WO2018072383A1 - 一种音频播放装置和设备 - Google Patents

一种音频播放装置和设备 Download PDF

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Publication number
WO2018072383A1
WO2018072383A1 PCT/CN2017/076330 CN2017076330W WO2018072383A1 WO 2018072383 A1 WO2018072383 A1 WO 2018072383A1 CN 2017076330 W CN2017076330 W CN 2017076330W WO 2018072383 A1 WO2018072383 A1 WO 2018072383A1
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WIPO (PCT)
Prior art keywords
fiber
cavity
fibers
audio playback
fabric
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PCT/CN2017/076330
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English (en)
French (fr)
Inventor
孙正滨
任艳辉
于利刚
单海波
韩梅梅
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华为技术有限公司
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Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to US16/342,388 priority Critical patent/US10708684B2/en
Priority to JP2019520605A priority patent/JP2020501398A/ja
Priority to EP17862321.1A priority patent/EP3522563A1/en
Publication of WO2018072383A1 publication Critical patent/WO2018072383A1/zh

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    • 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
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only 
    • H04R1/28—Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
    • H04R1/2803—Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means for loudspeaker transducers
    • 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
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only 
    • H04R1/28—Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
    • H04R1/2807—Enclosures comprising vibrating or resonating arrangements
    • H04R1/2811—Enclosures comprising vibrating or resonating arrangements for loudspeaker transducers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/06—Loudspeakers
    • 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
    • H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
    • H04R1/025—Arrangements for fixing loudspeaker transducers, e.g. in a box, furniture
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2400/00—Loudspeakers
    • H04R2400/11—Aspects regarding the frame of loudspeaker transducers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2499/00—Aspects covered by H04R or H04S not otherwise provided for in their subgroups
    • H04R2499/10—General applications
    • H04R2499/11—Transducers incorporated or for use in hand-held devices, e.g. mobile phones, PDA's, camera's
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02—Details

Definitions

  • Embodiments of the present invention relate to the field of audio device technologies, and in particular, to an audio playback device and device.
  • the cavity material is generally porous, porous and gas permeable, such as natural zeolite, activated carbon, different types of foam and the like. Since the cavity material has a large number of interpenetrating micropores from the surface to the inside, it has a certain gas permeability. When the sound wave is incident on the surface of the porous material, the air in the micropore is vibrated. Due to the frictional resistance and the viscous resistance of the air and the heat conduction, a considerable part of the acoustic energy is converted into heat energy, thereby functioning as a sound absorbing and augmenting cavity.
  • gas permeable such as natural zeolite, activated carbon, different types of foam and the like. Since the cavity material has a large number of interpenetrating micropores from the surface to the inside, it has a certain gas permeability. When the sound wave is incident on the surface of the porous material, the air in the micropore is vibrated. Due to the frictional resistance and the viscous resistance of the air and the heat con
  • the zeolitic material is made into micron sized pellets.
  • this material has low strength and is brittle in actual use.
  • the plurality of pellets need to be packaged into a dedicated housing/cavity and the housing is packaged by a dedicated cover. Due to the complicated manufacturing process, low strength, high assembly difficulty, high cost and selectivity to the casing, the general applicability is low, which limits its application.
  • Embodiments of the present invention provide an audio playback device and device.
  • the resonance frequency f0 and the increased frequency bandwidth can be reduced by the cavity-enhancing material included in the audio playback device or the audio playback device of the device.
  • an embodiment of the present invention provides an audio playback device.
  • the audio playback device includes a speaker, a speaker container, and a cavity material.
  • the speaker and the cavity-increasing material are disposed in the speaker container;
  • the cavity-increasing material is a fabric made of fibers having irregular holes on the surface, and fibers of the fabric include gaps of different sizes between the fibers.
  • a fabric made of fibers having irregular holes on the surface is provided in the audio playback device.
  • the resonance frequency f0 and the increased frequency bandwidth of the audio playback device are reduced by the gap between the fibers and the fibers of the fabric and the irregular holes in the fiber surface.
  • the fibers are any one or more of organic fibers, inorganic fibers, metal fibers, ceramic fibers, or hybrid fibers.
  • the fibers are long fibers and/or short fibers.
  • the cross-sectional shape of the fibers is a combination of any one or more of a circle, an I-shape, or an ellipse.
  • the fiber hair center structure may be any one or combination of hollow structures, solid structures, or sheath core structures.
  • the fibers are made by any of acupuncture, hydroentanglement, meltblowing or hot pressing.
  • the cavity-increasing material is a nonwoven fabric made of hydroentangled polyester fiber; the fiber structure is a short fiber of circular cross section.
  • the cavity-increasing material is a nonwoven fabric made of needle-punched polyester porous fibers; and the fiber structure is a short fiber having an elliptical cross section.
  • the cavity-increasing material is a polyethylene porous fiber composite spun, a filament woven fabric; and the fiber structure is a long fiber of a sheath-core structure having an elliptical cross section.
  • the cavity-increasing material is a nonwoven fabric made by a glass fiber melt-blown method; the fiber structure is a short fiber having an elliptical cross section.
  • the cavity-enhancing material is a spunlaced fabric of polylactic acid porous fibers; the fiber structure is composite spun into hollow staple fibers.
  • the cavity-increasing material is a woven fabric of needle-punched soybean fiber; the fiber structure is a short fiber of elliptical cross section.
  • the cavity-enhancing material is a needle-punched cloth of silver porous fibers; the fiber structure is a short fiber of elliptical cross-section.
  • the cavity-enhancing material is a hybrid fiber composed of a plurality of fiber blends and knitted into a cloth; the fiber structure is a short fiber having an elliptical cross section.
  • the plurality of fibers specifically includes: 40% silver porous fiber, 30% polyester fiber, 10% soybean fiber, and 20% glass fiber.
  • the cavity material is composed of a mixture of long and short fibers which are woven by blending; the fiber structure has a cross section of an I-shape.
  • the fabric composed of the long and short fibers is specifically composed of: 30% polyester long fiber, 20% carbon fiber short fiber, and 50% polypropylene fiber.
  • a specific embodiment of the present invention provides an apparatus.
  • the device is a mobile phone, and the mobile phone includes the audio playback device of any of the first aspect and the first aspect.
  • the audio playback device is set in the mobile phone, the audio frequency of the audio playback device is reduced and the frequency bandwidth is increased.
  • a specific embodiment of the present invention provides an apparatus.
  • the device is an earphone comprising the audio playback device of any of the first aspect and the first aspect.
  • the audio playback device is set in the earphone, thereby causing the earphone to perform audio playback, the resonance frequency f0 and the increased frequency bandwidth of the audio playback device are lowered.
  • An audio playback apparatus and apparatus according to an embodiment of the present invention, according to the audio playback apparatus, a fabric made of fibers having irregular holes on a surface thereof is disposed in the audio playback device. It is thereby achieved that the gap between the fibers and the fibers of the fabric and the irregular holes in the fiber surface reduce the resonance frequency f0 and the increased frequency bandwidth of the audio playback device when the audio is played by the audio playback device.
  • FIG. 1 is an audio playback device according to an embodiment of the present invention
  • FIG. 2 is a schematic view showing a fiber structure according to a specific embodiment of the present invention.
  • FIG. 3 is a graph showing a relationship between frequency and sound pressure level according to a specific embodiment of the present invention.
  • FIG. 5 is still another audio playback device according to an embodiment of the present invention.
  • FIG. 6 is a schematic structural diagram of a mobile phone according to an embodiment of the present invention.
  • FIG. 1 is the main An audio playback device provided by an embodiment of the invention.
  • the audio playback device includes a speaker 102, a speaker container 101, and a cavity-enhancing material 103.
  • the speaker 102 and the cavity-enhancing material 103 are disposed in the speaker container 101.
  • the speaker resonance frequency f0 is reduced as much as possible and the device bandwidth is increased. Therefore, the low-frequency response of the speaker is better, and the sound is more full and rounder, so that people are more and more demanding for listening to good sounds.
  • the surface of the fiber includes micropores which are regularly distributed and different in size, since there are a plurality of micropores on each of the fiber substrates, and the voids between the fibers and the fibers on the fabric made of the fiber are naturally A network of three-dimensional capillary channels is formed.
  • the fibers with different sizes of micropores on the surface are beneficial to establish a myriad of three-dimensional space for absorbing and releasing air, forming a virtual space comparable to a real cavity.
  • the fabric made of the fibers of the specific embodiments of the present invention forms a cavity-enhancing material.
  • the fabric made of the fiber used in the embodiment of the present invention has low raw material cost, simple construction process and universality, and at the same time gives the speaker a lower resonance frequency f0 and a larger frequency bandwidth. Therefore, the audio playback device or device including the above-mentioned fabric of the present invention can achieve a virtual increase in the resonance space of the speaker, achieving the same acoustic effect as realizing the back cavity space of the speaker device.
  • FIG. 3 is a graph showing a relationship between frequency and sound pressure level according to a specific embodiment of the present invention.
  • the horizontal axis represents frequency and the vertical axis represents sound pressure level.
  • curve 1 shows the sound pressure level curve of the speaker when no fiber material is added.
  • Curve 2 represents a sound pressure level curve of a fabric formed by adding a fibrous material having a surface including irregular pores as a cavity-increasing material. It can be known from the curve 1 and the curve 2 that the sound pressure level of the audio playback device is significantly improved when the frequency of the audio playback device to which the cavity-increasing material is added is 800 Hz.
  • the sound pressure level of the audio playback device can be improved.
  • the resonance frequency f0 and the increased frequency bandwidth are lowered.
  • the fibers comprise any one or more of organic fibers, inorganic fibers, metal fibers, ceramic fibers or hybrid fibers.
  • the surface of the fibers is a discretely distributed microporous structure of different sizes.
  • the fibers of the fabric may also be any one or more of long fibers or short fibers.
  • the cross-sectional shape of the fiber includes any one or more of a shape such as a circle, an I-shape, and an ellipse.
  • the central structure of the fibers may be hollow or may be a solid structure or a sheath-core structure.
  • the cavity-enhancing material of the embodiment of the present invention may be a fabric produced by a plurality of processing methods.
  • the fiber may be processed by a process such as needle punching, hydroentanglement, melt blowing, hot pressing, or the like to form the fiber into a woven fabric.
  • the finished fabric may be a nonwoven fabric, a woven fabric, a knitted fabric or the like.
  • the same acoustic effect as that of the speaker chamber cavity is actually increased, and the speaker resonance frequency f0 is effectively reduced and the device bandwidth is increased to obtain better acoustic performance. .
  • FIG. 4 is an audio playback device according to an embodiment of the present invention.
  • the audio playback device includes a connection portion 401 and a cavity portion 402.
  • the connecting portion 401 is for connecting the audio playback device with the structure of other portions.
  • the cavity portion 402 includes an upper cavity and a lower cavity, and the connection portion 401 is coupled to the lower cavity, and the speaker is sealed in a cavity by the upper cavity and the lower cavity.
  • the cavity portion 402 includes a first filling cavity 404, a speaker cavity 403, and an exit port 406 for providing a booster material, the speaker cavity 403 including a speaker.
  • the sound emitting portion of the speaker is opposite to the sound emitting port 406.
  • the sounding port 406 is further provided with a second filling cavity 405, and the second filling cavity is provided with a cavity material.
  • a booster material is placed through the first fill cavity 404 and the second fill cavity 405 of the exit port 406 to cause the speaker to resonate at a frequency f0 and increase the device bandwidth.
  • FIG. 4 is only an example of a specific implementation manner in the specific embodiments of the present invention, and is not intended to limit the present invention.
  • FIG. 5 is still another audio playback device according to an embodiment of the present invention.
  • the audio playback device includes Rear cavity 501 and front cavity 502.
  • the rear cavity 501 is a concave structure 503, and the effect of physically increasing the cavity is achieved by providing the concave structure 503.
  • a cavity-enhancing material 504 is also disposed in the concave structure 503, and the effect of the virtual cavity is achieved by the cavity-enhancing material 504.
  • the top of the rear cavity 501 further includes a support structure 505 through which the front cavity 502 is disposed on the rear cavity 501.
  • the support structure 505 can be an edge disposed at the top of the rear cavity 501. It may also be a material disposed on top of the entire rear chamber 501 that is ventilated.
  • the material is a cavity-enhancing material as described above.
  • the front cavity 502 includes an upper housing 508 and a speaker 506.
  • the upper housing 508 is sealingly coupled to the rear chamber 501.
  • the speaker 506 is disposed on the support structure 505 of the rear cavity 501.
  • the upper housing 508 also includes an acoustic port 507.
  • the cavity enhancement material may also be disposed in the front cavity 502. The position of the cavity-increasing material is not limited in any particular embodiment of the present invention as long as it is capable of achieving a better audio effect.
  • Embodiment 1 A first audio playback device comprising a cavity enhancing material.
  • the cavity-increasing material is a polyester porous fiber having a circular cross section and short fibers.
  • the acoustic cavity material was spun into a nonwoven fabric and the weight per unit area was 0.050 grams.
  • the first audio playback device has a resonance frequency of 850 Hz before adding the cavity-enhancing material, and the resonance frequency f0 after adding the cavity-enhancing material is lowered by 100 Hz.
  • the sound pressure level (SPL) at a frequency of 500 Hz is 74.50 dB before the addition of the cavity material, and the sound pressure level (SPL) at a frequency of 500 Hz after adding the cavity material is increased by 0.6 dB.
  • the sound pressure level (SPL) at a frequency of 2000 Hz is 84.3 dB before the addition of the cavity material, and the sound pressure level (SPL) at a frequency of 2000 Hz after adding the cavity material is increased by 0.25 dB
  • Embodiment 2 A first audio playback device comprising a cavity enhancing material.
  • the cavity-increasing material is a polyester porous fiber having an elliptical cross section and short fibers.
  • the acoustic cavity material was needled into a woven fabric and the weight per unit area was 0.08 grams.
  • the first audio playback device has a resonance frequency f0 of 880 Hz before the addition of the cavity-enhancing material, and a resonance frequency of 110 Hz after the addition of the cavity-enhancing material.
  • the sound pressure level (SPL) at a frequency of 500 Hz is 73.6 dB before the addition of the cavity material, and the sound pressure level (SPL) at a frequency of 500 Hz after the addition of the cavity material is increased by 0.70 dB.
  • the sound pressure level (SPL) at a frequency of 2000 Hz is 83.8 dB before the addition of the cavity material, and the sound pressure level (SPL) at a frequency of 2000 Hz after the addition of the cavity material is
  • Embodiment 3 A first audio playback device comprising a cavity enhancing material.
  • the cavity-increasing material is a polyethylene porous fiber having an elliptical cross section and a sheath core structure.
  • the acoustic cavity material is sprayed with a composite spinning method, and woven into a cloth, and the weight per unit area is 0.10 g.
  • the first audio playback device has a resonance frequency f0 of 830 Hz before adding the cavity-enhancing material, and the resonance frequency f0 is decreased by 95 Hz after the addition of the cavity-enhancing material.
  • the sound pressure level (SPL) at a frequency of 500 Hz is 74.10 dB before the addition of the cavity material, and the sound pressure level (SPL) at a frequency of 500 Hz after the addition of the cavity material is increased by 0.75 dB.
  • the sound pressure level (SPL) at a frequency of 2000 Hz is 83.5 dB before the addition of the cavity material, and the sound pressure level (SPL) at a frequency of 2000 Hz after adding the cavity material is increased by 0.32 dB.
  • Embodiment 4 A first audio playback device comprising a cavity enhancing material.
  • the cavity-increasing material is a glass fiber having an elliptical cross section and short fibers.
  • the acoustic cavity material was formed into a nonwoven fabric by melt blowing, and the weight per unit area was 0.12 g.
  • the first audio playback device has a resonance frequency f0 of 860 Hz before the addition of the cavity-enhancing material, and the resonance frequency f0 is decreased by 125 Hz after the addition of the cavity-enhancing material.
  • the sound pressure level (SPL) at a frequency of 500 Hz is 72.50 dB before the addition of the cavity material, and the sound pressure level (SPL) at a frequency of 500 Hz after adding the cavity material is increased by 0.90 dB.
  • the sound pressure level (SPL) at a frequency of 2000 Hz is 81.4 dB before the addition of the cavity material, and the sound pressure level (SPL) at a frequency of 2000 Hz after adding the cavity material is increased by 0.45 dB.
  • Embodiment 5 A first audio playback device comprising a cavity enhancing material.
  • the cavity-increasing material is a polylactic acid porous fiber and is composite-spun into hollow short fibers.
  • the acoustic cavity material was woven into a cloth by hydroentanglement and the weight per unit area was 0.05 grams.
  • the first audio playback device has a resonance frequency f0 of 900 Hz before the addition of the cavity-enhancing material, and the resonance frequency f0 is decreased by 95 Hz after the addition of the cavity-enhancing material.
  • the sound pressure level (SPL) at a frequency of 500 Hz is 74.8 dB before the addition of the cavity material, and the sound pressure level (SPL) at a frequency of 500 Hz after the addition of the cavity material is increased by 0.50 dB.
  • the sound pressure level (SPL) at a frequency of 2000 Hz is 84.8 dB before the addition of the cavity material, and the sound pressure level (SPL) at a frequency of 2000 Hz after the addition of the cavity material is increased by 0.25 dB.
  • Embodiment 6 A first audio playback device comprising a cavity enhancing material.
  • the cavity-increasing material is a soybean porous fiber having an elliptical cross section and short fibers.
  • the acoustic cavity material was needled into a woven fabric and the weight per unit area was 0.08 grams.
  • the first audio playback device has a resonance frequency f0 of 890 Hz before adding the cavity-enhancing material, and the post-test resonance frequency f0 is added after adding the cavity-enhancing material. Reduced by 105HZ.
  • the sound pressure level (SPL) at a frequency of 500 Hz is 72.7 dB before the addition of the cavity material, and the sound pressure level (SPL) at a frequency of 500 Hz after adding the cavity material is increased by 0.6 dB.
  • the sound pressure level (SPL) at a frequency of 2000 Hz is 82.20 dB before the addition of the cavity material, and the sound pressure level (SPL) at a frequency of 2000 Hz after adding the cavity material is reduced by 0.35 dB.
  • Embodiment 7 A first audio playback device comprising a cavity enhancing material.
  • the cavity-increasing material is a silver porous fiber having an elliptical cross section and short fibers.
  • the acoustic cavity material was knitted into a cloth and the weight per unit area was 0.15 grams.
  • the first audio playback device has a resonance frequency f0 of 940 Hz before the addition of the cavity-enhancing material, and the resonance frequency f0 is decreased by 160 Hz after the addition of the cavity-enhancing material.
  • the sound pressure level (SPL) at a frequency of 500 Hz is 72.0 dB before the addition of the cavity material, and the sound pressure level (SPL) at a frequency of 500 Hz after adding the cavity material is increased by 0.95 dB.
  • the sound pressure level (SPL) at a frequency of 2000 Hz is 92.90 dB before the addition of the cavity material, and the sound pressure level (SPL) at a frequency of 2000 Hz after adding the cavity material is
  • Embodiment 8 A first audio playback device comprising a cavity enhancing material.
  • the cavity enhancement material is a fabric composed of a plurality of fiber blends. Wherein, the weight ratio of the plurality of fibers is 40% silver porous fiber, the weight ratio is 30% polyester fiber, the weight ratio is 10% soybean fiber, and the weight ratio is 20% glass fiber.
  • the fiber has an elliptical cross section and short fibers with a weight per unit area of 0.08 g.
  • the acoustic cavity material is knitted into a cloth.
  • the first audio playback device has a resonance frequency f0 of 910 Hz before adding the cavity-increasing material, and the resonance frequency f0 is decreased by 120 Hz after the addition of the cavity-enhancing material.
  • the sound pressure level (SPL) at a frequency of 500 Hz is 74.8 dB before the addition of the cavity material, and the sound pressure level (SPL) at a frequency of 500 Hz after adding the cavity material is increased by 0.85 dB.
  • the sound pressure level (SPL) at a frequency of 2000 Hz is 85.2 dB before the addition of the cavity material, and the sound pressure level (SPL) at a frequency of 2000 Hz after adding the cavity material is increased by 0.50 dB.
  • Embodiment 9 A first audio playback device comprising a cavity enhancing material.
  • the cavity material is a fabric composed of a mixture of long and short fibers. Among them, a plurality of fibers contained short fibers of 30% by weight of polyester long fibers, 20% by weight of carbon fibers, and 50% of polypropylene fibers.
  • the surface of the fiber is porous, the cross section is I-shaped, and the inside is hollow.
  • the acoustic cavity material was woven into a cloth by blending, and the weight per unit area was 0.10 g.
  • the first audio playback device has a resonance frequency f0 of 925 Hz before the addition of the cavity-enhancing material, and the resonance frequency f0 is decreased by 110 Hz after the addition of the cavity-enhancing material.
  • the sound pressure level (SPL) at a frequency of 500 Hz is 74.2 dB before the addition of the cavity material, and the sound pressure level (SPL) at a frequency of 500 Hz after adding the cavity material is increased by 0.75 dB.
  • the sound pressure level (SPL) at a frequency of 2000 Hz is 84.6 dB before the addition of the cavity material, and the sound pressure level (SPL) at a frequency of 2000 Hz after adding the cavity material is increased by 0.36 dB.
  • the fiber comprising a plurality of micropores and the fabric made of the fiber are used as a cavity-enhancing material to reduce the resonance frequency f0. It can achieve the virtual increase of the resonant space of the speaker, achieving the same acoustic effect as the real increase of the back cavity space of the speaker device.
  • an audio playback device comprising a fabric made of the fibers can be added to a device that requires an audio playback device but is relatively small.
  • the device can be a cell phone.
  • the speaker container is designed according to the space that can be placed on the mobile phone.
  • the speaker and the booster material are disposed in the speaker.
  • FIG. 6 is a schematic structural diagram of a mobile phone according to an embodiment of the present invention.
  • the mobile phone 601 includes a display screen 603, a processor, a communication module, a power source, a camera, and an audio playback device 602. Continuous support is provided for operation of the handset 601 by the power source.
  • the communication module may be configured to transmit information of the mobile phone 601 and other devices, and the communication module may include but is not limited to a baseband communication module, a Bluetooth communication module, and NFC (Near Field Communication Technology, Near Field Communication). )Wait.
  • the processor includes processing for inputting and outputting data in the handset 601.
  • the data outputted in the mobile phone can be displayed through the display screen 603, played through the audio playback device 602, or simultaneously displayed through the display screen 603 and played through the audio playback device 602.
  • the audio playback device 602 may be any of the above-described audio playback modules (Fig. 4, Fig. 5), or may be any other audio playback device including the fabric formed by the above fibers (Fig. 2).
  • the device can also be a headset.
  • the speaker container is the outer casing of the earphone.
  • the speaker and the booster material are disposed within the earphone housing.
  • the specific location and specific size of the cavity material in the speaker container are required to be associated with the speaker.
  • the actual shape and size of the container match.
  • the invention is not limited thereto.

Abstract

本发明实施例公开了一种音频播放装置和设备。所述音频播放装置包括扬声器、扬声器容器和增腔材料，所述扬声器和所述增腔材料设置在所述扬声器容器中；所述增腔材料为表面存在不规则孔洞的纤维制成的织物，所述织物的纤维与纤维之间形成了孔洞。通过在所述音频播放装置中设置表面存在不规则孔洞的纤维制成的织物。由此实现了通过所述音频播放装置进行音频播放时，所述织物的纤维与纤维之间的缝隙和纤维表面的不规则孔洞降低音频播放装置的共振频率f0和增大的频带宽度。

Description

一种音频播放装置和设备
本申请要求于2016年10月17日提交中国国家知识产权局专利局、申请号为201610905803.0、发明名称为“一种扬声器装置和终端”的中国专利申请，和2016年11月18日中国国家知识产权局专利局、申请号为201611018757.9、发明名称为“一种音频播放装置和设备”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本发明的实施例涉及音频设备技术领域，尤其涉及一种音频播放装置和设备。
背景技术
为了使得扬声器低频响应更好，实现声音更为饱满、更圆润的音效，需要降低扬声器共振频率f0和增大器件频带宽度。现有技术中，通常存在两种方法。一是通过增加扬声器后腔的空间，如增加音箱的外观尺寸，赋予扬声器更大的后腔空间。二是，采用添加增腔材料的方法，通过添加增腔材料，达到虚拟增加扬声器后腔的目的。对于第一种方法通常用于体积较大的扬声器或体积能够被增大的扬声器。但是，对于难于物理增加扬声器后腔尺寸的扬声器，特别是微型扬声器，通常是添加增腔材料达到虚拟增腔的效果。
增腔材料一般是具有多孔、疏松和透气的物质，如天然沸石、活性炭、不同种类的发泡体等材料。由于增腔材料中具有大量的、互相贯通的、从表到里的微孔，也即具有一定的透气性。当声波入射到多孔材料表面时，引起微孔中的空气振动，由于摩擦阻力和空气的黏滞阻力以及热传导作用，将相当一部分声能转化为热能，从而起吸音和增腔作用。
但是，现有技术中的增腔材料也存在许多问题。例如，将沸石材料制成微米尺寸的小球。但此种材料强度低，在实际使用过程中易碎。并且需要将所述多个小球封装到专用的壳体/腔体，并通过专用的盖体对壳体进行封装。由于原材料制成工艺复杂、强度低、装配难度高，成本高且对壳体具有选择性，从而导致了普遍适用性低，限制了其应用。
发明内容
本发明实施例提供了一种音频播放装置和设备。通过所述音频播放装置或所述设备的音频播放装置中包括的增腔材料，可以降低共振频率f0和增大的频带宽度。
一方面，本发明实施例提供了一种音频播放装置。所述音频播放装置包括：扬声器、扬声器容器和增腔材料。所述扬声器和所述增腔材料设置在所述扬声器容器中；所述增腔材料为表面存在不规则孔洞的纤维制成的织物，所述织物的纤维与纤维之间包括不同尺寸的缝隙。通过在所述音频播放装置中设置表面存在不规则孔洞的纤维制成的织物。通过所述织物的纤维与纤维之间的缝隙和纤维表面的不规则孔洞降低音频播放装置的共振频率f0和增大的频带宽度。
在一个可能的设计中，所述纤维是有机纤维、无机纤维、金属纤维、陶瓷纤维或混杂纤维中的任意一种或多种。
在一个可能的设计中，所述纤维是长纤维和/或短纤维。
在一个可能的设计中，所述纤维的横截面形状是圆形、工字形或椭圆中的任意一种或多种的组合。
在一个可能的设计中，所述纤维发中心结构可以是中空结构、实心结构或皮芯结构中的任意一种或多种的组合。
在一个可能的设计中，所述纤维是通过针刺、水刺、熔喷或热压中的任意一种方式，制得所述织物。
在一个可能的设计中，所述增腔材料为聚酯多孔纤维水刺制成的无纺布；其纤维结构为圆形横截面的短纤维。
在一个可能的设计中，所述增腔材料为聚酯多孔纤维针刺制成的无纺布；其纤维结构为椭圆形横截面的短纤维。
在一个可能的设计中，所述增腔材料为聚乙烯多孔纤维复合纺、长丝机织成的布；其纤维结构为椭圆形横截面的皮芯结构的长纤维。
在一个可能的设计中，所述增腔材料为玻璃纤维熔喷方式制成的无纺布；其纤维结构为椭圆形横截面的短纤维。
在一个可能的设计中，所述增腔材料为聚乳酸酯多孔纤维水刺纺织成的布；其纤维结构为复合纺成中空短纤维。
在一个可能的设计中，所述增腔材料为大豆多孔纤维针刺成的纺布；其纤维结构为椭圆形横截面的短纤维。
在一个可能的设计中，所述增腔材料为银多孔纤维针刺成的布；其纤维结构为椭圆形横截面的短纤维。
在一个可能的设计中，所述增腔材料为多种纤维混合组成的混杂纤维并针织成布；其纤维结构为椭圆形横截面的短纤维。
在一个可能的设计中，所述多种纤维具体包括：含量为40％银多孔纤维、30％聚酯纤维、10％大豆纤维和20％玻璃纤维。
在一个可能的设计中，所述增腔材料长短纤维混合组成的织物，所述织物通过混纺编织；其纤维结构的横截面为工字型。
在一个可能的设计中，所述长短纤维混合组成的织物具体包括：含量为30％聚酯长纤维、20％的碳纤维的短纤维、50％的丙纶纤维。
另一方面，本发明具体实施例提供了一种设备。所述设备为手机，所述手机包括第一方面及第一方面的任意一种可能所述的音频播放装置。通过在所述手机中设置所述的音频播放装置，从而使所述手机进行音频播放时，降低音频播放装置的共振频率f0和增大的频带宽度。
另一方面，本发明具体实施例提供了一种设备。所述设备为耳机，所述耳机包括第一方面及第一方面的任意一种可能所述的音频播放装置。通过在所述耳机中设置所述的音频播放装置，从而使所述耳机进行音频播放时，降低音频播放装置的共振频率f0和增大的频带宽度。
本发明实施例的一种音频播放装置和设备，根据所述音频播放装置，通过在所述音频播放装置中设置表面存在不规则孔洞的纤维制成的织物。由此实现了通过所述音频播放装置进行音频播放时，所述织物的纤维与纤维之间的缝隙和纤维表面的不规则孔洞降低音频播放装置的共振频率f0和增大的频带宽度。
附图说明
图1为本发明具体实施例提供的一种音频播放装置；
图2为本发明具体实施例提供的一种纤维结构示意图；
图3为本发明具体实施例提供的一种频率与声压级关系的曲线图；
图4为本发明具体实施例提供的一种音频播放装置；
图5为本发明具体实施例提供的又一种音频播放装置；
图6为本发明具体实施例提供的一种手机结构示意图。
具体实施方式
下面通过附图和实施例，对本发明实施例的技术方案做进一步的详细描述。
本发明具体实施例提供了一种音频播放装置和包括所述音频播放装置的设备。图1为本 发明具体实施例提供的一种音频播放装置。如图1所示，音频播放装置包括扬声器102、扬声器容器101和增腔材料103。所述扬声器102和增腔材料103设置在扬声器容器101中。通过在扬声器容器101中添加增腔材料103，尽可能地降低扬声器共振频率f0和增大器件频带宽度。从而使得扬声器低频响应更好，实现声音更为饱满、更圆润的音效，以满足人们对于好声音的聆听越来越显得挑剔要求。
图2为本发明具体实施例提供的一种纤维结构示意图。如图2所示，所述纤维的表面包括规律分布且大小不同的微孔，由于每根纤维基体上存在若干个微孔，并且将纤维制成的织物上纤维与纤维间存在的空隙，自然形成网状立体毛细通道。所述表面分别大小不同微孔的纤维，有利于建立无数个三维立体吸收和释放空气的空间，形成一个比拟真实空腔的虚拟的空间。从而使本发明具体实施例所述的纤维制成的织物形成增腔材料。本发明具体实施例所采用的纤维制成的织物，原材料成本低、施工工艺简单、具有普适性，同时赋予扬声器更加低的共振频率f0和更大的频带宽度。因此，包括本发明上述织物的音频播放装置或设备，可达到虚拟增加扬声器的谐振空间，实现与真实增加扬声器装置背腔空间相同的声学效果。
图3为本发明具体实施例提供的一种频率与声压级关系的曲线图。如图3所示，所述横轴表示频率，纵轴表示声压级。其中，曲线1表示没有添加纤维材料时扬声器的声压级曲线。曲线2表示添加了表面包括不规则孔洞的纤维材料形成的织物作为增腔材料的声压级曲线。通过所述曲线1和曲线2可以知道，所述添加了增腔材料的音频播放装置频率在800HZ下时，所述音频播放装置的声压级明显得到提高。添加了增腔材料的音频播放装置频率在1300HZ上时，所述音频播放装置的声压级能够得到提高。从而，通过增加声压级，降低共振频率f0和增大的频带宽度。
在本发明的具体实施例中，所述纤维包括有机纤维、无机纤维、金属纤维、陶瓷纤维或混杂纤维中的任意一种或多种组成的。所述纤维的表面是离散分布的、尺寸不同的微孔结构。所述织物的纤维还可以是长纤维或短纤维中的任意一种或多种。所述纤维的横截面形状包括圆形、工字形和椭圆等形状中的任意一种或多种。所述纤维的中心结构可以是中空的结果也可以是实心的结构或皮芯的结构。
本发明实施例的增腔材料可以是，将纤维通过多种加工方法制成的织物。所述纤维的加工方法可以是通过针刺、水刺、熔喷、热压等加工工艺，将上述的纤维制成织物。
所述制成的织物可以是无纺布、机织布和针织布等。所述织物中存在大量不规则分布的、贯穿或半贯穿的间隙，有益于空气的进和出。吸收和释放空气，形成一个虚拟的空间，达到虚拟增加扬声器的谐振空间。通过所述纤维之间的间隙和所述纤维表面的孔洞，实现与真实增加扬声器装置腔体空间相同的声学效果，有效降低扬声器共振频率f0和增大器件频带宽度，从而获得更好的声学性能。
图4为本发明具体实施例提供的一种音频播放装置。如图4所示，音频播放装置包括连接部分401和腔体部分402。所述连接部分401用于将所述音频播放装置与其他部分的结构进行连接。所述腔体部分402包括上腔体和下腔体组成，所述连接部分401与下腔体连接，通过所述上腔体和下腔体将所述扬声器密封在一个腔体中。
所述腔体部分402包括第一填充腔404、扬声器腔403和出声口406，所述第一填充腔404用于设置增腔材料，所述扬声器腔403中包括设置扬声器。所述扬声器的发声部位与出声口406相对，所述出声口406上还设置了第二填充腔405，所述第二填充腔内设置增腔材料。当所述扬声器工作时，通过第一填充腔404与出声口406的第二填充腔405设置增腔材料，使扬声器共振频率f0和增大器件频带宽度。
需要说明的是，上述图4所述的音频播放装置仅为本发明具体实施例中的一种具体实现方式的举例，而不能用于对本发明的限定。
图5为本发明具体实施例提供的又一种音频播放装置。如图5所示，音频播放装置包括 后腔501和前腔502。所述后腔501为凹形结构503，通过设置所述凹形结构503达到物理增腔的效果。所述凹形结构503中还设置了增腔材料504，通过所述增腔材料504达到虚拟增腔的效果。所述后腔501的顶部还包括支撑结构505，通过所述支撑结构505将前腔502设置在后腔501上。在一个例子中，所述支撑结构505可以是设置在后腔501顶部的边缘。也可以是设置在整个后腔501顶部的材料，所述材料通风。例如，所述材料为上述的增腔材料。
所述前腔502包括上壳体508和扬声器506。所述上壳体508与后腔501密封连接。所述扬声器506设置在所述后腔501的支撑结构505上。所述上壳体508还包括出声口507。在本发明的具体实施例中，所述前腔502中也可以设置所述增腔材料。只要是能够达到更好的音频效果，本发明具体实施例中对增腔材料所设置的位置不作任何限定。
下面，通过具体实验的方式对本发明包括的上述织物的音频播放装置进行实验。
实施例1：第一音频播放装置，包括增腔材料。所述增腔材料为聚酯多孔纤维，横截面为圆形，短纤维。所述声学增腔材料通过水刺成无纺布，单位面积的重量是0.050克。所述第一音频播放装置在添加增腔材料前，共振频率为850HZ，添加增腔材料后的共振频率f0降低100HZ。频率为500HZ处的声压级(SPL)在添加增腔材料前为74.50dB,添加增腔材料后频率为500HZ处的声压级(SPL)增加了0.6dB。频率为2000HZ处的声压级(SPL)在添加增腔材料前为84.3dB，添加增腔材料后频率为2000HZ处的声压级(SPL)增加了0.25dB。
实施例2：第一音频播放装置，包括增腔材料。所述增腔材料为聚酯多孔纤维，横截面为椭圆形，短纤维。所述声学增腔材料通过针刺成纺布，单位面积的重量是0.08克。所述第一音频播放装置在添加增腔材料前共振频率f0为880HZ，添加增腔材料后的共振频率降低110HZ。频率为500HZ处的声压级(SPL)在添加增腔材料前为73.6dB,添加增腔材料后频率为500HZ处的声压级(SPL)增加了0.70dB。频率为2000HZ处的声压级(SPL)在添加增腔材料前为83.8dB，添加增腔材料后频率为2000HZ处的声压级(SPL)增加了0.30dB。
实施例3：第一音频播放装置，包括增腔材料。所述增腔材料为聚乙烯多孔纤维，横截面为椭圆形，皮芯结构。所述声学增腔材料采用复合纺方法喷长丝，机织成布，单位面积的重量是0.10克。所述第一音频播放装置在添加增腔材料前共振频率f0为830HZ，添加增腔材料后共振频率f0降低了95HZ。频率为500HZ处的声压级(SPL)在添加增腔材料前为74.10dB,添加增腔材料后频率为500HZ处的声压级(SPL)增加了0.75dB。频率为2000Hz处的声压级(SPL)在添加增腔材料前为83.5dB，添加增腔材料后频率为2000HZ处的声压级(SPL)增加了0.32dB。
实施例4：第一音频播放装置，包括增腔材料。所述增腔材料为玻璃纤维，横截面为椭圆形，短纤维。所述声学增腔材料通过熔喷方式制成无纺布，单位面积的重量是0.12克。所述第一音频播放装置在添加增腔材料前共振频率f0为860HZ，添加增腔材料后共振频率f0降低了125HZ。频率为500HZ处的声压级(SPL)在添加增腔材料前为72.50dB，添加增腔材料后频率为500HZ处的声压级(SPL)增加了0.90dB。频率为2000HZ处的声压级(SPL)在添加增腔材料前为81.4dB，添加增腔材料后频率为2000HZ处的声压级(SPL)增加了0.45dB。
实施例5：第一音频播放装置，包括增腔材料。所述增腔材料为聚乳酸酯多孔纤维，复合纺成中空短纤维。所述声学增腔材料通过水刺纺织成布，单位面积的重量是0.05克。所述第一音频播放装置在添加增腔材料前共振频率f0为900HZ，添加增腔材料后共振频率f0降低95HZ。频率为500HZ处的声压级(SPL)在添加增腔材料前为74.8dB，添加增腔材料后频率为500HZ处的声压级(SPL)增加了0.50dB。频率为2000HZ处的声压级(SPL)在添加增腔材料前为84.8dB，添加增腔材料后频率为2000HZ处的声压级(SPL)增加了0.25dB。
实施例6：第一音频播放装置，包括增腔材料。所述增腔材料为大豆多孔纤维，横截面为椭圆形，短纤维。所述声学增腔材料通过针刺成纺布，单位面积的重量是0.08克。所述第一音频播放装置在添加增腔材料前共振频率f0为890HZ，添加增腔材料后试验后共振频率f0 降低了105HZ。频率为500HZ处的声压级(SPL)在添加增腔材料前为72.7dB，添加增腔材料后频率为500HZ处的声压级(SPL)增加了0.6dB。频率为2000HZ处的声压级(SPL)在添加增腔材料前为82.20dB，添加增腔材料后频率为2000Hz处的声压级(SPL)降低了0.35dB。
实施例7：第一音频播放装置，包括增腔材料。所述增腔材料为银多孔纤维，横截面为椭圆形，短纤维。所述声学增腔材料通过针织成布，单位面积的重量是0.15克。所述第一音频播放装置在添加增腔材料前共振频率f0为940HZ，添加增腔材料后试验后共振频率f0降低160HZ。频率为500HZ处的声压级(SPL)在添加增腔材料前为72.0dB，添加增腔材料后频率为500HZ处的声压级(SPL)增加了0.95dB。频率为2000Hz处的声压级(SPL)在添加增腔材料前为92.90dB，添加增腔材料后频率为2000Hz处的声压级(SPL)增加了0.65dB。
实施例8：第一音频播放装置，包括增腔材料。所述增腔材料为多种纤维混合组成的织物。其中，多种纤维的含有重量比为40％银多孔纤维、重量比为30％聚酯纤维、重量比10％大豆纤维和重量比20％玻璃纤维。纤维横截面为椭圆形，短纤维，单位面积的重量是0.08克。所述声学增腔材料通过针织成布。所述第一音频播放装置在添加增腔材料前共振频率f0为910HZ，添加增腔材料后共振频率f0降低了120HZ。频率为500HZ处的声压级(SPL)在添加增腔材料前为74.8dB，添加增腔材料后频率为500HZ处的声压级(SPL)增加了0.85dB。频率为2000Hz处的声压级(SPL)在添加增腔材料前为85.2dB，添加增腔材料后频率为2000Hz处的声压级(SPL)增加了0.50dB。
实施例9：第一音频播放装置，包括增腔材料。所述增腔材料为长短纤维混合组成的织物。其中，多种纤维的含有重量比为30％聚酯长纤维、重量比为20％的碳纤维的短纤维、含有50％的丙纶纤维。纤维表面为多孔结构，横截面为工字型，内部为中空结构。所述声学增腔材料通过混纺编织成布，单位面积的重量是0.10克。所述第一音频播放装置在添加增腔材料前共振频率f0为925HZ，添加增腔材料后共振频率f0降低了110HZ。频率为500HZ处的声压级(SPL)在添加增腔材料前为74.2dB，添加增腔材料后频率为500HZ处的声压级(SPL)增加了0.75dB。频率为2000Hz处的声压级(SPL)在添加增腔材料前为84.6dB，添加增腔材料后频率为2000Hz处的声压级(SPL)增加了0.36dB。
通过上述实施例可以发现，所述包括若干个微孔的纤维和所述纤维制成的织物作为增腔材料，能够降低共振频率f0。可达到虚拟增加扬声器的谐振空间，实现与真实增加扬声器装置背腔空间相同的声学效果。
在本发明的具体实施例中，可以将包括所述纤维制成的织物的音频播放装置添加到需要音频播放装置，但体积较小的设备中。例如，所述设备可以是手机。
当所述设备是手机时，所述扬声器容器是根据手机上所能放置的空间设计。所述扬声器和所述增腔材料设置在所述扬声器中。
图6为本发明具体实施例提供的一种手机结构示意图。如图6所示，所述手机601包括显示屏幕603、处理器、通信模块、电源、摄像头和音频播放装置602。通过所述电源为所述手机601的运行提供持续的支持。所述通信模块可以用于将所述手机601与其他的设备进行信息的传输，所述通信模块可以包括但不限于是基带通信模块、蓝牙通信模块、NFC(近距离无线通信技术,Near Field Communication)等。所述处理器包括用于对手机601中输入、输出的数据进处理。对于手机中输出的数据，可以通过显示屏幕603进行显示，也可以通过音频播放装置602进行播放，或同时通过显示屏幕603进行显示和通过音频播放装置602进行播放。所述音频播放装置602可以是上述的任意一种音频播放模块(图4、图5)，也可以是其它任意包括上述纤维(图2)形成的织物的音频播放装置。
在另一个例子中，所述设备还可以是耳机。当所述设备是耳机时，所述扬声器容器是耳机的外壳。所述扬声器和所述增腔材料设置在所述耳机壳内。
需要说明的是，所述增腔材料在扬声器容器中的具体位置和具体的大小需与所述扬声器 容器实际的形状和大小相匹配。本发明对此不作任何限定。
以上所述的具体实施方式，对本发明的目的、技术方案和有益效果进行了进一步详细说明，所应理解的是，以上所述仅为本发明的具体实施方式而已，并不用于限定本发明的保护范围，凡在本发明的精神和原则之内，所做的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。

Claims (11)

  1. 一种音频播放装置，其特征在于，所述音频播放装置包括：
    扬声器、扬声器容器和增腔材料，所述扬声器和所述增腔材料设置在所述扬声器容器中；所述增腔材料为表面存在不规则孔洞的纤维制成的织物，所述织物的纤维与纤维之间包括不同尺寸的缝隙。
  2. 根据权利要求1所述的装置，其特征在于，所述增腔材料为聚酯多孔纤维针刺制成的无纺布；其纤维结构为椭圆形横截面的短纤维。
  3. 根据权利要求1所述的装置，其特征在于，所述增腔材料为聚乙烯多孔纤维复合纺、长丝机织成的布；其纤维结构为椭圆形横截面的皮芯结构的长纤维。
  4. 根据权利要求1所述的装置，其特征在于，所述增腔材料为玻璃纤维熔喷方式制成的无纺布；其纤维结构为椭圆形横截面的短纤维。
  5. 根据权利要求1所述的装置，其特征在于，所述增腔材料为聚乳酸酯多孔纤维水刺纺织成的布；其纤维结构为复合纺成中空短纤维。
  6. 根据权利要求1所述的装置，其特征在于，所述增腔材料为大豆多孔纤维针刺成的纺布；其纤维结构为椭圆形横截面的短纤维。
  7. 根据权利要求1所述的装置，其特征在于，所述增腔材料为银多孔纤维针刺成的布；其纤维结构为椭圆形横截面的短纤维。
  8. 根据权利要求1所述的装置，其特征在于，所述增腔材料为多种纤维混合组成的混杂纤维并针织成布；其纤维结构为椭圆形横截面的短纤维；所述多种纤维具体包括：含量为40％银多孔纤维、30％聚酯纤维、10％大豆纤维和20％玻璃纤维。
  9. 根据权利要求1所述的装置，其特征在于，所述增腔材料长短纤维混合组成的织物，所述织物通过混纺编织；其纤维结构的横截面为工字型；所述长短纤维混合组成的织物具体包括：含量为30％聚酯长纤维、20％的碳纤维的短纤维、50％的丙纶纤维。
  10. 一种设备，其特征在于，所述设备为手机，所述手机包括权利要求1-9任一项所述的音频播放装置。
  11. 一种设备，其特征在于，所述设备为耳机，所述耳机包括权利要求1-9任一项所述的音频播放装置。
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