KR101584585B1

KR101584585B1 - Apparatus for providing voice secret function and method thereof

Info

Publication number: KR101584585B1
Application number: KR1020140134498A
Authority: KR
Inventors: 조종찬
Original assignee: 엘아이지넥스원 주식회사
Priority date: 2014-10-06
Filing date: 2014-10-06
Publication date: 2016-01-13

Abstract

An apparatus and a method for providing an audio-visualizing function according to the present invention are disclosed. The apparatus for providing a voice sounding function according to the present invention is a device for providing a voice sounding function by multiplying the input voice signal by a preset non-inversion frequency, adding the multiplied voice signal to a predetermined tone frequency, A transmitter for generating a spoken voice signal as a result; A modulator for modulating the non-voice signal by a predetermined modulation scheme and transmitting the modulated voice signal; And a controller for determining the non-frequency and the tone frequency based on the date information preset by the user, the offset information of the non-frequency, and the offset information of the tone frequency.

Description

[0001] APPARATUS FOR PROVIDING VOICE SECRET FUNCTION AND METHOD THEREOF [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention [0002] The present invention relates to a speech non-speech technique, and more particularly, to an apparatus and a method for providing a speech speech function for varying a non-speech frequency and a tone frequency.

In modern life, various methods are provided for communication with distant people, but conversation with others using telephone is still the most important part.

BACKGROUND ART [0002] In recent years, due to the rapid development of a mobile communication network, a lot of calls with a mobile terminal have been made.

However, whether using a fixed-line phone or a mobile terminal, it is not always free from eavesdropping or interception by a third party. Many people, especially those in charge of secrets, government, and companies, feel uneasy when making calls containing confidential contents It is true.

SUMMARY OF THE INVENTION Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and it is an object of the present invention to provide an apparatus and method for setting a non-excitation frequency and a tone frequency based on offset information for setting a non- And to provide an apparatus for and a method for providing a voice speech function for determining a frequency.

However, the objects of the present invention are not limited to those mentioned above, and other objects not mentioned can be clearly understood by those skilled in the art from the following description.

According to an aspect of the present invention, there is provided an apparatus for providing a voice call function, the apparatus comprising: a voice input unit for receiving a voice signal and multiplying the voice signal by a preset non- A transmitter for additionally calculating a predetermined tone frequency and generating an encoded voice signal as a result of the addition; A modulator for modulating the non-voice signal by a predetermined modulation scheme and transmitting the modulated voice signal; And a control unit for determining the non-frequency and the tone frequency based on the date information preset by the user, the offset information of the non-frequency, and the offset information of the tone frequency.

Preferably, said non-occurring frequency is calculated by a formula N = Modulo ((year * month * day-offset) / 5) and the selected value N is determined to be a non-normal frequency corresponding to the calculated selected value N, The offset is an offset of a predetermined frequency set by a user and is a natural number within a range of 1 to 10.

Preferably, the tone frequency is determined by a formula {Modulo ((year * month * day + offset) / 200)} + 60, wherein the offset is an offset of the tone frequency preset by the user, And is a natural number within a range.

Preferably, the transmitter comprises: a multiplier for multiplying the input voice signal by the predetermined non-inverting frequency; A filter for filtering the multiplied speech signal to remove noise; And an adder for adding the filtered tone signal to the predetermined tone frequency.

The transmitter according to the present invention is connected to the input of the multiplier and switches to a first path for directly transmitting the input transmission signal to the multiplier depending on whether the voice ignition function is set or to output the received transmission signal to the adder And a switch for switching to a second path for bypassing and transmitting the second path.

According to another aspect of the present invention, there is provided a method for providing a voice call function, comprising the steps of: when receiving a voice signal, multiplying the voice signal inputted thereto by a preset non-inference frequency, adding the multiplied- A generating step of generating a speech signal which is computed as a result of the computation; And a transmission step of modulating the non-voice signal by a predetermined modulation scheme and transmitting the non-voice signal and the tone frequency, wherein the non-inversion frequency and the tone frequency are set by a user in accordance with preset date information, offset information of the non- Information is determined based on information.

Preferably, the generating includes multiplying the voice signal input through the multiplier by the preset non-inverting frequency, Filtering the multiplied speech signal through a filter to remove noise; And adding the filtered speech signal and the preset tone frequency through an adder.

In addition, the generating step according to the present invention switches the first transmission path to the first path through which the input transmission signal is directly transmitted to the multiplier, depending on whether the voice calling function is set or not, through the switch connected to the input terminal of the multiplier, To the second path for bypassing the adder to the adder.

Thus, according to the present invention, the non-excitation frequency and the tone frequency are set, and the non-excitation frequency and the tone frequency are determined based on the offset information for setting the non-excitation frequency and the tone frequency, There is an effect that can be.

FIG. 1 is a block diagram of an apparatus for providing a voice encoding function according to an embodiment of the present invention. Referring to FIG.
FIG. 2 is a view for explaining the principle of applying a non-excitation frequency according to an embodiment of the present invention.
3 is a diagram for explaining the principle of applying the tone frequency according to an embodiment of the present invention.
4 is a diagram illustrating a transmission method for providing a voice call function according to an embodiment of the present invention.
5 is a diagram illustrating a receiving method for providing a voice call function according to an embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an apparatus and method for providing a voice call function according to an embodiment of the present invention will be described with reference to the accompanying drawings. The present invention will be described in detail with reference to the portions necessary for understanding the operation and operation according to the present invention.

In describing the constituent elements of the present invention, the same reference numerals may be given to constituent elements having the same name, and the same reference numerals may be given thereto even though they are different from each other. However, even in such a case, it does not mean that the corresponding component has different functions according to the embodiment, or does not mean that the different components have the same function. It should be judged based on the description of each component in the example.

In particular, according to the present invention, a scrambler inversion frequency and a tone frequency for voice signal are set, and based on the offset information for setting the date information, the non-frequency and the tone frequency, We propose a new speech enhancement function to determine the frequency and tone frequency.

FIG. 1 is a block diagram of an apparatus for providing a voice encoding function according to an embodiment of the present invention. Referring to FIG.

1, an apparatus for providing a voice call function according to the present invention includes a transmitter 110, a modulator 120, a demodulator 130, a receiver 140, a controller 150, a storage 160 ).

The transmitting unit 110 may output a voice signal received from a user by using a non-generating frequency and a tone frequency. The transmitter 110 may include a switch 111, a multiplier 112, a filter 113, an adder 114, and a signal generator 115.

The switch 111 can be switched to another path depending on whether the voice call function is set or not. For example, the switch 111 may be switched to the first path if the voice speech function is set, and may be switched to the second path if the voice speech function is not set.

Here, in the first path, the speech signal is coded using both the non-coded frequency and the tone frequency, and in the second path, the speech signal is coded using only the tone frequency.

The multiplier 112 multiplies the input speech signal by the selected non-conversion frequency.

The filter 113 may filter only the signal of the desired frequency among the multiplied signals. Here, the filter 113 may use a band pass filter (BPF).

FIG. 2 is a view for explaining the principle of applying a non-excitation frequency according to an embodiment of the present invention.

Referring to FIG. 2, an inverted signal and a frequency-shifted signal can be obtained by multiplying the voice signal by the non-inverting frequency fc and calculating the inverted signal based on the non-inverting frequency fc.

The frequency shifted signal can then be removed through the filter to leave only the inverted signal.

The adder 114 may add the filtered speech signal to a preset tone frequency.

The signal generator 115 may generate a predetermined tone frequency to enhance the security function. This tone frequency can be used, for example, in the range of 60 to 260 Hz.

3 is a diagram for explaining the principle of applying the tone frequency according to an embodiment of the present invention.

Referring to FIG. 3, a preset tone frequency may be added to the filtered speech signal and transmitted. The thus summed tone frequency is used to enable the receiver if it matches the tone frequency being listened to at the receiver and to disable it if not.

The modulator 120 may receive a voice signal in which the tone frequencies are summed and modulate the input voice signal based on a predetermined modulation scheme to transmit the modulated voice signal.

The demodulator 130 can demodulate the received voice signal and extract the voice signal that is the result of the demodulation.

The receiving unit 140 may extract the voice signal as a result of filtering the non-voice signal, and output the extracted voice signal. The receiver 140 may include a tone detector 141, a first filter 142, a switch 143, a multiplier 144, and a second filter 145.

The tone detector 141 can determine whether or not the tone frequency of the spoken voice signal matches the tone frequency that is waiting to be received. That is, the tone detector 141 determines whether or not the tone frequency used at the transmitting side matches the tone frequency used at the receiving side.

As a result of this determination, all the elements of the receiver are activated only when they match, and when they do not match, it is determined that the signal is not a signal to be received and can be deactivated.

The first filter 142 may filter the speech signal to remove noise.

The switch 143 can be switched to another path depending on whether the voice warning function is set or not. For example, the switch 143 may be switched to the first path if the voice-over function is set, and may be switched to the second path if the voice-over function is not set.

Here, in the first path, the speech signal is inverted using both the non-frequency and the tone frequency, and in the second path, the speech signal is inverted using only the tone frequency.

The multiplier 144 may multiply the filtered speech signal by a preset non-inversion frequency.

The second filter 145 may filter the multiplied speech signal to extract a desired frequency.

The control unit 150 determines a non-normal frequency using the offset information of the non-inverted frequency and the preset date information if the voice non-inverting function is set by the user, and outputs the tone frequency Can be determined.

At this time, the non-normal frequency is applied only when the voice non-function is set, and the tone frequency is always applied when transmitting or receiving a voice signal irrespective of whether the voice non-function is set or not.

The non-excitation frequency and the tone frequency can be determined through the following process, which will be described in detail.

First, the non-excitation frequency to be used for voice speech can be set as shown in Table 1 below.

Selection value frequency One 3000 2 3100 3 3200 4 3300 5 3400

The selection value N for selecting the non-selected frequency is expressed by the following equation (1).

[Equation 1]

N = Modulo ((year * month * day - offset) / 5)

For example, when the date information is October 02, 2014 and the offset of the non-frequency is 3, Modulo ((2014 * 10 * 2-3) / 5) = 2 is obtained. do.

Further, the tone frequency can be determined through the following equation (2).

&Quot; (2) "

F _ton = {Modulo ((year * month * day + offset) / 200)} + 60

For example, when the date information is October 02, 2014, and the offset of the non-frequency is 4, {T modulo ((2014 * 10 * 2-3) / 200)} + 144Hz out of 260Hz.

Through this process, only the date information and the offset information are shared between the transmitting side and the receiving side, so that even if the shared information is exposed, the non-used frequency and the tone frequency can not be used.

The storage unit 160 may store date information for providing a voice call function, a call frequency according to the offset of the call frequency, and a tone frequency according to the offset of the call frequency. Of course, the information such as the date information, the offset of the non-frequency, and the offset of the tone frequency stored in the storage unit 160 may be changed by the user as needed.

4 is a diagram illustrating a transmission method for providing a voice call function according to an embodiment of the present invention.

As shown in FIG. 4, an apparatus for providing a voice call function according to the present invention (hereinafter referred to as voice call provision apparatus) can receive a voice signal from a user (S410).

Next, when the speech signal providing apparatus receives the speech signal, it is possible to confirm whether the speech speech function is set (S420).

Next, if the speech non-speech function is set, the speech speech providing apparatus multiplies the predetermined non-speech frequency by the speech signal (S430), and the multiplied speech signal is filtered through the filter to remove the noise ).

At this time, the non-normal frequency can be determined based on the offset information of the non-normal frequency and the preset date information.

Next, the speech signal providing apparatus may calculate the sum of the filtered speech signal and the predetermined tone frequency (S450).

At this time, the tone frequency can be determined based on the preset date information and offset information of the tone frequency.

Next, the speech signal providing apparatus modulates the voice signal summed as a result of the addition operation based on a predetermined modulation scheme, and transmits the modulated voice signal wirelessly (S460).

5 is a diagram illustrating a receiving method for providing a voice call function according to an embodiment of the present invention.

As shown in FIG. 5, an apparatus for providing a voice call function according to the present invention (hereinafter referred to as voice call provision apparatus) can receive a modulated voice signal wirelessly (S510).

Next, the speech signal providing apparatus can demodulate the modulated speech signal and extract the speech signal that is the result of the demodulation (S520).

Next, the speech signal providing apparatus may determine whether the tone frequency of the extracted speech signal is identical to the tone frequency of the reception waiting time (S530).

Next, if the speech speech providing apparatus matches the determined result, the speech speech signal may be filtered to remove the noise (S540).

Next, the speech signal providing apparatus multiplies the filtered speech signal by a preset non-inference frequency (S550), and the multiplied speech signal is filtered through a filter to extract a desired frequency (S560).

Next, the speech signal providing apparatus may output the extracted speech signal through the output means (S570).

It is to be understood that the present invention is not limited to these embodiments, and all of the elements constituting the embodiments of the present invention described above are described as being combined or operated together. That is, within the scope of the present invention, all of the components may be selectively coupled to one or more of them. In addition, although all of the components may be implemented as one independent hardware, some or all of the components may be selectively combined to perform a part or all of the functions in one or a plurality of hardware. As shown in FIG. In addition, such a computer program may be stored in a computer-readable medium such as a USB memory, a CD disk, a flash memory, etc., and read and executed by a computer to implement embodiments of the present invention. As the storage medium of the computer program, a magnetic recording medium, an optical recording medium, a carrier wave medium, or the like may be included.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or essential characteristics thereof. Therefore, the embodiments disclosed in the present invention are intended to illustrate rather than limit the scope of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.

110:
111: Switch
112: multiplier
113: filter
114: adder
115: Signal generator
120: modulator
130: Demodulator
140: Receiver
141: tone detector
142: first filter
143: Switch
144: multiplier
145: second filter
150:
160:

Claims

A transmitter for multiplying the input voice signal by a preset non-inversion frequency, adding a multiplication-calculated voice signal to a preset tone frequency, and generating a voice signal as a result of the addition;
A modulator for modulating the non-voice signal by a predetermined modulation scheme and transmitting the modulated voice signal; And
A control unit for determining the non-frequency and the tone frequency based on the date information preset by the user, offset information of the non-normal frequency, and offset information of the tone frequency;
The transmitter comprising:
A multiplier for multiplying the input speech signal by the predetermined non-inversion frequency;
A filter for filtering the multiplied speech signal to remove noise; And
An adder for adding the filtered tone signal and the predetermined tone frequency;
And an audio signal generating unit for generating a sound signal.

The method according to claim 1,
The non-
The selection value N is calculated by the equation N = Modulo ((year * month * day-offset) / 5) and is determined as a non-conversion frequency corresponding to the calculated selection value N,
Wherein the offset is an offset of a predetermined frequency set by a user and is a natural number within a range of 1 to 10. The apparatus of claim 1,

The method according to claim 1,
The tone frequency,
Is determined by the formula {Modulo ((year * month * day + offset) / 200)} + 60,
Wherein the offset is an offset of a tone frequency preset by a user and is a natural number within a range of 1 to 10. The apparatus of claim 1,

delete

The method according to claim 1,
A second path connected to the input of the multiplier for switching to a first path for directly transmitting the input transmission signal to the multiplier depending on whether the voice signal is set or bypassing a received transmission signal to the adder, ;
Further comprising: means for generating an audio signal.

A generating step of multiplying the input voice signal by a preset non-inversion frequency, adding the multiplication-calculated voice signal to a preset tone frequency, and generating a voice signal as a result of the addition; And
A transmitting step of modulating the non-voice signal by a predetermined modulation scheme and transmitting the modulated voice signal;
Wherein the non-operating frequency and the tone frequency are determined based on user-preset date information, offset information of the non-operating frequency, and offset information of the tone frequency,
Wherein the generating comprises:
Multiplying the voice signal input through the multiplier by the preset non-inverting frequency;
Filtering the multiplied speech signal through a filter to remove noise; And
Adding the filtered speech signal and the preset tone frequency through an adder;
The method comprising the steps of:

The method according to claim 6,
The non-
The selection value N is calculated by the equation N = Modulo ((year * month * day-offset) / 5) and is determined as a non-conversion frequency corresponding to the calculated selection value N,
Wherein the offset is an offset of a predetermined frequency set by a user and is a natural number within a range of 1 to 10. The method of claim 1,

The method according to claim 6,
The tone frequency,
Is determined by the formula {Modulo ((year * month * day + offset) / 200)} + 60,
Wherein the offset is an offset of a tone frequency preset by a user and is a natural number within a range of 1 to 10. The method of claim 1,

delete

The method according to claim 6,
A switch connected to an input terminal of the multiplier for switching to a first path for directly transmitting the input transmission signal to the multiplier depending on whether the voice ignition function is set or bypassing the inputted transmission signal to the adder, 2 path;
&Lt; / RTI > further comprising the step of: