KR200295602Y1 - The apparatus for alternating voice for a headset - Google Patents

Abstract

The present invention relates to a voice modulator for a headset, and attaches to a headset, and not only to modulate the voice during speech, but also to a device that allows the talker to directly check the modulated voice. To this end, the voice modulation device for a headset of the present invention is connected to a microphone for a voice modulation module for modulating the voice input from the microphone, connected to the voice modulation module modulation mode selection switch for selecting the voice modulation type of the voice modulation module On / off self-confirmed switch having a plurality of output terminals for transmitting modulated voice from the voice modulation module, connected to the voice modulation module, and a power supply for supplying driving power connected to the voice modulation module. Characterized in that it comprises a. Through the present invention, it is possible not only to output the modulated voice in various modes, but also to check the modulated voice and to use the voice modulator detachably.

Description

Voice Modulator for Headsets {THE APPARATUS FOR ALTERNATING VOICE FOR A HEADSET}

The present invention relates to a voice modulator for a headset, and more particularly, to a voice modulator for a headset that can be attached to a headset such as a hands-free headset to modulate the voice during speech and to directly check the modulated voice by the caller. It is about.

Voice modulation technology is to create a different sound by modifying the waveform of the original voice of the human voice, and is used for a variety of purposes, such as personal privacy protection. In particular, in the modern society, communication technologies are becoming more diverse and complicated due to the development of communication technologies that are being developed day by day, and various voice modulation technologies are appearing according to the demand of many people. Such voice modulation technology is used to modulate one's own voice into a voice of a specific entertainer or the like to modulate the voice to prevent invasion of privacy.

People's voice is produced by the interaction of the sound source with the transmission characteristics of the vocal track, which is related to the pitch, energy and tone, and the transmission characteristic of the vocalization is related to the tone and tone. The reason why the voice is different from person to person is that the transmission characteristics of the sound source and the saints are different from person to person, which results in each person having a unique frequency. Voice modulation is accomplished by converting these frequencies into digital signals.

Each human voice has a unique frequency, which is a complex mixture of waveforms, analog signals. Voice modulation technology is a technology that converts the waveform of such an analog signal into a digital signal. In voice modulation technology, a human voice is converted into a digital signal by encoding a human voice signal into digital data of a predetermined format. As a method of converting a digital signal, a computer filing method is widely used, which will be described below.

Comparing each person's voice to a computer file can find a uniform format of the waveform, or voice pattern. For example, there are waveforms that can be recognized in common among individual voice characteristics such as a voice of a husky voice, a voice of a high voice, and a voice of a short tongue. After extracting and sampling these common waveforms, we develop an algorithm that can turn them into artificial digital data. For example, in order to make a female voice into a male voice, it is achieved by developing an algorithm for reassembling the waveform of the female voice into a waveform that can be heard by the male voice. The pitch of the voice and the change in the speed of the voice also affect the voice modulation.

Such voice modulation technology exists in various forms as follows. First, there is a method using a band filter group, which directly increases or decreases a specific frequency band energy of a voice signal and has a disadvantage in that it is difficult to convert to a desired tone. Second, there is a method of changing the value by estimating the factors related to the sound source, for example, the pitch, the degree of silence, the energy, etc. In this case, if the feature of the original voice is extracted and applied to another voice, it is converted into the original voice. Same effect. Third, there is a method of estimating both the sound source and the vocal transmission characteristics, and mapping them to the sound source and the vocal transmission characteristics of the target tone. This is the method with the highest conversion success rate, but research is still underway as it is difficult to convert the timbre accurately.

As one of such voice modulation devices, Korean Utility Model Registration No. 20-0208111 describes a microphone-type earphone with a voice conversion function. In this case, the microphone combined earphone includes an amplifier for amplifying the electric signal converted by the microphone, a voice modulator for modulating the voice of the talker amplified by the amplifier into a male and female voice, and a voice modulated signal and a received signal. It is characterized in that it consists of a switch for amplifying and outputting to the earphone and at the same time it is input by the amplifier and microphone output to the transmission circuit of the mobile phone to convert the signal amplified in the amplifier to male or female voice.

However, in the case of a microphone earphone with a built-in voice conversion function, the voice modulation function must be included in the microphone, and thus, due to a structural problem, the voice modulation method can be simplified, and only the modulated voice can be heard while talking. There is a problem in that it cannot be confirmed beforehand how it is modulated. In addition, the modulated voice is continuously heard while talking, and there is a problem that the attention is distracted and the concentration falls because there is no means for blocking the listening.

In addition, in general broadcasting, a voice is modulated using a complex digital signal processing (DSP) method, but it is inconvenient to carry and is not composed of an independent voice modulation device. In addition, there is a method of modulating voice by recording a voice in advance and then reproducing the voice at different playback speeds in order to implement voice modulation.

The present invention is to solve the problems of the conventional device with a built-in voice conversion function, to provide a voice modulation device for a headset that has a variety of voice modulation mode, simple structure, convenient to carry and detachable to the headset do.

In addition, the present invention provides a voice modulator for a headset in which a voice self-verification means is provided in the headset voice modulator for not only confirming the modulated voice in advance but also directly selecting a modulated voice during a call. To provide.

1 is a view schematically showing the overall structure of a voice modulation device for a headset of the present invention.

2 is a view showing the operation principle of the voice modulation module of the voice modulation device for a headset of the present invention.

3 is a view showing the appearance of a modulation mode selection switch in the voice modulation device for a headset of the present invention.

4 is a diagram illustrating the use of the voice modulation device for a headset of the present invention connected to a portable telephone and a handsfree.

5 is a schematic diagram showing another embodiment of a voice modulation device for a headset of the present invention.

<Description of the symbols for the main parts of the drawings>

1. Earphone 2. Microphone

3. Voice Modulator 4. Voice I / O Media

31. Voice modulation module 32. Modulation mode selection switch

33. Self-check switch 34. Earphone drive amplifier

The present invention relates to a voice modulator for a headset, wherein the voice modulator for a headset of the present invention is connected to a microphone to modulate a voice input from a microphone, and is connected to a voice modulator module, and is connected to a voice modulator. Modulation mode selection switch for selecting the type, connected to the voice modulation module, ON / OFF type self-checking switch having a plurality of output terminals for transmitting the modulated voice from the voice modulation module, and connected to the voice modulation module And a power source for supplying driving power.

In addition, in the voice modulator for a headset of the present invention, the voice modulator module is an input signal amplifier for amplifying a voice analog signal input from a microphone and an A / D for digitally analyzing the amplified voice analog signal from an input signal amplifier according to a pulse. A reference function generator that generates a pulse to be used as a reference time for the converter, an A / D converter, a reference time function generator that provides a sampling rate to the A / D converter according to the pulses provided by the reference function generator, and a digitized signal SRAM to store, a latch to receive and temporarily hold a modulated digital signal stored in the SRAM, a controller to control the SRAM and the latch to modulate the temporarily stored digital signal according to a modulation mode, and a digital signal from the modulated latch. It includes a D / A converter for converting into an analog signal The.

In the headset voice modulator according to the present invention, when the self-check switch is ON, the earphone for receiving and amplifying the modulated voice from the voice modulation module through the first output terminal of the self-check switch and then transmitting the earphone to the earphone Characterized in that it further comprises a driving amplifier.

On the contrary, when the self-check switch is OFF in the headset voice modulator of the present invention, the voice modulated by the voice modulator module is transmitted to the voice input / output medium through the second output terminal of the self-check switch.

In addition, a voice modulator for a headset according to another embodiment of the present invention is connected to a microphone for modulating a voice input from a microphone, and a voice modulator for selecting a voice modulator of the voice modulator. Modulation mode selection switch, earphone driving amplifier for receiving and amplifying the modulated voice from the voice modulation module, self-checking switch for transmitting amplified modulation voice to the earphone connected to the earphone driving amplifier, and voice modulation It is connected to the module and the amplifier for driving the earphone, characterized in that it comprises a power supply for supplying driving power.

Hereinafter, an embodiment of the present invention will be described with reference to FIGS. 1 to 5.

1 is a view showing the overall configuration of the voice modulator for a headset of the present invention, showing the operating principle of the voice modulator for a headset of the present invention. As shown in FIG. 1, the headset voice modulator 3 of the present invention has a large voice modulation module 31, a modulation mode selection switch 32, a self-check switch 33, and an earphone driving amplifier 34. And a power source 35. The voice modulator 3 of the present invention is connected to the earphone 1, the microphone 2, and the voice input / output medium 4 and used to modulate the voice.

The earphone 1 and the microphone 2 may be configured not only as a headset but also as hands free, depending on the form thereof. The voice input / output medium 4 may be a portable telephone.

As shown in FIG. 1, when the talker inputs a voice through the microphone 2, the voice is modulated by the voice modulator 31. The voice modulation module 31 can not only modulate the voice in various stages by the modulation mode selection switch 32, but also directly transmit the voice of the talker without selecting the modulation mode.

The voice modulated by the voice modulation module 31 can be directly confirmed by the talker by using the switch 33 for self-check. As shown in Fig. 1, the self-check switch 33 includes a plurality of output terminals as ON / OFF type, and the modulated voice of the talker is returned to the earphone for confirmation or immediately inputted through the output terminal. You can send it to (4) and export it. For example, the self-check switch 33 may be manufactured in the form of a push button.

For example, when the talker presses the self-check switch 33, since the switch contact is turned on and the first output terminal 36 is selected, the modulated voice is amplified by the earphone driving amplifier 34. Then, it is delivered to the talker through the earphone (1). In this case, the modulated voice is not transmitted to the voice input / output medium 4, so that the called party cannot hear the modulated voice. Therefore, there is an advantage that can confirm the pre-modulated voice before the call with the receiver.

If the talker does not press the self-check switch 33 of the voice modulator 3, the switch contact is turned off and the second output terminal 37 is selected, so that the voice modulator 31 is connected to the voice input / output medium 4. The modulated voice is transmitted. Therefore, the receiver who is connected to the voice input / output medium 4 hears the modulator's modulated voice. Since the voice modulation module 31 plays an important role in the present invention, the voice modulation module 31 of FIG. 1 will be described in more detail below.

2 is an enlarged view of the internal structure of the voice modulation module 31 in the voice modulation device of the present invention, and shows the operation principle of the voice modulation module 31 of the present invention in detail.

As shown in FIG. 2, the voice modulation module 31 of the present invention includes an input signal amplifier 311, an analog / digital converter (312), a static random access memory (SRAM) 313, and a reference. A function generator 314, a reference time function generator 315, a latch 316, a controller 317, and a digital / analog converter 318 are included.

First, voice is input from the microphone 2 to the input signal amplifier 311 of the voice modulation module 31. The voice input as described above is an analog signal and is amplified by the input signal amplifier 311 and then converted into a digital signal by the A / D converter 312. The A / D converter 312 converts the voice analog signal into a digital signal according to the number of clocks from the reference time function generator 315.

The reference function generator 314 plays a role of regularly generating a pulse to be used as a reference time, and the reference time function generator 315 enters the A / D converter 312 and the controller 317 so as to enter a sampling rate. Create Therefore, the reference time function generator 315 generates a pulse once for each predetermined number of pulses of the reference function generator 314, and analyzes the input voice signal based on the reference time generator 315.

In this way, the voice converted into the digital signal using the reference function generator 314 and the reference time function generator 315 is stored in the SRAM 313 under the control of the control unit 317 according to the selection of the modulation mode. Next, the latch 316 temporarily maintains the digital signal state at a specific time, and then digitalizes the digital signal again by the D / A converter 318 and outputs the modulated voice to the self-check switch 33 side. do.

The voice modulation process by the controller 317 will be described in more detail. The controller 317 controls the voice to modulate the voice by receiving the voice modulation mode desired by the talker according to the modulation mode of the modulation mode selection switch 32. According to the present invention, the modulated voice is generated by modulating the frequency of the beat cycle of the input voice signal according to the voice modulation mode and replaying the amplitude of the original voice signal.

In general, speech is composed of regularly repeated beat cycles, amplitude of speech signal, and correlation constants of unit signals. In the present invention, the modulated voice modulates the frequency of repeated beat cycles of the input voice faster or slower, thereby modulating the voice signal corresponding to the frequency with respect to the input frequency. The voice modulation mode can be set to make the frequency slower or faster so that the input voice signal can be made low or high voice. In addition, since there is a mode that does not change the frequency among the voice modulation mode, the input voice may be output as it is without being modulated. Through the configuration of the voice modulator of the present invention, the sender can hardly recognize the time delay effect due to the modulation. In addition, voice modulation is possible in real time, and voice modulation of various tones is possible according to the modulation degree of frequency.

Figure 3 is a schematic perspective view showing the appearance of the voice modulation device of the present invention is shown with two modulation mode selection switches (321, 322), self-check switch 33 and the connection jack on the outside.

As shown in Figure 3, the modulation mode selection switch of the present invention can be divided into two parts. The upper switch is the ON / OFF switch 321, and three types of OFF, A, and B types can be selected, and the lower switch is the mode selection switch 322, and four selections of 1, 2, 3, and 4 are available. This is possible. This switch mode is merely to illustrate the present invention, but the present invention is not limited thereto.

Hereinafter will be described by illustrating a switch mode of the present invention. In the present invention, three or four types of software can be used to enable various selections in voice modulation. In the ON / OFF switch 321, both A and B types are in an ON state. In this case, the voice of the talker is modulated and output to the outside. When the switch is in the OFF state, the voice modulator does not operate, so the voice of the talker is transmitted to the talker without being modulated.

The memory used in the voice modulation module of the voice modulation device of the present invention includes its own software, and various modulation modes may be set according to the operation of the switch. As described above, the modulation method is performed by modulating the frequency of the pulsation period of the input voice signal according to the voice modulation mode and replaying the amplitude of the original voice signal. In the voice modulation device of the present invention illustrated in FIG. 3, the voice modulation mode may be set in two types A and B through the ON / OFF switch 321, and the four voice modulation modes may be set in the mode selection switch 322. Since it can be selected, the total modulated mode can be 8 (2 × 4) branches in total.

For example, in the modulation mode selection switch in the voice modulation device of the present invention, the A and B types can modulate the voice of the talker into the male and female voices, respectively. The modulated voice is modulated again by the four types of mode selection switches 322 below. The four types of mode selection switch 322 can be configured with a modulation scheme to vary the tone. The number of modes and modulation schemes are merely illustrative of the present invention and the present invention is not limited thereto.

As described above, when the self-check switch 33 of the voice modulator 3 of the present invention is pressed, as shown in Fig. 1, the voice modulator 3 is not transmitted to the talker. The amplifier is amplified through the earphone driving amplifier 34 included therein and transferred to the earphone 1 so that the talker can hear the modulated voice. In addition, when the self-check switch 33 is not pressed, the switch contact is separated and the modulated voice is immediately transmitted to the voice input / output medium 4 and is delivered to the called party. Therefore, the talker can check in advance how the voice will be modulated by a simple ON / OFF method.

Hereinafter, an example in which the voice modulation device of the present invention is applied to a portable product will be described in detail through embodiments. The speech modulation device of the present invention can be manufactured in various forms and can be used for hands-free as in the following embodiments. The embodiments of the present invention described below are merely illustrated to explain the present invention, and the present invention is not limited thereto.

4 is a view illustrating a case in which the voice modulator of the present invention is connected to a hands-free device. As shown in Fig. 4, the voice modulation device of the present invention is connected to the upper part of the voice modulator 3 of the present invention by connecting a handsfree consisting of the earphone 1 and the microphone 2, and connecting the portable telephone 41 to the lower part. The device 3 can be used.

As shown in Fig. 4, in order to connect with a portable communication device such as a mobile phone 41, a jack for earphones of three terminals is used, and these three terminals use a ground and earphone which can be used as a reference voltage to generate a voice signal. It consists of an analog signal terminal for output, and three terminals connected to the analog signal for receiving the audio signal of the microphone. In the voice modulator for a headset of the present invention, since the jack for earphone using all three terminals is used, there is no problem to use the mobile phone in combination with the device of the present invention. In addition, as shown in Figure 4, the voice modulator 3 of the present invention can be used detachably in the existing hands-free, it is convenient for the user, and the structure is simple, there is an advantage of less trouble.

FIG. 5 shows a schematic overall view of a voice modulator having a different internal structure from the voice modulator described above. Unlike the voice modulator described above, the voice modulator of FIG. 5 enables the caller to directly listen to the modulated voice while talking to the called party with the modulated voice. However, the voice modulation module uses the same one as described above.

As shown in FIG. 5, the voice modulator according to another embodiment of the present invention includes a voice modulator module 31, a modulation mode selection switch 32, a self-check switch 33, and an earphone driving amplifier 34. And it consists of a power source. In FIG. 5, when the voice modulated by the voice modulation module 31 is amplified through the earphone driving amplifier 34 and then the self-check switch 33 is turned on, the amplified modulated voice is transferred to the earphone 1. Because it is transmitted, the talker can hear his or her modulated voice directly during the call. In addition, when the talker does not want to hear his / her modulated voice, the self-confirmed switch 33 may be turned off to hear his / her modulated voice. In another embodiment of the present invention, the self-verification switch 33 can be used to selectively listen to the modulator's modulated voice. As the self-verification switch 33, it is preferable to use a toggle switch.

As described above, not only the voice modulated in various modes can be output through the voice modulator of the present invention, but also there is an advantage in that it can be used detachably. In addition, the voice modulator of the present invention has a simple structure and can be miniaturized so that it is easy to carry, and can output the modulated voice in real time, and can be confirmed in advance through simple switch operation before exporting the modulated voice. You can prevent things from happening to you. It is also possible to selectively listen to its modulated voice during a call through a simple switch operation.

By using the function of the voice modulation device of the present invention can not only be used for entertainment purposes, but also can protect the privacy of the individual through voice modulation, there is an advantage that can block the prank calls from the outside.

Although the present invention has been described above, it will be readily understood by those skilled in the art that various modifications and variations are possible without departing from the concept and scope of the utility model registration claims described below. will be.

Claims (5)

A voice modulator for a headset for modulating voice, A voice modulation module connected to a microphone to modulate the voice input from the microphone; A modulation mode selection switch connected to the voice modulation module for selecting a voice modulation type of the voice modulation module An ON / OFF type self-confirmation switch connected to the voice modulation module and having a plurality of output terminals for transmitting modulated voice from the voice modulation module; A power supply connected to the voice modulation module for supplying driving power Voice modulation device for a headset comprising a. In claim 1, The voice modulation module, An input signal amplifier for amplifying a voice analog signal input from the microphone, An analog / digital converter (A / D converter) for digitally analyzing the audio analog signal amplified from the input signal amplifier according to a pulse; A reference function generator for generating a pulse to use as a reference time for providing to the A / D converter, A reference time function generator for providing a sampling rate to the A / D converter according to a pulse provided by the reference function generator, Static random access memory (SRAM) for temporarily storing the digitized signal, A latch for receiving and temporarily holding a digital signal that is temporarily stored in the SRAM and modulated; A control unit for controlling the SRAM and the latch according to a modulation mode to modulate the temporarily stored digital signal; D / A converter (digital / analog converter) for converting the digital signal from the modulated latch into an audio analog signal Voice modulation device for a headset comprising a. The method of claim 1 or 2, When the self-check switch is ON, further comprising an earphone driving amplifier for receiving and amplifying the modulated voice from the voice modulation module through the first output terminal of the self-check switch, and then transmits to the earphone Voice modulation device for a headset, characterized in that. The method of claim 1 or 2, And the self-check switch is OFF, transmitting the voice modulated by the voice modulation module to the voice input / output medium through the second output terminal of the self-check switch. A voice modulator for a headset for modulating voice, A voice modulation module connected to a microphone to modulate the voice input from the microphone; A modulation mode selection switch connected to the voice modulation module for selecting a voice modulation type of the voice modulation module Earphone driving amplifier for receiving and amplifying the modulated voice from the voice modulation module, A self-confirmed switch connected to the earphone driving amplifier for transmitting the amplified modulated voice to the earphone according to a selection; A power supply connected to the voice modulation module and the earphone driving amplifier to supply driving power; Voice modulation device for a headset comprising a.