KR102158729B1 - Receiver for receiving voice signal from a plurality of microphone and delivering it to external device, and method for outputting voice signal using receiver - Google Patents

Abstract

According to the present invention, disclosed is a method for a receiver to receive voice signals from a plurality of microphones and transmit the signals to an external device. More particularly, the method comprises the steps of paring a receiver to each of a first microphone and a second microphone, receiving a first audio signal from the first microphone, receiving a second voice signal from the second microphone, synthesizing the first voice signal and the second voice signal, generating a third voice signal, and transmitting the third voice signal to the external device.

Description

A receiver that receives voice signals from a plurality of microphones and transmits them to an external device, and a method of outputting a voice signal using the receiver. VOICE SIGNAL USING RECEIVER}

The present invention relates to a receiver that receives voice signals from a plurality of microphones and transmits them to an external device, and a method of outputting a voice signal using the receiver, and more particularly, a receiver connected to a specific external device includes a plurality of microphones. The present invention relates to a method for transmitting a plurality of voice signals received from the external device to the specific external device and a structure of such a receiver.

With the development of Internet and wired/wireless communication technologies, personally created online contents through YouTube and SNS (Social Network Service) are increasingly increasing.

In addition, as individuals produce online content, video production technology is increasingly increasing, and individuals are directly producing videos that they want to upload to YouTube and SNS.

In this way, while individuals produced images individually, individuals purchased devices for image production individually and utilized image production equipment they purchased themselves. In addition, in this case, each individual had to individually purchase various equipment for video production, and it could be a costly burden for individuals to directly purchase such video equipment.

In particular, voice is an important part for video recording, and the transmission power of voice is an essential part for improving the overall quality of the video, and video content creators who produce video according to this need individually select microphones with excellent voice recording performance. It was often equipped with.

However, since wireless pin microphones for increasing usability are expensive or have poor portability, there is a limit to the efficient use of wireless pin microphones purchased by individuals.

In addition, for video recording, the receiver of the wireless pin microphone is connected to various external devices and transmits the voice transmitted from the microphone to the external device. It can synthesize and transmit the voice efficiently according to the type of the external device transmitting the voice. There is a situation in which a method is being demanded.

Korean Patent Registration No. 10-0333409 (Name: wireless microphone transceiver mute control device by microcomputer control, 2002.04.09.)

An object of the present invention is to provide a receiver that receives voice signals from a plurality of microphones and transmits them to an external device, and a method of outputting a voice signal using the receiver.

The technical problems to be achieved in the present invention are not limited to the technical problems mentioned above, and other technical problems that are not mentioned will be clearly understood by those of ordinary skill in the technical field to which the present invention belongs from the following description. I will be able to.

In a method for receiving a voice signal from a plurality of microphones by a receiver according to an embodiment of the present invention and transmitting the voice signal to an external device, a first voice signal is paired with each of a first microphone and a second microphone, and a first voice signal from the first microphone Receive, receive a second voice signal from the second microphone, synthesize the first voice signal and the second voice signal to generate a third voice signal, and transmit the third voice signal to the external device. Can be transmitted.

At this time, the pairing means that when the first button of the first microphone is pressed for more than a predetermined time and the first button of the receiver is pressed for more than the predetermined time, the first microphone and the receiver are paired. And, when the first button of the second microphone is pressed for more than a predetermined time, the second microphone and the receiver may be paired.

In addition, when the first button of the receiver is pressed for less than a predetermined time, the received volume of the receiver may decrease.

In addition, the external device may be one of a smart phone, a personal computer (PC), a notebook computer, an amplifier, and a digital single lens reflex (DSLR) camera.

Further, receiving a pairing request message from a third microphone, releasing a pairing connection with the first microphone, transmitting a response message for allowing pairing to the third microphone, and being paired with the third microphone Including, the first microphone may be paired with the receiver before the second microphone.

According to the present invention, it is possible to efficiently transmit and receive voice signals according to the type of external device to which a receiver is connected, and to synthesize voice signals efficiently.

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

1 is a diagram illustrating a voice recording system according to an embodiment of the present invention.
2 is a diagram illustrating an external configuration of a microphone and a receiver according to an embodiment of the present invention.
3 is a diagram illustrating a process in which a receiver according to an embodiment of the present invention receives a voice signal from a microphone.
4 to 5 are views for explaining the internal configuration of a microphone and a receiver according to an embodiment of the present invention.

In order to clarify the features and advantages of the problem solving means of the present invention, the present invention will be described in more detail with reference to specific embodiments of the present invention shown in the accompanying drawings.

However, in the following description and the accompanying drawings, detailed descriptions of known functions or configurations that may obscure the subject matter of the present invention will be omitted. In addition, it should be noted that the same components are indicated by the same reference numerals as possible throughout the drawings.

The terms or words used in the following description and drawings should not be construed as being limited to their usual or dictionary meanings, and the inventor may appropriately define the concept of terms for describing his or her invention in the best way. It should be interpreted as a meaning and concept consistent with the technical idea of the present invention based on the principle that there is. Therefore, the embodiments described in the present specification and the configurations shown in the drawings are only the most preferred embodiments of the present invention, and do not represent all the technical ideas of the present invention, so various alternatives that can be substituted for them at the time of application It should be understood that there may be equivalents and variations.

In addition, terms including ordinal numbers such as first and second are used to describe various elements, and are only used for the purpose of distinguishing one element from other elements, and to limit the elements. Not used. For example, without departing from the scope of the present invention, a second component may be referred to as a first component, and similarly, a first component may be referred to as a second component.

In addition, terms used in the present specification are only used to describe specific embodiments, and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In addition, terms such as "comprises" or "have" described herein are intended to designate the presence of features, numbers, steps, actions, components, parts, or a combination thereof described in the specification, but one or a combination thereof. It is to be understood that the above other features, or the possibility of the presence or addition of numbers, steps, actions, components, parts, or combinations thereof, are not preliminarily excluded.

In addition, terms such as "unit", "group", and "module" described in the specification mean a unit that processes at least one function or operation, which may be implemented by hardware or software or a combination of hardware and software. In addition, "a or an", "one", "the" and similar related words are different from this specification in the context of describing the present invention (especially in the context of the following claims). Unless otherwise indicated or clearly contradicted by context, it may be used in a sense encompassing both the singular and the plural.

In addition to the above terms, specific terms used in the following description are provided to aid understanding of the present invention, and the use of these specific terms may be changed in other forms without departing from the technical spirit of the present invention.

In addition, embodiments within the scope of the present invention include computer-readable media having or transferring computer-executable instructions or data structures stored in the computer-readable media. Such computer-readable media may be any available media accessible by a general purpose or special purpose computer system. By way of example, such computer readable media may be in the form of RAM, ROM, EPROM, CD-ROM or other optical disk storage, magnetic disk storage or other magnetic storage, or computer executable instructions, computer readable instructions, or data structures. It may include, but is not limited to, physical storage media such as any other media that may be used to store or deliver certain program code means, and may be accessed by a general purpose or special purpose computer system. .

In addition, the present invention relates to a personal computer, a laptop computer, a handheld device, a multiprocessor system, a microprocessor-based or programmable consumer electronics, a network PC, a minicomputer, a mainframe computer, a mobile phone, a PDA, a pager. It can be implemented in a network computing environment having various types of computer system configurations including (pager) and the like. The invention may also be practiced in a distributed system environment where both local and remote computer systems linked through a network with a wired data link, a wireless data link, or a combination of wired and wireless data links perform tasks. In a distributed system environment, program modules may be located in local and remote memory storage devices.

In addition, it will be appreciated that each block of the process flow diagrams and combinations of the flow chart diagrams may be executed by computer program instructions. Since these computer program instructions can be mounted on the processor of a general purpose computer, special purpose computer or other programmable data processing equipment, the instructions executed by the processor of the computer or other programmable data processing equipment are described in the flowchart block(s). It creates a means to perform functions. These computer program instructions can also be stored in computer-usable or computer-readable memory that can be directed to a computer or other programmable data processing equipment to implement a function in a particular way, so that the computer-usable or computer-readable memory It is also possible to produce an article of manufacture containing instruction means for performing the functions described in the flowchart block(s). Computer program instructions can also be mounted on a computer or other programmable data processing equipment, so that a series of operating steps are performed on a computer or other programmable data processing equipment to create a computer-executable process to create a computer or other programmable data processing equipment. It is also possible for instructions to perform processing equipment to provide steps for executing the functions described in the flowchart block(s).

In addition, each block may represent a module, segment, or part of code that contains one or more executable instructions for executing the specified logical function(s). In addition, it should be noted that in some alternative execution examples, functions mentioned in blocks may occur out of order. For example, two blocks shown in succession may in fact be executed substantially simultaneously, or the blocks may sometimes be executed in reverse order depending on the corresponding function.

In describing the embodiments of the present disclosure in detail, examples of a specific system will be the main target, but the main subject matter to be claimed in this specification is the scope disclosed in the present specification to other communication systems and services having a similar technical background. It can be applied within a range that does not deviate greatly, and this will be possible at the judgment of a person skilled in the art.

Now, a voice recording method according to the present invention will be described in earnest.

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1 is a diagram illustrating a voice recording system according to an embodiment of the present invention.

Referring to FIG. 1, a voice recording system according to an embodiment of the present invention may include a receiver 100, a microphone 200, and an external device 300.

The receiver 100 is for receiving voice signals from the plurality of microphones 200 and transmitting them to the external device 300. The receiver 100 may be paired with each of the plurality of microphones 200 by performing a pairing procedure. At this time, in order to be paired with the microphones 200, the receiver 100 may receive identification information of each of the microphones 200 from the microphones 200 through a pairing request message, and such identification information is transmitted to the receiver 100 If it is confirmed that the identification information of the microphone 200 corresponding to ), a pairing response message may be transmitted to the microphone 200 to complete the pairing procedure.

In addition, the receiver 100 may receive voice signals from a plurality of paired microphones 200 and synthesize the received voice signals to be transmitted to the external device 300. The receiver 100 may pass the synthesized voice signals through a band-pass filter (BPF) and an amplifier, and then transmit the synthesized voice signals to the external device 300. Meanwhile, the receiver 100 may not synthesize the received voice signals, but pass each of the voice signals through a band-pass filter (BPF) and an amplifier, filter them, and then immediately transmit them to the external device 300.

The microphone 200 is for recording external sounds and transmitting them to the receiver 100. When external sounds are input, the microphone 200 may convert these sounds into digital audio signals. Further, the microphone 200 may transmit the converted voice signal to the receiver 100. Meanwhile, when the microphone 200 receives a pairing release request message from the receiver 100, the pairing between the microphone 200 and the receiver 100 may be released. In addition, when the reception strength of the voice signal transmitted from the microphone 200 by the receiver 100 is less than a predetermined threshold, the microphone 200 may automatically release the pairing with the receiver 100.

In addition, when the microphone 200 transmits a voice signal to the receiver 100, a wireless communication signal may be used. For example, the microphone 200 may transmit a voice signal to the receiver 100 using a common frequency of the 2.4 GHz band. In addition, when the microphone 200 transmits a voice signal to the receiver 100, the microphone 200 may transmit the voice signal according to a specific frequency hopping pattern. In this case, a detailed method of determining a specific frequency hopping pattern will be described later.

The external device 300 is a device that is connected to the receiver 100 by a wired cable to receive a voice signal from the receiver 100. In this case, the wired cable may be ADAT, FIRE-WIRE, USB, S/PDIF RCA, XLR, BNC, TS, TRS, RCA and MIDI.

Further, the external device 300 may be any one of a smart phone, a personal computer (PC), a notebook computer, an amplifier, and a digital single lens reflex (DSLR) camera.

The external device 300 may output an audio signal received from the receiver 100 through a speaker of the external device 300 or may be synthesized with image data photographed by a camera of the external device 300.

2 is a view for explaining the external structure of the receiver 100 and the microphone 200 according to the present invention.

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The receiver 100 and the microphone 200 according to an embodiment of the present invention have the same structure, but their functions may be different as described below.

When the configuration of FIG. 2 is the microphone 200, the microphone 200 includes a pin microphone connector 271 capable of connecting the pin microphone 291 at the top of the body, and a pairing button for transmitting and receiving a pairing request signal and a pairing response signal ( 273), including a built-in microphone (275) for recording external sound when the pin microphone (291) is not connected, and a power button (277) that can turn the power of the microphone 200 on/off (ON/OFF) can do.

On the other hand, on the front of the microphone 200, a power display unit 281 for checking whether the power is turned on/off and pairing, a remaining amount display unit 283 for displaying the remaining amount of the battery, and a microphone 200 It may include a charging display unit 285 to display whether or not to charge. When the power is turned on, the power display unit 281 changes to a first color, and when pairing is not performed, the first color may periodically blink. If the pairing with the receiver 100 is completed, the first color may be continuously turned on without blinking.

When the remaining amount of the battery of the microphone 200 remains below a certain threshold, the remaining amount display unit 283 may flicker in a second color. Meanwhile, when the battery of the microphone 200 is charged, the charging display unit 285 may be turned on in a third color.

On the other hand, when FIG. 2 is the receiver 100, the receiver 100 transmits and receives an external device connector 171, a pairing request signal, and a pairing response signal for connection to the external device 300 at the top of the body through a wired cable. A pairing button 173 for, and a power button 177 capable of turning on/off the power of the receiver 100 may be included. In this case, when the pairing button 173 is pressed for a predetermined time or longer, the receiver 100 may perform a pairing process. On the other hand, when the pairing button 173 is pressed for less than a predetermined time, the volume of the receiver may be gradually decreased.

In addition, when the power button 177 is pressed for a predetermined time or longer, power of the receiver 100 may be turned on/off (ON/OFF). On the other hand, when the power button 173 is pressed for less than a certain period of time, the volume of the receiver may be gradually increased.

Meanwhile, on the front of the receiver 100, a power display unit 181 for checking whether power is turned on/off and pairing, a remaining amount display unit 183 for displaying the remaining amount of the battery, and the receiver 100 It may include a charging display unit 185 to display whether or not to charge. When the power is turned on, the power display unit 181 changes to a fourth color, and when pairing is not performed, the fourth color may periodically flicker. If the pairing with the receiver 100 is completed, the fourth color may be continuously turned on without flickering. Meanwhile, the fourth color may be a color different from the above-described first color.

When the remaining amount of the battery of the microphone 200 remains below a certain threshold, the remaining amount display unit 283 may flicker in a second color. Meanwhile, when the battery of the microphone 200 is charged, the charging display unit 285 may be turned on in a third color.

3 is a diagram for explaining a method of transmitting a recorded voice to an external device according to an embodiment of the present invention.

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Referring to FIG. 3, a plurality of microphones 200 and a receiver 100 may perform pairing (S305).

Specifically, when the plurality of microphones 200 and the power buttons 177 and 277 of the receiver 100 are pressed for a predetermined time or longer, the plurality of microphones 200 and the receiver 100 may be turned on. In addition, when each of the plurality of microphones 200 and the pairing buttons 173 and 273 of the receiver 100 are pressed for a predetermined time or longer, the plurality of microphones 200 and the receiver 100 may perform pairing. .

For example, when the pairing buttons 173 and 273 are pressed for a predetermined time or longer, the microphone 200 may transmit a pairing request message including identification information of the corresponding microphone 200 to the receiver 100.

The receiver 100 stores identification information of the microphone 200 connectable to the corresponding receiver 100, and compares the identification information included in the pairing request message with the stored identification information, and if they match, the pairing request It may be determined that the microphone 200 that transmitted the message is the microphone 200 connectable to the corresponding receiver 100.

Accordingly, the receiver 100 may transmit a pairing response message including identification information of the receiver 100 to the microphone 200.

Upon receiving the pairing response message from the receiver 100, the microphone 200 checks and recognizes the identification information of the receiver 100 whether it is a pairing response message transmitted from the receiver 100 to which it is connected, and the microphone 200 When the pairing response message transmitted from the receiver 100 to be connected is correct, the microphone 200 transmits a connection confirmation message to the receiver 100, and the receiver 100 receiving the connection confirmation message sends a connection completion message. By transmitting, the pairing procedure between the receiver 100 and the microphone 200 may be completed.

Meanwhile, the connection completion message may include information on a frequency hopping pattern for transmitting and receiving a voice signal between the microphone 200 and the receiver 100. A method of determining the frequency hopping pattern by the receiver 100 will be described later.

Meanwhile, a maximum number of microphones 200 that can be connected to one receiver 100 may be set. Therefore, when another microphone 200 attempts to pair with the receiver 100 while the microphone 200 capable of maximum access to the corresponding receiver 100 is already paired, the operation of the receiver 100 may be problematic. I can.

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It is assumed that the maximum number of microphones 200 that can be connected to the receiver 100 is two, and that two microphones 200 are already paired with the receiver 100. At this time, when the other microphone 200 transmits a pairing request message to the receiver 100, the receiver 100 first compares the identification information included in the pairing request message with the stored identification information, and the corresponding receiver 100 It can be determined whether the microphone 200 can be connected to.

If it is determined that the microphone 200 is connectable, the receiver 100 may determine whether to pair the other microphone 200 and operate according to the following exemplary embodiment.

Example 1-1

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The receiver 100 releases the connection with the first paired microphone 200, transmits a pairing response message to the other microphone 200, and performs a subsequent procedure to perform a pairing procedure with the other microphone 200. Can be completed. In other words, the receiver 100 may maintain pairing with the second paired microphone 200.

Example 1-2

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The receiver 100 may measure the reception strength (eg, RSSI, RSRQ, etc.) of signals received from the three microphones 200. In this case, the receiver 100 may release the pairing with the microphone 200 having the lowest reception strength. For example, if the first or second paired microphone 200 has the lowest reception strength, a pairing connection release request message may be transmitted to the first or second paired microphone 200 to release the pairing connection.

If, for the third time, when the reception strength of the microphone 200 requesting pairing is the lowest, the receiver 100 transmits a pairing rejection message with respect to the pairing request message transmitted by the corresponding microphone 200, and currently the corresponding microphone ( 200) and can not be paired.

Example 1-3

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When the receiver 100 receives a pairing request message from the other microphone 200, the receiver 100 may transmit a pairing pending message to the two microphones 200 to which the receiver 100 is already connected. Then, the two microphones 200 may temporarily release the pairing connection.

When the pairing connection is temporarily released, the receiver 100 may perform a pairing connection with the other microphone 200 and analyze a voice signal received from the other microphone 200. For example, the receiver 100 may analyze a frequency of a voice signal received from another microphone 200 and a loudness of a sound included in the voice signal. In particular, the receiver 100 may divide the frequencies of the voice signal into predetermined intervals and analyze the loudness of the sound at each frequency interval.

The receiver 100 may analyze the frequency of the voice signals received from the two microphones 200, which are temporarily disconnected from the connection, and the loudness of the sound included in each voice signal. At this time, the previously received voice signals to be analyzed may be the most recently received voice signals at the time when the connection of the two microphones 200 is disconnected, or a voice signal in which sound from the time of release to a certain time before is recorded. It can be done.

The receiver 100 compares the result of analyzing the voice signal of the other microphone 200 with the result of analyzing the voice signal of the two microphones 200, and among the voice signals of the two microphones 200 , Sending a pairing release request message instructing to completely release the pairing to the microphone 200 corresponding to the voice signal most similar to the result of analyzing the voice signal of the other microphone 200, and the connection is completed to the other microphones 200 Pairing can be performed again by sending a message.

That is, in this case, the microphone 200 paired with the receiver 100 will be the other microphone 200 and the other microphone 200. In other words, the rest of the microphone 200 does not perform the pairing connection procedure from the beginning, and can complete the pairing connection if only the connection completion message is received, thereby reducing signal overhead and shortening the pairing time. have. In addition, when a failure or abnormality occurs in the microphone 200 to be disconnected, it is advantageous in that it is possible to reduce the time interval during which the voice signal is not transmitted/received while efficiently replacing the microphone 200 with another microphone 200.

Meanwhile, the receiver 100 may receive an audio signal from two connected microphones 200 (S310). At this time, between the receiver 100 and the microphone 200, a voice signal can be transmitted and received based on a specific frequency hopping pattern, and information on this specific frequency hopping pattern is included in the connection completion message in the pairing procedure, as described above. Can be included.

The receiver 100 may determine the type of the external device 300 to which the receiver 100 is connected and the frequency hopping pattern used by the paired microphone 200.

Specifically, for example, it may be as follows.

Example 2-1

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If the external device 300 to which the receiver 100 is connected uses wireless communication such as Bluetooth or Wi-Fi, such as a smart phone, a PC, or a notebook computer, a frequency hopping pattern method will be described. Here, Bluetooth or Wi-Fi is only an example of wireless communication used by the external device 300, and a frequency band used for transmitting and receiving a voice signal between the receiver 100 and the microphone 200 (for example, a shared frequency band 2.4Ghz) sharing wireless communication technology is used by the external device 300, the present embodiment can be applied.

The receiver 100 receives information on a channel currently used or occupied by the external device 300 (eg, a Bluetooth channel or a Wi-Fi channel) from the external device 300 through a wired cable connected to the external device 300 can do.

The receiver 100 may determine a frequency hopping pattern using channels excluding channels used or occupied by the external device 300. In this case, a different frequency hopping pattern may be allocated to each of the receiver 100 and the two microphones 200 that transmit and receive a voice signal. However, the receiver 100 may allocate the same frequency hopping pattern to each of the two microphones 200.

In addition, the receiver 100 has the same frequency bandwidth for each of the two microphones 200 regardless of whether a different frequency hopping pattern is allocated to each of the two microphones 200 or the same frequency hopping pattern is allocated. can do. In this case, the frequency bandwidth may be determined in consideration of a channel used or occupied by the external device 300. That is, in order to avoid collision with a channel used or occupied by the external device 300 as much as possible, the receiver 100 uses or occupies the frequency bandwidth allocated to the two microphones 200. It can be determined by considering the channel.

On the other hand, if the same frequency hopping pattern is assigned to the two microphones 200 within the same frequency bandwidth, collisions between voice signals transmitted and received to the two microphones 200 may occur.

To prevent this, the receiver 100 may additionally include an offset value in the connection completion message transmitted to any one of the two microphones 200. That is, among the two microphones 200, the connection completion message transmitted to the first microphone 200 may include information on a frequency hopping pattern, and the connection completion message transmitted to the second microphone 200 is frequency It may include information on the hopping pattern and an offset value.

Further, the second microphone 200 may be a microphone that attempts to pair with the receiver 100 after the first microphone 200 is paired with the receiver 100.

On the other hand, when the receiver 100 transmits the information on the frequency hopping pattern and the offset value to the second microphone 200, the receiver 100 is the same frequency hopping pattern as the first microphone 200 and the second microphone 200 The voice signal is transmitted and received based on, but the voice signal may be transmitted and received with a time difference equal to the offset value. For example, if a voice signal is transmitted to the first microphone 200 using the #n channel at the time t0, and the offset value is 1 ms, the second microphone 200 uses the #n channel at the time t0+1ms. Voice signals can be transmitted.

Example 2-2

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A frequency hopping pattern method when the external device 300 to which the receiver 100 is connected does not use wireless communication such as Bluetooth or Wi-Fi such as an amplifier or a DSLR camera will be described. Here, Bluetooth or Wi-Fi is only an example of wireless communication used by the external device 300, and a wireless communication technology that shares a frequency band used for transmission and reception of voice signals between the receiver 100 and the microphone 200 is used. If the device 300 is not in use, this embodiment may be applied.

That is, even if the external device 300 is using a different wireless communication technology, the other wireless communication technology is a frequency band used to transmit and receive voice signals between the receiver 100 and the microphone 200 (for example, shared If the frequency band 2.4Ghz) is not used, this embodiment can be applied.

The receiver 100 may receive information from the external device 300 through a wired cable connected to the external device 300 that there is no channel currently used or occupied by the external device 300 or a corresponding frequency band is not used. .

Upon receiving the information, the receiver 100 may allocate the same frequency hopping pattern to the first microphone 200 and the second microphone 200. However, a frequency bandwidth for transmitting and receiving a voice signal to and from the first microphone 200 and the second microphone 200 may be set differently. In addition, the frequency bandwidth for transmitting and receiving voice signals to the first microphone 200 and the second microphone 200 may be continuous, but a guard bandwidth may be allocated between the frequency bandwidths.

For example, when there are 100 consecutive channels that the receiver 100 can use, 10 of them may be used as a guard bandwidth. For example, channels #0 to #44 are allocated for the first microphone 200, channels #45 to #54 are used as the guard bandwidth, and channels #55 to #99 are used for the second microphone 200. Can be assigned.

At this time, assuming that #55 channel corresponds to channel #0, channel #56 corresponds to channel #1, and channel #99 corresponds to channel #44, the first microphone 200 and the second microphone ( 200) can be assigned the same frequency hopping pattern. This is, when there is a margin in the usable frequency bandwidth, the first microphone 200 and the second microphone 200 transmit and receive voice signals through different frequency bands, thereby minimizing collision of voice signals and quickly transmitting voice signals. Because it can be transmitted. In addition, the use of the guard bandwidth can prevent the possibility of collision due to the frequency offset phenomenon.

When the receiver 100 receives voice signals from the microphones 200, the received voice signals may be synthesized (S315).

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The receiver 100 that has received the voice signal from the microphones 200 transmits the voice signal in mono form by passing the voice signal received from each of the microphones 200 through a specific BPF to remove noise. , After passing the AMP to amplify the signal, it can be sent to each channel.

In this case, a specific BPF may use a packet of a fixed length. For example, a specific BPF uses a fixed-length packet of 2Mbps and can sample audio in units of 24bits of 48KHz.

If, in order for the receiver 100 that has received the voice signal from the microphones 200 to transmit the synthesized voice signal in a stereo manner, which microphone 200 is located to the left of the receiver 100 or relatively You need to figure out if it is on the right.

Accordingly, the receiver 100 measures the signal reception strength of each of the two microphones 200. At this time, in order to measure the reception strength, the two microphones 200 may transmit an arbitrary signal to the receiver 100.

In addition, the first microphone 200 transmits an arbitrary signal to the second microphone 200, so that the second microphone 200 measures the first reception strength of the transmitted signal of the first microphone 200, and 2 The microphone 200 may transmit an arbitrary signal to the first microphone 200 so that the first microphone 200 may measure a second reception intensity of the transmitted signal from the second microphone 200.

Further, the second microphone 200 may transmit the first reception intensity to the receiver 100, and the first microphone 200 may transmit the second reception intensity to the receiver 100. The receiver 100 is based on the first and second reception strengths and the signal reception strength of each of the two microphones 200 measured by the receiver 100, among the first microphone 200 and the second microphone 200 , It is possible to determine a microphone located relatively to the left and a microphone located relatively to the right.

If the first microphone 200 is located relatively to the left and the second microphone 200 is located relatively to the right, the receiver 100 may provide a voice signal of the first microphone 200 and the second microphone 200. The voice signal of the first microphone 200 is transmitted to the left channel after filtering by passing each of the BPF through the BPF and filtering through the AMP, and the voice signal of the second microphone 200 is transmitted to the right channel. can do.

Meanwhile, in order to output the voice according to the frequency band, the voice signal of the first microphone 200 and the voice signal of the second microphone 200 are passed through the first BPF, and the voice signal of the first microphone 200 2 The voice signal of the microphone 200 may pass through the second BPF, the voice signals passing through the first BPF may be output through the left channel, and the voice signals passing through the second BPF may be output through the right channel.

Meanwhile, the voice signal of the first microphone 200 and the voice signal of the second microphone 200 are passed through the first BPF, and the voice signal of the first microphone 200 and the second microphone 200 are passed to the second BPF. When passing the voice signal, in order to synchronize the voice signal of the first microphone 200 and the voice signal of the second microphone 200, based on the signal reception strength of each of the two microphones 200, By calculating the time difference between the voice signal of the first microphone 200 and the voice signal of the second microphone 200, the voice signal arriving earlier is delayed by the time difference and passed through the BPF, so that synchronization can be achieved. .

The receiver 100 may transmit the synthesized voice signal to the external device 300 so that the synthesized voice signal is output through the external device 300 (S320).

4 to 5 are block diagrams showing the configuration of an apparatus for implementing the embodiment of the present invention.

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4 is a block diagram for explaining the configuration of the receiver 100 for implementing the embodiment of the present invention described above.

Referring to FIG. 4, the receiver 100 may include a control module 110, a communication module 120, and a storage module 130.

The storage module 130 is a device for storing data, includes a main memory device and an auxiliary memory device, and stores an application program required for functional operation of the receiver 100. The storage module 130 may largely include a program area and a data area. Here, when the receiver 100 activates each function in response to a user's request, the receiver 100 executes corresponding application programs under the control of the control module 110 to provide each function.

The communication module 120 may transmit and receive data with the microphone 200 and the external device 300. In addition, the communication module 120 is an RF transmission means for up-converting and amplifying a frequency of a transmitted signal, an RF receiving means for low-noise amplifying and down-converting a received signal, and a communication protocol for processing a communication protocol according to a specific communication method. And data processing means. The communication module 120 may include a first communication module 121 using wireless communication and a second communication module 123 using wired communication. In addition, the first communication module 121 is a component for transmitting and receiving data according to a wireless communication method, and the receiver 100 may transmit and receive a voice signal through the microphone 200 and the first communication module 121.

In addition, the receiver 100 may communicate with the external device 300 through the second communication module 123. At this time, the second communication module 123 may be for inputting a wired cable such as ADAT, FIRE-WIRE, USB, S/PDIF RCA, XLR, BNC, TS, TRS, RCA, and MIDI, and the wired cable Through this, voice signals may be transmitted and received with the external device 300.

The control module 110 may be an operating system (OS) and a process device that drives each component.

Therefore, the control module 110 of the receiver 100 may control the voice signal to be transmitted and received with the microphone 200 and the external device 300 through the communication module 120.

In addition, the control module 110 of the receiver 100 may control the overall operation process of the receiver 100 according to an embodiment of the present invention. In other words, the entire operation process of the receiver 100 according to the embodiments of the present invention described above based on FIGS. 1 to 3 may be controlled by the control module 110.

5 is a block diagram illustrating a configuration of a microphone 200 for implementing the embodiment of the present invention.

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Referring to FIG. 5, the microphone 200 may include a control module 210, a communication module 220, a storage module 230, and an input module 250.

The storage module 230 is a device for storing data, includes a main memory device and an auxiliary memory device, and stores an application program required for functional operation of the microphone 200. The storage module 230 may largely include a program area and a data area. Here, when the microphone 200 activates each function in response to a user's request, the microphone 200 executes corresponding application programs under the control of the control module 210 to provide each function.

The communication module 220 may transmit and receive data to and from the receiver 100. In addition, the communication module 220 is an RF transmission means for up-converting and amplifying a frequency of a transmitted signal, an RF receiving means for low-noise amplifying and down-converting a received signal, and for processing a communication protocol according to a specific communication method. And data processing means. The communication module 220 may use wireless communication.

The control module 210 may be an operating system (OS) and a process device that drives each component.

Accordingly, the control module 210 of the microphone 200 can control the voice signal to be transmitted and received with the receiver 100 through the communication module 220.

In addition, the control module 210 of the microphone 200 may control the overall operation process of the microphone 200 according to an embodiment of the present invention. In other words, the overall operation process of the microphone 200 according to the embodiments of the present invention described above based on FIGS. 1 to 3 may be controlled by the control module 210.

The input module 250 receives various information such as number and text information, and transmits a signal input in connection with setting various functions and controlling the functions of the microphone 200 to the control module 210. In addition, the input module 250 is connected to the built-in microphone 275 and the pin microphone connector 271, receives a voice signal or a frequency signal input through the built-in microphone 275 or pin microphone 291, the control module You can pass it to 210.

As explained above, the specification includes details of a number of specific implementations, but these should not be construed as limiting to the scope of any invention or claimable, but rather, which may be specific to a particular embodiment of a particular invention. It should be understood as a description of features. Certain features described herein in the context of separate embodiments may be implemented in combination in a single embodiment. Conversely, various features described in the context of a single embodiment can also be implemented in multiple embodiments individually or in any suitable sub-combination. Furthermore, although features operate in a particular combination and may be initially described as so claimed, one or more features from a claimed combination may in some cases be excluded from the combination, and the claimed combination may be a subcombination. Or sub-combination variations.

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Likewise, although operations are depicted in the drawings in a specific order, it should not be understood that such operations must be performed in that particular order or sequential order shown, or that all illustrated operations must be performed in order to obtain a desired result. In certain cases, multitasking and parallel processing can be advantageous. In addition, separation of the various system components of the above-described embodiments should not be understood as requiring such separation in all embodiments, and the program components and systems described are generally integrated together into a single software product or packaged in multiple software products. You should understand that you can.

Specific embodiments of the subject matter described herein have been described. Other embodiments are within the scope of the following claims. For example, the operations recited in the claims may be performed in a different order while still achieving desirable results. As an example, the process depicted in the accompanying drawings does not necessarily require that particular depicted order or sequential order to obtain desirable results. In certain implementations, multitasking and parallel processing can be advantageous.

The present description presents the best mode of the present invention, and provides examples for describing the present invention and for enabling those skilled in the art to make and use the present invention. The written specification is not intended to limit the present invention to the specific terms presented. Accordingly, although the present invention has been described in detail with reference to the above-described examples, those of ordinary skill in the art can make modifications, changes, and modifications to these examples without departing from the scope of the present invention.

Therefore, the scope of the present invention should not be determined by the described embodiments, but should be determined by the claims.

The present invention relates to a receiver that receives voice signals from a plurality of microphones and transmits them to an external device, and a method of outputting a voice signal using the receiver, and more particularly, a receiver connected to a specific external device includes a plurality of microphones. The present invention relates to a method for transmitting a plurality of voice signals received from the external device to the specific external device and a structure of such a receiver.

According to the present invention, it is possible to efficiently transmit and receive voice signals according to the type of external device to which a receiver is connected, and to synthesize voice signals efficiently.

Therefore, it is possible to contribute to the overall development of the telecommunications industry through a receiver that receives voice signals from a plurality of microphones and transmits them to an external device and a method of outputting voice signals using the receiver, and there is sufficient possibility of marketing or sales. In addition, it has industrial applicability because it can be implemented clearly in reality.

100: receiver
200: microphone
300: external device

Claims (5)

In the voice recording system,
A plurality of microphones including a first microphone, a second microphone, and a third microphone; And
A receiver for receiving voice signals from the plurality of microphones and transmitting them to an external device; Including,
The receiver,
Paired with each of the first microphone and the second microphone,
Receiving a first audio signal from the first microphone, receiving a second audio signal from the second microphone,
By synthesizing the first voice signal and the second voice signal to generate a third voice signal,
Transmitting the third voice signal to the external device,
The receiver,
Measuring a first reception strength of the first voice signal received from the first microphone,
Measuring a second reception strength of the second voice signal received from the second microphone,
Receiving a pairing request message from the third microphone,
When the first reception strength of the first voice signal received from the first microphone is less than a threshold value, the pairing connection with the first microphone is released, and
When the identification information of the third microphone is confirmed, a response message for allowing pairing with the third microphone is transmitted to the third microphone, wherein the response message includes identification information of the receiver,
When the identification information of the receiver is confirmed by the third microphone, it is paired with the third microphone,
A connection completion message indicating that the pairing procedure with the third microphone has been completed is received from the third microphone,
The pairing with the receiver is characterized in that the first microphone is controlled to have a higher priority than the second microphone,
The connection completion message further includes information on a frequency hopping pattern,
The receiver,
Allocating a first frequency hopping pattern to the first microphone, a second frequency hopping pattern to the second microphone, and assigning a third frequency hopping pattern to the third microphone,
The first frequency hopping pattern to the third frequency hopping pattern each have a different frequency hopping pattern, but have the same frequency bandwidth, and the frequency bandwidth corresponding to the first frequency hopping pattern to the third frequency hopping pattern is the external Control so as not to overlap with the frequency bandwidth allocated to the device,
As for the information on the frequency hopping pattern, a first frequency hopping pattern is assigned to the first microphone, a second frequency hopping pattern is assigned to a second microphone, and a third frequency hopping pattern is assigned to the third microphone,
The information on the frequency hopping pattern includes information indicating the first frequency hopping pattern allocated to the first microphone, information indicating the second frequency hopping pattern allocated to the second microphone, and information allocated to the third microphone. Including information indicating the third frequency hopping pattern,
The receiver,
Identifying a relative position between the first microphone and the second microphone based on the first reception strength and the second reception strength,
Controlling to pass the first voice signal received from the first microphone and the second voice signal received from the second microphone through a first band pass filter (BPF) at a specific time,
Controlling to output a signal passing through the first band pass filter through a first channel of the first microphone,
Calculate a time difference between the first voice signal and the second voice signal based on the first received strength and the second received strength,
At a time difference from the specific time point by the time difference, the first voice signal received from the first microphone and the second voice signal received from the second microphone are passed through a second band pass filter (BPF). To control it,
It characterized in that controlling to output the signal passed through the second band pass filter through the second channel of the second microphone,
Voice recording system. The method of claim 1,
The receiver,
When the first button of the first microphone is pressed for more than a certain time, and the first button of the receiver is pressed for more than the certain time, the first microphone and the receiver are paired,
When the first button of the second microphone is pressed for more than a predetermined time, the second microphone and the receiver are paired,
When the first button of the receiver is pressed for less than a predetermined time, the received volume of the receiver is controlled by the receiver to decrease,
Voice recording system. delete The method of claim 1,
The external device,
Smartphone, PC (Personal Computer), notebook computer, amplifier and DSLR (Digital Single Lens Reflex) camera,
Voice recording system. delete

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