KR20100121176A - Wirelss bone conduction headset and method for outputting audio signal using the same - Google Patents

Wirelss bone conduction headset and method for outputting audio signal using the same Download PDF

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Publication number
KR20100121176A
KR20100121176A KR1020090040215A KR20090040215A KR20100121176A KR 20100121176 A KR20100121176 A KR 20100121176A KR 1020090040215 A KR1020090040215 A KR 1020090040215A KR 20090040215 A KR20090040215 A KR 20090040215A KR 20100121176 A KR20100121176 A KR 20100121176A
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KR
South Korea
Prior art keywords
audio signal
output
bone conduction
noise level
speaker
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KR1020090040215A
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Korean (ko)
Inventor
이영호
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(주)그란츠에이앤티
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Priority to KR1020090040215A priority Critical patent/KR20100121176A/en
Publication of KR20100121176A publication Critical patent/KR20100121176A/en

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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
    • H04R3/00—Circuits for transducers, loudspeakers or microphones
    • H04R3/04—Circuits for transducers, loudspeakers or microphones for correcting frequency response
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2410/00—Microphones
    • H04R2410/05—Noise reduction with a separate noise microphone
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2420/00—Details of connection covered by H04R, not provided for in its groups
    • H04R2420/07—Applications of wireless loudspeakers or wireless microphones
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2460/00—Details of hearing devices, i.e. of ear- or headphones covered by H04R1/10 or H04R5/033 but not provided for in any of their subgroups, or of hearing aids covered by H04R25/00 but not provided for in any of its subgroups
    • H04R2460/13—Hearing devices using bone conduction transducers

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)
  • Circuit For Audible Band Transducer (AREA)

Abstract

The present invention discloses a wireless bone conduction headset and an audio signal output method using the same. The present invention includes a speaker and a bone conduction vibration unit used in a general earphone (headset) in one headset, and outputs an audio signal through any one of the speaker and bone conduction vibration unit, or both through the user's choice By outputting the audio signal, the user listens to the audio signal through the speaker in a normal environment, and the audio signal through the bone conduction vibrator when it is necessary to listen to the audio signal through the speaker or external sound depending on external noise or circumstances. When listening to the audio signal through both, the headset can listen to the audio signal more effectively by adaptively adjusting the output of the speaker and bone conduction vibration unit and the output of vibration and frequency band according to the ambient noise level. Effect.

Description

Wireless bone conduction headset and method for outputting audio signal using same {wiress bone conduction headset and method for outputting audio signal using the same}

The present invention relates to a wireless headset, and more particularly to a wireless bone conduction headset and an audio signal output method using the same.

There are two ways in which humans can hear sound: air conduction and bone conduction.

Air conduction is a method in which sound is transmitted to the inner ear through the eardrum and is used in general speakers, earphones, and headsets. The air conduction path proceeds in the order of the eardrum, the osseous bone, the ovary, and the inner ear. In the case of the earphone, there was a problem that strong pressure constantly irritated the eardrum to damage the inner ear.

To solve this problem is a headset using bone conduction. Bone conduction means that sound through the cranial bone is transmitted to the cochlea and through the auditory nerve to the brain.

A headset using bone conduction is a method of transmitting sound by allowing vibrations from a bone conduction vibrator in close contact with the skull to reach the inner ear through the head bone.

By using this bone conduction method, it is possible to prevent the deafness caused by long-term use, and not to cover the ears, thereby eliminating frustration, and listening to music while listening to music, so that while driving or walking There is an effect that can easily recognize the external danger, there is an effect that can listen to music, even in a high noise environment. In addition, people with acquired hearing impairment or senile deafness, that is, those who have learned the language, can hear sounds using bone conduction earphones / headsets.

However, in the case of a bone conduction type phone / headset, in general, since the bass output is weaker than that of a general earphone / headset, there is a problem in that it does not produce a satisfactory effect when listening to music.

The problem to be solved by the present invention is a combination of a general earphone (headset) and bone conduction earphone (headset) by wireless to adjust the output between the bone conduction earphone (headset) and the general earphone (headset) according to the environment and the user's choice The present invention provides a bone conduction earphone (headset) and an audio signal output method using the same.

Wireless bone conduction headset of the present invention for solving the above problems, the wireless communication unit for wirelessly receiving and outputting an audio signal from an external electronic device; A speaker for converting the audio signal into an acoustic signal and outputting the audio signal; A bone conduction vibration unit converting the audio signal into vibration and outputting the vibration signal; An input unit for generating mode information according to a user's operation; And a controller configured to control the audio signal to be output through at least one of the speaker and the bone conduction vibration unit according to the mode information.

In addition, when the mode information is the first mode, the controller may control the audio signal to be output only through the speaker.

In addition, when the mode information is the second mode, the controller controls the audio signal to be output only through the bone conduction vibration unit, and transmits an EQ control signal for requesting transmission of an audio signal reinforced with a bass region. Through the transmission to the external electronic device.

The apparatus may further include an equalizing unit configured to reinforce and output a bass region of the audio signal according to an EQ control signal. When the mode information is the second mode, the controller may transmit the EQ control signal to the equalizing unit together with the audio signal. The equalizing unit may reinforce the bass region of the input audio signal and output the same to the bone conduction vibration unit.

The apparatus may further include a microphone for measuring an external noise level, and when the mode information is the third mode, the controller controls the audio signal to be simultaneously output through the speaker and the bone conduction vibration unit, depending on the noise level. The intensity of the audio signal output from the speaker and the bone conduction vibration unit may be adjusted.

The controller may control the output of the bone conduction vibration unit to be higher than the output of the bone conduction vibration unit when the external noise level is higher than the reference noise level, and to reduce the output of the speaker to the output of the reference noise level. When the external noise level is lower than the reference noise level, the output of the bone conduction vibration unit may be lower than the output when the reference noise level is higher, and the output of the speaker may be higher than the output when the reference noise level is higher. have.

On the other hand, the audio signal output method of the present invention for solving the above problems, (a) receiving an audio signal from an external electronic device, and querying the mode information selected by the user; (b) when the mode information indicates a first mode, converting the audio signal into a sound through a speaker and outputting the sound; (c) converting the audio signal into vibration through the bone conduction vibration unit and outputting the vibration information when the mode information indicates the second mode; And (d) outputting the audio signal through the speaker and the bone conduction vibration unit when the mode information indicates a third mode.

Also, in the step (c), the EQ control signal requesting the transmission of the audio signal reinforced with the bass region is transmitted to the external electronic device, and the audio signal reinforced with the bass region is received from the external electronic device. Can be.

In addition, in step (c), the bass region of the audio signal may be reinforced and output.

In addition, the step (d), (d1) when the mode information indicates the third mode, measuring the ambient noise level; And (d2) the intensity of the audio signal output from the speaker and the bone conduction vibration unit according to the ambient noise level.

In addition, in the step (d2), comparing the ambient noise level and the reference noise level, when the ambient noise level is higher than the reference noise level, the output of the bone conduction vibration unit outputs higher than the output when the reference noise level, the speaker The output of the output is lower than the output at the reference noise level, and when the ambient noise is lower than the reference noise level, the output of the bone conduction vibration unit outputs lower than the output at the reference noise level, the output of the speaker It can output higher than the output at the reference noise level.

The present invention includes a speaker and a bone conduction vibration unit used in a general earphone (headset) in one headset, and outputs an audio signal through any one of the speaker and bone conduction vibration unit, or both through the user's choice By outputting the audio signal, the user can listen to the audio signal through the speaker in a normal environment, and through the bone conduction vibrator when it is necessary to listen to the audio signal through the speaker or external sound depending on external noise or circumstances. When listening to the audio signal through both, the headset can listen to the audio signal more effectively by adaptively adjusting the output of the speaker and bone conduction vibration unit and the output of vibration and frequency band according to the ambient noise level. The effect is possible.

In particular, in the case of bone conduction type phones / headsets in general, since the bass output is weaker than general earphones / headsets, in order to solve the problem of not having a satisfactory effect when listening to music, the present invention can be operated as bone conduction. Even if the bass part is reinforced by the air vibration earphone speaker, it can reproduce and deliver more rich sound, and also the bone conduction and the existing earphone can be converted and analyzed through the EQ of the wireless earphone. In order to enhance the sound of the speaker, the sound being listened to by the external sound is reinforced according to the frequency band of the external sound so that the sound being listened to by the external sound is more effective.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

The earphone (headset) (hereinafter referred to as "bone conduction headset") in which the bone conduction earphone (headset) and the general earphone (headset) of the present invention are combined is used to receive audio signals from electronic devices such as MP3, PMP, mobile phones and computers. Receive wirelessly and output the audio signal to one of the bone conduction vibration unit (abbreviated as "vibrator") and ordinary speaker (abbreviated as "speaker") according to the external environment or user's choice, Output simultaneously to the eastern and speaker.

1 is a view illustrating a communication process between a wireless bone conduction headset and an external electromagnetic period according to a first embodiment of the present invention, Figure 2 is a bone conduction headset 100 and an external electronic device according to a preferred embodiment of the present invention It is a block diagram showing the detailed configuration of the device 200.

1 and 2, the wireless bone conduction headset 100 of the present invention wirelessly receives an audio signal from the external electronic device 200.

In addition, when the wireless bone conduction headset 100 of the present invention outputs an audio signal only through the bone conduction vibration unit 180, the bass region of the original audio signal so that the bass of the audio signal can be more faithfully output to the user. The control unit transmits an EQ control signal to the external electronic device 200 instructing to transmit the audio signal reinforced with the electronic signal, and the electronic device 200 receiving the EQ control signal transmits the audio signal reinforced with the bass region to a bone conduction headset ( 100).

Referring to FIG. 2, the bone conduction headset 100 of the present invention includes a first wireless communication unit 110, a headset controller 120, a microphone 140, an input unit 130, a first amplifier 150, and a speaker ( 160, a second amplifier 170, and a bone conduction vibration unit 180.

Referring to the functions of each component, the first wireless communication unit 110 performs a wireless communication with the external electronic device 200 to receive an audio signal from the external electronic device 200, performs amplification and filtering to perform a headset control unit ( 120). In addition, the first wireless communication unit 110 transmits the EQ control signal input from the headset control unit 120 to the electronic device 200.

The first amplification unit 150 amplifies the audio signal input from the headset control unit 120 to output to the speaker 160, the speaker 160, like the speaker 160 of the general earphones sound the audio signal which is an electrical signal Convert it to a signal and output it to the user. The speaker 160 is inserted into the user's ear or installed inside the outer housing surrounding the ear.

The second amplifier 170 amplifies and outputs an audio signal input from the headset controller 120 to a signal sufficient to drive the bone conduction vibration unit 180, and the bone conduction vibration unit 180 is a skull of the user. It generates a vibration in accordance with the signal input from the second amplifying unit 170 in close contact with the audio signal to the user. The bone conduction vibration unit 180 may be installed together in an outer housing in which the speaker 160 is installed to be in close contact with the skull of the user, or may be installed in a separate configuration from the housing in which the speaker 160 is installed.

The input unit 130 includes a mode selector 132, a volume controller 134, and the like. First, the mode selector 132 selects one of the first to third modes according to a user's operation from the user and outputs mode information to the headset controller 120.

The first mode is a mode for listening to the audio signal only through the speaker 160, the second mode is a mode for listening to the audio signal only through the bone conduction vibrator 180, and the third mode is a bone conduction with the speaker 160. The vibration unit 180 is a mode for simultaneously listening to an audio signal.

The volume controller 134 receives a control signal (volume control signal) for the volume output to the user through the speaker 160 and the bone conduction vibrator 180 from the user and outputs it to the headset controller 120.

The microphone 140 measures noise around the bone conduction headset 100 and outputs the noise to the headset controller 120.

The headset controller 120 outputs an audio signal through the speaker 160, the bone conduction vibration unit 180, or both through the mode information input from the mode selector 132.

First, in the first mode, the headset controller 120 controls the received audio signal through the speaker 160 in the same manner as in a general earphone (headset) according to the volume control signal input from the volume controller 134. Output to.

In the second mode, the headset controller 120 transmits the above-described EQ control signal to the external electronic device 200 to reinforce the bass region of the audio signal, which is a disadvantage of the bone conduction headset 100, and the external electronic device 200. The audio signal from which the bass region is reinforced is received from the bone conduction vibration unit 180 and output.

In the third mode, the headset controller 120 controls the audio signal to be output through both the speaker 160 and the bone conduction vibrator 180. In this case, as described above, when the ambient noise level is high, it is more effective to output the audio signal to the user through the bone conduction vibration unit 180 than the speaker 160.

Therefore, the headset controller 120 measures the ambient noise level input from the microphone 140, and when the ambient noise level is higher than the reference noise level, the output from the bone conduction vibration unit 180 is higher than the output when the reference noise level is obtained. The first amplifying unit 150 and the second amplifying unit 170 are controlled so that the output of the speaker 160 is lower than the output at the reference noise level.

In addition, when the ambient noise level is lower than the reference noise level, the headset controller 120 lowers the output when the bone conduction vibration unit 180 is the reference noise level, and when the output of the speaker 160 is the reference noise level. The first amplifier 150 and the second amplifier 170 are controlled to be higher than the output.

On the other hand, the external electronic device 200 is not limited to its implementation if it is a configuration that can reproduce the audio signal and wirelessly transmitted from the inside, such as MP3 player, PMP, mobile phone, computer. The external electronic device 200 includes a second wireless communication unit 210, an electronic device control unit 220, and an equalizing unit 230.

The second wireless communication unit 210 transmits the audio signal input from the electronic device controller 220 to the bone conduction headset 100 in a wireless manner, and transmits the EQ control signal received from the bone conduction headset 100 to the electronic device controller ( 220).

When the equalizing unit 230 receives the EQ control signal from the electronic device controller 220, the equalizing unit 230 reinforces and outputs the bass region in the audio signal currently transmitted to the bone conduction headset 100.

The electronic device controller 220 controls the functions of the components included in the electronic device 200, transmits an audio signal to the bone conduction headset 100 through the second wireless communication unit 210, and the bone conduction headset 100. Equalizer control signal received from the output to the equalizing unit 230.

3 is a flowchart illustrating an audio signal output method according to an exemplary embodiment of the present invention. Referring to FIG. 3, first, when a user turns on the wireless bone conduction headset 100 to listen to an audio signal such as music or radio broadcast using the wireless bone conduction headset 100, the wireless bone conduction headset ( Communication is performed between the electronic device 100 and the external electronic device 200, and the external electronic device 200 reproduces audio data (modulation in the case of radio) and wirelessly transmits the audio data to the wireless bone conduction headset 100 (S310).

When the wireless bone conduction headset 100 receives an audio signal, the wireless bone conduction headset 100 checks whether the mode information on the listening method set by the user is the first mode (S320), and in the case of the first mode, the audio signal only through the speaker 160. Outputs (S322).

On the other hand, if it is not the first mode to check whether the second mode (S330), in the second mode to generate an EQ control signal for requesting to transmit the audio signal reinforced the bass region to generate an external electronic device In step S332.

Upon receiving the EQ control signal, the external electronic device 200 transmits the audio signal having the enhanced bass region to the wireless bone conduction headset 100 (S334), and the wireless bone conduction headset 100 has the audio signal supplemented with the bass region. To output through the bone conduction vibration unit 180 (S336).

On the other hand, if the first mode and the second mode is not checked whether the third mode (S340), when the user sets the third mode, the wireless bone conduction headset 100 using the microphone 140 After measuring the ambient noise level (S342) and comparing the ambient noise level with the reference noise level, and after adjusting the output strength of the speaker 160 and the bone conduction vibration unit 180 according to the ambient noise level (S344), the speaker 160 and bone bone The audio signal is output through the vibration unit 180 (S346).

4 is a block diagram showing a detailed configuration of a bone conduction headset and an external electronic device according to a second preferred embodiment of the present invention. In the example shown in FIG. 4, the headset control unit and the equalizing unit inside the bone conduction headset output and control the relative reinforcement signals for the low sound and the external noise frequency and intensity to the first and second amplifiers.

Referring to FIG. 4, the electronic device according to the second embodiment only performs a function of wirelessly outputting an audio signal.

Meanwhile, the bone conduction headset 100 according to the second embodiment includes a first wireless communication unit 110, a headset control unit 120-2, an equalizing unit 190, a microphone 140, an input unit 130, and a first amplification. The unit 150, the speaker 160, the second amplifier 170, and the bone conduction vibration unit 180 are included.

Since the functions of the components of the bone conduction headset 100 according to the second embodiment are the same as those of the first embodiment except for the headset controller 120-2 and the equalizing unit 190, the descriptions of the other components will be described. Omit.

The headset controller 120-2 according to the second embodiment operates as follows according to mode information input from all the selectors 132.

First, in the first mode, the headset controller 120-2 outputs the received audio signal to the equalizer 190 according to the volume control signal input from the volume controller 134, and equalizes the 190. Outputs an audio signal and a control signal input from the headset controller 120-2 to the first amplifier 150, and the first amplifier 150 amplifies the audio signal according to the input volume control signal. Output to the user through the speaker 160 in the same manner as (headset).

In the second mode, the headset controller 120-2 sends the EQ control signal to the equalizer 190 to instruct the bass region reinforcement together with the audio signal to reinforce the bass region of the audio signal, which is a disadvantage of the bone conduction headset 100. The equalizing unit 190 outputs the audio signal in which the bass region of the input audio signal is reinforced with the volume control signal to the second amplifying unit 170 according to the EQ control signal, and the second amplifying unit 170. The audio signal output from the equalizing unit 190 to the bone conduction vibration unit 180 according to the volume control signal.

In the third mode, the headset controller 120-2 controls the audio signal to be output through both the speaker 160 and the bone conduction vibrator 180. In this case, as described above, when the ambient noise level is high, it is more effective to increase the output of the bone conduction vibration unit 180 than the speaker 160.

Therefore, the headset controller 120 measures the ambient noise level input from the microphone 140, and when the ambient noise level is higher than the reference noise level, the output from the bone conduction vibration unit 180 is higher than the output when the reference noise level is obtained. The first amplifying unit 150 and the second amplifying unit 170 are controlled so that the output of the speaker 160 is lower than the output at the reference noise level.

In addition, when the ambient noise level is lower than the reference noise level, the headset controller 120 lowers the output when the bone conduction vibration unit 180 is the reference noise level, and when the output of the speaker 160 is the reference noise level. The first amplifier 150 and the second amplifier 170 are controlled to be higher than the output.

On the other hand, the audio signal output method according to the second preferred embodiment of the present invention is compared with the first embodiment described with reference to FIG. 3, in the case of the first embodiment in step S332 in the second mode to the external electronic bass While transmitting an EQ control signal requesting region reinforcement and receiving an audio signal having a low bass region reinforced from an external electronic device, the second embodiment reinforces and outputs a bass region of an audio signal directly from the equalizing unit 190. Only there is a difference. Therefore, detailed description is omitted.

So far I looked at the center of the preferred embodiment for the present invention. Those skilled in the art will appreciate that the present invention can be implemented in a modified form without departing from the essential features of the present invention. Therefore, the disclosed embodiments should be considered in an illustrative rather than a restrictive sense. The scope of the present invention is shown in the claims rather than the foregoing description, and all differences within the scope will be construed as being included in the present invention.

1 is a view illustrating a communication process between a wireless bone conduction headset and an external electronic device according to a preferred embodiment of the present invention.

2 is a block diagram showing a detailed configuration of a bone conduction headset and an external electronic device according to a first preferred embodiment of the present invention.

3 is a flowchart for explaining an audio signal output method according to a first embodiment of the present invention.

4 is a block diagram showing a detailed configuration of a bone conduction headset according to a second preferred embodiment of the present invention.

Claims (11)

A wireless communication unit wirelessly receiving and outputting an audio signal from an external electronic device; A speaker for converting the audio signal into an acoustic signal and outputting the audio signal; A bone conduction vibration unit converting the audio signal into vibration and outputting the vibration signal; An input unit for generating mode information according to a user's operation; And And a controller configured to control the audio signal to be output through at least one of the speaker and the bone conduction vibration unit in accordance with the mode information. The method of claim 1, wherein when the mode information is the first mode, The control unit is a wireless bone conduction headset, characterized in that for controlling the audio signal is output only through the speaker. The method of claim 1, wherein when the mode information is the second mode, The control unit controls the audio signal to be output only through the bone conduction vibration unit, and transmits an EQ control signal for requesting transmission of an audio signal reinforced with a bass region to the external electronic device through the wireless communication unit. Wireless bone conduction headset. The method of claim 1, Further comprising an equalizing unit for reinforcing and outputting the bass region of the audio signal according to the EQ control signal, If the mode information is the second mode, The control unit outputs the EQ control signal along with the audio signal to the equalizing unit, and the equalizing unit reinforces the bass region of the input audio signal and outputs the bone conduction vibration unit to the bone conduction vibration unit. The method of claim 1, Further includes a microphone for measuring the external noise level, When the mode information is the third mode, the controller controls the audio signal to be output at the same time through the speaker and the bone conduction vibration unit, and the audio signal output from the speaker and the bone conduction vibration unit according to the noise level. Wireless bone conduction headset, characterized in that for adjusting the intensity. The method of claim 5, wherein the control unit When the external noise level is higher than the reference noise level, the output of the bone conduction vibration unit is controlled to be higher than the output when the reference noise level, the output of the speaker is lower than the output when the reference noise level, When the external noise level is lower than the reference noise level, the output of the bone conduction vibration unit is lower than the output when the reference noise level, and the output of the speaker is characterized in that the control is higher than the output when the reference noise level. Wireless bone conduction headset. An audio signal output method performed in a wireless bone conduction headset, (a) receiving an audio signal from an external electronic device and inquiring mode information selected by a user; (b) when the mode information indicates a first mode, converting the audio signal into a sound through a speaker and outputting the sound; (c) converting the audio signal into vibration through the bone conduction vibration unit and outputting the vibration information when the mode information indicates the second mode; And and (d) outputting the audio signal through the speaker and the bone conduction vibration unit when the mode information indicates a third mode. The method of claim 7, wherein In the step (c), the EQ control signal for requesting the transmission of the audio signal enhanced the bass region is transmitted to the external electronic device, and receives and outputs the audio signal reinforced by the bass region from the external electronic device An audio signal output method. The method of claim 7, wherein In the step (c), the audio signal output method characterized in that for reinforcing the bass region of the audio signal. 10. The method of claim 8 or 9, wherein step (d) (d1) if the mode information indicates the third mode, measuring the ambient noise level; And (d2) The audio signal output method of claim 1, wherein the intensity of the audio signal output from the speaker and the bone conduction vibration unit is adjusted according to the ambient noise level. The method of claim 10, wherein the step (d2) By comparing the ambient noise level and the reference noise level, When the ambient noise level is higher than the reference noise level, the output of the bone conduction vibration unit outputs higher than the output when the reference noise level, and the output of the speaker is lower than the output when the reference noise level, When the ambient noise level is lower than the reference noise level, the output of the bone conduction vibration unit is output lower than the output when the reference noise level, and the output of the speaker outputs higher than the output when the reference noise level Audio signal output method comprising a.
KR1020090040215A 2009-05-08 2009-05-08 Wirelss bone conduction headset and method for outputting audio signal using the same KR20100121176A (en)

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KR101297828B1 (en) * 2013-04-25 2013-08-19 주식회사 지티엠 Acoustic apparatus using bone-conduction speaker
WO2015053418A1 (en) * 2013-10-08 2015-04-16 유한회사 청텍 Multifunctional sport headset
KR20170131378A (en) * 2015-03-27 2017-11-29 인텔 코포레이션 Intelligent conversion between air conduction speakers and tissue conduction speakers
KR20180090227A (en) 2018-07-23 2018-08-10 조성재 Hearing aid offering diffraction andbone-conduction sound
KR101965513B1 (en) * 2017-11-23 2019-04-03 구본희 Open-ear headphone and method for sound playback using the same
KR102039839B1 (en) * 2018-10-30 2019-11-01 연세대학교 원주산학협력단 Sound delivery system combined air conduction type and bone conduction type and driving method thereof
KR102048787B1 (en) * 2018-12-21 2019-11-26 (주)디트리플 Headphone having function of Bone Conduction and Air Conduction
KR20200074698A (en) * 2018-12-17 2020-06-25 (주)파트론 Sound device of bone conduction
US10699691B1 (en) * 2017-06-29 2020-06-30 Amazon Technologies, Inc. Active noise cancellation for bone conduction speaker of a head-mounted wearable device
KR102159377B1 (en) * 2019-05-27 2020-10-14 (주)파트론 System for outputting audio signal
KR102210900B1 (en) * 2019-10-31 2021-02-02 이명재 Bone conduction headset
KR20210015312A (en) * 2019-08-01 2021-02-10 (주)비피엠 Wearable acoustic device
KR20210059246A (en) 2019-11-15 2021-05-25 (주)텐서이어랩 Device and method for delivering sound combined with type of air conduction and type of bone conduction

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101297828B1 (en) * 2013-04-25 2013-08-19 주식회사 지티엠 Acoustic apparatus using bone-conduction speaker
WO2015053418A1 (en) * 2013-10-08 2015-04-16 유한회사 청텍 Multifunctional sport headset
KR20170131378A (en) * 2015-03-27 2017-11-29 인텔 코포레이션 Intelligent conversion between air conduction speakers and tissue conduction speakers
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