KR20200013480A - Transmitting/receiving apparatus using wireless communications and voice signal processing system using the same - Google Patents

Abstract

Disclosed are a transmission/reception device using wireless communication and a voice signal processing system using the same. To solve the phenomenon that a voice overlapped or dropped out in a process of processing a voice signal received from the outside, the transmission/reception device and voice signal processing system may sequentially generate a plurality of tone signals corresponding to a preset frequency band according to a preset time, synchronize the sequentially generated tone signals and the voice signal, and restore the voice signal originally received from the outside from the voice signal synchronized with the tone signals including sequence information of the voice signal without voice duplication or voice dropout.

Description

Transmission / reception apparatus using wireless communication and voice signal processing system using them {TRANSMITTING / RECEIVING APPARATUS USING WIRELESS COMMUNICATIONS AND VOICE SIGNAL PROCESSING SYSTEM USING THE SAME}

The present invention relates to a transmission / reception apparatus using wireless communication and a voice signal processing system using them. More specifically, the present invention relates to a transmission / reception apparatus for selecting an optimal sound quality from a plurality of voice signals received using wireless communication, and a voice signal processing system using them.

In general, the system for monitoring the electric field is composed of a system for recording the voice of the tactical radio (receiver). This system is also applicable to security control systems that monitor and record the voice of analog radios received through multiple channels.

At this time, when recording the voice of the tactical radio, a plurality of tactical radios (receiving device) receives the same voice from the transmitting radio, and the plurality of tactical radios (receiving device) according to the radio wave environment and the base station location The system transmits the signal to the control center that monitors the battlefield situation, and the control center processes the received signal to select the optimal sound quality from the voices transmitted from the plurality of tactical radios.

Conventionally, a voice signal processing method selects an optimal voice using a voice selection algorithm (for example, Zero Cross Rate (ZCR)) for a voice input through a plurality of channels, but a voice selection algorithm currently applied. There is a problem that the start timing of the received voice is unknown. Therefore, in the case of using the conventional voice selection algorithm, voice signals received from a base station equipped with a plurality of tactical radios cannot be compared under the same time condition. Therefore, when the voice quality is selected / switched, voices overlap or drop out. The problem exists.

Accordingly, there is a need for a technology capable of restoring a voice signal received from the outside by preventing a voice from being duplicated or dropping out during sound quality selection / switching.

The present invention sequentially generates a plurality of tone signals in order to prevent the overlapping or dropping of the voice in the process of restoring the voice signal received from the outside, and sequentially received the plurality of tone signals and received from the outside The present invention provides a transmitting / receiving apparatus using wireless communication for processing a voice signal by synchronizing a voice signal and transmitting / receiving data including voice signal and sequence information of the voice signal, and a voice signal processing system using the same.

According to an aspect of the present invention, there is provided a transmission apparatus using wireless communication, including: a voice signal receiving unit configured to receive a voice signal from an external device; A tone signal generator for generating a plurality of tone signals corresponding to a preset frequency band; A signal synchronizer configured to synchronize the received voice signal with the generated plurality of tone signals; And a transmitter for transmitting a voice signal synchronized with the plurality of tone signals.

Preferably, the tone signal generator may sequentially generate the plurality of tone signals according to a predetermined time interval, and the signal synchronizer may synchronize the sequentially generated tone signals with the received voice signal. .

Preferably, the tone signal generator sequentially generates a first tone signal corresponding to a first to an Nth tone signal (N is a natural number equal to or greater than 1) corresponding to a preset N-th, and the signal synchronizer generates the received voice. The signal may be synchronized with the M th tone signal generated in the M th (1 ≦ M ≦ N, M is a natural number) of the sequentially generated tone signals corresponding to the time when the voice signal is received.

Preferably, the tone signal generator may repeat generating the N th tone signal and then generating the first tone signal from the first tone signal to the N th tone signal.

According to another aspect of the present invention, a receiving apparatus using wireless communication includes wireless communication of a voice signal synchronized with a plurality of tone signals corresponding to a preset frequency band generated by a transmitting apparatus. A receiving apparatus for receiving by using, comprising: a receiving unit for receiving a voice signal synchronized with the plurality of tone signals; A voice signal extracting unit configured to extract the voice signal from the voice signal synchronized with the plurality of tone signals received; And a tone signal detector configured to detect the plurality of tone signals from a voice signal synchronized with the received plurality of tone signals.

The voice signal converter may further include a voice signal converter configured to convert the extracted voice signal into data corresponding to a digital signal. The plurality of tone signals synchronized with the voice signal may be generated according to a preset time interval. Tone signals and the voice signal are synchronized to include sequence information of the voice information, and the tone signal detector detects a plurality of tone signals including sequence information of the voice signal, and detects the plurality of detected tone signals. The data corresponding to the digital signal can be converted.

Preferably, the apparatus may further include a data synthesizer for synthesizing a plurality of tone signals including the voice signal converted into the data and the sequence information of the voice signal.

Preferably, the plurality of tone signals are sequentially generated from a first tone signal corresponding to a first to an Nth tone signal corresponding to a preset Nth (N is a natural number of 1 or more) according to a preset time interval. The voice signals, which are tone signals and are synchronized with the plurality of tone signals, correspond to an Mth tone signal (1 ≦ M ≦ N, where M is a natural number) generated at a time corresponding to the time when the voice signal is received by the transmitting apparatus. It may be a synchronized voice signal.

According to another aspect of the present invention, a voice signal processing system generates a plurality of tone signals corresponding to a preset frequency band, and receives the generated plurality of tone signals and an external signal. A transmitting device for synchronizing a voice signal and transmitting a voice signal synchronized with the plurality of tone signals to a plurality of receiving devices; Receiving a voice signal synchronized with the plurality of tone signals from the transmitting device, extracting the voice signal from the voice signal synchronized with the plurality of tone signals, and receiving the received plurality of tone signals; A plurality of receivers for detecting the plurality of tone signals from the synchronized voice signal and transmitting the extracted voice signal and the detected plurality of tone signals to a voice signal processing apparatus, respectively; And a voice signal processing device for recovering the voice signal by combining the extracted voice signal received from the plurality of receiving devices and the detected plurality of tone signals, respectively.

Preferably, the plurality of tone signals include order information generated at a predetermined time interval, and the plurality of receiving devices convert the extracted voice signal into data corresponding to a digital signal, and the order of the voice signal. Converting the detected plurality of tone signals including information into data corresponding to a digital signal, synthesizing the plurality of tone signals including the voice signal converted into the data and sequence information of the voice signal, and synthesizing the synthesized data Each may be transmitted to the voice signal processing device.

Preferably, the voice signal processing device includes a data receiving unit for receiving the synthesized data transmitted from each of the plurality of receiving devices; A data converter for converting each of the received synthesized data into a plurality of tone signals including the voice signal and order information of the voice signal; And a voice signal processor configured to restore the voice signal by combining the voice signal converted from the received plurality of synthesized data and a plurality of tone signals including sequence information of the voice signal.

Preferably, each of the plurality of receiving devices converts the extracted voice signal and the detected plurality of tone signals into an optical signal and transmits the optical signal to the voice signal processing apparatus through an optical cable, and the voice signal processing apparatus is the optical cable. Receives an optical signal transmitted from the plurality of receiving devices through the signal, converts the received optical signal into the extracted voice signal and the detected plurality of tone signals, and the converted voice signal and a plurality of tones The signals may be combined to recover the voice signal.

Preferably, the plurality of tone signals are tone signals sequentially generated from a first tone signal corresponding to a first to an Nth tone signal (N is a natural number equal to or greater than 1) corresponding to a first N-th at a predetermined time interval. And a voice signal synchronized with the plurality of tone signals is synchronized with the M th tone signal (1 ≦ M ≦ N, where M is a natural number) generated at a time corresponding to the time at which the voice signal is received at the transmitter. It may be a voice signal.

According to an embodiment of the present invention, even in an analog modulation / demodulation type radio, the voice signal and the sequence information of the voice signal may be received together, and thus, when the voice signal is processed to restore the voice signal received through a plurality of channels, Errors such as dropped signals or duplicated voice signals can be improved. Therefore, the function of processing the voice can be improved to restore and record the optimum voice.

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

1 is a block diagram schematically showing the configuration of a voice signal processing system according to an embodiment of the present invention.
2A is a block diagram schematically illustrating a configuration of a transmission apparatus using wireless communication according to an embodiment of the present invention.
2B illustrates a frequency table of a plurality of tone signals according to an embodiment of the present invention.
2C is a diagram illustrating a method of synchronizing a voice signal and a plurality of tone signals according to an embodiment of the present invention.
3 is a block diagram schematically illustrating a configuration of a receiving apparatus using wireless communication according to an embodiment of the present invention.
4 is a diagram illustrating a method of extracting a voice signal from a signal in which a tone signal and a voice signal are synchronized according to an embodiment of the present invention.
5 illustrates an internal structure of the tone signal detector according to an embodiment of the present invention.
6A is a block diagram schematically illustrating a configuration of an audio signal processing apparatus according to an embodiment of the present invention.
6B is a diagram illustrating a voice signal processing method according to an embodiment of the present invention.
7 is a flowchart illustrating a method for transmitting a signal using wireless communication according to an embodiment of the present invention.
8 is a flowchart illustrating a method for receiving a signal using wireless communication according to another embodiment of the present invention.
9 is a flowchart illustrating a voice signal processing method according to an embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings will be described an embodiment of the present invention; Advantages and features of the present invention, and methods for achieving them will be apparent with reference to the embodiments described below in detail in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but can be implemented in various forms, and only the embodiments are intended to complete the disclosure of the present invention, and the general knowledge in the art to which the present invention pertains. It is provided to fully convey the scope of the invention to those skilled in the art, and the present invention is defined only by the scope of the claims. Like reference numerals refer to like elements throughout.

Unless otherwise defined, all terms used in the present specification (including technical and scientific terms) may be used in a sense that can be commonly understood by those skilled in the art. In addition, terms that are defined in a commonly used dictionary are not ideally or excessively interpreted unless they are specifically defined clearly.

In this specification, terms such as “first” and “second” are used to distinguish one component from another component, and the scope of rights should not be limited by these terms. For example, the first component may be referred to as a second component, and similarly, the second component may also be referred to as a first component.

In the present specification, for each step, an identification code (for example, a, b, c, etc.) is used for convenience of description, and the identification code does not describe the order of the steps, and each step is obvious in the context. Unless stated in a particular order, it may occur differently from the stated order. That is, each step may occur in the same order as specified, may be performed substantially simultaneously, or may be performed in the reverse order.

In this specification, expressions such as “having”, “may have”, “comprises” or “may contain” refer to the presence of such features (eg, numerical, functional, operational, or component such as components). It does not exclude the presence of additional features.

In addition, the term '~ part' described herein refers to software or a hardware component such as a field-programmable gate array (FPGA) or an ASIC, and '~ part' performs certain roles. However, '~' is not meant to be limited to software or hardware. May be configured to reside in an addressable storage medium or may be configured to play one or more processors. Thus, as an example, '~' means components such as software components, object-oriented software components, class components, and task components, and processes, functions, properties, procedures, and the like. , Subroutines, segments of program code, drivers, firmware, microcode, circuits, data structures, and variables. Functions provided within components and 'parts' may be combined into a smaller number of components and 'parts' or further separated into additional components and 'parts'.

Hereinafter, a configuration of a transmission / reception apparatus using a wireless communication and a voice signal processing system using the same according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings. The voice signal processing system according to an exemplary embodiment of the present invention is a system for processing a voice signal using communication for transmitting and receiving data wirelessly between terminal devices for data transmission of a Battle Management System (BMS) in various battle systems.

1 is a block diagram schematically showing the configuration of a voice signal processing system according to an embodiment of the present invention.

Referring to FIG. 1, a voice signal processing system 10 according to an exemplary embodiment includes a transmitter 100, a plurality of receivers 201, 202, and 203, and a voice signal processor 300. can do.

The transmitter 100 according to an exemplary embodiment generates a plurality of tone signals corresponding to a preset frequency band, synchronizes the generated plurality of tone signals with a voice signal received from the outside, and transmits the plurality of tone signals. The voice signal synchronized with the voice signals may be transmitted to the plurality of receiving devices 201, 202, and 203. The transmission apparatus 100 according to an embodiment of the present invention will be described in detail with reference to FIGS. 2A to 2C.

The transmission apparatus according to an embodiment of the present invention may be a radio or a vehicle equipped with a radio capable of transmitting an analog signal using wireless communication, but is not limited thereto. It can be any device that can transmit.

The plurality of receiving apparatuses 201, 202, and 203 according to an embodiment of the present invention each receive a voice signal synchronized with a plurality of tone signals from a transmitter, and the voice synchronized with the received plurality of tone signals. The voice signal may be extracted from the signal and the plurality of tone signals may be detected, and the extracted voice signal and the detected plurality of tone signals may be transmitted to the voice signal processing apparatus 300, respectively. The plurality of receiving apparatuses 201, 202, and 203 according to an embodiment of the present invention will be described in detail with reference to FIGS. 3 to 5.

The receiving device according to an embodiment of the present invention may be a base station equipped with a device capable of receiving a signal from the transmitting device by using a radio or a radio receiving from the transmitting device, but is not limited thereto.

The speech signal processing apparatus 300 according to an embodiment of the present invention may restore the speech signal by combining the extracted speech signal and the plurality of detected tone signals respectively transmitted from the plurality of receiving apparatuses. An audio signal processing apparatus 300 according to an embodiment of the present invention will be described in detail with reference to FIGS. 6A to 6B.

2A is a block diagram schematically illustrating a configuration of a transmitting apparatus according to an embodiment of the present invention.

Referring to FIG. 2A, a transmission apparatus 100 using wireless communication according to an exemplary embodiment of the present invention may include a voice signal receiver 120, a tone signal generator 110, a signal synchronizer 130, and a modulator 140. ) And a transmitter 150.

The voice signal receiver 120 according to an embodiment of the present invention may receive a voice signal from the outside, and the tone signal generator 110 may generate a plurality of tone signals corresponding to a preset frequency band.

A plurality of tone signals according to an embodiment of the present invention are signals corresponding to a preset frequency band to prevent hybridization when the radio frequencies are the same, and the preset frequency band according to an embodiment of the present invention is preferably an audible sound. The band may be 67 Hz to 250 Hz, but is not limited thereto. A detailed method of generating the tone signal will be described with reference to FIG. 2B.

In this specification, the audible sound band represents a general human voice band of about 300 Hz to 4 kHz.

2B illustrates a frequency table of a plurality of tone signals according to an embodiment of the present invention.

Referring to FIG. 2B, each of the plurality of tone signals according to an embodiment of the present invention may be a signal corresponding to a different frequency (unit: Hz) 110a, and the frequency table of the plurality of tone signals corresponds to each tone. The identification data for identifying the number of the signal and the tone signal having the corresponding frequency band may be indicated. For example, the 223rd tone signal is a signal corresponding to a frequency of 146.2 Hz and may represent identification data of 0DF. The 224th tone signal 100b corresponding to the 223nd tone signal and the 225th tone signal is deleted from the frequency table of the plurality of tone signals corresponding to the frequency band already used. The present invention is not limited thereto, but is not limited thereto. The frequencies shown in the frequency tables of the plurality of tone signals are also merely examples for describing an embodiment of the present invention.

Accordingly, by the above-described method, the plurality of tone signals may be signals corresponding to different preset frequencies.

Referring back to FIG. 2A, the tone signal generator 110 according to an embodiment of the present invention sequentially generates a plurality of tone signals corresponding to different preset frequencies by the above-described method at predetermined time intervals. can do.

In detail, the tone signal generator 110 may sequentially generate the first tone signal corresponding to the first to the Nth tone signal corresponding to the preset Nth (N is a natural number of 1 or more). In addition, the tone signal generator 110 according to another embodiment of the present invention may sequentially generate the N th tone signal corresponding to the N th and then generate the first tone signal to the N th tone signal again. In addition, when the Nth tone signal is generated again, the Nth tone signal is synchronized with the voice signal again from the first tone signal, and then repeatedly generated until the transmitter 150 transmits the voice signal synchronized with the plurality of tone signals. Can be.

According to an embodiment of the present disclosure, the transmitting device 100 may be implemented as a radio, and when implemented as a radio, the PTT corresponding to the transmission button for transmitting from the radio may be turned on. According to an embodiment of the present invention, when the PTT is turned on, the tone signal generator 110 generates the first tone signal and waits for a preset time t. Preferably, the above-described preset time t may be 500 ms, but is not limited thereto. After waiting for a preset time t, the first tone signal is generated to generate a first tone signal, and the tone signal generator 110 generates a second tone signal to repeat the above-described process. While repeating the above-described process, the tone signal generator 110 generates the N-th (N is a natural number) tone signal, waits for a preset time t, and then ends the generation of the N-th tone signal to generate the N-th tone signal And generates an Nth value corresponding to a preset value.

As a result of determination, when the N th corresponds to a preset value, the tone signal generator 110 again generates the first tone signal corresponding to the first and repeats the above-described process until the N th tone signal is generated.

As a result of determination, when the N th does not correspond to a preset value, the tone signal generator 110 generates an N + 1 tone signal, and similarly determines whether N + 1 corresponds to a preset value and repeats the above-described process. do.

For example, when the preset value is 250, the tone signal generation unit 110 according to an embodiment of the present invention generates the 1 to 250 th tone signal, and after generating the 250 th tone signal, the first tone signal again. Repeat the process of generating while waiting for a predetermined time (t). However, the above-described example is only an example for describing an embodiment of the present invention and is not limited thereto.

By the above-described method, the tone signal generation unit 110 according to an embodiment of the present invention repeats the process of generating a plurality of tone signals, and the signal synchronization unit 130 generates the generated tone signals and the voice signal. When the PTT is turned off while the synchronization is performed, the tone signal generator 110 finishes generating the tone signal while the transmitter 150 transmits a voice signal synchronized with the generated tone signals.

The signal synchronizer 130 according to an exemplary embodiment may synchronize the voice signal received by the voice signal receiver 120 with a plurality of tone signals generated by the tone signal generator 110. In detail, the signal synchronizer 130 may synchronize the plurality of tone signals sequentially generated by the tone signal generator 110 and the voice signal received by the voice signal receiver, and the tone signal generator 110. In order to generate sequentially from the first tone signal corresponding to the first to the Nth tone signal corresponding to the N-th preset, the signal synchronizer 130 corresponds to the time at which the voice signal is received. It may be synchronized with the M th tone signal generated in the M th (1 ≦ M ≦ N, M is a natural number) among the plurality of tone signals sequentially generated. A method of synchronizing a plurality of tone signals and a voice signal will be described with reference to FIG. 2C.

2C is a diagram illustrating a method of synchronizing a voice signal and a plurality of tone signals according to an embodiment of the present invention.

Specifically, FIG. 2C illustrates a voice signal 131 synchronized with a plurality of tone signals according to an embodiment of the present invention.

Referring to FIG. 2C, the plurality of tone signals 111 and the voice signal 121 may be synchronized according to an embodiment of the present invention described above, and the plurality of tone signals 111 are previously described as described above. Can be generated while waiting for a set time (t). The preset time t according to an embodiment of the present invention may be 500 ms, but is not limited thereto.

The plurality of tone signals 111 may be generated up to an N-th tone signal corresponding to the N-th number corresponding to a preset number. When the N-th tone signal is generated, the sequence information again corresponds to the first to N th signals. N tone signals can be generated in order.

In detail, in FIG. 2C, when the value of N corresponds to 250, the tone signal generator 110 generates the tone signals from the first to the 250th order in order to generate 250 tone signals corresponding to the first set 131a. After generating the 250 tone signals corresponding to the first set 131a, the display may return to the beginning and repeatedly generate the 250 tone signals corresponding to the second set 131b. According to an embodiment of the present invention, when the preset time t is 500 ms, the tone signal generator 110 may generate 250 tone signals for a total of 125 s. However, the above-described example is only an example for describing an embodiment of the present invention and is not limited thereto.

The signal synchronizer 130 indicates that the third tone signal included in the first set 131a and the 'ga' corresponding to the voice signal are synchronized with each other in FIG. 2c, and thus the voice signal 'ga' is the first set 131a. ) And may include order information corresponding to the third order. In contrast, the voice signal corresponding to the third tone signal included in the second set 131b is 'four', and the signal synchronization unit 130 corresponds to the third tone signal and the voice signal included in the second set 131b. The voice signal 'sa' corresponds to the second set 131b and may include sequence information corresponding to the third order. However, as described above, the voice signal corresponding to the first set 131a and including the sequence information corresponding to the third order and the voice including the sequence information corresponding to the third order and corresponding to the second set 131b are included. Although the signals illustrate different things, the above-described examples are merely examples for describing an embodiment of the present invention and are not limited thereto. The same voice signals may be used.

Similarly, the voice signal synchronized with the fifth tone signal included in the first set 131a may be 'I', and the voice signal synchronized with the fifth tone signal included with the second set 131b may be 'A'. have. By the above-described method, the signal synchronization unit 130 may synchronize the voice signal 121 with the plurality of tone signals 111.

Referring back to FIG. 2A, the modulator 140 according to an embodiment of the present invention uses a wireless communication to generate a voice signal synchronized with a plurality of tone signals including sequence information of a voice signal by the above-described method. Modulation may be performed based on a modulation scheme preset to transmit.

According to an embodiment of the present invention, the transmitter 150 uses a wireless communication method for a voice signal synchronized with a plurality of tone signals including sequence information of a voice signal modulated based on a modulation scheme preset by the above-described method. Can be transmitted to each of the plurality of receiving apparatuses 200.

In addition, the transmitter 150 according to another embodiment of the present invention transmits a voice signal synchronized with the plurality of tone signals generated by the signal synchronizer 130 to the plurality of receivers 201, 202, and 203, respectively. I can send it.

Accordingly, the transmitting apparatus 100 according to an embodiment of the present invention may be modulated based on a voice signal synchronized with a plurality of tone signals including sequence information of a voice signal generated by the above-described method or a preset modulation scheme. A voice signal synchronized with the plurality of tone signals may be transmitted to the plurality of receiving apparatuses 201, 202, and 203, respectively. The reception device 200 described above will be described in detail with reference to FIG. 3.

3 is a block diagram schematically illustrating a configuration of a receiving apparatus using wireless communication according to an embodiment of the present invention.

Referring to FIG. 3, the receiving apparatus 200 using wireless communication according to an exemplary embodiment of the present invention includes a receiver 210, a voice signal extractor 220, a voice signal converter 230, and a tone signal detector 240. ), A data synthesizer 250, and a data transmitter 260.

The receiver 210 according to an exemplary embodiment of the present invention may receive a signal in which a plurality of tone signals and a voice signal that are sequentially generated are transmitted from the transmitter 100 described with reference to FIG. 2.

The plurality of tone signals described above according to an embodiment of the present invention range from a first tone signal corresponding to a first to an Nth tone signal corresponding to a preset Nth (N is a natural number of 1 or more) according to a preset time interval. The voice signal synchronized with the plurality of tone signals may be a plurality of tone signals sequentially generated, and the M-th tone generated at a time corresponding to the time when the voice signal is received by the transmitting apparatus 100 described with reference to FIG. 2. It may be a voice signal synchronized with a signal 1 ≦ M ≦ N, where M is a natural number.

The receiving device 200 according to another embodiment of the present invention may further include a demodulator (not shown), and a plurality of tone signals and voice signals sequentially generated from the transmitting device 100 may be included. When the synchronized signal is modulated, the modulated synchronized signal may be demodulated based on a preset demodulation scheme.

According to an embodiment of the present invention, the voice signal extractor 220 may extract only a voice signal from a plurality of sequentially generated tone signals received from the receiver 210 and a signal in which the voice signal is synchronized.

The voice signal extractor 220 according to an embodiment of the present invention may be configured as a filter. Preferably, the voice signal extractor 220 according to an embodiment of the present invention may include a cutoff frequency among frequency components of an input signal. It can be implemented as a high pass filter (HPF) that passes only the frequency components higher than the cut-off frequency, and cuts the lower frequency components. Preferably, the cutoff frequency of the high pass filter according to an embodiment of the present invention may be 500 Hz as a boundary frequency that distinguishes a passband and a stopband, but the above-described example is an example for describing an embodiment of the present invention. It is not limited thereto.

Referring to FIG. 4, FIG. 4A illustrates a signal in which a tone signal 240a and a voice signal 220a are synchronized. The voice included in the receiving device 200 according to an embodiment of the present invention. The signal extractor 220 may extract only the voice signal 220a from a signal in which the tone signal 240a and the voice signal 220a shown in FIG. 4A are synchronized. Specifically, since the frequency of the voice signal 220a in the synchronized signal according to an embodiment of the present invention corresponds to a higher frequency than the frequency of the tone signal 240a, the voice signal extracting unit is implemented as a high pass filter in the synchronized signal. Only the audio signal 220a may be extracted. Preferably, the cutoff frequency of the high pass filter according to an embodiment of the present invention may be 500 Hz. Therefore, FIG. 4B is a diagram illustrating only the voice signal 220a extracted by the voice signal extracting unit 220 described above.

Referring back to FIG. 3, the voice signal converter 230 according to an exemplary embodiment may convert the voice signal extracted by the above-described method into data corresponding to a digital signal. In the present specification, data represents information converted into a digital form by distinguishing it from an analog signal such as a voice signal.

The voice signal converter 230 according to an embodiment of the present invention uses a pulse code modulation (PCM) method to convert a voice signal corresponding to an analog signal extracted from the voice signal extractor into a digital signal. Can be converted to data. Specifically, the voice signal conversion unit 230 according to an embodiment of the present invention measures the amplitude of the amplitude of the voice signal extracted by the voice signal extraction unit 220 at a uniform period to sample a discrete signal, and sampled discrete. Quantize the amplitude of the measured amplitude by raising or discarding the signal, and converting the amplitude of the quantized amplitude into a binary code consisting of '0' and '1' to convert the speech signal into data corresponding to the digital signal. have. However, the above-described example is only an example for describing an embodiment of the present invention and is not limited thereto.

The tone signal detector 240 according to an exemplary embodiment may detect a plurality of tone signals from a plurality of sequentially generated tone signals received from the receiver 210 and a signal in which a voice signal is synchronized.

Tone signal detector 240 according to an embodiment of the present invention may detect a plurality of tone signals using a predetermined frequency band in the RF (Radio Frequency) in order to prevent crosstalk of the same radio frequency.

Referring to FIG. 5, FIG. 5 is a diagram illustrating an internal structure of the tone signal detector 241 according to an embodiment of the present invention. The tone signal detector 241 may change a tone detection filter value through external control. The tone signal can be detected within a preset frequency band. Preferably, the above-described preset frequency band may be 67 Hz to 250 Hz, but is not limited thereto.

Referring to FIG. 3 again, a plurality of tone signals synchronized with a voice signal according to an embodiment of the present invention synchronizes a plurality of tone signals generated at predetermined time intervals with a voice signal to provide order information of voice information. As such, the tone signal detector 240 may detect a plurality of tone signals including sequence information of the voice signal. In addition, the tone signal detector 240 according to another embodiment of the present invention may convert the plurality of detected tone signals into data corresponding to a digital signal, and in this case, information including order information of the voice signal may be The data may be converted into data corresponding to the digital signal.

Accordingly, the data synthesizing unit 250 according to an embodiment of the present invention includes the order information of the voice signal converted into data by the voice signal converter 230 and the voice signal converted into data by the tone signal detector 240. A plurality of tone signals may be synthesized.

The data transmitter 260 according to an exemplary embodiment may transmit the synthesized data synthesized by the above-described method to the voice signal processing apparatus.

According to another embodiment of the present invention, the receiving apparatus 200 includes an optical signal changing unit (not shown) for converting the extracted voice signal and the plurality of detected tone signals into an optical signal, and the changed optical signal into an optical cable. The apparatus may further include an optical signal transmitter (not shown) for transmitting to the voice signal processing apparatus. The optical cable according to an embodiment of the present invention may be connected to the receiving device 200 and a voice signal processing device to be described later. In addition, the optical signal changing unit included in the receiving apparatus 200 according to another embodiment of the present invention changes the data synthesized in the data synthesizing unit into an optical signal, and the optical signal changed by the optical signal transmitting unit through the optical cable It can transmit to a voice signal processing apparatus.

6A is a block diagram schematically illustrating a configuration of an audio signal processing apparatus according to an embodiment of the present invention.

Referring to FIG. 6A, the voice signal processing apparatus 300 according to an exemplary embodiment may include a data receiver 310, a data converter 320, and a voice signal processor 330.

The data receiver 310 according to an embodiment of the present invention may receive the synthetic data transmitted by the receiver described with reference to FIG. 3. Specifically, when described together with reference to FIGS. 1 and 2A, the transmitting apparatus generates a plurality of tone signals corresponding to a preset frequency band, synchronizes the generated plurality of tone signals with a voice signal received from the outside, A voice signal synchronized with the tone signals is transmitted to a plurality of receiving devices, and the plurality of receiving devices respectively receive a voice signal synchronized with the plurality of tone signals from the transmitting device, and synchronize with the plurality of received tone signals. The voice signal may be extracted from the extracted voice signal and the plurality of tone signals may be detected to transmit the extracted voice signal and the detected plurality of tone signals to the voice signal processing apparatus 300.

Specifically, the plurality of tone signals according to an embodiment of the present invention includes order information generated at a predetermined time interval, and the plurality of receiving devices convert the extracted voice signal into data corresponding to a digital signal, Converts the detected plurality of tone signals including the sequence information of the voice signal into data corresponding to the digital signal, synthesizes the voice signal converted into data and the plurality of tone signals including the sequence information of the voice signal, and synthesizes the synthesized data Each of them may be transmitted to the data receiver 310 included in the voice signal processing apparatus 300. The data receiver 310 according to an embodiment of the present invention may receive the synthesized data using a wired communication method, but is not limited thereto.

Each of a plurality of receiving apparatuses according to an embodiment of the present invention changes the extracted voice signal and the detected plurality of tone signals into optical signals, and transmits the changed optical signals to the voice signal processing apparatus 6 through an optical cable. Can be. Therefore, the voice signal processing apparatus 300 according to an exemplary embodiment of the present invention may include an optical receiver (not shown) capable of receiving an optical signal through an optical cable and converting the received optical signal into an electrical signal. can do.

The data converter 320 according to an exemplary embodiment may convert each of the synthesized data received by the data receiver 310 into a plurality of tone signals including voice signals and sequence information of the voice signals. .

The voice signal processor 330 according to an embodiment of the present invention combines a plurality of tone signals including order information of the voice signal and the voice signal converted from the plurality of synthesized data in the data converter 320, respectively. The audio signal can be restored. A method of processing a voice signal will be described with reference to FIG. 6B.

6B is a diagram illustrating a voice signal processing method according to an embodiment of the present invention.

Referring to FIG. 6B, a plurality of tone signals 111 according to an embodiment of the present invention may be configured to correspond to a 250 th preset signal from a first tone signal corresponding to a first one according to a preset time interval t. Up to 250 tone signals may be sequentially generated tone signals, and the first tone signal to the 250 th tone signal are included in the first set, and after the 250 th tone signal included in the first set is generated, the first tone signal starts again. It can be generated and represented as a second set.

In addition, in FIG. 6B, the data converter 320 converts the synthesized data received from the first receiver and the first voice signal 201a and the data synchronized with a plurality of tone signals including sequence information of the converted voice signal. The conversion unit 320 may confirm that the second voice signal 202a synchronized with the plurality of tone signals including sequence information of the converted voice signal by converting the composite data received from the second receiving device are different from each other. . In FIG. 6B, a part of the first voice signal 201a synchronized with the plurality of tone signals is missing and not restored, and a part of the second voice signal 202a synchronized with the plurality of tone signals is missing. The missing part is shown. The voice signal processor 330 according to an exemplary embodiment of the present invention may include a first voice signal 201a synchronized with a plurality of missing tone signals and a second voice synchronized with a plurality of missing tone signals. By combining the signals 202a, the transmitting apparatus may restore the voice signal 121 received from the outside.

Specifically, although a part of the first voice signal 201a synchronized with the plurality of tone signals is missing, the remaining voice signals of the first voice signal 201a synchronized with the plurality of not missing tone signals are sequentially The voice signals are synchronized with a plurality of generated tone signals and include sequence information. Similarly, the remaining voice signals of the second voice signal 202a synchronized with a plurality of not-missed tone signals are sequentially generated. As the voice signals synchronized with the tone signals and including the sequence information, the voice signal processor 330 combines the missing voice signals and the sequence information based on the sequence information of the voice signals and receives the voice signal 121 received from the outside. ) Can be restored.

Therefore, the voice signal processing system using the transmitter, the receiver and the voice signal processing apparatus according to the above-described embodiment of the present invention restores the voice signal received by the transmitter without an overlapping voice or dropping of the voice. can do. Therefore, when processing a voice signal according to an embodiment of the present invention it is possible to prevent the overlapping or dropping of the voice when the sound quality selection or sound quality switching, and to select the optimal voice.

7 is a flowchart illustrating a method for transmitting a signal using wireless communication according to an embodiment of the present invention.

Referring to FIG. 7, a reception apparatus using wireless communication according to an embodiment of the present invention may include a tone signal generator, a voice signal receiver, a signal synchronizer, and a transmitter.

The tone signal generator generates a plurality of tone signals corresponding to a preset frequency band (S710). The preset frequency band according to an embodiment of the present invention may preferably be 67 Hz to 250 Hz, but is not limited thereto.

The tone signal generation unit according to an embodiment of the present invention may sequentially generate a plurality of tone signals corresponding to a preset frequency band according to a preset time interval, and in detail, the first tone signal corresponding to the first The N th tone signal (N is a natural number of 1 or more) corresponding to the set N th may be sequentially generated. In addition, the tone signal generation unit according to another embodiment of the present invention may sequentially generate the N th tone signal corresponding to the N th and then generate the first tone signal to the N th tone signal again. When the N tone signal is generated, the first tone signal and the N th tone signal may be repeatedly generated until the N tone signal is synchronized with the voice signal and transmitted. Since the above-described method for generating the plurality of tone signals has been described above with reference to FIGS. 2A to 2C, a detailed description thereof will be omitted.

The voice signal receiver receives a voice signal from the outside (S720), and the signal synchronizer synchronizes the received voice signal with a plurality of generated tone signals (S730). The signal synchronizer according to an embodiment of the present invention may synchronize a plurality of tone signals sequentially generated by the tone signal generator and a voice signal received by the voice signal receiver, and correspond to the first one in the tone signal generator. When sequentially generating the first tone signal to the Nth tone signal corresponding to the preset Nth signal, the signal synchronizer M of the plurality of sequentially generated tone signals corresponding to the time at which the voice signal is received. It can be synchronized with the M-th tone signal generated in the first (1≤M≤N, M is a natural number). Since a method of synchronizing a plurality of tone signals and a voice signal has been described above, a detailed description thereof will be omitted.

The transmitter transmits a voice signal synchronized with the plurality of tone signals generated by the signal synchronizer to each of the plurality of receivers (S7470).

The receiving apparatus according to another embodiment of the present invention may further include a modulator, and the modulator may perform wireless communication on a voice signal synchronized with a plurality of tone signals including sequence information of the voice signal by the above-described method. And modulate the voice signal synchronized with the plurality of tone signals including sequence information of the modulated voice signal modulated by the modulator using wireless communication. Can be transmitted to each of the two receiving devices.

8 is a flowchart illustrating a method for receiving a signal using wireless communication according to another embodiment of the present invention.

Referring to FIG. 8, a reception apparatus using wireless communication according to an embodiment of the present invention may include a receiver, a voice signal extractor, a voice signal converter, a tone signal detector, a data synthesizer, and a data transmitter.

The receiver receives a voice signal synchronized with a plurality of tone signals corresponding to a preset frequency band generated by the transmitter by using wireless communication (S810).

The plurality of tone signals described above according to an embodiment of the present invention range from a first tone signal corresponding to a first to an Nth tone signal corresponding to a preset Nth (N is a natural number of 1 or more) according to a preset time interval. The voice signal synchronized with the plurality of tone signals may be a plurality of tone signals sequentially generated, and the M-th tone generated at a time corresponding to the time when the voice signal is received by the transmitting apparatus 100 described with reference to FIG. 2. It may be a voice signal synchronized with a signal 1 ≦ M ≦ N, where M is a natural number.

The voice signal extractor extracts a voice signal from the voice signal synchronized with the plurality of tone signals received by the receiver (S820). The voice signal extractor according to an embodiment of the present invention may be configured as a filter, and preferably, the voice signal extractor according to an embodiment of the present invention may be implemented as a high pass filter (HPF). Since a specific method of extracting a voice signal has been described above, a detailed description thereof will be omitted.

The voice signal converter according to an embodiment of the present invention may convert the voice signal extracted by the above-described method into data corresponding to a digital signal.

The tone signal detector detects a plurality of tone signals from a voice signal synchronized with the received plurality of tone signals (S830). In detail, the tone signal detector according to an exemplary embodiment may detect a plurality of tone signals including sequence information of a voice signal. In addition, the tone signal detector according to another embodiment of the present invention may convert the plurality of detected tone signals into data corresponding to the digital signal, in which case the information including the order information of the voice signal is added to the digital signal. It can be converted into the corresponding data.

According to an embodiment of the present invention, a data synthesizer may synthesize a plurality of tone signals including sequence information of a voice signal converted into data by a voice signal converter and a voice signal converted into data by a tone signal detector. The transmitter may transmit the synthesized synthesized data to the voice signal processing apparatus.

According to another aspect of the present invention, a receiving apparatus includes an optical signal changing unit for converting an extracted voice signal and a plurality of detected tone signals into an optical signal, and a signal for transmitting the changed optical signal to an audio signal processing apparatus through an optical cable. The apparatus may further include an optical signal transmitter. An optical cable according to an embodiment of the present invention may be connected to a receiving device and a voice signal processing device to be described later. In addition, the optical signal changing unit included in the receiving apparatus according to another embodiment of the present invention changes the data synthesized by the data synthesizing unit into an optical signal, and the optical signal processing unit changes the optical signal through the optical cable Can send to the device.

9 is a flowchart illustrating a voice signal processing method according to an embodiment of the present invention.

Referring to FIG. 9, a voice signal processing system according to an embodiment of the present invention may include a transmitter, a plurality of receivers, and a voice signal processor. The transmitter includes a tone signal generator, a voice signal receiver, And a signal synchronization unit and a transmitter, and each of the plurality of receivers may include a receiver, a voice signal extractor, a voice signal converter, a tone signal detector, a data synthesizer, and a data transmitter. The data receiver may include a data receiver, a data converter, and a voice signal processor.

The transmitting apparatus generates a plurality of tone signals corresponding to a preset frequency band, synchronizes the generated plurality of tone signals with a voice signal received from the outside, and receives the voice signals synchronized with the plurality of tone signals. To the network (S910). Detailed description of the above-described transmission method using wireless communication is omitted since it has been described above.

The plurality of receiving apparatuses respectively receive a voice signal synchronized with the plurality of tone signals from the transmitting apparatus, extract the voice signal from the received voice signal synchronized with the plurality of tone signals, and detect the plurality of tone signals. The voice signal and the detected plurality of tone signals are transmitted to the voice signal processing apparatus, respectively (S920). Since a detailed description of the reception method using the wireless communication has been described above, it will be omitted.

The speech signal processing apparatus restores the speech signal by combining the extracted speech signal received from the plurality of receiving apparatuses and the plurality of detected tone signals, respectively (S930).

Specifically, the plurality of tone signals according to an embodiment of the present invention includes order information generated at a predetermined time interval, and the plurality of receiving devices convert the extracted voice signal into data corresponding to a digital signal, Converts the detected plurality of tone signals including the sequence information of the voice signal into data corresponding to the digital signal, synthesizes the voice signal converted into data and the plurality of tone signals including the sequence information of the voice signal, and synthesizes the synthesized data Each of them may be transmitted to a data receiver included in the voice signal processing apparatus. The data receiver according to an embodiment of the present invention may receive the synthesized data using a wired communication method, but is not limited thereto.

The data converter according to an embodiment of the present invention may convert each of the synthesized data received by the data receiver into a plurality of tone signals including a voice signal and sequence information of the voice signal.

The plurality of tone signals described above may be tone signals sequentially generated from the first tone signal corresponding to the first to the Nth tone signal (N is a natural number equal to or greater than 1) corresponding to the first N-th signal according to a preset time interval. And a voice signal synchronized with a plurality of tone signals is a voice signal synchronized with the M th tone signal (1 ≦ M ≦ N, where M is a natural number) generated at a time corresponding to the time at which the voice signal is received by the transmitting apparatus. Can be.

The voice signal processor according to an exemplary embodiment may restore the voice signal by combining the voice signal converted from the plurality of synthesized data and the plurality of tone signals including sequence information of the voice signal, respectively, in the data converter. have. Since a specific method of restoring the voice signal has been described above, a detailed description thereof will be omitted.

Therefore, according to an embodiment of the present invention, the voice and the sequence information of the voice may be received together in an analog modulation / demodulation type radio, so that when the voice for the voice received through a plurality of channels is selected, the voice is dropped, Errors such as duplication of speech can be improved. Therefore, the function of selecting the voice transmitted from the radio can be improved.

Although all components constituting the embodiments of the present invention described above are described as being combined or operating in combination, the present invention is not necessarily limited to these embodiments. That is, within the scope of the present invention, all of the components may be selectively operated in combination with one or more. In addition, although all the components may be implemented as one independent hardware, each or some of the components are selectively combined to perform some or all functions combined in one or a plurality of hardware. It may be implemented as a computer program having a. In addition, such a computer program is stored in a computer readable medium such as a USB memory, a CD disk, a flash memory, and the like, and is read and executed by a computer, thereby implementing an embodiment of the present invention. The recording medium of the computer program may include a magnetic recording medium, an optical recording medium and the like.

The above description is merely illustrative of the technical idea of the present invention, and those skilled in the art to which the present invention pertains various modifications, changes, and substitutions without departing from the essential characteristics of the present invention. will be. Accordingly, the embodiments disclosed in the present invention and the accompanying drawings are not intended to limit the technical spirit of the present invention but to describe the present invention, and the scope of the technical idea of the present invention is not limited by the embodiments and the accompanying drawings. . The protection scope of the present invention should be interpreted by the following claims, and all technical ideas within the scope equivalent thereto shall be construed as being included in the scope of the present invention.

10: voice signal processing system
100: transmitting device
200: receiving device
300: voice signal processing device

Claims (13)

A voice signal receiver for receiving a voice signal from the outside;
A tone signal generator for generating a plurality of tone signals corresponding to a preset frequency band;
A signal synchronizer configured to synchronize the received voice signal with the generated plurality of tone signals; And
And a transmitter for transmitting a voice signal synchronized with the plurality of tone signals. The method of claim 1,
The tone signal generation unit sequentially generates the plurality of tone signals at predetermined time intervals,
And the signal synchronization unit synchronizes the plurality of sequentially generated tone signals and the received voice signal. The method of claim 2,
The tone signal generator sequentially generates the first tone signal corresponding to the first to the Nth tone signal (N is a natural number equal to or greater than 1) corresponding to the preset Nth.
The signal synchronizer may generate the M th tone generated in the M th (1 ≦ M ≦ N, M is a natural number) of the sequentially generated tone signals corresponding to the time at which the voice signal is received. A transmitter using wireless communication, characterized in that the synchronization with the signal. The method of claim 3,
And the tone signal generating unit repeats generating the first tone signal from the first tone signal again to the N th tone signal after generating the N th tone signal. A receiving apparatus for receiving a voice signal synchronized with a plurality of tone signals corresponding to a preset frequency band generated by a transmitting apparatus using wireless communication,
A receiver which receives a voice signal synchronized with the plurality of tone signals;
A voice signal extracting unit configured to extract the voice signal from the voice signal synchronized with the plurality of tone signals received; And
And a tone signal detector for detecting the plurality of tone signals from a voice signal synchronized with the plurality of received tone signals. The method of claim 5,
And a voice signal converter for converting the extracted voice signal into data corresponding to a digital signal.
The plurality of tone signals synchronized with the voice signal may include the sequence information of the voice information by synchronizing the voice signals with the plurality of tone signals generated at preset time intervals.
And the tone signal detector detects a plurality of tone signals including order information of the voice signal, and converts the detected plurality of tone signals into data corresponding to a digital signal. The method of claim 6,
And a data synthesizing unit for synthesizing a plurality of tone signals including the voice signal converted into the data and the sequence information of the voice signal. The method of claim 5,
The plurality of tone signals are a plurality of tone signals sequentially generated from a first tone signal corresponding to a first to an Nth tone signal (N is a natural number equal to or greater than 1) corresponding to a first N-th at a preset time interval. ,
The voice signal synchronized with the plurality of tone signals is a voice signal synchronized with an Mth tone signal (1 ≦ M ≦ N, where M is a natural number) generated at a time corresponding to a time at which the voice signal is received by the transmitter. A receiving device using wireless communication, characterized in that. A plurality of receiving apparatuses generate a plurality of tone signals corresponding to a preset frequency band, synchronize the generated plurality of tone signals with a voice signal received from the outside, and receive the voice signal synchronized with the plurality of tone signals. A transmission device for transmitting to the network;
Receiving a voice signal synchronized with the plurality of tone signals from the transmitting device, extracting the voice signal from the voice signal synchronized with the received plurality of tone signals, and receiving the received plurality of tone signals; A plurality of receivers for detecting the plurality of tone signals from the synchronized voice signal and transmitting the extracted voice signal and the detected plurality of tone signals to a voice signal processing apparatus, respectively; And
And a voice signal processing device for recovering the voice signal by combining the extracted voice signal received from the plurality of receiving devices and the detected plurality of tone signals, respectively. The method of claim 9,
The plurality of tone signals include order information generated according to a preset time interval,
The plurality of receiving devices,
A voice signal converted into the data by converting the extracted voice signal into data corresponding to a digital signal, converting the detected plurality of tone signals including sequence information of the voice signal into data corresponding to a digital signal, and And a plurality of tone signals including sequence information of a voice signal, and transmitting the synthesized data to the voice signal processing apparatus, respectively. The method of claim 10,
The voice signal processing device,
A data receiver configured to receive the synthesized data transmitted from the plurality of receivers, respectively;
A data converter for converting each of the received synthesized data into a plurality of tone signals including the voice signal and order information of the voice signal; And
And a voice signal processor for restoring the voice signal by combining the voice signal converted from the received plurality of synthesized data and a plurality of tone signals including sequence information of the voice signal. Signal processing system. The method of claim 9,
Each of the plurality of receiving apparatuses converts the extracted voice signal and the detected plurality of tone signals into an optical signal and transmits the optical signal to the voice signal processing apparatus through an optical cable.
The voice signal processing apparatus receives an optical signal transmitted from the plurality of receiving devices through the optical cable, converts the received optical signal into the extracted voice signal and the detected plurality of tone signals, and And reconstructing the voice signal by combining the converted voice signal and the plurality of tone signals. The method of claim 9,
The plurality of tone signals are tone signals sequentially generated from a first tone signal corresponding to a first to an Nth tone signal (N is a natural number equal to or greater than 1) corresponding to a first N-th signal according to a preset time interval.
The voice signal synchronized with the plurality of tone signals is synchronized with the M th tone signal (1 ≦ M ≦ N, where M is a natural number) generated at a time corresponding to the time when the voice signal is received by the transmitter. Voice signal processing system, characterized in that the signal.

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