WO2012153784A1 - Dispositif d'écouteurs stéréophoniques - Google Patents

Dispositif d'écouteurs stéréophoniques Download PDF

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Publication number
WO2012153784A1
WO2012153784A1 PCT/JP2012/061918 JP2012061918W WO2012153784A1 WO 2012153784 A1 WO2012153784 A1 WO 2012153784A1 JP 2012061918 W JP2012061918 W JP 2012061918W WO 2012153784 A1 WO2012153784 A1 WO 2012153784A1
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WO
WIPO (PCT)
Prior art keywords
headphone
ear
unit
user
sensor
Prior art date
Application number
PCT/JP2012/061918
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English (en)
Japanese (ja)
Inventor
松村耕平
坂本大介
五十嵐健夫
Original Assignee
独立行政法人科学技術振興機構
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Application filed by 独立行政法人科学技術振興機構 filed Critical 独立行政法人科学技術振興機構
Publication of WO2012153784A1 publication Critical patent/WO2012153784A1/fr

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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
    • H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
    • H04R1/1041—Mechanical or electronic switches, or control elements
    • 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
    • H04R1/1016—Earpieces of the intra-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
    • H04R5/00—Stereophonic arrangements
    • H04R5/033—Headphones for stereophonic communication

Definitions

  • the present invention relates to a stereo headphone device that outputs an audio channel suitable for a user.
  • Headphones currently on the market are classified into types such as the inner ear type that is used by hanging on the ear shell, the canal type that is inserted deeply into the ear canal, and the headband type that is connected to the left and right sounding bodies in the headband. be able to.
  • types such as the inner ear type that is used by hanging on the ear shell, the canal type that is inserted deeply into the ear canal, and the headband type that is connected to the left and right sounding bodies in the headband.
  • many products are characterized in that the one used for the left ear and the one used for the right ear are substantially identical to each other.
  • an inclination sensor provided in a speaker unit detects the inclination of an ear, determines which direction the headphone is worn, and determines left and right audio channels.
  • the technology to do is described. Thereby, even when the user wears headphones in the direction opposite to the original direction, the left and right audio channels can be output correctly.
  • the earlobe detector installed inside the ear pad covering the user's ear detects the ear and determines in which direction the headphone is worn.
  • a technique for determining left and right audio channels is described.
  • the earlobe detector installed inside the earpad detects the user's earlobe.
  • the earlobe detector is disposed at a position where the earlobe is detected from the back of the user when headphones are worn, and can detect the earlobe by physical contact, a distance measurement result by an optical sensor, or the like.
  • the earlobe detector comes in front of the user, so that the detection switch and conductive rubber do not reach the earlobe, and the distance measured by the optical sensor becomes long.
  • JP 2007-6074 A Japanese Patent Laid-Open No. 2002-135887
  • the detection unit may reach the ear depending on the size of the ear or the shape of the ear as described above.
  • the contact of the device becomes large and the user's discomfort increases.
  • non-contact detection means such as an optical sensor is used, but since the earlobe is detected from the back of the ear, the direction of wearing the headphones where the earlobe is detected and the direction of wearing the headphones where the earlobe is not detected are detected.
  • the present invention has been made in view of the above-described problems, and an object of the present invention is to provide a stereo headphone device that can determine which ear the left and right headphone units are attached to.
  • the stereo headphone device performs the mounting direction detection and audio signal output processing by the following means or processing.
  • the stereo headphone device is an inner ear type that is used by hanging a headphone unit on a user's ear shell, or a canal type stereo headphone device that is used by inserting a headphone unit into a user's ear canal, Two headphone units with a built-in driver unit, and a sensor provided in at least one of the two headphone units, the earshell being attached to an ear on a predetermined side. Detects the sensor located at a position where the ear shell is not detected when it is attached to the ear on the other side, and outputs the left and right audio signals to either driver unit based on the detection signal of the sensor. Signal switching means for determining whether or not.
  • the senor detects the user's ear shell and determines the mounting direction. If it is determined that channel inversion is necessary, the audio channel is inverted and output to the driver unit. Therefore, the user can always obtain correct sound without being aware of the direction of wearing the headphones.
  • the senor may be a proximity sensor.
  • the proximity sensor it is possible to detect the user's ear shell without touching the skin, and there is an advantage that the user is not uncomfortable.
  • the stereo headphone device further includes wearing determination means for detecting whether or not the two headphone units are worn on both ears of the user, and the two headphone units are both of the user.
  • wearing determination unit determines that the device is not worn on the ear
  • the signal switching unit may mix the left and right audio signals output to both driver units.
  • the signal switching unit supplies a signal obtained by mixing the left and right channels to the left and right driver units. As a result, it is possible to transmit a natural voice to the user.
  • the stereo headphone device includes a pair of electrodes that are provided in each headphone unit and come into contact with the skin of the user wearing the headphones. It is good also as a characteristic that it is determined that the two headphone units are not worn on both ears of the user when measurement is made and no conduction is recognized between the electrodes.
  • the left and right electrodes are insulated. For this reason, it is possible to reliably determine that the headphone unit is not attached to both ears by measuring the electrical resistance between the electrodes by the wearing determination means.
  • the stereo headphone device may be a canal type stereo headphone device, and the electrode may be disposed in a portion of the headphone unit that is inserted into a user's external ear canal.
  • the electrode is disposed on a part that always touches the user's ear canal during use of the headphones.
  • the wearing determination means can more reliably determine that the headphone unit is not worn in both ears.
  • the stereo headphone device has a signal line connected to the driver unit and extending from the headphone unit, and the sensor is configured so that a user can place the headphone unit on the ear on the predetermined side.
  • the signal line When the signal line is attached in a downward direction, the signal line may be arranged to face the user's ear shell.
  • the senor is arranged at a position where the user wears the headphones so that the signal line faces downward, that is, in the normal usage pattern, facing the ear shell.
  • the stereo headphone device is a canal type stereo headphone device, wherein the headphone unit is connected to the protruding portion to be inserted into a user's external ear canal and a base portion that is connected to the protruding portion and is not inserted into the user's external ear canal.
  • the sensor may be arranged on the base.
  • the senor is disposed in a portion that is not inserted into the ear canal of the user of the headphone unit.
  • the stereo headphone device further includes a direction determining unit that determines a vertical direction of the headphone unit, and the direction determining unit determines that the headphone unit is turned upside down.
  • the signal switching means may invert the output destinations of the left and right audio signals determined based on the detection signal of the sensor.
  • the direction determining means may determine the vertical direction of the mounted headphone unit by acquiring vertical acceleration from an acceleration sensor provided in the headphone unit or by a user operation. It may be a feature.
  • the vertical direction of the headphone unit can be acquired by information from the acceleration sensor or by user operation.
  • the direction determination unit can reliably determine the vertical direction of the headphone unit.
  • stereo headphones that can determine which ear the left and right headphone units are worn on.
  • FIG. 1 is a schematic side view of a headphone device according to a first embodiment.
  • 1 is a schematic front view of a headphone device according to a first embodiment. It is a modification of the proximity sensor arrangement
  • the stereo headphone device assumes canal type and inner-ear type headphones.
  • a sensor for detecting the user's ear is arranged around the housing to discriminate the ear that is worn.
  • FIG. 1 is a diagram showing an appearance of the headphones according to the first embodiment
  • FIG. 2 is a functional configuration diagram of the headphones according to the first embodiment.
  • the headphone according to the first embodiment has a pair of headphone units including a housing 201a / b for storing a driver unit 107a / b as a sounding body and an ear canal insertion portion 202a / b.
  • the proximity sensor 105 is provided in one housing 201a.
  • the proximity sensor 105 is provided to detect the user's ear shell. When the user wears the headphone unit on one ear, the proximity sensor faces the ear shell, and when the user puts the head unit on the other ear, the proximity sensor 105 does not face the ear shell. In the position.
  • the proximity sensor 105 will be described later.
  • the ear canal insertion section 202a / b has a pair of electrodes 109a / b, and the electrodes are inserted into the user's ear canal when the user wears the headphones, and are arranged in a portion that comes into contact with the skin. Yes.
  • the stereo audio signal input to the headphones from the input signal line 103a / b is output to the left and right headphone units via the signal switching device 106 including the signal switching unit 101 and the mounting direction determination unit 102.
  • the mounting direction determination unit 102 determines the audio channel to be output to the left and right based on the input from the proximity sensor and the electrode, and the signal switching unit 101 transmits the audio of the determined channel via the output signal line 104a / b.
  • the proximity sensor 105 will be described. It is desirable that the proximity sensor 105 is disposed on the housing or in the vicinity of the housing so as not to come out of the user's ear shell, and the detection surface faces the front-rear direction of the user. With this arrangement, the proximity sensor faces the ear shell when the headphone unit is attached to one ear of the user, and the proximity sensor faces the opposite direction to the ear shell when the headphone unit is attached to the other ear. Therefore, it is possible to determine the left and right of the ear to which the housing is attached.
  • the proximity sensor 105 is preferably a sensor that can detect the presence of an object within several centimeters from the detection surface, such as an infrared sensor or an ultrasonic sensor.
  • the sensor used may be other than a proximity sensor for detecting the presence of an object. For example, a photoresistor may be used.
  • FIG. 3 is a side view showing a state in which the headphones according to the first embodiment are worn
  • FIG. 4 is a front view of the same.
  • the proximity sensor When this headphone is inserted into the left ear, the proximity sensor is in a position facing the front surface of the user as shown in FIGS. 3A and 4, so the proximity sensor does not detect the ear shell.
  • the proximity sensor when the same headphone is inserted into the right ear, as shown in FIG. 3B, the proximity sensor is positioned toward the back of the user, and thus detects the ear shell. Therefore, in the case of the headphones according to the present embodiment, the housing is inserted into the right ear when there is a response to the proximity sensor, and the housing is inserted into the left ear when there is no response to the proximity sensor. I understand.
  • the proximity sensor 105 is arranged facing the left side, but as shown in FIG. 5, it faces the right side. You may arrange. If the direction of the sensor is reversed, the logic for detecting the ear shell is also reversed.
  • the electrodes 109a / b are arranged on the part of the both-side headphone unit that comes into contact with the user's skin. In 1st Embodiment, it arrange
  • the wearing direction determination unit 102 acquires an input signal from the proximity sensor 105, determines which earphone the headphone on which the sensor is located is worn from the position where the proximity sensor is installed, On the other hand, it determines which channel is output. Then, the signal switching unit 101 outputs an appropriate channel to the left and right driver units based on the determination result.
  • the wearing direction determination unit 102 indicates that the headphones including the driver unit 107a are connected to the right ear as shown in FIG. It is determined that it has been inserted. Therefore, when the proximity sensor detects the ear shell, the signal switching unit 101 outputs the signal input from the left input signal line 103a to the output signal line 104b and the signal input from the right input signal line 103b. To the output signal line 104a. When the proximity sensor 105 does not detect the ear shell, the wearing direction determination unit 102 determines that the headphones including the driver unit 107a are inserted into the left ear as shown in FIG. Vice versa.
  • the mounting direction determination unit 102 does not determine the mounting direction, and the signal switching unit 101 mixes the left and right input channels. Specifically, a signal input from the input signal line 103a and a signal input from the input signal line 103b are mixed, and the same signal is output to the output signal line 104a and the output signal line 104b.
  • FIG. 6 is a flowchart showing the operation of the mounting direction determination unit 102.
  • the mounting direction determination unit 102 first determines whether or not there is conduction between the electrodes 109a / b in step S51. When there is no continuity, it means that the headphones are not inserted into both ears of one user, so the process proceeds to step S54, where the signal switching unit 101 mixes the audio signals of both channels and outputs each output signal. An audio signal is output to the line (104a / b). If conduction is recognized, the process proceeds to step S52 where the response of the proximity sensor is confirmed. In step S52, it is confirmed whether or not the proximity sensor has reacted.
  • step S55a the right channel audio signal is output to the side having the sensor, that is, the output signal line 104a, and the left channel is output to the side having no sensor, that is, the output signal line 104b. Output audio signals.
  • step S55b the left channel audio signal is output to the side having the sensor (output signal line 104a), and the right channel is output to the side having no sensor (output signal line 104b). Output audio signals.
  • the right / left ear decision logic is reversed, and therefore, in steps S55a and S55b, the opposite channels may be output. .
  • a proximity sensor is disposed in a headphone housing in a headphone of the type inserted into an ear.
  • the sensor is almost in close contact with the ear shell, and when the headphone is worn in the direction in which the proximity sensor does not detect the ear shell, Since there are no obstacles, the detection distance is infinite. That is, there is an advantage that the ear shell can be detected more accurately because it is not necessary to set the threshold value precisely as in the prior art.
  • the sensor does not go out of the ear shell as long as the headphones are worn, so that there is an advantage that malfunction does not occur during use.
  • the proximity sensor is disposed in the housing 201a and not disposed in the housing 201b.
  • the proximity sensor may be disposed in both housings for accurate detection.
  • it is preferable that the proximity sensor is arranged in a direction in which one proximity sensor detects the ear shell and the other proximity sensor does not detect the ear shell while the user wears the headphones.
  • contradictory results such as when both proximity sensors detect an object, re-detection is performed at a predetermined interval, and only the proximity sensor on the side where the variation in the detection result is small may be used. .
  • the proximity sensor may be disposed in the housing as in the present embodiment or connected to the housing as long as it can detect the user's ear shell. .
  • the sensor faces the ear shell when the headphones are worn in a direction in which the signal line faces downward.
  • the sensor changes the angle within a range in which the ear shell can be detected. It doesn't matter.
  • the electrodes 109a / b are provided in the portion that comes into contact with the ear canal as in the present embodiment, but may be provided on the housing as long as they are in contact with the skin.
  • the number of users may be determined based on whether or not there is electrical continuity between the electrodes. For example, the determination may be made by measuring the surface potential of the user's skin.
  • the inner ear type headphones that are used by being hung on the ear shell have a drawback that the cable is pulled downward depending on the size of the housing and the shape of the ear shell and is easily detached from the ear.
  • the headphones are turned upside down and the fall is prevented by hanging the cable on the ear shell. If such a method is used, right and left cannot be correctly determined from the detection result of the proximity sensor, and channel determination may fail.
  • means for correctly outputting the left and right channels is provided even in such usage.
  • FIG. 7 is a view showing a state where the headphones according to the first embodiment are mounted upside down.
  • the mounting direction determination unit 102 has a function of reversing the determination logic of the left and right channels by acquiring information that the housing is mounted upside down.
  • FIG. 8 is a functional configuration diagram according to the present embodiment.
  • the acceleration sensor 110 is disposed at a position where the acceleration in the vertical direction of the housing can be detected.
  • the acceleration sensor 110 detects about 9.8 m / s 2 which is a gravitational acceleration, and is turned upside down as shown in FIG. 9B.
  • the vertical direction of the housing can be determined by, for example, obtaining the sign of the detected acceleration.
  • the determination in the vertical direction may be performed using a sensor other than the acceleration sensor, or a mechanical switch that can be operated by the user may be provided, and if the switch is turned on, it may be determined that the upside down is reversed. .
  • the proximity sensor 105 faces in the opposite direction to the assumed direction, so the input logic from the sensor is inverted.
  • the proximity sensor 105 does not detect the ear shell, but detects the ear shell when the sensor is worn upside down as shown in FIG. Therefore, when the headphone according to the first embodiment is worn upside down, the wearing direction determination unit 102 determines that the driver unit 107a is worn on the right ear, so it is actually worn on the left ear. Despite being present, the right channel signal is output. Therefore, when the upside-down inversion of the housing is detected, the mounting direction determination unit 102 reverses the determination logic of the left and right channels and outputs an audio signal.
  • FIG. 10 shows a flowchart in which steps S53a and S53b for detecting upside down of the housing are added to the first embodiment.
  • steps S53a and S53b for detecting upside down of the housing are added to the first embodiment.
  • steps S53a and S53b after confirming the response of the proximity sensor (step S52), it is determined in steps S53a and S53b whether the housing is turned upside down.
  • the process proceeds from step S53a to step S55b, and from step S53b to step S55a, so that the left and right channels are reversed as compared with the case where the housing is not inverted.
  • the vertical direction is detected even when the headphones are mounted upside down, and the correct left and right channels are provided to the user. It becomes possible to output.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Stereophonic System (AREA)
  • Headphones And Earphones (AREA)

Abstract

L'invention porte sur un dispositif d'écouteurs stéréophoniques, lequel dispositif est apte à déterminer dans quelle oreille chacune des unités d'écouteur gauche et droit est disposée. Le dispositif d'écouteurs stéréophoniques est soit d'un type à l'intérieur de l'oreille, dans lequel l'unité d'écouteur est portée sur un pavillon de l'oreille d'un utilisateur, soit d'un type canal, dans lequel l'unité d'écouteur est insérée dans un canal auditif externe de l'utilisateur. Le dispositif d'écouteurs stéréophoniques comprend : deux unités d'écouteur dont chacune a une unité de moteur de haut-parleur incorporée ; un capteur disposé dans au moins l'une des deux unités d'écouteur, le capteur étant disposé en une position dans laquelle le pavillon de l'oreille est détecté si l'unité d'écouteur est disposée sur l'oreille sur un côté prédéterminé, et dans laquelle le pavillon de l'oreille n'est pas détecté si l'unité d'écouteur est disposée sur l'oreille sur l'autre côté ; et un moyen de commutation de signal qui détermine, sur la base d'un signal de détection à partir du capteur, à quelle unité de moteur de haut-parleur chacun des signaux audio gauche et droit doit être délivré en sortie.
PCT/JP2012/061918 2011-05-10 2012-05-09 Dispositif d'écouteurs stéréophoniques WO2012153784A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2011105421A JP2014143451A (ja) 2011-05-10 2011-05-10 ステレオヘッドホン装置
JP2011-105421 2011-05-10

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Cited By (3)

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WO2016029393A1 (fr) * 2014-08-27 2016-03-03 宇龙计算机通信科技(深圳)有限公司 Procédé et appareil de reconnaissance d'écouteur, procédé et appareil de commande d'écouteur et écouteur
CN112351359A (zh) * 2019-08-08 2021-02-09 联阳半导体股份有限公司 耳机及耳机佩戴侦测方法
CN113411702A (zh) * 2020-03-16 2021-09-17 维沃移动通信有限公司 一种声道配置方法及电子设备

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US10117012B2 (en) 2015-09-28 2018-10-30 Apple Inc. Wireless ear buds with proximity sensors
JP6624386B2 (ja) * 2016-03-09 2019-12-25 パナソニックＩｐマネジメント株式会社 ヘッドセットおよびヘッドセット装置
WO2018079139A1 (fr) * 2016-10-24 2018-05-03 ソニー株式会社 Dispositif de sortie de son, procédé d'exécution de fonction de dispositif de sortie de son, et programme
CN113411446B (zh) * 2020-03-16 2023-07-21 维沃移动通信有限公司 一种声道切换方法及电子设备

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WO2016029393A1 (fr) * 2014-08-27 2016-03-03 宇龙计算机通信科技(深圳)有限公司 Procédé et appareil de reconnaissance d'écouteur, procédé et appareil de commande d'écouteur et écouteur
CN106170989A (zh) * 2014-08-27 2016-11-30 宇龙计算机通信科技(深圳)有限公司 耳机的识别方法和装置、耳机的控制方法和装置、耳机
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CN106170989B (zh) * 2014-08-27 2019-06-11 宇龙计算机通信科技(深圳)有限公司 耳机的识别方法和装置、耳机的控制方法和装置、耳机
CN112351359A (zh) * 2019-08-08 2021-02-09 联阳半导体股份有限公司 耳机及耳机佩戴侦测方法
CN113411702A (zh) * 2020-03-16 2021-09-17 维沃移动通信有限公司 一种声道配置方法及电子设备
CN113411702B (zh) * 2020-03-16 2024-05-14 维沃移动通信有限公司 一种声道配置方法及电子设备

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