the sound reaching the ears. The ANC is usually realized by controlling the output of the driver in the earphone, so that the residual noise escaping from the PNR is cancelled. [0003] PNR is usually effective at frequencies higher tha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04R1/10
CPCH04R1/1083H04R2201/10G10K11/17861G10K11/17879H04R1/22H04R1/2823H04R1/2846H04R5/033G10K2210/1081G10K2210/3026G10K2210/3027H04R1/1008H04R1/2826
Inventor 雅各布·赖默特
Owner GN AUDIO AS