KR101900829B1 - Method and apparatus for controlling telephone voice - Google Patents

Abstract

The present invention relates to a call sound adjusting device which outputs a phase reversal signal of a phase opposite to a phase of a voice signal according to user voice and cancels the user voice, and a method thereof. The present invention cancels the user voice by using the phase reversal signal, minimizes noise through simple signal output and phase control and can protect privacy. The call sound adjusting device comprises: a microphone; a signal reversal part; a mouse speaker; a control part; and an ear speaker.

Description

TECHNICAL FIELD [0001] The present invention relates to a method and apparatus for controlling a telephone tone,

More particularly, the present invention relates to a technique for canceling a voice of a user by outputting a phase inversion signal having a phase opposite to that of a voice signal according to a voice of a user .

Due to the development of communication technology, various communication devices are rapidly spreading. The communication device includes not only a general telephone (a wire telephone) but also a mobile communication terminal such as a mobile phone. Especially now, the majority of people in Korea use mobile phones regardless of their age and gender.

BACKGROUND ART Generally, a mobile communication terminal includes a personal mobile communication terminal, a personal digital assistant (PDA), a smart phone, an international mobile telecommunication (IMT) LAN terminal and the like, and is capable of implementing various functions using an application program including wireless communication.

When a user performs a call through the mobile communication terminal, generally speaking, voice data is exchanged with the caller through a microphone and a speaker provided in the mobile communication terminal. In recent years, there has been a tendency to perform a call through a separate voice input / output device (e.g., a headset) that communicates with a mobile communication terminal by wire or wireless.

In recent years, due to the development of technology, radio waves have reached the subway, inside buildings, and enclosed spaces.

As the desire for communication increases and communication devices become widespread, many cases of inconvenience are caused by telephone calls. Especially, when a loud call is made in a subway, a theater, or a performance hall, there is a risk of disturbing the attention and rest of the other person, or exposing privacy information according to a call tone.

According to recently published research data, there is a problem that when a person who speaks only one-sided talk among telephone conversation causes anxiety and causes mental tension.

In addition, there is a case where a call sound is heard by the people around the receiver, and there is a problem that the privacy of the caller is exposed, and there is a problem that the surrounding people can hear the noise.

Accordingly, there is a need for a technique capable of attenuating a voice call caused by use of a communication device.

This technique is necessary for preventing a worker from interfering with work due to a voice call even when a large number of people simultaneously use a general phone (or a mobile communication terminal) in an office where a plurality of people work together, Applications in wireless phones or headsets are needed.

Korean Patent Laid-Open Publication No. 1020050117419 (published Dec. 13, 2005), "adjusting the size of a dial tone according to external noise of a mobile communication terminal and an external noise removing device" Korean Registered Patent No. 100810702 (registered on February 28, 2008), "Automatic volume control method and apparatus, and mobile communication terminal using the same"

The present invention provides a telephone tone control apparatus and method for protecting a privacy of a user and considering a person around by eliminating or reducing a sound of a transmission sound.

According to another aspect of the present invention, there is provided an apparatus for canceling a user's voice by using a phase inversion signal indicating a phase opposite to a phase of a voice signal according to a user's voice, Apparatus and method therefor.

The present invention also relates to a speech tone adjusting apparatus and method for controlling an optimum state of a speech tone by comparing an output of a synthesized speech signal obtained by synthesizing a speech signal according to a user's voice and a phase inversion signal, .

The present invention also provides a method and apparatus for controlling a call tone included in a conventional wired telephone, a mobile communication terminal, a tablet PC, a headset, and the like.

The apparatus for controlling a call tone in a privacy board according to an embodiment of the present invention includes a microphone for converting a voice of a user into a voice signal and a phase inversion signal for representing a phase opposite to a phase of a voice signal output from the microphone, A phase inverting signal generated by the signal inverting unit into a phase inverted voice and outputting the inverted phase inverted voice to a user's mouth direction; a phase inverting signal output from the mouse speaker and a voice output from the microphone; And a control unit for controlling the activation of the privacy mode in the predetermined environment.

The apparatus for controlling a call tone in a privacy board according to an embodiment of the present invention may further include a band-pass filter for removing noise by blocking a signal of a specific band included in the voice signal output from the microphone.

The signal inversion unit may generate the phase inversion signal indicating a phase opposite to the phase of the voice signal output from the band pass filter, and amplify and output the phase inversion signal to a predetermined size.

The mouse speaker is in close contact with the mouth of the user and can output the phase inversion sound according to the phase inversion signal to cancel the user's voice.

The control unit compares the output of the synthesized voice signal with the output of the voice signal output from the band pass filter to determine the degree of attenuation based on the voice of the user and outputs the phase inversion signal in a predetermined optimal state Can be controlled.

The control unit may control the audio signal output from the band pass filter to be output as the user's voice through the ear speaker.

The control unit may be configured to control activation of the privacy mode in the predetermined environment according to at least one of a position, a time and a day set by a user.

The control unit may disable the privacy mode in the normal mode and activate the privacy mode in at least one of a telephone call, a call with a specific recipient, and the predetermined environment.

A method for controlling a call tone by a call tone control apparatus in a privacy mode according to an exemplary embodiment of the present invention includes converting a user's voice received from a microphone into a voice signal and a phase opposite to a phase of a voice signal output from the microphone And outputting a phase inverted voice of the phase inversion signal to a mouse speaker positioned in the mouth direction of the user, and outputting the phase inversion signal output from the mouse speaker and the phase inverted signal output from the microphone And transmitting the synthesized speech signal obtained by synthesizing the speech signal to a receiver.

The method for controlling a call tone by the call tone control apparatus in the privacy mode according to an embodiment of the present invention may further include outputting the voice of the user received from the microphone to the ear speaker positioned in the ear direction of the user .

The step of converting into the voice signal may include removing noise by blocking a signal of a specific band included in the voice signal output from the microphone.

The generating and generating the phase inversion signal may generate the phase inversion signal representing a phase opposite to the phase of the output voice signal, amplifying the phase inversion signal to a predetermined size, and outputting the amplified signal.

The step of outputting the phase inverted voice may cancel the voice of the user by outputting the phase inverted voice according to the phase inversion signal to the mouse speaker placed in close contact with the mouth of the user.

The step of transmitting the synthesized voice signal to the receiver may include comparing the output of the synthesized voice signal and the output of the voice signal output from the microphone to determine the degree of attenuation based on the voice of the user, And controlling the phase inversion signal with the phase inversion signal.

According to the embodiment of the present invention, the sound of the transmitted sound is removed or reduced, thereby protecting the privacy of the user and taking care of the persons nearby.

Also, according to the embodiment of the present invention, the user's voice is canceled by using the phase inversion signal which indicates the phase opposite to the phase of the voice signal according to the user's voice, thereby minimizing the noise through simple signal output and phase control can do.

Also, according to the embodiment of the present invention, the optimal state of the telephone tone can be controlled by comparing the output of the synthesized voice signal obtained by synthesizing the voice signal according to the voice of the user and the phase inversion signal, and the output and phase of the voice signal.

In addition, according to the embodiment of the present invention, it is possible to attenuate a call sound by being included in a conventional wired telephone, a mobile communication terminal, a tablet PC and a headset.

1 is a block diagram illustrating a configuration of a call tone control apparatus according to an embodiment of the present invention.
FIG. 2 is a schematic view of a call tone control apparatus according to an embodiment of the present invention. Referring to FIG.
FIGS. 3A to 3C illustrate examples in which a call tone control apparatus according to an embodiment of the present invention is applied.
4A and 4B illustrate examples in which a call tone control apparatus according to another embodiment of the present invention is applied.
5 is a flowchart illustrating a method for controlling a call tone according to an embodiment of the present invention.

Hereinafter, embodiments according to the present invention will be described in detail with reference to the accompanying drawings. However, the present invention is not limited to or limited by the embodiments. In addition, the same reference numerals shown in the drawings denote the same members.

Also, terminologies used herein are terms used to properly represent preferred embodiments of the present invention, which may vary depending on the viewer, the intention of the operator, or the custom in the field to which the present invention belongs. Therefore, the definitions of these terms should be based on the contents throughout this specification.

1 is a block diagram illustrating a configuration of a call tone control apparatus according to an embodiment of the present invention.

Referring to FIG. 1, the apparatus for controlling a call tone in a privacy mode according to an embodiment of the present invention outputs a phase inversion signal having a phase opposite to a phase of a voice signal according to a user's voice, thereby canceling the user's voice.

Accordingly, the telephone tone control apparatus 100 according to the embodiment of the present invention includes a microphone 110, a signal inversion unit 120, a mouse speaker 130, and a control unit 140.

The microphone 110 converts the user's voice into a voice signal.

For example, the microphone 110 refers to a device that converts voice or vibration into a voice signal, and is typically a general microphone that receives voice and converts the voice into a voice signal. According to an embodiment of the present invention, it may include an ear microphone provided at the user's ear to convert the vibration of the ear to a voice signal, and a vibration microphone attached to the neck of the user to convert vibrations of the vocal cords into voice signals. You can also use a microphone.

According to an embodiment, the microphone 110 may be included in a wired telephone, a mobile communication terminal, a tablet PC, and a headset, and may be a built-in or external type.

The signal inverting unit 120 generates and generates a phase inversion signal indicating a phase opposite to the phase of the voice signal output from the microphone 110. [

According to an embodiment of the present invention, the apparatus for controlling a call sound further includes a band-pass filter (not shown) for removing a noise by blocking a signal of a specific band included in a voice signal output from the microphone 110 .

The signal inverting unit 120 generates a phase inversion signal representing a phase opposite to the phase of the voice signal output from the band pass filter, and can amplify and output the phase inversion signal to a predetermined size.

For example, the method of generating the phase inversion signal by inverting the phase of the voice signal can use the same method as the method disclosed in the prior art, and various other methods can be applied, so that the method is not limited.

The mouse speaker 130 converts the phase inversion signal generated by the signal inversion unit 120 into a phase inversion sound and outputs it to the user's mouth direction.

For example, in order to cancel the user's voice (transmission sound) received by the microphone 110, the transmission sound is reversed and synthesized with the original sound, thereby preventing transmission to the user (sender) or the ears of nearby people.

Accordingly, the mouse speaker 130 is in close contact with the user's mouth, and can output a phase-reversed voice in accordance with the phase inversion signal to synthesize it with the user's voice (original sound), thereby canceling the user's voice.

For example, since the sound (voice) is a low frequency of 3 kHz or less, the lower the degree of close contact between the mouthpiece 130 and the mouth of the user, the greater the delay time of inversion and the sharpening effect is drastically deteriorated. Accordingly, the mouse speaker 130 should be as close as possible to the mouth of the user.

The control unit 140 controls the synthesized voice signal synthesized with the phase inversion signal output from the mouse speaker 130 and the voice signal output from the microphone 110 to be transmitted to the receiver and controls the privacy mode in a predetermined environment do.

The control unit 140 compares the output of the synthesized voice signal, the output of the voice signal output from the band pass filter or the output of the voice signal output from the microphone, determines the attenuation information based on the voice of the user, Phase inversion signal can be controlled.

For example, the control unit 140 compares the voice signal with the synthesized voice signal, and if the output of the synthesized voice signal is lower than a specific standard as compared with the output of the voice signal, the voice is attenuated as much as the voice signal. .

However, if the output of the synthesized speech signal is higher than a specific reference, the speech speech is not attenuated well. If the output of the phase inversion signal is smaller than the output of the speech signal, It is possible to control the signal inverting unit 120 to make the output of the signal larger.

Also, if the phases of both signals (phase inverted signal and voice signal) are not exactly opposite, it is also possible to move the phase of the phase inversion signal appropriately so as to control the state to be the most attenuated.

For example, if the output of the synthesized speech signal is 10% or less of the output of the speech signal, it means that 90% of the speech voice of the user is attenuated, so that sufficient attenuation can be determined. However, when the output of the synthesized voice signal exceeds 50% of the voice signal output, only half of the output is attenuated. Therefore, it is necessary to change the amplitude or phase of the phase inversion signal so that the attenuation can be more efficiently performed.

Here, the specific criterion can protect the privacy of the user's voice and indicate the optimum state of the telephone tone for consideration of the person around the recipient, and the criterion is not limited because it may vary according to the setting of the user.

In addition, the control unit 140 can control the synthesized voice signal to be transmitted to the receiver, and can transmit the voice of the user to the other user (recipient) on the carrier wave for transmission through the communication network. This means that a voice signal is transmitted from a conventional telephone.

The control unit 140 may control the audio signal output from the band pass filter to be output as a user's voice through the ear speaker 150.

For example, when the user can not hear his / her utterance and voice, the controller 140 can control the voice output of the user through the ear speaker 150, The speaker 150 can directly confirm the voice.

The control unit 140 may receive a synthesized speech signal obtained by synthesizing a phase inversion signal output from the mouse speaker 130 and a speech signal output from the microphone 110 in addition to the voice of the user received by the microphone 110 Sound to be outputted through the ear speaker 150. [0064]

The control unit 140 may activate a privacy mode in a predetermined environment according to one or more of the position, time, and day of week set by the user.

For example, the control unit 140 may deactivate the privacy mode based on the normal mode. The control unit 140 may be configured to set a predetermined position of at least one of a home, a company, a subway, and a public place, a time (e.g., a bed time) The privacy mode can be activated according to a predetermined environment according to the setting.

According to the embodiment, the control unit 140 can activate the privacy mode even when a telephone of a specific recipient set by the user is received, or when a normal telephone is received (predetermined environment). However, the setting environment as described above can be variously changed by the user, so the present invention is not limited thereto.

In addition, the control unit 140 may receive the user's consent for activation of the privacy protection mode, or may activate the privacy protection mode automatically according to the setting of the user.

For example, when receiving a telephone call, the control unit 140 guides at least one of the wired telephone, the mobile communication terminal, the tablet PC, and the headset to the information of the receiver and the privacy mode or the general mode, And control activation of the privacy mode.

FIG. 2 is a schematic view of a call tone control apparatus according to an embodiment of the present invention. Referring to FIG.

2, the microphone 210 receives the voice of the user 10 (the sender or the caller) and converts the voice into a voice signal. The band pass filter 221 filters the voice signal output from the microphone 210 Band signal to remove the noise and transmit it to the signal inversion unit 220. [

The signal inversion unit 220 generates and generates a phase inversion signal indicating a phase opposite to the phase of the received voice signal. The mouse speaker 230 converts the phase inversion signal generated by the signal inversion unit 220 into a phase inversion And outputs it to the mouth direction of the user.

Accordingly, the synthesized voice signal obtained by synthesizing the phase inversion signal output from the mouse speaker 230 and the voice signal output from the microphone 210 is provided to the receiver 20. The synthesized speech signal can be combined with the phase inversion signal and the speech signal to cancel the user's speech.

The voice signal according to the user's voice output from the band-pass filter 221 may be output through the ear speaker 250 in the ear direction of the user. According to the embodiment, the ear speaker 250 converts a synthesized voice signal obtained by synthesizing the phase inversion signal output from the mouse speaker 230 and the voice signal output from the microphone 210 into voice, in addition to the voice of the user It is possible.

FIGS. 3A to 3C illustrate examples in which a call tone control apparatus according to an embodiment of the present invention is applied.

More specifically, FIG. 3A shows an example of a telephone tone control apparatus according to an embodiment of the present invention applied to a wire telephone, and FIG. 3B shows an example of a telephone tone control apparatus according to an embodiment of the present invention, And FIG. 3C shows an example of a call tone control apparatus according to an embodiment of the present invention, which is applied to a mobile phone external type.

3A, a telephone tone control apparatus 300 according to an exemplary embodiment of the present invention may be included in a wired telephone 30, and a microphone 310 and a mouse speaker 330 may be included in a mouthpiece of a user 10 And the ear speaker 350 may be located near the ear of the user 10 in the receiver. In addition, the signal inverting unit (not shown) and the control unit (not shown) are included in the fixed telephone 30 regardless of the position.

3B, the telephone tone control apparatus 300 according to the embodiment of the present invention may be included in the mobile phone 40, and the microphone 310 and the mouse speaker 330 are located near the mouth of the user 10 , And the ear speaker 350 may be located near the ear of the user 10. In addition, a signal inverting unit (not shown) and a control unit (not shown) are included in the cellular phone 40.

3C, a telephone tone adjusting apparatus 300 according to an embodiment of the present invention may be included in a mobile phone earphone 50 or a headphone, and a microphone 310 and a mouse speaker 330 may be included in the mobile phone earphone 50 And the ear speaker 350 may be located near the ear of the user 10. [ The signal inverting unit (not shown) and the control unit (not shown) are embedded in the mobile phone 40 or included in the earphone 50 of the mobile phone.

3A to 3C, a telephone tone control apparatus 300 according to an exemplary embodiment of the present invention receives a voice signal according to a voice of a user 10 converted through a microphone 310, Generates a phase inversion signal indicative of the opposite phase and outputs it through the mouse speaker 330. Thereafter, the synthesized voice signal obtained by synthesizing the phase inversion signal output from the mouse speaker 330 and the voice signal output from the microphone 310 is controlled to be transmitted to the receiver.

According to an exemplary embodiment of the present invention, a voice tone control apparatus 300 according to an embodiment of the present invention can convert a voice signal received through a microphone 310 into a voice of a user 10 through an ear speaker 350 .

4A and 4B illustrate examples in which a call tone control apparatus according to another embodiment of the present invention is applied.

More specifically, FIG. 4A shows an example of a call tone control apparatus according to another embodiment of the present invention applied to a headset, and FIG. 4B shows an outline of a speech tone control apparatus according to another embodiment of the present invention in a headset FIG.

For example, the headset 60 may be used in a call center where agents are grouped together in a group, and when the counseling voice of the individual counselor interferes with the side counselor. However, the environment in which the headset 60 is applied may vary, so the present invention is not limited thereto.

Referring to FIG. 4A, a headset 60 to which a call tone control apparatus 400 according to another embodiment of the present invention is applied includes a microphone 410, a mouse speaker 430, and an ear speaker 450.

The microphone 410 having the built-in mouse speaker 430 can be provided separately or separately from the mouse speaker 430 and the microphone 410 having the built-in mouse speaker 430 can be extended to the earphone This is possible.

Referring to FIG. 4B, the telephone tone control apparatus 400 according to another embodiment of the present invention converts a voice of a user into a voice signal using a microphone 410, Lt; RTI ID = 0.0 > a < / RTI >

Thereafter, the phase inversion signal is converted into a phase inversion signal through the mouse speaker 430 and output to the user's mouth direction, and the voice of the user received through the microphone 410 is transmitted through the ear speaker 450 to the user's ear . Accordingly, the user can directly hear the voice that he uttered.

The speech-tone adjusting apparatus 400 according to another embodiment of the present invention includes a synthesized speech signal obtained by synthesizing a phase inversion signal outputted through the mouse speaker 430 and a speech signal according to the user's voice received through the microphone 410 To the receiver. The receiver can receive the user's voice canceled by the phase inversion signal.

The voice-tone adjusting apparatus 400 according to another embodiment of the present invention uses a method of converting a voice uttered by a user into a signal and inverting it, and outputting the inverted phase inversion signal to a user's mouth to cancel the voice. In order to maximize the canceling effect of the user's voice, the user's mouth, the mouse speaker 430, and the microphone 410 must be brought into close contact with each other as much as possible.

According to another embodiment of the present invention, a telephone tone control apparatus 400 according to another embodiment of the present invention is a device for preventing a noise such as snoring or conversation from being heard by another person, Lt; RTI ID = 0.0 > noise. ≪ / RTI >

For example, sound travels 340 m / sec in air, so the arrival time is 1/340 sec when distance d is 1 m. In other words, if the speaker is placed between the user and the receiver, the time required to create the offset sound and send it to the speaker is made within 1/680 seconds, so that the noise can be canceled.

Accordingly, the call tone control apparatus 400 according to another embodiment of the present invention can cancel noise such as snoring or conversation generated by the user through the phase inversion voice output from the speaker, Lt; RTI ID = 0.0 > canceled < / RTI >

5 is a flowchart illustrating a method for controlling a call tone according to an embodiment of the present invention.

The method shown in FIG. 5 may be performed by the apparatus for controlling a call tone in the privacy mode according to the embodiment of the present invention shown in FIG.

Referring to FIG. 5, in step 510, a voice of a user received from a microphone is converted into a voice signal.

For example, step 510 may include removing noise by blocking a signal of a specific band included in a voice signal output from the microphone using a bandpass filter.

And generates and generates a phase inversion signal indicating a phase opposite to the phase of the voice signal output from the microphone in step 520.

Step 520 may be a step of generating a phase inversion signal indicating a phase opposite to the phase of the output voice signal, and amplifying and outputting the signal in a predetermined size.

In step 530, the phase inverted voice of the phase inversion signal is output to the mouse speaker located in the mouth direction of the user.

Step 530 may be a step of canceling the voice of the user by outputting a phase inverted voice corresponding to the phase inversion signal to the mouse speaker placed in close contact with the mouth of the user.

In step 540, the synthesized voice signal obtained by synthesizing the phase inversion signal output from the mouse speaker and the voice signal output from the microphone is transmitted to the receiver.

Step 540 may include comparing the output of the synthesized speech signal and the output of the voice signal output from the microphone to determine the degree of attenuation based on the user's voice and controlling the phase inversion signal to a predetermined optimal state have.

 According to another aspect of the present invention, there is provided a method of controlling a telephone tone, the method comprising the steps of: outputting a user's voice received from a microphone with an ear speaker positioned in the ear of the user;

The apparatus described above may be implemented as a hardware component, a software component, and / or a combination of hardware components and software components. For example, the apparatus and components described in the embodiments may be implemented within a computer system, such as, for example, a processor, a controller, an arithmetic logic unit (ALU), a digital signal processor, a microcomputer, a field programmable array (FPA) A programmable logic unit (PLU), a microprocessor, or any other device capable of executing and responding to instructions. The processing device may execute an operating system (OS) and one or more software applications running on the operating system. The processing device may also access, store, manipulate, process, and generate data in response to execution of the software. For ease of understanding, the processing apparatus may be described as being used singly, but those skilled in the art will recognize that the processing apparatus may have a plurality of processing elements and / As shown in FIG. For example, the processing unit may comprise a plurality of processors or one processor and one controller. Other processing configurations are also possible, such as a parallel processor.

The software may include a computer program, code, instructions, or a combination of one or more of the foregoing, and may be configured to configure the processing device to operate as desired or to process it collectively or collectively Device can be commanded. The software and / or data may be in the form of any type of machine, component, physical device, virtual equipment, computer storage media, or device , Or may be permanently or temporarily embodied in a transmitted signal wave. The software may be distributed over a networked computer system and stored or executed in a distributed manner. The software and data may be stored on one or more computer readable recording media.

The method according to an embodiment may be implemented in the form of a program command that can be executed through various computer means and recorded in a computer-readable medium. The computer-readable medium may include program instructions, data files, data structures, and the like, alone or in combination. The program instructions to be recorded on the medium may be those specially designed and configured for the embodiments or may be available to those skilled in the art of computer software. Examples of computer-readable media include magnetic media such as hard disks, floppy disks and magnetic tape, optical media such as CDROMs and DVDs, magnetic optical media such as floppy disks, magnetooptical media, and hardware devices specifically configured to store and execute program instructions such as ROM, RAM, flash memory, and the like. Examples of program instructions include machine language code such as those produced by a compiler, as well as high-level language code that can be executed by a computer using an interpreter or the like. The hardware devices described above may be configured to operate as one or more software modules to perform the operations of the embodiments, and vice versa.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. For example, it is to be understood that the techniques described may be performed in a different order than the described methods, and / or that components of the described systems, structures, devices, circuits, Lt; / RTI > or equivalents, even if it is replaced or replaced.

Therefore, other implementations, other embodiments, and equivalents to the claims are also within the scope of the following claims.

10: User (sender or sender)
20: Recipient
30: Landline
40: Mobile phone
50: Cell Phone Earphones
60: Headset
210, 310, 410: Microphone
220: Signal anti-
221: Bandpass filter
230, 330, 430: Mouse Speaker
250, 350, 450: Ear speaker
300, 400: Telephone tone control device

Claims (15)

1. A communication tone control apparatus in a privacy protection mode,
A microphone for converting a user's voice into a voice signal;
A signal inverting unit for generating and generating a phase inversion signal indicating a phase opposite to a phase of a voice signal output from the microphone;
A mouse speaker formed as close as possible to the mouth of the user, for converting the phase inversion signal generated by the signal inversion unit into a phase inversion sound and outputting it to the user's mouth direction;
A controller for controlling the activation of the privacy mode in a predetermined environment by controlling the synthesized voice signal synthesized with the phase inversion signal output from the mouse speaker and the voice signal output from the microphone to be transmitted to the receiver; And
And an ear speaker for outputting the voice signal according to the voice of the user or converting the synthesized voice signal synthesized with the phase inversion signal outputted from the mouse speaker and the voice signal outputted from the microphone into voice and outputting the voice, ,
The control unit
Controls the audio output of at least one of the mouse speaker and the ear speaker, controls activation of the privacy mode in the preset environment according to at least one of the position, time and day set by the user, Mode, and activates the privacy mode in at least one of a telephone call, a call with a specific recipient, and the predetermined environment. The method according to claim 1,
A band-pass filter that removes noise by blocking a signal of a specific band included in the voice signal output from the microphone;
Further comprising: 3. The method of claim 2,
The signal inverting unit
And generates the phase inversion signal representing a phase opposite to the phase of the voice signal output from the band pass filter, amplifies the phase inversion signal to a predetermined size, and outputs the amplified signal. The method of claim 3,
The mouse speaker
And outputs the phase inversion voice in accordance with the phase inversion signal so as to cancel the user's voice. 5. The method of claim 4,
The control unit
A synthesizer for comparing the output of the synthesized speech signal with the output of the speech signal output from the band pass filter to determine a degree of attenuation based on the user's voice and controlling the phase inversion signal to a predetermined optimal state, Regulating device. 3. The method of claim 2,
The control unit
And the voice signal output from the band-pass filter is output through the ear speaker to the user's voice. delete delete delete delete delete delete delete delete delete

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