KR101363452B1 - System for identification of speakers and system for location estimation using the same - Google Patents

Abstract

A system for speaker identification, comprising: hardware for converting a signal into a reproducible form of a speaker; And a first converter for converting the signal converted by the hardware into a signal so as to include a speaker identifier assigned to the speaker corresponding to the speaker and providing the signal to the speaker. do.

Description

Field of the Invention [0001] The present invention relates to a system for identifying a speaker and a position estimation system using the same.

The present invention relates to a system for identifying a speaker and a position estimation system using the same.

The position estimation system is a system for real-time confirmation of the position of a person or object based on a specific technology. The position estimation system mainly utilizes GPS and base station signals.

For example, Korean Patent Publication No. 10-2009-0008960 discloses a technique disclosed in "Location Tracking Device, Location Tracking System and Location Tracking Method" as of January 22, 2009, Technology.

Another example is Korean Patent Publication No. 10-2009-0072765, entitled " Device Location Tracking Device and Method Using Portable Base Station System and Call Processing Device Using It ", which is a technology disclosed in Jul. 02, 2009, It is a technology to track the position based on the base station signal.

However, it is not easy to accurately and reliably track a position in a store selling goods, such as a department store, by using the above-described conventional positioning techniques. In order to accurately track the position, There is a problem.

According to one or more exemplary embodiments of the present invention, a position estimation method and a position estimation system capable of reliably estimating a position, and an acoustic system and a mobile terminal used therefor may be provided.

According to one or more exemplary embodiments of the present invention, a position estimation method and a position estimation system capable of accurately and reliably estimating a position as a simple apparatus, and an acoustic system and a mobile terminal used therefor can be provided.

According to an embodiment of the present invention there is provided a system for speaker identification comprising: hardware for converting a signal into a reproducible form of a speaker; And a first conversion unit for converting a signal converted by the hardware into a signal so that a speaker identifier assigned to the speaker corresponding to the speaker is included and providing the converted signal to the speaker corresponding to the speaker, Can be provided.

According to another embodiment of the present invention, there is provided a system for first speaker identification; A system for second speaker identification; And a server for transmitting the first speaker identification information to the system and transmitting the second speaker identifier assignment information to the system for the second speaker identification, The system converts the signal converted into the reproducible form of the speaker into a signal corresponding to the speaker for the first speaker identification by converting the signal so that the speaker identifier allocated to the speaker corresponding to the speaker is included, A system for speaker identification converts a signal converted into a reproducible form by a speaker into a signal corresponding to a speaker corresponding to the speaker, A system for speaker identification can be provided.

According to another embodiment of the present invention, there is provided a mobile device of a position estimation system including a mobile device and a server for estimating a position of the mobile device, the mobile device comprising: a computer processor; And a memory for storing program instructions executable by the computer processor; / RTI >

At least some of the program instructions may include instructions for:

i) a signal of an audible frequency band received by a microphone of the mobile device,

ii) at least one speaker identifier signal extracted from a signal of an audible frequency band received by the microphone,

iii) a part of the signal extracted from the signal of the audible frequency band received by the microphone, the part including at least one identifier signal, and

iv) a signal obtained by encrypting any one of i), ii) and iii)

And transmitting the generated data to the server.

According to another embodiment of the present invention, there is provided a mobile device of a position estimation system including a mobile device and a server for estimating a position of the mobile device, the mobile device comprising: a computer processor; And a memory for storing program instructions executable by the computer processor; Some of the program instructions refer to the location information tracked by the location tracking unit of the mobile device to determine whether the current location of the mobile device is in a predefined speaker- Wherein another portion of the program instructions, if the current location of the mobile device is in the speaker-based location estimate area,

i) a signal of an audible frequency band received by a microphone of the mobile device,

ii) at least one speaker identifier signal extracted from a signal of an audible frequency band received by the microphone,

iii) a part of the signal extracted from the signal of the audible frequency band received by the microphone, the part including at least one identifier signal, and

iv) a signal obtained by encrypting any one of i), ii) and iii)

And transmits the generated information to the server.

According to another embodiment of the present invention, there is provided a method for estimating a position of a mobile terminal using a system for speaker identification including a plurality of speakers and a sound reproducing apparatus for outputting a signal in an audible frequency band, Providing a system for identification to each of the at least one speakers after generating a signal to include a speaker identifier assigned to each of the at least one speakers; The mobile terminal receiving a signal of an audible frequency band outputted from at least one of the plurality of speakers; Estimating a position of the mobile terminal using at least one of speaker identifiers included in a signal of an audible frequency band received by the mobile terminal; A position estimating method for estimating a position of the mobile terminal,

In accordance with one or more embodiments of the present invention, a system for identifying a speaker may be used in various fields, for example, in combination with a position estimation system. In this case, by using the pre-built acoustic system, the effect of simplifying the installation of the infrastructure necessary for the position estimation can be obtained.

According to another embodiment of the present invention, since a microphone installed in the mobile device of the receiving end is used, additional hardware for locating is not required, so that it has versatility applicable to many kinds of mobile devices.

 According to another embodiment of the present invention, the use of a pre-built acoustic system designed to transmit sound signals excellently facilitates the transmission and reception of signals, thereby achieving an accurate position estimation.

According to another embodiment of the present invention, the frequency band used by the acoustic system is additionally used, so that it is possible to estimate the position without the cost of purchasing the frequency band. In addition, it is possible to avoid various regulations when using different frequency bands, thereby saving the cost of developing a position estimation system.

1 is a view for explaining a system for speaker identification according to an exemplary embodiment of the present invention,
2 is a diagram for explaining a system for speaker identification according to an exemplary embodiment of the present invention,
3 is a diagram for explaining a system for speaker identification according to another exemplary embodiment of the present invention
4 is a view for explaining a system for speaker identification according to another exemplary embodiment of the present invention,
5 is a diagram for explaining a position estimation system according to another exemplary embodiment of the present invention,
FIG. 6 is a view for explaining the embodiment of FIG. 5,
7 is a view for explaining a position estimation method according to an exemplary embodiment of the present invention,
8 is a view for explaining a position estimation method according to another exemplary embodiment of the present invention,
9 is a view for explaining a mobile device according to another exemplary embodiment of the present invention,
FIG. 10 is a view for explaining a mobile device according to another exemplary embodiment of the present invention, and FIG.
11 is a view for explaining a mobile device according to another exemplary embodiment of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The above and other objects, features, and advantages of the present invention will become more readily apparent from the following description of preferred embodiments with reference to the accompanying drawings. However, the present invention is not limited to the embodiments described herein but may be embodied in other forms. Rather, the embodiments disclosed herein are provided so that the disclosure can be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. In this specification, when an element is referred to as being on another element, it means that it can be formed directly on the other element, or a third element may be placed therebetween.

Further, when it is mentioned that an element (or component) is operated or executed on another element (or component) ON, the element (or component) Or may be operated or executed in an environment, or through interaction with other elements (or components) either directly or indirectly.

It is to be understood that when an element, component, apparatus, or system is referred to as comprising a program or a component made up of software, it is not explicitly stated that the element, component, (E.g., memory, CPU, etc.) or other programs or software (e.g., drivers necessary to drive an operating system or hardware, etc.)

It is also to be understood that the elements (or components) may be implemented in software, hardware, or any form of software and hardware, unless the context clearly dictates otherwise.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. In the present specification, the singular form includes plural forms unless otherwise specified in the specification. The terms "comprises" and / or "comprising" used in the specification do not exclude the presence or addition of one or more other elements.

Hereinafter, the present invention will be described in detail with reference to the drawings. In describing the specific embodiments below, various specific details have been set forth in order to explain the invention in greater detail and to assist in understanding it. However, it will be appreciated by those skilled in the art that the present invention may be understood by those skilled in the art without departing from such specific details. In some cases, it is mentioned in advance that parts of the invention which are commonly known in the description of the invention and which are not highly related to the invention are not described in order to prevent confusion in explaining the invention without cause.

Definition of Terms

In the description and claims of the present application, the term 'audible frequency band' refers to the meaning collectively referred to as an audible frequency band (20 to 20 kHz) and a peripheral band of an audible frequency band (for example, 0 to 20 Hz and 20 kHz to 30 kHz) If there is a merit to distinguish between the two, they shall be referred to separately. For example, when referring to the audible frequency band (20 to 20 kHz), it is referred to as a 'negotiated audible frequency band', while when referring to the audible frequency band (0 to 30 kHz) do.

Also, in the description and claims of the present application, the terms 'signal' and 'data' shall be used interchangeably, unless otherwise specified.

Further, in the description and claims of the present application, the 'speaker identification signal' may mean a signal including i) a speaker identifier, or ii) a speaker identifier and a raw acoustic data.

Also, in the present description and claims, 'raw acoustic data' may mean acoustic data that does not include a speaker identifier.

1 is a diagram for explaining a system for speaker identification ('a system for speaker identification') according to an exemplary embodiment of the present invention.

Referring to FIG. 1, the system includes a plurality of systems 10a, 10b, and 10c for speaker identification, and may further include a server 5. In the present embodiment, although a plurality of systems for speaker identification are shown, this is illustrative and it is possible to implement one or the other number.

Hereinafter, for the purpose of explanation, the description will be made with reference to the system 10a for speaker identification.

The system 10a for speaker identification can provide a signal for speaker identification to each of the speakers S1_a, S2_a, S3_a, S4_a.

Here, the speaker identification signal may be a signal including i) a speaker identifier or ii) a signal including a speaker identifier and raw sound data.

The speaker identifier may be, for example, an analog signal converted from digital data, such as 0110101, and may be identified by frequency band, phase, amplitude, and / or transmission time band transmitted to the speaker.

Speaker identifiers are defined as: i) a signal in a particular frequency band, ii) a signal with a specific phase, iii) a signal transmitted at a specific time of day, iv) a signal with a specific amplitude, or v) Or a combination of all of them.

the system 10a for speaker identification provides a speaker identification signal having a speaker identifier of the frequency f1 to f2 in the speaker S1_a and a speaker identification signal in the frequency f4 to f5 A speaker identifying signal having a speaker identifier is provided to the speaker S3_a and a speaker identifying signal having a speaker identifier having a frequency f6 to f7 band is provided to the speaker S3_a and a speaker identifying signal having a speaker identifier having a frequency f8 to f9 band is provided to the speaker S4_a A speaker identification signal can be provided.

For example, the system 10a for speaker identification provides a speaker identification signal including a speaker identifier having a phase lambda 1 to the speaker S1_a and a speaker identifier having a phase lambda 2 to the speaker S2_a A speaker identification signal including a speaker identifier having a phase lambda 3 is provided to the speaker S3_a and a speaker identification signal having a speaker identifier having a phase lambda 4 is provided to the speaker S4_a .

iii), the system 10a for speaker identification provides a speaker identification signal to the speaker S1_a in the time bands t1 to t2 [sec], while the speaker S2_a supplies the speaker S2_a in the time bands t3 to t4 [sec And supplies the speaker S4_a with a speaker identification signal at a time interval of t7 to t8 [sec], and supplies the speaker identification signal to the speaker S4_a at time t7 to t8 [sec] Can be provided.

the system 10a for speaker identification provides a speaker identification signal with a speaker identifier having an amplitude A [m] to the speaker S1_a and an amplitude B [m] to the speaker S2_a, And a speaker identification signal having a speaker identifier of a frequency band f3 to f4 having an amplitude C [m] is provided to the speaker S3_a and a speaker identification signal having a speaker identifier of a frequency f3 to f4 band is provided to the speaker S3_a, It is possible to provide a speaker identification signal having a speaker identifier having D [m].

the system 10a for speaker identification provides a speaker identification signal including a speaker identifier of a frequency band f1 to f2 having a phase lambda 1 to the speaker S1_a and a speaker identification signal including a phase lambda 2 And a speaker identification signal including a speaker identifier of a frequency band f3 to f4 having a phase lambda 1 is provided to the speaker S3_a and a speaker identification signal including a speaker identifier S4_a ) May be provided with a speaker identification signal including a speaker identifier of a frequency band f3 to f4 having a phase lambda 2.

v), the system 10a for speaker identification provides the speaker S1_a with a speaker identification signal having a speaker identifier of the frequency f1 to f2 in the time bands t1 to t2 [sec] A speaker identifying signal having a speaker identifier in the frequency f1 to f2 band is provided to the speaker S2_a in the time bands t3 to t4 [sec] and a speaker identifying signal having a speaker identifier in the frequency f3 to f4 band is supplied to the speaker S3_a To the time zones t1 to t2 [sec], and to the speaker S4_a, the speaker identification signals having the speaker identifiers of the frequencies f3 to f4 in the time zones t3 to t4 [sec].

In the embodiments described above, the time band may be determined on the basis of absolute time or mutually agreed time. For example, the time zones t1 to t2 [sec] may be from 2:30:30 pm to 2:30:30 and 0.2 second, and t3 to t4 [sec] may be from 2:30 pm to 0,45 And t5 to t6 [sec] may be from 2:30 pm 0.5 second to 2:30 pm O.7 second, and t7 to t9 [sec] may be from 2:30 pm 0.75 second to 2:30 pm Min can be 0.95 seconds. In the present embodiment, a time band is set by dividing each second (sec) by 1/10 unit, but a time band can be set by a smaller 1/20 unit. Of course, these numerical values are illustrative, and the scope of the present invention is not limited to such numerical values.

According to an embodiment of the present invention, the system 10a for speaker identification may be configured such that some of the speakers S1_a, S2_a, S3_a, S4_a provide signals with the same speaker identifier, Lt; / RTI > For example, the system 10a for speaker identification provides a signal having a speaker identifier of a frequency band f1 to f2 to the speakers S1_a and S2_a and a signal having a speaker identifier of a frequency f3 to f4 band to the speakers S3_a and S4_a It is possible to provide a signal having a speaker identifier.

According to another embodiment of the present invention, a system 10a for speaker identification provides a signal with speaker identifiers in the frequency f1 to f2 band to the speakers S1_a, S2_a, S3_a, S4_a, (10b) provides a signal with speaker identifiers in the frequency f3 to f4 band to the speakers (S1_b, S2_b, S3_b, S4_b), and the system 10c for speaker identification has a speaker identifier in the frequency f5 to f6 band Signal to the speakers S1_c, S2_c, S3_c, and S4_c. Here, signals received from the system for speaker identification by the speakers S1_a, S2_a, S3_a, and S4_a may have different phases, signal amplitudes, and / or time zones to be transmitted. Also, the signals provided by the speakers S1_b, S2_b, S3_b, and S4_b may differ in phase, signal amplitude, and / or time band from each other. The same is true for the speakers S1_c, S2_c, S3_c, and S4_c.

The server 5 sends to the system 5 the speaker identifier allocation information (this information includes information about the speaker identifier signals available to each system) that can be used by the systems 10a, 10b, 10c for speaker identification 10b, and 10c, respectively, and each of the systems 10a, 10b, and 10c generates an identification signal for a speaker based on the received speaker identifier allocation information.

For example, the server 5 transmits the speaker identifier allocation information to the system 10a to use the signals of the frequencies f1 to f2 as speaker identifiers, and transmits the signals of the frequencies f3 to f4 to the system 10b Speaker identifier allocation information for use as a speaker identifier may be transmitted and the system 10c may be transmitted with speaker identifier allocation information for using a signal of a frequency band of f5 to f6 as a speaker identifier. In each of the systems 10a, 10b and 10c, based on the speaker identifier allocation information transmitted from the server 5, the phase, the amplitude of the signal, and / or the transmission time Band can be combined to generate a speaker identification signal, and then the speaker identification signal can be provided to the speakers.

In another example, the server 5 transmits speaker identifier assignment information to use different phases for each of the systems 10a, 10b, 10c, and each of the systems 10a, 10b, The speaker identification signal can be generated so as to have the received phase.

In addition to the embodiments described above, the systems 10a, 10b, and 10c may comprise speaker identifiers that can identify speakers by various combinations of frequency bands, amplitude, phase, It will be possible.

2 is a diagram for explaining a system for speaker identification according to an exemplary embodiment of the present invention.

Referring to FIG. 2, a system for speaker identification may include a sound reproducing apparatus 100, a first converting unit 150, and a plurality of speakers S1, S2, S3, and S4.

The sound reproducing apparatus 100 may include a memory 110, a computer processor 120, and a sound reproducing hardware 130. [ On the other hand, the sound input hardware 140 and the external sound reproducing apparatus 160 may be additionally installed as an option if necessary by a person skilled in the art.

 The memory 110 may store program instructions executable by the computer processor 120.

According to the present embodiment, the program instructions executed in the memory 110 may include program instructions 111 (hereinafter referred to as a 'playback unit') for reproducing sound data, and a driver 115. Although one memory 110 is shown, a person skilled in the art can also make up a plurality of memories.

The memory 110 may further store the data necessary for the program instructions to be executed and may store, for example, the audio data (OSD) These data may be used by the program instructions.

The sound reproducing hardware 130 converts the sound data reproduced by the reproducing unit 111 into a form that can be outputted from the speakers S1, S2, S3 and S4 and outputs the sound data reproduced by the first converting units 150a, 150b, 150c, 150d ).

In the present embodiment, the first conversion units 150a, 150b, 150c, and 150d correspond to the speakers and are located at the front ends of the speakers.

The first conversion units 150a, 150b, 150c and 150d convert the signals supplied from the sound reproduction hardware 130 into signals corresponding to the speakers corresponding to the speakers 150a, 150b, 150c and 150d, Converts it to include the identifier, and provides it to the speaker corresponding to it.

For example, the speaker S1 is associated with the first conversion section 150a, the speaker S2 is associated with the first conversion section 150b, and the speaker S3 is assigned with the first conversion And the first conversion unit 150d is located in correspondence with the speaker S4.

The first conversion unit 150a may perform one or more of the following operations, for example, with respect to a signal ('Sd') provided from the sound reproduction hardware 130.

i) the signal of the frequency band allocated as the identifier of the speaker S1 is left, and the signals of the frequency band allocated as the speaker identifier of the other speakers S2, S3, S4 are removed.

ii) A signal of a frequency band allocated as an identifier of the speaker S1 is added to the signal Sd.

iii) Converting the signal Sd so that it has an assigned phase as the identifier of the speaker S1.

iv) transforming the signal Sd so as to have the amplitude assigned as the identifier of the speaker S1.

v) transmits the signal Sd to the speaker S1 at a transmission time allocated to transmit the identifier of the speaker S1.

The other first conversion units 150b, 150c, and 150d operate in the same or similar manner as the first conversion unit 150a.

The driver 115 operates the sound reproducing hardware 130 when the reproducing unit 111 instructs the driver 115 to reproduce the sound data 117. [ The sound reproduction hardware 130 converts the sound data 117 in a form in which the speakers S1, S2, S3, and S4 can be output and provides the sound data 117 to the first converters 150a, 150b, 150c, and 150d.

Each of the first conversion units 150a, 150b, 150c, and 150d converts the signal provided from the sound reproduction hardware 130 to include the identifier of the speaker corresponding to the signal.

Here, the loudspeaker identifier may be any of the following: i) a signal in a specific frequency band, ii) a signal with a specific phase, iii) a signal transmitted at a specific time of day, iv) It may be a signal made up of all combinations.

Now, a case where sound data by the reproducing unit 110 or the external sound reproducing apparatus 160 is not reproduced will be described. Although not shown, the sound reproducing apparatus 100 may further include a user interface device (e.g., a monitor, a keyboard, and the like) capable of receiving a command from a user. The driver 115 controls the sound reproduction hardware 130 to generate a predetermined signal that does not include the sound data so as to generate the signals for converting the signals from the converters 150a and 150b , 150c, and 150d. Each of the converters 150a, 150b, 150c and 150d performs an operation of converting the speaker identifier allocated to the speaker corresponding thereto to be included in the predetermined signal.

The sound reproducing apparatus 100 may further include sound input hardware 140 that can receive sound data reproduced from the external sound reproducing apparatus 160, as described above. In this case, when the sound data is input through the sound input hardware 140, the computer processor 120 stores the sound data in the memory 110 and provides the sound data to the driver 115. The subsequent operation is the same as the above-described embodiment.

3 is a diagram for explaining a system for identifying a speaker according to an exemplary embodiment of the present invention.

Referring to FIG. 3, a system for speaker identification may include a sound reproducing apparatus 200, a first converting unit 250, and a plurality of speakers S1, S2, S3, and S4.

The embodiment of FIG. 3 differs from the embodiment of FIG. 2 in that the sound reproducing apparatus 200 further includes the second converting section 213 and the speaker identifier allocation information 219. The remaining components in FIG. 3 operate in the same or similar manner as those in FIG. 2 having similar reference numerals, and thus a detailed description thereof will be omitted.

The embodiment of FIG. 3 differs from the embodiment of FIG. 2 in that the second conversion unit 213 and the first conversion unit 150 interact with each other to generate a speaker identification signal.

The second conversion unit 213 generates a signal having an amplitude of a frequency band, a phase, and / or a signal assigned to the system for speaker identification.

According to the present embodiment, the program instructions executed in the memory 210 include program instructions 211 (hereinafter, referred to as 'playback unit') for reproducing sound data, generation of a speaker identification signal (Hereinafter referred to as a 'second conversion unit'), and a driver 115 for the program. Although one memory 210 is shown, a person skilled in the art can also construct a plurality of memories.

The memory 210 may further store the data necessary for the program instructions to be executed and may store, for example, audio data (OSD) 217 or speaker identifier allocation information 219. These data may be used by the program instructions.

In this embodiment, the second conversion unit 213 and the first conversion unit 250 cooperate to generate a speaker identification signal. Hereinafter, the operation of these components will be described in detail.

The second conversion unit 213 may convert the sound data to include a frequency signal of a predetermined band. Here, the frequency signal of the predetermined band may be a signal of the peripheral band of the audio frequency band.

For example, when the second conversion unit 213 converts the primary sound data to include the signals of the frequency f1 to f2 band, the converted signals are converted to the primary sound data by the first conversion units 250a, 250b, 250c, and 250d. The first conversion unit 250a converts the signals of the frequencies f1 to f2 included in the signals supplied from the sound reproduction hardware 230 to have a phase of? 1 and then provides the signals to the speaker S1. The second conversion unit 250b converts the signals of the frequencies f1 to f2 included in the signal provided from the sound reproduction hardware 230 to have a phase lambda 2. The third conversion unit 250c converts the signals of the frequency f1 to f2, And the fourth conversion unit 250d converts the signals of frequencies f1 to f2 included in the signal supplied from the sound reproduction hardware unit 230 to have a phase of lambda 3. The fourth conversion unit 250d converts the frequencies f1 to f2 included in the signals supplied from the sound reproduction hardware 230, so that the signal in the f2 band has a phase of? 4.

Alternatively, if the second conversion unit 213 converts the original sound data to include signals of the frequency f1 to f2 band, the converted signal is converted to the original sound data through the sound reproduction hardware 230 by the first conversion units 250a, 250b, 250c, and 250d. The first conversion unit 250a converts the signal amplitude of the frequencies f1 to f2 included in the signal provided from the sound reproduction hardware 230 to have a signal amplitude A [m], and then provides the signal S1 to the speaker S1 . The second conversion unit 250b converts the signal amplitude of the frequencies f1 to f2 included in the signal provided from the sound reproduction hardware 230 to have the amplitude B [m], and the third conversion unit 250c And the fourth conversion unit 250d converts the signal supplied from the sound reproduction hardware 230 so that the signal amplitude of the frequency f1 to f2 band included in the signal supplied from the sound reproduction hardware 230 has C [m] So that the amplitudes of the signals in the f1 to f2 bands included in the frequency domain are D [m].

Assume that the system for speaker identification illustrated in FIG. 3 is applied to the system for speaker identification illustrated in FIG. 1, and the embodiment of FIG. 3 will be described. The server 5 transmits speaker identifier allocation information to the system 10a for speaker identification so that signals of the frequencies f1 to f2 are used as speaker identifiers and the system 10b transmits signals of the frequencies f3 to f4 Speaker identifier allocation information to be used as an identifier can be transmitted and the system 10c can transmit speaker identifier allocation information for using a signal having a frequency band of f5 to f6 as a speaker identifier. In this case, in each of the systems 10a, 10b, and 10c, based on the speaker identifier allocation information received from the server 5, the phase, signal amplitude, and / Or a transmission time band may be combined to generate a speaker identification signal, and then the speaker identification signal may be provided to the speakers.

4 is a diagram for explaining a system for speaker identification according to another exemplary embodiment of the present invention.

4, a system for identifying a speaker includes a sound reproducing apparatus 300, a first converting unit 350, and a plurality of speakers S1, S2, S3, and S4, The computer system 300 may include a memory 310, a computer processor 320, and hardware 330. Here, the hardware 330 may include speech reproduction hardware.

4 and FIG. 3, the embodiment of FIG. 4 differs from the embodiment of FIG. 4 in that it does not include the reproducing section and the sound data.

Referring to FIG. 4, the second conversion unit 313 and the first conversion unit 350 may generate a speaker identification signal including only the speaker identifier without including the raw sound data.

4, the sound reproducing apparatus 300 may include a user interface device (e.g., a monitor, a keyboard, and the like) capable of receiving a command from a user. When it is instructed by the user to generate a speaker identification signal through the user interface device displayed on the monitor, the second conversion unit 313 generates a frequency signal of a predetermined band by referring to the speaker identifier allocation information 319, The hardware 330 then converts such signal to a form that can be output from the speaker. The operation of the remaining components is the same as or similar to the operation of the components in FIG. 3, so that reference is made to the description of FIG.

5 is a diagram for explaining a position estimation system using a system for speaker identification according to an exemplary embodiment of the present invention.

5, a location estimation system in accordance with an exemplary embodiment of the present invention may include a system 10 for speaker identification, a mobile terminal 50, and a management server 60. Here, the system 10 and the management server 60 for speaker identification may be connected through a wired or wireless communication network, and the mobile terminal 50 and the management server 20 may be connected through a wireless communication network.

As the system 10 for speaker identification, any one of the systems for speaker identification in FIGS. 1, 2, 3, and 4 described above may be used, or a speaker identification May be used.

The mobile terminal 50 receives (recognizes) at least one speaker identification signal output from the system 10 for speaker identification, identifies a speaker identifier included in the speaker identification signal received by the mobile terminal 50 The location of the mobile terminal 50 can be estimated based on the location of the mobile terminal 50. [

Although the operation of estimating the position of the mobile terminal 50 based on the speaker identifier has been described as being performed by the server 60 in the present embodiment, it may be implemented by the mobile terminal 50 as well. In this case, the mobile terminal 50 should have a location estimation unit and an SP_ID-P mapping table (a table in which speaker identifiers and locations are mapped).

On the other hand, when the server 60 estimates the position, the mobile terminal 50 may be implemented in any one of the following forms.

i) the speaker identification signal itself is transmitted to the server 60;

ii) extracts the speaker identifier included in the speaker identification signal and transmits it to the server 60;

iii) transmits to the server 60 a part of the signal for identifying the speaker (the part including the speaker identifier).

iv) Encrypt the speaker identifier or part of the data for speaker identification (which is a part including the speaker identifier) and transmit it to the server 60.

v) calculating a hash value by applying the speaker identifier or a part of the data for speaker identification (the portion including the speaker identifier) to the hash function, and transmitting the hash value to the server 60;

The mobile terminal 50 may also store signal characteristics for a speaker identification signal received from at least one or more speakers. Here, the signal characteristics include, for example, the intensity of the speaker identification signal, the degree of signal distortion, or the time at which the signal arrives.

The mobile terminal 50 may additionally provide the signal characteristics (e.g., signal strength, signal distortion, time taken for signal arrival, etc.) of the speaker identification signal when receiving from the system 10 for speaker identification, (60). For example, the mobile terminal 50 can transmit the signal strength of the speaker identification signal and the speaker identifier (or the speaker identification signal) to the server 60.

For example, if the speaker identifier is encrypted, the mobile terminal 50 decrypts the encrypted speaker identifier and transmits the decoded speaker identifier to the server 60, which the terminal 20 uses to estimate the position. Here, not all the mobile terminals 50 can decode the encrypted speaker identifier, but only the authenticated or authorized mobile terminal 50 can perform the operation of decrypting the speaker identifier. For example, it is also possible that only the mobile terminal 50 of the user who subscribed to the location tracking service can decode the speaker identifier.

As another example, if the speaker identifier is encrypted, the mobile terminal 50 transmits the encrypted speaker identifier to the server 60 without decryption, and the server 60 decodes the encrypted speaker identifier to estimate the position Can be used.

As another example, the mobile terminal 50 can determine data to be transmitted to the server 60 according to characteristics of the received signal and the number of speaker identifiers. For example, only when the number of speaker identifiers to be transmitted to the server 60 is two or more, it is possible to transmit the signal characteristics of the speaker identification signal to the server 60. That is, when the number of speaker identifiers to be transmitted to the server 60 is one, the mobile terminal 50 transmits a speaker identification signal (or a speaker identifier) without transmitting the signal characteristic of the speaker identification signal.

The server 60 receives the speaker identification signal from the mobile terminal 50 or receives the speaker identifier included in the speaker identification signal or receives the characteristic of the signal necessary for speaker identification, And can estimate the position of the mobile terminal 50 using the received data. According to one embodiment, the server 60 includes a 'speaker identifier-position mapping table' (SP_ID-1) for mapping speaker identifiers assigned to speakers included in the system 10 for position estimation and speaker identification, P mapping table).

The position estimating unit of the server 60 receives the acoustic data transmitted from the mobile terminal 50 or the speaker identifier included in the speaker identifying signal or the characteristics of the signal required for speaker identification, 50 estimates which speaker identifier was received, which speaker identifier was adjacent to the output speaker, or both. Through this estimation, one speaker identifier corresponding to the position of the mobile terminal is selected.

The position estimating unit of the server 60 may estimate the position mapped to the speaker identifier selected by the estimation using the SP_ID-P mapping table. In addition, it is possible to increase the probability that one speaker identifier selected through the estimation is the same as the speaker identifier closest to the actual mobile terminal 50 by repeatedly referring to the mapping table.

For example, the position estimating unit of the server 60 may estimate the position of the mobile terminal 50 by using the characteristics of the signals of the speaker identifiers when a plurality of speaker identifiers are received from the mobile terminal 50.

For example, the position estimating unit of the server 60 may estimate the position of the mobile terminal 50 with reference to the temporal change of the signal strength of the speaker identifier. This will be described in detail with reference to FIG.

On the other hand, the server 60 may perform an operation of updating an SP-SP_ID mapping table (a table in which speakers and speaker identifiers are mapped) stored by the system 10 for speaker identification. For example, if speakers included in the system 10 for speaker identification are added or deleted, the SP-SP_ID mapping table may be transmitted to the system 10 for speaker identification.

The SP-SP_ID mapping table 119 may be an example table as follows.

 speaker Speaker identifier (SP_ID)  SP1 ACOSωt  SP2 BCOSωt  SP3 ACOS (ωt + 90 °)  SP4 BCOS (? T + 90 °)

It is needless to say that the tables in Table 1 are illustrative, and the scope of right of the present invention is not limited to the tables in Table 1. [

Alternately, the system 10 for speaker identification may receive updates from the user of the SP-SP_ID mapping table it stores. For example, the system 10 for speaker identification may additionally include a user input / output device (e.g., keyboard, mouse, or monitor) capable of receiving commands or data from a user, The updated SP-SP_IP mapping table may be input to the system 10 for speaker identification using input devices.

On the other hand, the system 10 for identifying the speaker identifies the position change information of the speakers, information on the deleted speakers or the added speakers when the positions of the plurality of speakers included therein are changed, or when the speakers are deleted or added. 60). The server 60 may update the SP_ID-P mapping table based on information received from the system 10 for speaker identification.

Alternatively, the server 60 may store the SP-SP_ID mapping table and store the SP-SP_ID mapping table stored therein by the server 30 whenever a request is made from the system 10 for speaker identification periodically or aperiodically To the system 10 for speaker identification. The server 60 changes the SP-SP_ID mapping table stored in the self 30 to the system 10 for speaker identification even if there is no request from the system 10 for speaker identification, As shown in FIG.

Alternatively, the server 60 may further include a user input / output device capable of receiving information capable of updating the SD_IP-mapping table from the user. In this case, the server 60 may use the information input through the user input / The SD_IP-mapping table can be updated.

Although the embodiment of FIG. 5 has been described as including the management server 60 as described above, it is also possible to configure it not to include the management server 60 as an example. For example, the function of the management server 60 may be built in the mobile terminal 50. [ That is, it is possible to configure the mobile terminal 50 to include the location estimation unit and the SP_ID-P mapping table.

5, the mobile terminal 50 may be configured to include a computer processor 51, a memory 53, an H / W resource 55, and a S / W resource store 57 .

The memory 53 may store program instructions that can be executed by the computer processor 51. For example, a client that performs operations according to the present embodiment may be loaded into the memory 53 and operated.

The H / W resource 55 collectively refers to the hardware required for the operation of the mobile terminal 50. For example, hardware such as WiFi, ZigBee, Bluetooth, 3G, 4G, WiMax, WiBro, LTE, A GPS sensor, a microphone, a user input / output device (monitor, keyboard, mouse, etc.).

The S / W resource storage unit 57 collectively refers to software necessary for the operation of the mobile terminal 50, and can store system software, applications using location information, and the like.

The client performs the above-described operation related to the position estimation of the mobile terminal 50, and can perform an interaction with the server 60. [

For example, the client may perform one or more of the following actions.

i) the speaker identification signal itself is transmitted to the server 60;

ii) extracts the speaker identifier included in the speaker identification signal and transmits it to the server 60;

iii) transmits to the server 60 a part of the signal for identifying the speaker (the part including the speaker identifier).

iv) Encrypt the speaker identifier or part of the data for speaker identification (which is a part including the speaker identifier) and transmit it to the server 60.

v) calculating a hash value by applying the speaker identifier or a part of the data for speaker identification (the portion including the speaker identifier) to the hash function, and transmitting the hash value to the server 60;

The client 52 according to the exemplary embodiment can provide the location information transmitted from the server 60 to the application using the location information.

In addition, the client 52 can provide the client with the client operation mode setting screen, and the user can select the client operation mode through the screen. The client may have an operation mode to be executed when there is an execution command of the user and a background operation mode to operate in the background even if there is no execution command of the user, as will be described later with reference to FIG.

According to another embodiment, the mobile terminal 50 may include a position tracking unit for tracking a position using information such as a GPS sensor or an access point (AP) such as WiFi, ZigBee, Bluetooth, 3G, 4G, LTE, WiMax, . The location tracking unit (not shown) may provide location tracking information to the client 52 of the mobile terminal 50. This will be described in detail with reference to FIG.

Fig. 6 is a diagram provided for explaining the embodiment of Fig. 5. Fig.

In the embodiment of FIG. 6, the first conversion unit is implemented in the form of a filter that passes only a signal of a specific frequency band, and a speaker identification signal including a plurality of speaker identifiers is output from the sound reproduction hardware 130 of FIG. Will be described. It should be understood by those skilled in the art that the number of speakers is exemplary herein and that the present invention is not limited to such numbers. Also, it should be understood by those skilled in the art that the regions R1, R2, R3, R4 in which a plurality of speakers are located, respectively, and the size and number of such regions are also exemplary.

The signal output from the sound reproduction hardware 130 of FIG. 6 may be, for example, a signal (OSD, SP1_ID, SP2_ID, SP3_ID, SP4_ID) including a source sound data OSD and a plurality of speaker identifiers .

The signals (OSD, SP1_ID, SP2_ID, SP3_ID and SP4_ID) are provided to the converting units 140a, 140b, 140c and 140d, and the remaining speaker identifiers excluding the speaker's identifier Therefore, the signal output from the conversion unit 140a to the speaker S1 includes only the speaker identifier SP1_ID, and the other identifiers are not included. The remaining conversion units also operate in the same manner, Which can be easily understood by the symbols.

6, the first speaker SP1 is located in the first area R1, the second speaker SP2 is located in the second area R2, and the third speaker SP3 is located in the second area R2. And the fourth speaker SP4 is located in the fourth region R4.

Here, for the purpose of the description of the present invention, Signal (OSD, SP1_ID) means a signal of an audible frequency band in which the first speaker identifier (SP1_ID) is included in the original sound data OSD Signals Signal (OSD, SP2_ID), Signal (OSD, SP3_ID), Signal (OSD, SP4_ID) are also used in the same manner.

In FIG. 6, it is assumed that the mobile terminal 50 moves in the order of P1 - > P2 - > P3 and a method of estimating the position in the present position tracking system will be described below as an example.

The signal of the audio frequency band that the mobile terminal 50 receives may be Signal (OSD, SP1_ID) and Signal (OSD, SP3_ID) when the mobile terminal 50 is at the position P1. Signals OSD and SP1_ID are larger than Signal OSD and SP3_ID and signals corresponding to Signal OSD and SP1_ID arrive at the mobile terminal 50 before Signal OSD and SP3_ID do. Accordingly, the server 60 can estimate that the mobile terminal 50 is located in the area R1 mapped to the SP1_ID, more specifically, it can be estimated that the mobile terminal 50 is located closer to the area R3 mapped to the SP3_ID in the area R1 have.

The signal of the audio frequency band that the mobile terminal 50 receives may be Signal (OSD, SP1_ID), Signal (OSD, SP3_ID), and Signal (OSD, SP2_ID) while the mobile terminal 50 is moving to the position P2. have. If these signals are in the order of Signal (OSD, SP1_ID)> Signal (OSD, SP3_ID)> Signal (OSD, SP2_ID) (OSD, SP3_ID) received at the position P2 is smaller than the signal strength of the signal (OSD, SP3_ID) received at the position P1, SP3_ID of the mobile terminal 50 is longer than the signal of the signal (OSD, SP3_ID) received at the position P2, the server 60 determines that the mobile terminal 50 is located in the region R1 but is moving toward the region R2 It can be judged.

When the mobile terminal 50 is at the position P3, the signals of the audio frequency band that the mobile terminal 50 receives may be Signal (OSD, SP1_ID), Signal (OSD, SP2_ID), Signal (OSD, SP4_ID). If the intensity of these signals is in the order of Signal (OSD, SP2_ID)> Signal (OSD, SP4_ID), Signal (OSD, SP1_ID) Signal (OSD, SP1_ID) received in position P2 is smaller than the signal strength of signal (OSD, SP1_ID) received in position P2. Signal (OSD, SP1_ID) , SP1_ID is shorter than the signal arrival time of the signal (OSD, SP1_ID) received at P3, the server 60 can estimate that the mobile terminal 50 is located in the area R2 mapped to the SP2_ID .

As such, the server 60 can estimate the location of the mobile terminal 50 based on the type of speaker identifiers included in the audio frequency band received by the mobile terminal 50, and the temporal variation of the signal intensities.

FIG. 7 is a diagram for explaining a position estimation method according to an exemplary embodiment of the present invention.

The embodiment of FIG. 7 will be described with reference to FIGS. 5 and 7 on the assumption that the embodiment of FIG. 7 is implemented in the embodiment of FIG.

The system 10 for speaker identification generates data (speaker identification signal) including a plurality of speaker identifiers (S101), and outputs the speaker identification signal generated in the step S101 as a signal of an audible frequency band S103).

The system 10 for speaker identification converts the signal output in step S103 into a form suitable for each speaker (S105) and outputs it through each of the speakers.

The mobile terminal 50 receives a signal of an audio frequency band outputted through the speakers (S107), and the server 60 transmits the speaker identifier included in the signal of the audio frequency band received by the mobile terminal 50, The position of the mobile terminal 50 is estimated using the characteristic (S109).

In the present embodiment, although the server 60 has been described as performing the operation of S109, the mobile terminal 50 may directly perform the S109 operation.

8 is a view for explaining a position estimation method according to another exemplary embodiment of the present invention.

The embodiment of FIG. 8 will be described with reference to FIGS. 5 and 8 on the assumption that the embodiment of FIG. 8 is implemented in the embodiment of FIG.

A system 10 for speaker identification generates a speaker identification signal in a form suitable for each speaker and outputs it through a plurality of speakers. Here, the meaning of a suitable form has been described in the above-mentioned embodiments, and therefore will not be described here.

The mobile device 50 can receive signals of the audible frequency band outputted from the speakers and perform any one or more of the following operations.

 i) transmits the data for speaker identification itself to the server (60).

ii) extract the speaker identifier included in the data for identifying the speaker and transmit it to the server 60;

iii) transmits to the server 60 part of the data for speaker identification (which is a part including the speaker identifier).

iv) Encrypts the speaker identifier or part of the data for speaker identification (which is a part including the speaker identifier) and transmits it to the server 60.

v) calculating a hash value by applying the speaker identifier or a part of the data for speaker identification (the portion including the speaker identifier) to the hash function, and transmitting the hash value to the server 60;

On the other hand, the mobile device 50 may extract the speaker identifier, apply the extracted speaker identifier to a predetermined hash function to calculate the hash value, and then transmit the hash value to the server 60. [ In this case, the server 60 may store information in which the 'hash value vs location' is mapped to each other, and estimates the location by referring to such information.

The server 60 estimates the position of the mobile device 50 by referring to the information received from the mobile device 50 and the SP_ID-P mapping table in which the speaker ID and the position are mapped, To the device (50).

Although the server 60 and the mobile device 50 interact with each other to estimate the location of the mobile device 50 in the above-described embodiment, the location of the mobile device may be estimated using only the mobile device without a server Method can also be implemented. In this case, the mobile device may be configured to have the location estimation unit and the SP_ID_P mapping table.

9 is a diagram for explaining the operation of a mobile device according to another exemplary embodiment of the present invention.

The embodiment of FIG. 9 will be described with reference to FIGS. 5 and 9, assuming that the embodiment of FIG. 9 is implemented in the embodiment of FIG.

The processor 51 loads the client 52 into the memory 53 and executes the client 52 when the client 52 has an instruction to execute the client 52 from the outside (user of the mobile device) (S201: Y). The processor 51 also waits in a state in which a microphone (not shown) which is one of the H / W resources 55 can receive an external signal.

The client 52 monitors whether or not the sound data is received through the microphone (not shown) (S203). When the microphone (not shown) receives the sound data (S203: Y) (S205).

i) transmits the data for speaker identification itself to the server (60).

ii) extract the speaker identifier included in the data for identifying the speaker and transmit it to the server 60;

iii) transmits to the server 60 part of the data for speaker identification (which is a part including the speaker identifier).

iv) Encrypts the speaker identifier or part of the data for speaker identification (which is a part including the speaker identifier) and transmits it to the server 60.

v) calculating a hash value by applying the speaker identifier or a part of the data for speaker identification (the portion including the speaker identifier) to the hash function, and transmitting the hash value to the server 60;

Here, the monitoring (S203) may be performed periodically or non-periodically according to the occurrence of a specific event.

The client 52 receives location information from the server 60 (S207), and can provide it to an application that operates using the received location information.

When the computer processor 51 receives the end command of the client 52 from the user (S209: Y), the computer processor 51 ends the operation of the client 52. [

On the other hand, when there is no termination instruction of the client 52, the client 52 can operate again from S203 onwards.

10 is a diagram for explaining the operation of a mobile device according to another exemplary embodiment of the present invention.

Assuming that the embodiment of FIG. 10 is implemented in the embodiment of FIG. 5, the description will be made with reference to FIGS. 5 and 10. FIG.

The client 52 may generate a user interface screen that allows the user to select a client operation mode and display the user interface screen through a monitor (not shown), which is one of the H / W resources 55, to set the operation mode (S301 ).

When the background operation mode is not set (S303: N), the operations after step S201 in FIG. 7 are performed.

When the background operation mode is set (S303: Y), the client 52 monitors whether the sound data is received through a microphone (not shown) which is one of the H / W resources 55 (S305). The monitoring (S305) may be performed periodically or may be performed non-periodically according to the occurrence of a specific event. If the sound data is received (S305: Y), the client 52 performs at least one of i) to v) (S307) and receives the location information from the server 60 (S309). Here, the operations i) to v) are as described in FIG.

After step S309, the client 52 performs the operations after step S305 again.

11 is a view for explaining the operation of a mobile terminal according to another exemplary embodiment of the present invention.

5 will be described with reference to FIG. 5 and FIG. 11, assuming that the embodiment of FIG. 11 is implemented in the embodiment of FIG.

The mobile device 50 may track its location using conventional location tracking methods (e.g., GPS sensor and / or AP signaling) (S4O1). To this end, the mobile device 50 may further include a location tracking unit that can track the location of the mobile device 50 by conventional location tracking methods, or may include location information of the mobile device 50 from another external server Can be obtained. The term " conventional position tracking method " means a method of tracking a position by a method other than the embodiment according to the present invention.

The client 52 continuously determines whether the current position of the mobile device 50 tracked in step S401 is included in the predefined speaker-based position estimation area (S403). In step S403, the mobile device 50 stores location information for the speaker-based location estimation area. Using this information, the client 52 determines whether the mobile device 50 is in the speaker-based location estimation area Can be determined. The speaker-based position estimation region refers to an area R1 to R4 as exemplified in FIG. 6, which means an area capable of receiving signals output from speakers outputting speaker identification data according to the present invention.

If the current position of the mobile device 50 is included in the predefined speaker-based position estimation area, the client 52 monitors whether it is receiving sound data from the outside (S405). The monitoring (S405) may be performed periodically or non-periodically depending on the occurrence of a specific event.

The client 52 performs any one of the i) to iv) operations (refer to the description of Fig. 9) (S407) and, based on the speaker identifier, And receives the estimated location information of the mobile device 50 (S409).

The client 411 may determine the location of the current location tracked by conventional location tracking methods (e.g., a GPS sensor and / or a method using signals of APs such as WiFi, ZigBee, Bluetooth, 3G, 4G, LTE, WiBro, WiMax, It is determined whether or not the position of the mobile device is out of the speaker-based position estimation area (S411). If the position of the mobile device deviates (S411: Y), the operation after S401 is performed. do.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, Various modifications and variations are possible. Therefore, the scope of the present invention should not be limited to the described embodiments, but should be determined by equivalents to the scope of the appended claims, as well as the appended claims.

10: system for speaker identification 50: mobile terminal
60: management server

Claims (20)

A system for speaker identification, providing signals for speaker identification to speakers,
Hardware for converting raw acoustic data into a form reproducible in the speakers; And
A first converter corresponding to any one of the speakers, converting the signal converted by the hardware to include a speaker identifier assigned to the speaker corresponding to the self-first converter And a first conversion unit for providing the speaker corresponding to the self-first conversion unit. The method of claim 1,
A reproducing unit for reproducing sound data; Further comprising:
Wherein the hardware converts the signal reproduced by the reproducing section into a form reproducible by the speaker. The method of claim 1,
Wherein the first conversion unit converts the signal converted by the hardware to include a signal of a frequency band assigned to the speaker corresponding to the first speaker. The method of claim 1,
Wherein the first conversion unit converts the signal converted by the hardware to include a signal having a phase assigned to the speaker corresponding to the first speaker. The method of claim 1,
Wherein the first conversion unit converts the signal converted by the hardware to include a signal having an amplitude assigned to the speaker corresponding to the first speaker. The method of claim 1,
Wherein the first conversion unit transmits the signal converted by the hardware to a speaker corresponding to the speaker in a time band assigned to the speaker corresponding to the speaker. The method of claim 1,
Wherein the first conversion unit converts the signal converted by the hardware to include a signal having an amplitude of a frequency band, a phase, and / or a signal allocated to the speaker corresponding to the speaker, system. The method of claim 3,
Wherein the frequency band allocated to the speaker is a peripheral band of an audible frequency band. The method of claim 1,
And a second converter for generating a signal having an amplitude of a frequency band, a phase, and / or a signal assigned to the system for identifying the speaker,
The hardware converts the signal generated by the second conversion unit into a form reproducible by the speaker,
Wherein the first conversion unit converts the signal converted by the hardware into a signal to convert the signal to include the speaker identifier assigned to the speaker corresponding to the speaker. A system for first speaker identification;
A system for second speaker identification; And
And a server configured to transmit first speaker identifier allocation information to the system for identifying the first speaker and to transmit second speaker identifier allocation information to the system for identifying the second speaker.
The system for identifying the first speaker includes a speaker identifier assigned to the first speaker corresponding to the self-system for identifying the first speaker, the first signal converted from the original acoustic data into a form reproducible by the speaker. Converts the first signal to provide to the first speaker,
The system for identifying the second speaker includes a speaker identifier assigned to the second speaker corresponding to the self-system for identifying the second speaker, the second signal converted from the original acoustic data into a form reproducible by the speaker. And convert the second signal to provide to the second speaker as much as possible. The method of claim 10,
The server allocates some of the peripheral bands of the audible frequency band as speaker identifiers of the system for the first speaker identification and assigns some other frequency bands of the audible frequency band to the second speaker identification And assigning the speaker identifier as a speaker identifier. 1. A mobile device of a position estimation system comprising a mobile device and a server for estimating a position of the mobile device,
A microphone capable of receiving a speaker identification signal output from the speakers, respectively;
A computer processor; And
A memory for storing program instructions executable by the computer processor; Including;
At least some of the program instructions may include instructions for:
i) speaker identification data itself received from the speakers,
ii) a speaker identifier included in each of the speaker identification data received from the speakers,
iii) part of the speaker identification data received from the speakers (the part including the speaker identifier),
iv) data in which a speaker identifier included in the speaker identification data received from the speakers or a part of the speaker identification data (which is a part including the speaker identifier) is encrypted, or
v) a hash value obtained by applying the speaker identification data received from the speakers or a part of the speaker identification data (the part including the speaker identifier) to the hash function.
And transmitting the data to the server. The method of claim 12,
The memory further stores an SP_ID-P table in which a speaker identifier and a location are mapped to each other,
At least a portion of the program instructions,
Extracting at least one speaker identifier from a signal of an audible frequency band received by the microphone, and estimating a position of the mobile device using the extracted at least one speaker identifier and the SP_ID-P table. 1. A mobile device of a position estimation system comprising a mobile device and a server for estimating a position of the mobile device,
MIC;
A computer processor; And
A memory for storing program instructions executable by the computer processor; Including;
Wherein the program instructions monitor whether the current position of the mobile device is in a predefined speaker based position estimation area by referring to the position information tracked by the position tracking part of the mobile device,
The other part of the program instructions monitors whether the microphone is receiving acoustic data from the outside, if the current position of the mobile device is in the speaker based position estimation region, and if acoustic data is received by the microphone. ,
i) speaker identification data included in the sound data itself;
ii) a speaker identifier included in the speaker identification data included in the sound data,
iii) a part of speaker identification data included in the acoustic data (the part including speaker identifier),
iv) data in which the speaker identifier included in the acoustic data or a part of the speaker identification data (which is a part including the speaker identifier) is encrypted;
v) a hash value obtained by applying a speaker identifier included in the sound data or a part of speaker identification data (that is, a part including a speaker identifier) to a hash function
And transmitting the data to the server. 1. A position estimation method for estimating a position of a mobile terminal using a system for speaker identification including a plurality of speakers outputting a signal in an audio frequency band and an audio reproduction apparatus,
A system for speaker identification, comprising: generating a signal to include at least one speaker identifier assigned to each of at least one of its speakers, and providing the signal to each of the at least one speaker;
The mobile terminal receiving a signal of an audible frequency band outputted from at least one of the plurality of speakers; And
Estimating a position of the mobile terminal using at least one of speaker identifiers included in a signal of an audible frequency band received by the mobile terminal; And estimating the position of the mobile terminal. 16. The method of claim 15,
Storing a 'speaker identifier-position mapping table' in which a server associates a speaker identifier of each of the plurality of speakers with a position; And
Wherein the server comprises: i) a signal of an audible frequency band received by the mobile terminal in the receiving step, ii) at least one speaker identifier extracted from the i) signal, and iii) And estimating a position of the mobile terminal by referring to the received signal and the 'speaker identifier-position mapping table'. The mobile terminal estimates the position of the mobile terminal Position estimation method. The method of claim 1,
And the speaker identifier has a frequency included in a peripheral band of the audible frequency band. The method of claim 10,
And a speaker identifier assigned to the first speaker and a speaker identifier assigned to the second speaker each have a frequency included in the peripheral band of the audible frequency band. The method of claim 12,
And a speaker identification signal output from each of the speakers has a frequency included in a peripheral band of an audible frequency band. 15. The method of claim 14,
The speaker identification data included in the sound data received by the microphone has a frequency included in the peripheral band of the audible frequency band.

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