WO2022188249A1 - 降噪装置及降噪耳机 - Google Patents
降噪装置及降噪耳机 Download PDFInfo
- Publication number
- WO2022188249A1 WO2022188249A1 PCT/CN2021/090325 CN2021090325W WO2022188249A1 WO 2022188249 A1 WO2022188249 A1 WO 2022188249A1 CN 2021090325 W CN2021090325 W CN 2021090325W WO 2022188249 A1 WO2022188249 A1 WO 2022188249A1
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- Prior art keywords
- channel
- sound
- noise reduction
- ear
- noise
- Prior art date
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- 230000009467 reduction Effects 0.000 title claims abstract description 89
- 230000002708 enhancing effect Effects 0.000 claims abstract description 5
- 239000011358 absorbing material Substances 0.000 claims description 7
- 230000000644 propagated effect Effects 0.000 claims description 5
- 230000001902 propagating effect Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 33
- 238000001914 filtration Methods 0.000 abstract description 3
- 238000013016 damping Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 125000006850 spacer group Chemical group 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000002238 attenuated effect Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 210000000613 ear canal Anatomy 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
Definitions
- the present invention relates to the technical field of electronic products, in particular to a noise reduction device and a noise reduction earphone.
- noise-cancelling headphones with noise-cancelling function are more likely to be favored by people.
- noise reduction headphones there are mainly two noise reduction methods for noise reduction headphones, one is active noise reduction and the other is passive noise reduction.
- active noise reduction requires the circuit to work, but the setting of the circuit will cause the volume of the headset to become larger, which is not suitable for users to wear.
- passive noise reduction method the main material isolates the noise outside the ear canal of the earphone. This method can isolate high-frequency noise, but the noise reduction function for low-frequency noise is weak, and people are still affected by low-frequency noise.
- the present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, the present invention provides a noise reduction device and a noise reduction earphone, which can improve the noise reduction effect of low frequency noise.
- an embodiment of the present invention provides a noise reduction device, including:
- an in-ear conduit for receiving acoustic wave signals
- the in-ear conduit is provided with an in-ear channel, and the in-ear channel is used for propagating the acoustic wave signal
- the casing is provided with a sound-absorbing channel that communicates with the in-ear channel, and the sound-absorbing channel is helical; the sound-absorbing channel is used for receiving the sound wave signal propagated by the in-ear channel, and for attenuating the sound wave signal.
- the noise reduction device of the embodiment of the present invention has at least the following beneficial effects: by setting the helical muffler channel to communicate with the in-ear channel, and the spiral muffler channel is similar to achieve the effect of low-pass filtering, after the noise enters the in-ear channel, the muffler channel A sound quality is formed acoustically. When a sound wave propagates in it, the air moves with the sound wave, consumes energy during the movement, attenuates the sound wave signal, and enhances the noise reduction effect of low-frequency noise.
- the noise reduction channel includes:
- a spiral channel for receiving the sound wave signal propagated by the in-ear channel and for attenuating the sound wave signal
- the auxiliary channel is communicated with the in-ear channel at the connection with the spiral channel, and the auxiliary channel is used for enhancing the attenuation of the sound wave signal.
- the outer casing is provided with a sound leakage hole that communicates with the noise reduction channel, and the sound leakage hole is used to pass in a noise signal;
- the noise reduction device further includes:
- the tuning net is arranged at the sound leakage hole of the casing, and is used for adjusting the noise signal passed through the sound leakage hole.
- the sound reduction channel of the casing is filled with a sound adjustment layer, and the sound adjustment layer is used to adjust the noise reduction amplitude of the sound reduction channel.
- the sound tuning layer is made of sound absorbing material.
- the sound tuning net includes any one of the following: an acoustic resistance gasket and a sound leakage net, the sound resistance gasket is provided with a plurality of, and the sound leakage net is provided with A number of first through holes for passing the noise signal.
- an earmuff is provided on the in-ear catheter.
- the earmuffs include:
- the first socket part is provided with a second through hole
- the second socket part is connected with the first socket part, and the second socket part is provided with a third through hole communicating with the second through hole;
- a connecting part which is matched with the in-ear conduit and communicates with the third through hole
- the shapes of the first socket part and the second socket part are hemispherical, and the diameter of the second socket part is larger than the diameter of the first socket part.
- the casing includes: an upper casing and a lower casing, the upper casing is provided with a first connection ring, and the lower casing is provided with a first connection ring.
- a ring-matched second connecting ring, the first connecting ring and the second connecting ring are matched with each other to form the muffler channel and the auxiliary channel.
- another embodiment of the present invention provides a noise-cancelling earphone, the noise-cancelling earphone comprising the noise-cancelling device according to the first aspect.
- the noise reduction earphone of the embodiment of the present invention has at least the following beneficial effects: by setting the noise reduction device of the first aspect, the noise reduction effect of the earphone can be improved.
- FIG. 1 is a front view of a specific embodiment of a noise reduction device in an embodiment of the present invention
- Fig. 2 is the sectional view along A-A line of Fig. 1;
- Fig. 3 is the sectional view along B-B line of Fig. 1;
- FIG. 4 is a schematic diagram of an explosion of a specific embodiment of the noise reduction device in the embodiment of the present invention.
- FIG. 5 is a schematic exploded view of a specific embodiment of the noise reduction device in the embodiment of the present invention.
- FIG. 6 is a noise reduction effect diagram of a noise reduction device and a common passive noise reduction device in an embodiment of the present invention.
- the external sound wave signal passes through the barrier layer through the casing 100 , which is equivalent to a resistance, and then the sound wave signal enters the sound-absorbing channel 110 through the in-ear channel 210 , and the spiral sound-absorbing channel 110 is equivalent to an inductor, coupling the low-frequency sound wave signal , which enhances the noise reduction effect of low-frequency noise.
- the path length of the spiral channel 111 is greater than the path length of the auxiliary channel 112 .
- the small cavity formed by the auxiliary channel 112 can enhance the attenuation of medium and high frequency noise, thereby improving the noise reduction effect of the entire muffler channel 110 .
- the noise entering the in-ear channel 210 can be attenuated along with the air propagation, thereby enhancing the noise reduction effect.
- the tuning net includes any one of the following: an acoustic resistance gasket and a sound leakage net, the acoustic resistance gasket is provided with a plurality of, and the sound leakage net is provided with a plurality of first through holes for introducing noise signals.
- the acoustic resistance gasket can be a fully enclosed type, or it can be a sound resistance gasket with a certain density; and the sound leakage net is provided with a number of first through holes, and the first through holes are arranged so that the noise that adjusts the muffler effect enters the muffler.
- the channel 110 is easier, and the number of the first through holes can be set according to the noise reduction effect.
- the earmuff 300 includes: a first socket part 310, a second socket part 320 and a connecting part 330; a first socket part 310, a second through hole 311 is formed on the first socket part 310; a second socket The connecting portion 320 is connected with the first socket portion 310, and the second socket portion 320 is provided with a third through hole (not marked in the figure) that communicates with the second through hole 311; the connecting portion 330 is matched with the ear catheter 200,
- the shape of the first socket part 310 and the second socket part 320 is hemispherical, and the diameter of the second socket part 320 is larger than the diameter of the first socket part 310 .
- the connecting portion 330 is sleeved on the in-ear channel 210, and the in-ear channel 210 in this embodiment has a stepped appearance.
- the first socket part 310 and the second socket part 320, and the diameter of the second socket part 320 is larger than the diameter of the first socket part 310, the first socket part 310 and the second socket part 320 are inserted into the user's
- the ear is more stable, so that the user wears the headset firmly, thereby improving the user's experience.
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Abstract
Description
Claims (10)
- 一种降噪装置,其特征在于,包括:入耳导管,用于接收声波信号;所述入耳导管道设有入耳通道,所述入耳通道用于传播所述声波信号;壳体,设有连通所述入耳通道的消音通道,所述消音通道为螺旋状;所述消音通道用于接收所述入耳通道传播的所述声波信号,并用于对所述声波信号进行衰减。
- 根据权利要求1所述的降噪装置,其特征在于,所述消音通道包括:螺旋通道,用于接收所述入耳通道传播的所述声波信号,并用于对所述声波信号进行衰减;辅助通道,与所述螺旋通道的连通处与所述入耳通道连通,所述辅助通道用于增强所述声波信号的衰减。
- 根据权利要求2所述的降噪装置,其特征在于,所述外壳上开设有连通所述消音通道的泄音孔,所述泄音孔用于通入噪音信号;所述降噪装置还包括:调音网,设置于所述外壳的所述泄音孔处,用于调整所述泄音孔通入的所述噪音信号。
- 根据权利要求2所述的降噪装置,其特征在于,所述外壳的所述消音通道内填充有调音层,所述调音层用于调整所述消音通道的降噪幅度。
- 根据权利要求4所述的降噪装置,其特征在于,所述调音层由吸声材料制成。
- 根据权利要求3所述的降噪装置,其特征在于,所述调音网包括以下任意一种:声阻垫片和泄音网,所述声阻垫片设有若干,所述泄音网上设有若干用于通入所述噪音信号的第一通孔。
- 根据权利要求1至7任一项所述的降噪装置,其特征在于,所述入耳导管上设有耳套。
- 根据权利要求7所述的降噪装置,其特征在于,所述耳套包括:第一套接部,所述第一套接部上开设有第二通孔;第二套接部,与所述第一套接部连接,所述第二套接部上开设有与所述第二通孔连通的第三通孔;连接部,与所述入耳导管相互匹配,且连通所述第三通孔;所述第一套接部和所述第二套接部的形状为半球形,所述第二套接部的直径大于所述第一套接部的直径。
- 根据权利要求1至7任一项所述的降噪装置,其特征在于,所述外壳包括:上壳体和下壳体,所述上壳体设有第一连接环,所述下壳体上设有与第一连接环匹配的第二连接环,所述第一连接环和所述第二连接环相互匹配形成所述消音通道。
- 一种降噪耳机,其特征在于,所述降噪耳机包括如权利要求1至9任一项所述的降噪装置。
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202120521798.XU CN215581637U (zh) | 2021-03-12 | 2021-03-12 | 降噪装置及降噪耳机 |
CN202120521798.X | 2021-03-12 | ||
CN202110271678.3 | 2021-03-12 | ||
CN202110271678.3A CN113055777A (zh) | 2021-03-12 | 2021-03-12 | 降噪装置及降噪耳机 |
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PCT/CN2021/090325 WO2022188249A1 (zh) | 2021-03-12 | 2021-04-27 | 降噪装置及降噪耳机 |
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Citations (8)
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WO2006056913A1 (en) * | 2004-11-24 | 2006-06-01 | Koninklijke Philips Electronics N.V. | In-ear headphone |
CN105592380A (zh) * | 2016-02-26 | 2016-05-18 | 深圳市优科威科技有限公司 | 降噪耳机 |
CN105933813A (zh) * | 2016-06-06 | 2016-09-07 | 青岛歌尔声学科技有限公司 | 一种入耳式耳机及其设计方法 |
US20160329042A1 (en) * | 2015-05-08 | 2016-11-10 | Harman Becker Automotive Systems Gmbh | Active noise reduction in headphones |
CN206136293U (zh) * | 2016-10-20 | 2017-04-26 | 潘新庆 | 一种螺旋式防噪音助听器 |
CN110351625A (zh) * | 2019-07-12 | 2019-10-18 | 深圳市升弘创新科技有限公司 | 一种基于泄气阀的物理降噪装置、方法及应用 |
CN111163386A (zh) * | 2019-11-20 | 2020-05-15 | 任宇 | 一种入耳式耳机套及入耳式耳机 |
CN112135217A (zh) * | 2020-10-20 | 2020-12-25 | 深圳市三省声学技术服务有限公司 | 一种入耳式耳机高频隔音结构及入耳式耳机 |
-
2021
- 2021-04-27 WO PCT/CN2021/090325 patent/WO2022188249A1/zh active Application Filing
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2006056913A1 (en) * | 2004-11-24 | 2006-06-01 | Koninklijke Philips Electronics N.V. | In-ear headphone |
US20160329042A1 (en) * | 2015-05-08 | 2016-11-10 | Harman Becker Automotive Systems Gmbh | Active noise reduction in headphones |
CN105592380A (zh) * | 2016-02-26 | 2016-05-18 | 深圳市优科威科技有限公司 | 降噪耳机 |
CN105933813A (zh) * | 2016-06-06 | 2016-09-07 | 青岛歌尔声学科技有限公司 | 一种入耳式耳机及其设计方法 |
CN206136293U (zh) * | 2016-10-20 | 2017-04-26 | 潘新庆 | 一种螺旋式防噪音助听器 |
CN110351625A (zh) * | 2019-07-12 | 2019-10-18 | 深圳市升弘创新科技有限公司 | 一种基于泄气阀的物理降噪装置、方法及应用 |
CN111163386A (zh) * | 2019-11-20 | 2020-05-15 | 任宇 | 一种入耳式耳机套及入耳式耳机 |
CN112135217A (zh) * | 2020-10-20 | 2020-12-25 | 深圳市三省声学技术服务有限公司 | 一种入耳式耳机高频隔音结构及入耳式耳机 |
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