WO2004049753A1 - Multi-channel headphone - Google Patents

Multi-channel headphone Download PDF

Info

Publication number
WO2004049753A1
WO2004049753A1 PCT/KR2003/002551 KR0302551W WO2004049753A1 WO 2004049753 A1 WO2004049753 A1 WO 2004049753A1 KR 0302551 W KR0302551 W KR 0302551W WO 2004049753 A1 WO2004049753 A1 WO 2004049753A1
Authority
WO
WIPO (PCT)
Prior art keywords
sound wave
speaker unit
wave guide
channel
sound
Prior art date
Application number
PCT/KR2003/002551
Other languages
French (fr)
Inventor
Sung-Il Kim
Original Assignee
Mm Gear Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mm Gear Co., Ltd. filed Critical Mm Gear Co., Ltd.
Priority to AU2003284757A priority Critical patent/AU2003284757A1/en
Publication of WO2004049753A1 publication Critical patent/WO2004049753A1/en

Links

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
    • 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
    • H04R1/1058—Manufacture or assembly
    • H04R1/1075—Mountings of transducers in earphones or headphones
    • 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
    • H04R1/1008—Earpieces of the supra-aural or circum-aural type
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2205/00—Details of stereophonic arrangements covered by H04R5/00 but not provided for in any of its subgroups
    • H04R2205/022—Plurality of transducers corresponding to a plurality of sound channels in each earpiece of headphones or in a single enclosure
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R5/00—Stereophonic arrangements
    • H04R5/033—Headphones for stereophonic communication

Definitions

  • the present invention relates to a multi-channel headphone, and more particularly, to a multi-channel headphone capable of focusing and wide staging when forming a multi-channel sound field.
  • a conventional multi-channel headphone has a structure in which a plurality of speaker units having separate channels are horizontally disposed in one direction to correspond to a listener's ears.
  • the conventional multi-channel headphone has a structure in which a directional point at which each speaker unit faces is not uniquely positioned inside the listener's ears but dispersed in several places, the speaker units almost contact the listener's ears, and an echo space in which a sound field (staging) is to be formed does not exist.
  • the conventional multi-channel headphone does not have an optimum ratio of direct sound to indirect sound of 7:3. That is, direct sound generated in each speaker unit does not directly reach an ear hole zone, which is the listener's ears most sensitive part, and the most part of the direct sound is reflected and becomes indirect sound. As such, since all sounds reaching the ear hole zone are reflected indirect sounds, the sounds are not clear, and sound resolution is severely lowered. In addition, the listener does not perceive a directional sensitivity of each channel outputting sound in the front, back, and laterally of the listener's ears. As such, the conventional multi-channel headphone has low sound separation capacity, and the listener does not sense a field sensitivity of multiple channels.
  • each speaker unit since the direct sound generated by each speaker unit is reflected and changed into indirect sound and there is no echo space in which sound-field sensitivity and spatial sensitivity are to be sufficiently formed, due to collision with indirect sounds or interference, the direct sound is changed into noise, a sound quality is lowered, a desired scattering rate of sound wave cannot be induced, and sound quality cannot be improved.
  • the present invention provides a multi-channel headphone which improves sound resolution by using a concave sound wave guide so that a directional point at which each speaker unit faces is positioned inside an ear hole zone, and which increases sound separation and field sensitivity of multiple channels by improving a directional sensitivity of each channel.
  • the present invention also provides a multi-channel headphone with increased spatial sensitivity and sound-field sensitivity by respectively reflecting a part of direct sound generated in a speaker unit into a sound wave guide and changing the direct sound into indirect sound and by scattering noise caused by collision with indirect sounds or interference, and simultaneously, a multi-channel headphone with improved sound quality by forming the sound wave guide and scattering protrusions and by tuning a scattering ratio and reflectivity.
  • a multi-channel headphone comprising, the multi-channel headphone comprising a plurality of multi-channel speaker units; a sound wave guide in which the speaker units are disposed at predetermined intervals and which has a concave inside so that a sound wave generated by the speaker units travels toward a listener's ear hole zone; and a case, which surrounds and protects the rear surfaces of the sound wave guide and the speaker units.
  • each of the multi-channel speaker units may comprise a center-channel speaker unit, which is installed in an upper side of the sound wave guide; a front-channel speaker unit, which is installed in the . front of the sound wave guide; a rear (rear-center)-channel speaker unit, which is installed in the rear of the sound wave guide; a side-channel speaker unit, which is installed in the center of the sound wave guide; and a multi-woofer channel speaker unit, which is installed in a lower side of the sound wave guide.
  • a separate inner enclosure for surrounding a rear surface of the multi-channel speaker unit may be formed in the multi-channel speaker unit, an enclosure of the center-channel speaker unit, the front-channel speaker unit, the side-channel speaker unit, and the rear-channel speaker unit may have a closed shape, and the woofer-channel speaker unit may have no enclosure, or an enclosure thereof may have an opened shape (base reflector type).
  • the sound wave guide may have a domy or concave shape in which a curvature radius and a reflection/anti-reflection surface processing ratio are determined according to a ratio of desired direct wave to reflected wave, and a plurality of scattering protrusions, which induce scattering of the sound wave so that a sound field is formed inside the speaker unit, are formed in the sound wave guide, and the sound wave guide may include a first domy sound wave guide for surrounding a listener's ears and a second domy sound wave guide for surrounding each speaker unit in the first domy sound wave guide.
  • an inner barrier wall on which an embedded speaker unit is fixed, may be installed so that the embedded speaker unit is installed in the case, and a sound guide tube, which communicates with a sound wave exhaust hole of the sound wave guide from a front surface of the embedded speaker unit, may be installed so that sound wave generated in the embedded speaker unit fixed on the barrier wall is guided to the sound wave guide.
  • FIG. 1 is a side cross-sectional view illustrating one side of a multi-channel headphone according to an embodiment of the present invention
  • FIG. 2 is a front view illustrating an inside of FIG. 1 ;
  • FIG. 3 is a side cross-sectional view illustrating one side of a multi-channel headphone according to another embodiment of the present invention
  • FIG. 4 is a side cross-sectional view illustrating one side of a multi-channel headphone according to an embodiment of the present invention
  • FIG. 5 is a side cross-sectional view illustrating one side of a multi-channel headphone according to an embodiment of the present invention.
  • FIG. 6 is a side cross-sectional view illustrating one side of a multi-channel headphone according to an embodiment of the present invention.
  • a multi-channel headphone for constituting multiple channels, such as 3.1 channel, 4.1 channel, 5.1 channel, 6.1 channel, and 7.1 channel, includes a plurality of multi-channel speaker units 10, a sound wave guide 20, and a case 30.
  • each of the multi-channel speaker units 10 receives a multi-channel sound signal output from an amplifier (receiver).
  • each multi-channel speaker unit 10 includes a center-channel speaker unit 11 installed in an upper side of the sound wave guide 20, a front-channel speaker unit 12 installed in the front of the sound wave guide 20, a rear (rear-center)-channel speaker unit 13 installed in the rear of the sound wave guide 20, a side-channel speaker unit 14 installed in the center of the sound wave guide 20, and a multi-woofer channel speaker unit 15 installed in a lower side of the sound wave guide 20.
  • the speaker units 10 may be disposed in a variety of positions so that a sufficient sound-field sensitivity is formed.
  • two identical center-channel sound signals are input into the center-channel speaker unit 11 so that a virtual center channel is formed in the front of the listener's ears, and a front channel is formed on front right and left of the listener's ears, a side channel is formed on right and left of the listener's ears, a rear channel (or virtual rear-center channel) is formed on rear right and left of the listener's ears, and two identical woofer-channel speaker units 15 form a multi-woofer.
  • the sound wave guide 20 is an installation surface in which the speaker units 10 are fixedly installed.
  • the speaker units 10 are disposed in the sound wave guide 20 at predetermined intervals.
  • the sound wave guide 20 has a domy or concave inside so that each sound wave generated in the speaker units 10 faces a listener's ear hole zone A.
  • the sound wave guide 20 focuses a direction of each of the speaker units 10 concavely and forms a circular dome inside the speaker units 10, thereby forming an echo space.
  • the sound wave guide 20 may have all shapes in which a concave echo space is formed, as well as the domy shape.
  • a curvature radius and a reflection/anti-reflection surface processing ratio of the sound wave guide 20 are determined according to the ratio of desired direct wave (sound wave directly transferred from a speaker unit to a listener's ears) to reflected wave (sound wave generated in the speaker unit, which is reflected on several reflective surfaces and is indirectly transferred to the listener's ears), and a plurality of scattering protrusions 21 which induce scattering of the sound wave to form a sound field inside the sound wave guide 20, are formed in the sound wave guide 20. Accordingly, a designer determines the domy curvature radius or reflectivity of the sound wave guide 20 and the shape of the scattering protrusions 21 such that optimum sound-field sensitivity, field sensitivity, and high sound quality are acquired.
  • a cushion ring 40 is installed in a rim of the sound wave guide 20, and a vibration element (not shown) is connected to the cushion ring 40 so that the listener can feel sound vibration when playing games.
  • case 30 surrounds and protects the rear surfaces of the sound wave guide 20 and the speaker units 10.
  • the case 30 closes a reverse-phase sound generated in the rear surface of the speaker units 10.
  • each enclosure 50 of the center-channel speaker unit 11 , the front-channel speaker unit 12, the side-channel speaker unit 14, and the rear-channel speaker unit 13 has a closed shape, and the woofer-channel speaker unit 15 has no enclosure, or the enclosure 50 thereof has an opened shape (base reflector type) in which a vent 22 is formed, thereby reinforcing a low frequency band.
  • the case 30 has a concave inside so as to induce rear surface reflection of the base reflector type speaker unit, that is, the woofer-channel speaker unit 15, or a short sound guide tube 23 which guides reflected sound wave to the sound wave guide 20, is installed in the case 30.
  • the base reflector type speaker unit that is, the woofer-channel speaker unit 15, or a short sound guide tube 23 which guides reflected sound wave to the sound wave guide 20, is installed in the case 30.
  • the sound wave guide 20 includes a first domy sound wave guide 201 for surrounding a listener's ears and a second domy sound wave guide 202 for surrounding each speaker unit in the first domy sound wave guide 201 so that the listener can feel a clearer sound.
  • the shape and kind of the domy sound wave guide 20 are diverse and may be modified and changed by those skilled in the art without departing from the spirit of the present invention.
  • an inner barrier wall 80 on which the speaker unit 60 is fixed is installed so that an embedded speaker unit 60 or a vibration element 70 that vibrates at a low frequency band is installed in the case 30, and a sound guide tube 90, which communicates with a sound wave exhaust hole 25 of the sound wave guide 20 from the front surface of the embedded speaker unit 60, is installed so that sound wave generated in the embedded speaker unit 60 fixed on the barrier wall 80 is guided to the sound wave guide.
  • the speaker units 10 when due to a minimum diameter of the speaker units 10, the speaker units 10 are not directly installed in the sound wave guide 20 but the number of the speaker units 10 is increased by multi-channel design, the embedded speaker unit 60 is disposed on the barrier wall 80 so that the speaker units 10 do not overlap, and the sound wave exhaust hole 25 is formed in the sound wave guide 20 so that sound wave generated in the embedded speaker unit 60 is exhausted to the sound wave exhaust hole 25 through the sound guide tube 90 and the speaker units 10 and 60 having many numbers (many channels) are compactly installed in a narrow space.
  • the above-described embodiments are limited to a multi-channel speaker unit, such as 6.1 channel or 7.1 channel, and a multi-channel speaker unit having a variety of shapes may be applied to the above-described embodiments.
  • a multi-channel headphone by using a concave sound wave guide so that a directional point at which each speaker unit faces is positioned inside an ear hole zone, sound resolution is improved, and by improving a directional sensitivity of each channel, sound separation and field sensitivity of multiple channels are increased.
  • sound resolution is improved
  • a directional sensitivity of each channel sound separation and field sensitivity of multiple channels are increased.
  • spatial sensitivity and sound-field sensitivity are increased, and simultaneously, by forming the sound wave guide and scattering protrusions and by tuning a scattering ratio and reflectivity, a sound quality is improved.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Manufacturing & Machinery (AREA)
  • Stereophonic System (AREA)

Abstract

A multi-channel headphone capable of focusing and wide staging when forming a multi-channel sound field is provided. The multi-channel headphone comprises a plurality of multi-channel speaker units, a sound wave guide in which the speaker units are disposed at predetermined intervals and which has a concave inside so that a sound wave generated by the speaker units travels toward a listener’s ear hole zone, and a case, which surrounds and protects the rear surfaces of the sound wave guide and the speaker units.

Description

MULTI-CHANNEL HEADPHONE
Technical Field The present invention relates to a multi-channel headphone, and more particularly, to a multi-channel headphone capable of focusing and wide staging when forming a multi-channel sound field.
Background Art In general, a conventional multi-channel headphone has a structure in which a plurality of speaker units having separate channels are horizontally disposed in one direction to correspond to a listener's ears.
In other words, the conventional multi-channel headphone has a structure in which a directional point at which each speaker unit faces is not uniquely positioned inside the listener's ears but dispersed in several places, the speaker units almost contact the listener's ears, and an echo space in which a sound field (staging) is to be formed does not exist.
Accordingly, the conventional multi-channel headphone does not have an optimum ratio of direct sound to indirect sound of 7:3. That is, direct sound generated in each speaker unit does not directly reach an ear hole zone, which is the listener's ears most sensitive part, and the most part of the direct sound is reflected and becomes indirect sound. As such, since all sounds reaching the ear hole zone are reflected indirect sounds, the sounds are not clear, and sound resolution is severely lowered. In addition, the listener does not perceive a directional sensitivity of each channel outputting sound in the front, back, and laterally of the listener's ears. As such, the conventional multi-channel headphone has low sound separation capacity, and the listener does not sense a field sensitivity of multiple channels.
In addition, since the direct sound generated by each speaker unit is reflected and changed into indirect sound and there is no echo space in which sound-field sensitivity and spatial sensitivity are to be sufficiently formed, due to collision with indirect sounds or interference, the direct sound is changed into noise, a sound quality is lowered, a desired scattering rate of sound wave cannot be induced, and sound quality cannot be improved.
Disclosure of the Invention
The present invention provides a multi-channel headphone which improves sound resolution by using a concave sound wave guide so that a directional point at which each speaker unit faces is positioned inside an ear hole zone, and which increases sound separation and field sensitivity of multiple channels by improving a directional sensitivity of each channel.
The present invention also provides a multi-channel headphone with increased spatial sensitivity and sound-field sensitivity by respectively reflecting a part of direct sound generated in a speaker unit into a sound wave guide and changing the direct sound into indirect sound and by scattering noise caused by collision with indirect sounds or interference, and simultaneously, a multi-channel headphone with improved sound quality by forming the sound wave guide and scattering protrusions and by tuning a scattering ratio and reflectivity.
According to an aspect of the present invention, there is provided a multi-channel headphone comprising, the multi-channel headphone comprising a plurality of multi-channel speaker units; a sound wave guide in which the speaker units are disposed at predetermined intervals and which has a concave inside so that a sound wave generated by the speaker units travels toward a listener's ear hole zone; and a case, which surrounds and protects the rear surfaces of the sound wave guide and the speaker units. In addition, in order to constitute multiple channels, such as 3.1 channel, 4.1 channel, 5.1 channel, 6.1 channel, and 7.1 channel, each of the multi-channel speaker units may comprise a center-channel speaker unit, which is installed in an upper side of the sound wave guide; a front-channel speaker unit, which is installed in the . front of the sound wave guide; a rear (rear-center)-channel speaker unit, which is installed in the rear of the sound wave guide; a side-channel speaker unit, which is installed in the center of the sound wave guide; and a multi-woofer channel speaker unit, which is installed in a lower side of the sound wave guide.
In addition, in order to improve a sound quality and to widen a reversible regeneration frequency, a separate inner enclosure for surrounding a rear surface of the multi-channel speaker unit may be formed in the multi-channel speaker unit, an enclosure of the center-channel speaker unit, the front-channel speaker unit, the side-channel speaker unit, and the rear-channel speaker unit may have a closed shape, and the woofer-channel speaker unit may have no enclosure, or an enclosure thereof may have an opened shape (base reflector type).
In addition, in order to perform precise tuning of a sound quality, the sound wave guide may have a domy or concave shape in which a curvature radius and a reflection/anti-reflection surface processing ratio are determined according to a ratio of desired direct wave to reflected wave, and a plurality of scattering protrusions, which induce scattering of the sound wave so that a sound field is formed inside the speaker unit, are formed in the sound wave guide, and the sound wave guide may include a first domy sound wave guide for surrounding a listener's ears and a second domy sound wave guide for surrounding each speaker unit in the first domy sound wave guide.
Meanwhile, in order to effectively dispose the plurality of speaker units in a narrow space not to overlap one another, an inner barrier wall, on which an embedded speaker unit is fixed, may be installed so that the embedded speaker unit is installed in the case, and a sound guide tube, which communicates with a sound wave exhaust hole of the sound wave guide from a front surface of the embedded speaker unit, may be installed so that sound wave generated in the embedded speaker unit fixed on the barrier wall is guided to the sound wave guide.
Brief Description of the Drawings The above and other aspects and advantages of the present invention will become more apparent by describing in detail exemplary embodiments thereof with reference to the attached drawings in which:
FIG. 1 is a side cross-sectional view illustrating one side of a multi-channel headphone according to an embodiment of the present invention;
FIG. 2 is a front view illustrating an inside of FIG. 1 ;
FIG. 3 is a side cross-sectional view illustrating one side of a multi-channel headphone according to another embodiment of the present invention; FIG. 4 is a side cross-sectional view illustrating one side of a multi-channel headphone according to an embodiment of the present invention;
FIG. 5 is a side cross-sectional view illustrating one side of a multi-channel headphone according to an embodiment of the present invention; and
FIG. 6 is a side cross-sectional view illustrating one side of a multi-channel headphone according to an embodiment of the present invention.
Best Mode for Carrying Out the Invention
Hereinafter, the present invention will be described in detail by describing exemplary embodiments of the invention with reference to the accompanying drawings.
As shown in FIGS. 1 and 2, a multi-channel headphone, according to an embodiment of the present invention, for constituting multiple channels, such as 3.1 channel, 4.1 channel, 5.1 channel, 6.1 channel, and 7.1 channel, includes a plurality of multi-channel speaker units 10, a sound wave guide 20, and a case 30.
Here, each of the multi-channel speaker units 10 receives a multi-channel sound signal output from an amplifier (receiver). As shown in FIG. 2, each multi-channel speaker unit 10 includes a center-channel speaker unit 11 installed in an upper side of the sound wave guide 20, a front-channel speaker unit 12 installed in the front of the sound wave guide 20, a rear (rear-center)-channel speaker unit 13 installed in the rear of the sound wave guide 20, a side-channel speaker unit 14 installed in the center of the sound wave guide 20, and a multi-woofer channel speaker unit 15 installed in a lower side of the sound wave guide 20. In addition, the speaker units 10 may be disposed in a variety of positions so that a sufficient sound-field sensitivity is formed. Accordingly, two identical center-channel sound signals are input into the center-channel speaker unit 11 so that a virtual center channel is formed in the front of the listener's ears, and a front channel is formed on front right and left of the listener's ears, a side channel is formed on right and left of the listener's ears, a rear channel (or virtual rear-center channel) is formed on rear right and left of the listener's ears, and two identical woofer-channel speaker units 15 form a multi-woofer.
The sound wave guide 20 is an installation surface in which the speaker units 10 are fixedly installed. The speaker units 10 are disposed in the sound wave guide 20 at predetermined intervals. The sound wave guide 20 has a domy or concave inside so that each sound wave generated in the speaker units 10 faces a listener's ear hole zone A. The sound wave guide 20 focuses a direction of each of the speaker units 10 concavely and forms a circular dome inside the speaker units 10, thereby forming an echo space. The sound wave guide 20 may have all shapes in which a concave echo space is formed, as well as the domy shape. In addition, a curvature radius and a reflection/anti-reflection surface processing ratio of the sound wave guide 20 are determined according to the ratio of desired direct wave (sound wave directly transferred from a speaker unit to a listener's ears) to reflected wave (sound wave generated in the speaker unit, which is reflected on several reflective surfaces and is indirectly transferred to the listener's ears), and a plurality of scattering protrusions 21 which induce scattering of the sound wave to form a sound field inside the sound wave guide 20, are formed in the sound wave guide 20. Accordingly, a designer determines the domy curvature radius or reflectivity of the sound wave guide 20 and the shape of the scattering protrusions 21 such that optimum sound-field sensitivity, field sensitivity, and high sound quality are acquired.
In addition, a cushion ring 40 is installed in a rim of the sound wave guide 20, and a vibration element (not shown) is connected to the cushion ring 40 so that the listener can feel sound vibration when playing games.
In addition, the case 30 surrounds and protects the rear surfaces of the sound wave guide 20 and the speaker units 10. The case 30 closes a reverse-phase sound generated in the rear surface of the speaker units 10.
Meanwhile, as shown in FIG. 3, a separate inner enclosure 50 for surrounding the rear surface of the multi-channel speaker unit 10 is formed in each of the multi-channel speaker unit 10. The enclosure 50 may have a closed shape in which all speaker units 10 are completely closed. However, as shown in FIG. 4, each enclosure 50 of the center-channel speaker unit 11 , the front-channel speaker unit 12, the side-channel speaker unit 14, and the rear-channel speaker unit 13 has a closed shape, and the woofer-channel speaker unit 15 has no enclosure, or the enclosure 50 thereof has an opened shape (base reflector type) in which a vent 22 is formed, thereby reinforcing a low frequency band. Here, the case 30 has a concave inside so as to induce rear surface reflection of the base reflector type speaker unit, that is, the woofer-channel speaker unit 15, or a short sound guide tube 23 which guides reflected sound wave to the sound wave guide 20, is installed in the case 30.
In addition, as shown in FIG. 5, the sound wave guide 20 includes a first domy sound wave guide 201 for surrounding a listener's ears and a second domy sound wave guide 202 for surrounding each speaker unit in the first domy sound wave guide 201 so that the listener can feel a clearer sound.
The shape and kind of the domy sound wave guide 20 are diverse and may be modified and changed by those skilled in the art without departing from the spirit of the present invention.
Meanwhile, as shown in FIG. 6, an inner barrier wall 80 on which the speaker unit 60 is fixed, is installed so that an embedded speaker unit 60 or a vibration element 70 that vibrates at a low frequency band is installed in the case 30, and a sound guide tube 90, which communicates with a sound wave exhaust hole 25 of the sound wave guide 20 from the front surface of the embedded speaker unit 60, is installed so that sound wave generated in the embedded speaker unit 60 fixed on the barrier wall 80 is guided to the sound wave guide.
Thus, when due to a minimum diameter of the speaker units 10, the speaker units 10 are not directly installed in the sound wave guide 20 but the number of the speaker units 10 is increased by multi-channel design, the embedded speaker unit 60 is disposed on the barrier wall 80 so that the speaker units 10 do not overlap, and the sound wave exhaust hole 25 is formed in the sound wave guide 20 so that sound wave generated in the embedded speaker unit 60 is exhausted to the sound wave exhaust hole 25 through the sound guide tube 90 and the speaker units 10 and 60 having many numbers (many channels) are compactly installed in a narrow space.
The present invention is not limited to the above-described embodiments, and it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention.
For example, the above-described embodiments are limited to a multi-channel speaker unit, such as 6.1 channel or 7.1 channel, and a multi-channel speaker unit having a variety of shapes may be applied to the above-described embodiments.
While this invention has been particularly shown and described with reference to preferred embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Industrial Applicability As described above, in a multi-channel headphone according to the present invention, by using a concave sound wave guide so that a directional point at which each speaker unit faces is positioned inside an ear hole zone, sound resolution is improved, and by improving a directional sensitivity of each channel, sound separation and field sensitivity of multiple channels are increased. In addition, by respectively reflecting a part of direct sound generated in a speaker unit into a sound wave guide and changing the direct sound into indirect sound and by scattering noise caused by collision with indirect sounds or interference, spatial sensitivity and sound-field sensitivity are increased, and simultaneously, by forming the sound wave guide and scattering protrusions and by tuning a scattering ratio and reflectivity, a sound quality is improved.

Claims

What is claimed is:
1. A multi-channel headphone comprising: a plurality of multi-channel speaker units; a sound wave guide in which the speaker units are disposed at predetermined intervals and which has a concave inside so that a sound wave generated, by the speaker units travels toward a listener's ear hole zone; and a case, which surrounds and protects the rear surfaces of the sound wave guide and the speaker units.
2. The headphone of claim 1 , wherein each of the multi-channel speaker units comprises: a center-channel speaker unit, which is installed in an upper side of the sound wave guide; a front-channel speaker unit, which is installed in the front of the sound wave guide; a rear (rear-center)-channel speaker unit, which is installed in the rear of the sound wave guide; a side-channel speaker unit, which is installed in the center of the sound wave guide; and a multi-woofer channel speaker unit, which is installed in a lower side of the sound wave guide.
3. The headphone of claim 1 or 2, wherein a separate inner enclosure for surrounding a rear surface of the multi-channel speaker unit is formed in the multi-channel speaker unit, an enclosure of the center-channel speaker unit, the front-channel speaker unit, the side-channel speaker unit, and the rear-channel speaker unit has a closed shape, and the woofer-channel speaker unit has no enclosure, or an enclosure thereof has an opened shape (base reflector type).
4. The headphone of claim 1 , wherein the sound wave guide has a domy or concave shape in which a curvature radius and a reflection/anti-reflection surface processing ratio are determined according to a ratio of desired direct wave to reflected wave, and a plurality of scattering protrusions, which induce scattering of the sound wave so that a sound field is formed inside the speaker unit, are formed in the sound wave guide, and the sound wave guide includes a first domy sound wave guide for surrounding a listener's ears and a second domy sound wave guide for surrounding each speaker unit in the first domy sound wave guide.
5. The headphone of claim 1 , wherein the case has a concave inside so as to induce rear surface reflection of the base reflector type speaker unit, or a sound guide tube, which guides reflected sound wave to the sound wave guide, is installed in the case.
6. The headphone of claim 1 , wherein a cushion ring is installed in a rim of the sound wave guide, and a vibration element, which vibrates at a low frequency band, is installed in the cushion ring, the sound wave guide, or the case.
7. The headphone of claim 1 , wherein an inner barrier wall, on which an embedded speaker unit is fixed, is installed so that the embedded speaker unit is installed in the case, and a sound guide tube, which communicates with a sound wave exhaust hole of the sound wave guide from a front surface of the embedded speaker unit, is installed so that sound wave generated in the embedded speaker unit fixed on the barrier wall is guided to the sound wave guide.
PCT/KR2003/002551 2002-11-26 2003-11-25 Multi-channel headphone WO2004049753A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2003284757A AU2003284757A1 (en) 2002-11-26 2003-11-25 Multi-channel headphone

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2002-0074125 2002-11-26
KR10-2002-0074125A KR100490868B1 (en) 2002-11-26 2002-11-26 Multi-channel headphone

Publications (1)

Publication Number Publication Date
WO2004049753A1 true WO2004049753A1 (en) 2004-06-10

Family

ID=32388227

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2003/002551 WO2004049753A1 (en) 2002-11-26 2003-11-25 Multi-channel headphone

Country Status (3)

Country Link
KR (1) KR100490868B1 (en)
AU (1) AU2003284757A1 (en)
WO (1) WO2004049753A1 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2412534A (en) * 2004-03-22 2005-09-28 Cotron Corp Structure of multi-channel home theatre headphones
CN101340737B (en) * 2007-07-04 2010-10-27 日本胜利株式会社 Headphones
WO2013027044A1 (en) * 2011-08-19 2013-02-28 Flare Audio Holdings Ltd. Loudspeaker system with semi-circular loudspeaker configuration
WO2013040828A1 (en) * 2011-09-22 2013-03-28 深圳市冠旭电子有限公司 Headset
WO2021248709A1 (en) * 2020-06-12 2021-12-16 陈晨 Earphone
EP3935867A4 (en) * 2019-03-06 2022-11-23 Turgut, Mehmet Tunç Over-ear headphones having speaker units equipped with surround sound members

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI310661B (en) 2006-08-23 2009-06-01 Cotron Corp Earphone
KR101583768B1 (en) * 2015-01-28 2016-01-08 이승보 5.1 channel headphone
KR101727020B1 (en) * 2016-02-23 2017-04-14 레프릭오디오주식회사 Hybrid type dynamic speaker having two or more nozzle hole

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR980013505A (en) * 1996-07-02 1998-04-30 구자홍 Audio input and output devices for surround headphones
KR20010103813A (en) * 2001-08-24 2001-11-24 김성일 Bass reflex-type headphone

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200271621Y1 (en) * 2001-12-24 2002-04-12 주이－슈 후앙 Headphone

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR980013505A (en) * 1996-07-02 1998-04-30 구자홍 Audio input and output devices for surround headphones
KR20010103813A (en) * 2001-08-24 2001-11-24 김성일 Bass reflex-type headphone

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2412534A (en) * 2004-03-22 2005-09-28 Cotron Corp Structure of multi-channel home theatre headphones
GB2412534B (en) * 2004-03-22 2006-10-18 Cotron Corp Earphone structure with a composite sound field
US7463748B2 (en) 2004-03-22 2008-12-09 Cotron Corporation [Earphone structure with a composite sound field ]
CN101340737B (en) * 2007-07-04 2010-10-27 日本胜利株式会社 Headphones
WO2013027044A1 (en) * 2011-08-19 2013-02-28 Flare Audio Holdings Ltd. Loudspeaker system with semi-circular loudspeaker configuration
WO2013040828A1 (en) * 2011-09-22 2013-03-28 深圳市冠旭电子有限公司 Headset
EP3935867A4 (en) * 2019-03-06 2022-11-23 Turgut, Mehmet Tunç Over-ear headphones having speaker units equipped with surround sound members
WO2021248709A1 (en) * 2020-06-12 2021-12-16 陈晨 Earphone

Also Published As

Publication number Publication date
AU2003284757A1 (en) 2004-06-18
KR20040046279A (en) 2004-06-05
KR100490868B1 (en) 2005-05-24

Similar Documents

Publication Publication Date Title
EP1481570B1 (en) Loudspeaker with shaped sound field
EP3276980B1 (en) Earphone
JP4806638B2 (en) Sound receiver
JP5528715B2 (en) In-ear earphone
US20020014369A1 (en) System for integrating mid-range and high frequency acoustic sources in multi-way loudspeakers
EP0593191B1 (en) Multiple driver electroacoustical transducing
US10659872B2 (en) Speaker apparatus
EP0605224A1 (en) Television set speaker system
US5844176A (en) Speaker enclosure having parallel porting channels for mid-range and bass speakers
KR101690524B1 (en) Double Resonant Speaker Unit And Multi-Way Earphone Comprising The Same
JPH09149487A (en) Electroacoustic conversion system
WO2004049753A1 (en) Multi-channel headphone
JP2006502657A (en) Sound reproduction device with improved directivity
JPH0410899A (en) Loud speaker device
EP4075824B1 (en) Loudspeaker
EP3449642B1 (en) Bass reflex tube for a loudspeaker
KR20060116159A (en) Speaker apparatus and reproducing apparatus
JP7212264B2 (en) Diffuser, speaker and electronic musical instrument equipped with same
KR100810184B1 (en) Apparatus for the redistribution of acoustic energy
KR102053263B1 (en) Earphone having structure for improving quality of sound
US20040109576A1 (en) Multi-channel earphone module
JP2624256B2 (en) Headphone
JP2606441B2 (en) In-vehicle speaker device
KR102559769B1 (en) Unitary type set assembly structure of speaker unit
JPS6143360Y2 (en)

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BW BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE EG ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NI NO NZ OM PG PH PL PT RO RU SC SD SE SG SK SL SY TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): BW GH GM KE LS MW MZ SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LU MC NL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG

121 Ep: the epo has been informed by wipo that ep was designated in this application
DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
122 Ep: pct application non-entry in european phase
NENP Non-entry into the national phase

Ref country code: JP

WWW Wipo information: withdrawn in national office

Country of ref document: JP