WO2021229628A1 - 音源特定装置、音源特定方法、及び音源特定プログラム - Google Patents
音源特定装置、音源特定方法、及び音源特定プログラム Download PDFInfo
- Publication number
- WO2021229628A1 WO2021229628A1 PCT/JP2020/018774 JP2020018774W WO2021229628A1 WO 2021229628 A1 WO2021229628 A1 WO 2021229628A1 JP 2020018774 W JP2020018774 W JP 2020018774W WO 2021229628 A1 WO2021229628 A1 WO 2021229628A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- sound source
- car
- information
- specifying
- sound
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 32
- 238000004364 calculation method Methods 0.000 claims description 47
- 238000003491 array Methods 0.000 claims description 13
- SAZUGELZHZOXHB-UHFFFAOYSA-N acecarbromal Chemical group CCC(Br)(CC)C(=O)NC(=O)NC(C)=O SAZUGELZHZOXHB-UHFFFAOYSA-N 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 11
- 101100268665 Caenorhabditis elegans acc-1 gene Proteins 0.000 description 9
- 238000004891 communication Methods 0.000 description 6
- 101100268668 Caenorhabditis elegans acc-2 gene Proteins 0.000 description 5
- 230000006870 function Effects 0.000 description 5
- 230000001133 acceleration Effects 0.000 description 4
- 238000007476 Maximum Likelihood Methods 0.000 description 2
- 239000002131 composite material Substances 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
- G10L25/00—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00
- G10L25/48—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 specially adapted for particular use
- G10L25/51—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 specially adapted for particular use for comparison or discrimination
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S3/00—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received
- G01S3/80—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received using ultrasonic, sonic or infrasonic waves
- G01S3/802—Systems for determining direction or deviation from predetermined direction
- G01S3/808—Systems for determining direction or deviation from predetermined direction using transducers spaced apart and measuring phase or time difference between signals therefrom, i.e. path-difference systems
- G01S3/8083—Systems for determining direction or deviation from predetermined direction using transducers spaced apart and measuring phase or time difference between signals therefrom, i.e. path-difference systems determining direction of source
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R3/00—Circuits for transducers, loudspeakers or microphones
- H04R3/005—Circuits for transducers, loudspeakers or microphones for combining the signals of two or more microphones
Definitions
- This disclosure relates to a sound source specifying device, a sound source specifying method, and a sound source specifying program.
- Microphones are known. Sound is input to the microphone.
- a technique for estimating the arrival direction of sound has been proposed (see Patent Document 1).
- the sound source position estimation device of Patent Document 1 estimates the arrival direction of sound.
- the purpose of this disclosure is to easily identify the sound source.
- a sound source specifying device obtains sound data indicating the sound in the hoistway where the elevator car moves, information for specifying the position of the car, the position of the microphone array into which the sound is input, and the orientation of the microphone array. Probability density of a plurality of sound source direction candidates based on the microphone array information shown, the acquisition unit for acquiring the sound source identification information which is the information for specifying the sound source of the sound, and the sound data and a predetermined method.
- a calculation unit that calculates a plurality of probability densities indicating each of the above, and calculates a first inverse number that is the inverse of the maximum value of the plurality of probability densities or the inverse of the dispersion value based on the plurality of probability densities.
- the sound source can be easily specified.
- FIG. It is a figure which shows the example of the sound source specifying system of Embodiment 1.
- FIG. It is a figure which shows the specific example in the case where the microphone array of Embodiment 1 is installed on the car.
- FIG. It is a flowchart which shows the flow of recording of the sound of Embodiment 1.
- FIG. It is a flowchart which shows the example of the process which the sound source specifying apparatus of Embodiment 1 performs.
- FIG. (A) and (B) are diagrams showing an example of a plurality of patterns of the second embodiment. It is a figure which shows the functional block which the sound source specifying apparatus of Embodiment 3 has. It is a figure which shows the example of the sound source specific information of Embodiment 3.
- FIG. 1 is a diagram showing an example of a sound source specifying system according to the first embodiment.
- the sound source specifying system includes a sound source specifying device 100, a microphone array 200, an output device 300, and a driving device 400.
- the sound source specifying device 100 is a device that executes a sound source specifying method.
- the sound source specifying device 100 is a device provided in the elevator.
- the microphone array 200 includes a plurality of microphones. In the microphone array 200, the sound data output from each of the plurality of microphones is output in a completely synchronized state. Further, the microphone array 200 may be equipped with a vibration sensor, an image sensor, an acceleration sensor, an angular acceleration sensor, a GPS (Global Positioning System) sensor, or the like. In addition, these sensors may be installed in the vicinity of the microphone array 200.
- a vibration sensor an image sensor
- an acceleration sensor an angular acceleration sensor
- GPS Global Positioning System
- the output device 300 is a display.
- the display is an LCD (Liquid Crystal Display).
- the output device 300 may be a speaker.
- the drive device 400 is a device for moving the sound source specifying device 100.
- the drive device 400 is a motor and a roller. Further, when the user installs the sound source specifying device 100 in the elevator, the sound source specifying system does not include the driving device 400.
- the sound source specifying device 100 includes a processor 101, a volatile storage device 102, a non-volatile storage device 103, and a communication device 104.
- the processor 101 controls the entire sound source specifying device 100.
- the processor 101 is a CPU (Central Processing Unit), a GPU (Graphics Processing Unit), an FPGA (Field Programmable Gate Array), or the like.
- the processor 101 may be a multiprocessor.
- the sound source specifying device 100 may have a processing circuit instead of the processor 101.
- the processing circuit may be a single circuit or a composite circuit.
- the volatile storage device 102 is the main storage device of the sound source specifying device 100.
- the volatile storage device 102 is a RAM (Random Access Memory).
- the non-volatile storage device 103 is an auxiliary storage device of the sound source specifying device 100.
- the non-volatile storage device 103 is a ROM (Read Only Memory), an HDD (Hard Disk Drive), or an SSD (Solid State Drive).
- the volatile storage device 102 and the non-volatile storage device 103 store various data and programs.
- the communication device 104 is a wired LAN (Local Area Network) adapter, a wireless LAN adapter, or a Bluetooth (registered trademark) adapter.
- the communication device 104 may be referred to as a communication interface.
- the communication device 104 communicates with an external device.
- the microphone array 200 is installed in the hoistway of the elevator.
- the microphone array 200 is installed above the cage, below the cage, above the counterweight, or below the counterweight.
- the microphone array 200 is interlocked with the car.
- the car may be referred to as an elevator car.
- the hoistway may be referred to as an elevator hoistway.
- the microphone array 200 may be installed in a pit portion, near a winder, or in a place where the position does not change due to the elevator operation.
- the microphone array 200 may be fixed to the hoistway.
- the microphone array 200 brought by the user may be installed in the hoistway by the user.
- the case where the microphone array 200 is installed on the car will be illustrated.
- FIG. 2 is a diagram showing a specific example when the microphone array of the first embodiment is installed on a car.
- FIG. 2 shows a wall surface 501, a car guide rail 502, a car 503, a car upper guide shoe 504, a car lower guide shoe 505, a counterweight guide rail 506, a counterweight 507, a counterweight upper guide shoe 508, and a counterweight lower guide shoe. 509 is shown.
- the wall surface 501 is a concrete wall surface.
- the car guide rail 502 is a rail for moving the car 503 up and down.
- the upper car guide shoe 504 and the lower car guide shoe 505 are joints between the car guide rail 502 and the car 503.
- the counterweight guide rail 506 is a rail for moving the counterweight 507 up and down.
- the counterweight upper guide shoe 508 and the counterweight lower guide shoe 509 are joints between the counterweight guide rail 506 and the counterweight 507.
- FIG. 3 is a diagram showing a functional block included in the sound source specifying device of the first embodiment.
- the sound source specifying device 100 includes a storage unit 110, an acquisition unit 120, a score calculation unit 130, an accuracy calculation unit 140, an obstacle determination unit 150, a car position identification unit 160, a sound source identification unit 170, and an output unit 180. Further, the acquisition unit 120 and the score calculation unit 130 are included in the calculation unit 10.
- the storage unit 110 may be realized as a storage area secured in the volatile storage device 102 or the non-volatile storage device 103.
- a part or all of the acquisition unit 120, the score calculation unit 130, the accuracy calculation unit 140, the obstacle determination unit 150, the car position identification unit 160, the sound source identification unit 170, and the output unit 180 are realized by the processor 101 or the processing circuit. You may.
- a part or all of the acquisition unit 120, the score calculation unit 130, the accuracy calculation unit 140, the obstacle determination unit 150, the car position identification unit 160, the sound source identification unit 170, and the output unit 180 are programs executed by the processor 101. It may be realized as a module of.
- the program executed by the processor 101 is also referred to as a sound source specifying program.
- the sound source specifying program is recorded on a recording medium.
- the storage unit 110 stores the hoistway layout 111, the microphone array information 112, and the sound source identification information 113.
- the hoistway layout 111 is information indicating the layout of the hoistway.
- the hoistway layout 111 shows a wall surface 501, a car guide rail 502, a car 503, a counterweight guide rail 506, a counterweight 507, a hoist, a pulley, and a door on the landing side of each floor.
- this information is expressed in coordinates.
- the microphone array information 112 indicates the position where the microphone array 200 is installed and the orientation of the microphone array 200.
- the microphone array information 112 indicates that the microphone array 200 is installed on the car 503 and that the front surface of the microphone array 200 is the same as the direction toward the landing side.
- the direction on the landing side is the direction in which the door opens.
- the microphone array information 112 may be created by the user operating the sound source specifying device 100.
- the microphone array information 112 may be created based on the information obtained from the image sensor mounted on the microphone array 200 or the GPS sensor.
- the microphone array information 112 may be created based on the information obtained by using the beacon. Further, the microphone array information 112 may be created as follows.
- the microphone array 200 is equipped with a barometric pressure sensor. Different barometric pressure sensors are installed at the bottom of the hoistway. The microphone array information 112 is created based on the comparison result of the values of the two barometric pressure sensors.
- the sound source identification information 113 is information for specifying the sound source of the sound. Here, the sound source specific information 113 is illustrated.
- FIG. 4 is a diagram showing an example of sound source specific information according to the first embodiment.
- the sound source specific information 113 is stored in the storage unit 110.
- the sound source specific information 113 is created in advance.
- the sound source specific information 113 is No. , Relationship, microphone array position, microphone array orientation, car position, obstacles, and sound source items. For example, No. An identifier is registered in the item of. Further, for example, in the item of obstacle, information indicating whether or not the obstacle exists is registered. The method of using the sound source specific information 113 will be described later.
- the information registered in the sound source specific information 113 is changed when the hoistway layout 111 is changed.
- the acquisition unit 120 acquires sound data.
- the acquisition unit 120 acquires sound data from the microphone array 200.
- the acquisition unit 120 acquires the sound data from the recording medium in which the sound data is recorded.
- the sound source specifying device 100 may be considered as a PC (Personal Computer).
- the sound data is data showing the sound in the hoistway where the elevator car 503 moves. Further, the sound data is sound data of a plurality of channels.
- the acquisition unit 120 acquires the hoistway layout 111, the microphone array information 112, and the sound source identification information 113.
- the acquisition unit 120 acquires the hoistway layout 111, the microphone array information 112, and the sound source identification information 113 from the storage unit 110.
- the hoistway layout 111, the microphone array information 112, and the sound source specifying information 113 may be stored in an external device that can be connected to the sound source specifying device 100.
- the external device is a server.
- the acquisition unit 120 acquires the hoistway layout 111, the microphone array information 112, and the sound source identification information 113 from the external device. do.
- the acquisition unit 120 acquires information for specifying the position of the car 503.
- the information for specifying the position of the car 503 is the information input by the user to the sound source specifying device 100 or the information received by the sound source specifying device 100 from a device such as the microphone array 200. Information for locating the car 503 will be described later.
- the function of the calculation unit 10 will be described using the score calculation unit 130 and the accuracy calculation unit 140.
- the score calculation unit 130 calculates a plurality of scores indicating the scores of the plurality of sound source direction candidates based on the sound data and a predetermined method.
- the predetermined methods include beamforming, delay sum method, maximum likelihood method, minimum variance method, MUSIC (Multiple SIgnal Classification) method, root-MUSIC method, and minimum norm method. Or it is a trained model.
- the predetermined method is the score calculation process shown below.
- the sound source direction candidate may be simply expressed as a direction.
- the score calculation unit 130 calculates a score for each horizontal angle with a preset horizontal resolution. For example, when the resolution in the horizontal direction is 10 degrees and 360 degrees is the target range, the score calculation unit 130 calculates the score in 36 directions. In this way, the score calculation unit 130 calculates the scores in each of the plurality of directions.
- the score is expressed by the probability density.
- the score in each direction is expressed as a decimal so that the total value, which is the total value of the scores in each direction, becomes 1.0. Further, the score indicates the probability that the sound source exists in the direction corresponding to the score.
- the score calculation unit 130 calculates the signal level in each direction using beamforming, delay sum method, maximum likelihood method, minimum variance method, MUSIC method, root-MUSIC method, minimum norm method, or a trained model. can do.
- the score calculation unit 130 calculates the score in each direction using the formula (1) or the formula (2).
- x i denotes a signal level in each direction.
- y i indicates the score in each direction.
- the accuracy calculation unit 140 calculates the variance value Var in the sound source direction.
- the variance value Var may be the maximum value in the score in each direction. Further, the accuracy calculation unit 140 may calculate the variance value Var based on the score in each direction. Specifically, the accuracy calculation unit 140 calculates the variance value Var with reference to y i in the direction of the highest score.
- the accuracy calculation unit 140 calculates the variance value Var using the equation (3).
- d i denotes a horizontal angle. For example, d 0 indicates 0 degrees. Further, for example, d 35 indicates 350 degrees.
- Function Diff (d i, d j) indicates the difference between the horizontal angle d i and the horizontal angle d j. Further, the direction when y i is the largest value is d MAX .
- the function Diff (d 10 , d 20 ) is 10.
- the function Diff (d 10 , d 350 ) is 20.
- the horizontal angle is 0 degrees or 360 degrees. Therefore, the accuracy calculation unit 140 calculates the difference in angle in consideration of the lap.
- the accuracy calculation unit 140 calculates the reciprocal of the variance value Var as the accuracy Acc. Specifically, the accuracy calculation unit 140 calculates the accuracy Acc using the equation (4).
- the calculated accuracy Acc is the reciprocal of the maximum value of the scores in each direction, or the reciprocal of the variance value Var based on the scores in each direction.
- the accuracy Acc is also referred to as the first reciprocal. Further, the accuracy Acc may be expressed as follows. Accuracy Acc is the reciprocal of the standard deviation of the direction of the highest score among the scores in each direction.
- the obstacle determination unit 150 determines whether or not an obstacle exists between the sound source and the microphone array 200 by using the accuracy Acc and the two threshold values.
- the two thresholds are Acc 1 and Acc 2 .
- Acc 1 and Acc 2 are preset values.
- Acc 1 and Acc 2 are stored in the storage unit 110. It should be noted that Acc 2 is larger than Acc 1 (that is, Acc 1 ⁇ Acc 2 ). Further, for example, the obstacle is a car 503 or a counterweight 507.
- the obstacle determination unit 150 determines that the accuracy is low.
- the low accuracy state is a state in which the sound source direction cannot be specified because the sound emitted from the sound source is reflected and diffused by the wall surface 501 or the like.
- the obstacle determination unit 150 determines that the sound source is farther than the microphone array 200. This is because the sound emitted from a distance reflects on the wall surface 501, the sound reaches the microphone array 200 in all directions at almost the same signal level, and the sound reaches the microphone array 200 with a random phase difference. Because it does.
- the obstacle determination unit 150 determines that there is no obstacle between the sound source and the microphone array 200. Further, when “Acc ⁇ Acc 1 ", the obstacle determination unit 150 may determine that an obstacle exists according to the user's setting.
- the obstacle determination unit 150 determines that the accuracy is high to some extent.
- the state in which the accuracy is high to some extent is a state in which the sound emitted from the sound source is input to the microphone array 200 in a state where the sound is limited to some extent by an obstacle.
- the obstacle determination unit 150 acquires the position of the car 503, the position of the counterweight 507, the hoistway layout 111, and the microphone array information 112 specified by the car position specifying unit 160, which will be described later.
- the obstacle determination unit 150 determines that the car 503 exists as an obstacle between the sound source and the microphone array 200.
- the obstacle determination unit 150 determines that an obstacle exists between the sound source and the microphone array 200.
- the obstacle determination unit 150 determines that the accuracy is high.
- the state of high accuracy is a state in which the distance between the sound source and the microphone array 200 is short.
- the obstacle determination unit 150 determines that there is no obstacle between the sound source and the microphone array 200.
- the car position specifying unit 160 specifies the vertical position of the car 503 based on the information for specifying the position of the car 503.
- the information for identifying the position of the car 503 indicates the speed of the car 503 and the moving time of the car 503.
- the initial position of the car 503 is preset.
- the car position specifying unit 160 identifies the position of the car 503 based on the time when the car 503 moves from the initial position (that is, the moving time of the car 503) and the speed of the car 503.
- the information for specifying the position of the car 503 indicates the information obtained from the acceleration sensor and the movement time of the car 503.
- the car position specifying unit 160 may specify the position of the car 503 based on the information obtained from the acceleration sensor and the time. Further, for example, the information for specifying the position of the car 503 is the radio wave strength of the access point of WiFi (registered trademark), the radio wave strength of the beacon of Bluetooth, or the information obtained from the image sensor. The car position specifying unit 160 may specify the position of the car 503 based on the radio wave strength of the access point of WiFi, the radio wave strength of the beacon of Bluetooth, or the information obtained from the image sensor. The car position specifying unit 160 may specify the position of the car 503 by using the prior art.
- the information for specifying the position of the car 503 is the radio wave strength of the access point of WiFi (registered trademark), the radio wave strength of the beacon of Bluetooth, or the information obtained from the image sensor.
- the car position specifying unit 160 may specify the position of the car 503 by using the prior art.
- the car position specifying unit 160 specifies the position of the counterweight 507.
- the car 503 and the counterweight 507 are connected by a rope. Therefore, when the position of the car 503 is specified, the approximate position of the counterweight 507 is specified. However, the positional relationship between the car 503 and the counterweight 507 differs depending on the individual car. Therefore, the hoistway layout 111 is used. Therefore, when specifying the position of the counterweight 507, the car position specifying unit 160 specifies the position of the counterweight 507 based on the position of the car 503 and the hoistway layout 111.
- the sound source specifying unit 170 identifies the sound source by using the sound source specifying information 113.
- the sound source specifying unit 170 was identified by the relationship between the accuracy Acc, the threshold value Acc 1 and the threshold value Acc 2 calculated by the accuracy calculation unit 140, the position and orientation of the microphone array 200 indicated by the microphone array information 112, and the car position specifying unit 160.
- the record that matches the position of the car 503 and the result of the determination by the obstacle determination unit 150 is searched from the sound source identification information 113.
- the information registered in the item of the sound source of the searched record is the sound source. For example, the searched record is No.
- the sound source specifying unit 170 identifies that the device existing above the car 503 is the sound source.
- the device is, for example, a counterweight 507, a guide shoe, a winding machine, and the like.
- the sound source identification information 113 provides information indicating the relationship between the accuracy Acc, the threshold value Acc 1 and the threshold value Acc 2 , the position and orientation of the microphone array 200, the position of the car 503, and whether or not an obstacle exists. Shows. Then, the sound source specifying unit 170 can specify the sound source by using the sound source specifying information 113.
- the sound source identification information 113 does not have to have an obstacle item.
- the sound source identification unit 170 describes the relationship between the accuracy Acc, the threshold Acc 1 and the threshold Acc 2 calculated by the accuracy calculation unit 140, and the microphone indicated by the microphone array information 112.
- a record matching the position and orientation of the array 200 and the position of the car 503 specified by the car position specifying unit 160 is searched from the sound source identification information 113.
- the threshold value Acc 1 or the threshold value Acc 2 indicated by the item related to 5 may be referred to as a first threshold value.
- the threshold value Acc 1 indicated by the item related to 3 may be referred to as a first threshold value.
- the threshold value Acc 2 indicated by the item related to 3 may be referred to as a second threshold value.
- the threshold value Acc 2 indicated by the item related to 5 may be referred to as a second threshold value.
- the sound source identification information 113 may indicate the relationship between the accuracy Acc and the threshold value Acc 1 and the relationship between the accuracy Acc and the threshold value Acc 2. That is, the sound source specific information 113 is No. 2 and No. It does not have to include 3 records.
- the searched record is No. 4 or No.
- the sound source specifying unit 170 identifies that the device existing in the sound source direction is the sound source. In this case, the sound source specifying unit 170 sets the direction corresponding to the maximum value in the score in each direction calculated by the score calculating unit 130 as the sound source direction.
- the sound source specifying unit 170 identifies a sound source from the hoistway layout 111 based on the position, sound source direction, and hoistway layout 111 of the microphone array 200 indicated by the microphone array information 112.
- the output unit 180 outputs information indicating a sound source to the output device 300.
- the output device 300 is a display
- the output unit 180 outputs information indicating a sound source to the display.
- the display displays information indicating the sound source.
- the output unit 180 outputs information indicating a sound source to the speaker.
- the speaker outputs information indicating the sound source by voice.
- the user installs the microphone array 200 in the hoistway.
- the user inputs the position where the microphone array 200 is installed and the orientation of the microphone array 200 to the sound source specifying device 100.
- the sound source specifying device 100 creates the microphone array information 112.
- the preparation for recording the sound is completed. Sound recording will be described using a flowchart.
- FIG. 5 is a flowchart showing the flow of recording the sound of the first embodiment.
- the microphone array 200 starts recording.
- the car 503 moves on the hoistway. Specifically, the car 503 rises or falls. The sound in the hoistway is input to the microphone array 200.
- the microphone array 200 ends recording.
- FIG. 6 is a flowchart showing an example of processing executed by the sound source specifying device of the first embodiment.
- the acquisition unit 120 acquires sound data and the like of the sound recorded by the microphone array 200.
- the score calculation unit 130 calculates scores in each of the plurality of directions using the sound source data.
- the accuracy calculation unit 140 calculates the variance value Var by using the scores of the plurality of sound source direction candidates.
- Step S24 The accuracy calculation unit 140 calculates the accuracy Acc using the variance value Var.
- the car position specifying unit 160 specifies the position of the car 503 by using the information for specifying the position of the car 503.
- the obstacle determination unit 150 determines the existence of an obstacle by using the accuracy Acc, the threshold value Acc 1 and the threshold value Acc 2.
- the sound source specifying unit 170 identifies the sound source by using the sound source specifying information 113.
- Step S28 The output unit 180 outputs information indicating a sound source to the output device 300.
- the sound source specifying device 100 can specify the sound source by using the sound data indicating the sound in the hoistway. Further, the sound source specifying device 100 identifies the sound source by using the sound source specifying information 113 without executing complicated processing. Therefore, the sound source specifying device 100 can easily specify the sound source.
- Embodiment 2 Next, the second embodiment will be described. In the second embodiment, the matters different from the first embodiment will be mainly described. Then, in the second embodiment, the description of the matters common to the first embodiment will be omitted. In the description of the second embodiment, FIGS. 1 to 3 are referred to.
- Embodiment 1 the presence of an obstacle was determined using two thresholds (ie, threshold Acc 1 and threshold Acc 2).
- threshold Acc 1 and threshold Acc 2 the threshold value of an obstacle
- FIG. 7 is a diagram showing a functional block included in the sound source specifying device of the second embodiment.
- the configuration of FIG. 7, which is the same as the configuration shown in FIG. 3, has the same reference numerals as those shown in FIG.
- the sound source specifying device 100a includes a storage unit 110a, an acquisition unit 120a, an accuracy calculation unit 140a, an obstacle determination unit 150a, a sound source specifying unit 170a, and a pattern specifying unit 191.
- the score calculation unit 130 and the accuracy calculation unit 140a are included in the calculation unit 10a.
- the storage unit 110a stores the sound source specific information 113a.
- the sound source specific information 113a is illustrated.
- FIG. 8 is a diagram showing an example of sound source specifying information according to the second embodiment.
- the sound source specifying information 113a is information in which a pattern item is added to the sound source specifying information 113. The pattern will be described later. Further, the information registered in the related item of the sound source specific information 113a and the information registered in the related item of the sound source specific information 113 are different.
- the threshold value Acc 2 registered in the item related to the sound source specific information 113a is also referred to as a first threshold value.
- the score calculation unit 130 calculates the score in each direction.
- the accuracy calculation unit 140a determines whether or not a direction in which a score higher than the average of the scores in each direction exists in a certain section exists in a plurality of directions. The determination will be described with reference to FIGS. 9 and 10.
- FIG. 9 is an example of a horizontal sectional view of the hoistway of the second embodiment.
- FIG. 9 shows a microphone array 200, a car guide rail 502, a counterweight guide rail 506, and a counterweight 507. Further, FIG. 9 shows the front direction of the microphone array 200.
- FIG. 10 is a diagram showing an example of scores in each direction of the second embodiment.
- FIG. 10 shows a score in each direction calculated based on sound data indicating the sound recorded in the state of FIG. 9.
- the solid line shows the score in each direction.
- the dashed line shows the average score in each direction.
- the direction in which a score higher than the average of the scores in each direction exists in a certain section is the back surface.
- the accuracy calculation unit 140a transmits the score in each direction to the obstacle determination unit 150a.
- the obstacle determination unit 150a determines that an obstacle exists between the sound source and the microphone array 200. Further, the pattern specifying unit 191 compares the score in each direction calculated by the score calculating unit 130 with a plurality of patterns of the plurality of scores.
- the plurality of scores are also referred to as a plurality of first probability densities. Here, a plurality of patterns are illustrated.
- FIG. 11 (A) and 11 (B) are diagrams showing an example of a plurality of patterns of the second embodiment.
- FIG. 11A shows pattern 1.
- FIG. 11B is a pattern 2.
- FIG. 11 shows two patterns.
- the number of patterns may be 3 or more.
- a plurality of patterns are stored in the storage unit 110.
- the acquisition unit 120a acquires information indicating a plurality of patterns.
- the pattern specifying unit 191 identifies a pattern that matches the score in each direction calculated by the score calculating unit 130 from the plurality of patterns. For example, the pattern specifying unit 191 determines which pattern the score in each direction calculated by the score calculating unit 130 fits in the patterns 1 and 2. Further, the pattern specifying unit 191 may use the mean square error to determine which pattern the score in each direction calculated by the score calculating unit 130 fits.
- the obstacle determination unit 150a determines that there is no obstacle between the sound source and the microphone array 200. Further, when “Acc 2 ⁇ Acc", the pattern specifying unit 191 does not execute the matching process for the plurality of patterns described above.
- the sound source specifying unit 170a is the relationship between the accuracy Acc calculated by the accuracy calculation unit 140 and the threshold value Acc 2 , the pattern specified by the pattern specifying unit 191, the position and orientation of the microphone array 200 indicated by the microphone array information 112, and the car position specifying unit.
- a record that matches the position of the car 503 specified by 160 and the obstacle determination result by the obstacle determination unit 150a is searched from the sound source identification information 113a.
- the information registered in the item of the sound source of the searched record is the sound source. In this way, the sound source specifying unit 170a can specify the sound source by using the sound source specifying information 113a.
- Acc 1 is not used. Therefore, the user does not have to set the Acc 1. Therefore, according to the second embodiment, the burden on the user is reduced.
- Embodiment 3 Next, the third embodiment will be described.
- the matters different from the first embodiment will be mainly described.
- the description of the matters common to the first embodiment will be omitted.
- FIGS. 1 to 6 are referred to.
- the first and second embodiments a case where one microphone array is used has been described.
- a case where a plurality of microphone arrays are used will be described.
- FIG. 12 is a diagram showing a functional block included in the sound source specifying device of the third embodiment.
- the sound source specifying device 100b is connected to the microphone arrays 200 and 201.
- the microphone array 200 is installed on the car 503.
- the microphone array 201 is installed on the counterweight 507. In FIG. 12, two microphone arrays are illustrated. The number of microphone arrays may be three or more.
- a synchronization signal is input to the microphone arrays 200 and 201. That is, at the time of step S11, a synchronization signal is input to the microphone arrays 200 and 201.
- the sound source specifying device 100b has a storage unit 110b, an acquisition unit 120b, and a synchronization processing unit 192.
- the configuration of FIG. 12, which is the same as the configuration shown in FIG. 3, has the same reference numerals as those shown in FIG.
- the storage unit 110b stores the microphone array information 112b and the sound source identification information 113b.
- the microphone array information 112b indicates the positions of the microphone arrays 200 and 201 and the orientations of the microphone arrays 200 and 201. Next, the sound source specific information 113b will be illustrated.
- FIG. 13 is a diagram showing an example of sound source specific information according to the third embodiment. Items of relationship, microphone array position, microphone array orientation, car position, and obstacles are added to the sound source identification information 113b as many as the number of microphone arrays.
- FIG. 13 shows items such as relationships corresponding to the microphone array 1.
- the microphone array 1 is a microphone array 200. Further, FIG. 13 shows items such as the relationship corresponding to the microphone array 2.
- the microphone array 2 is a microphone array 201.
- the sound source specifying device 100b searches the column of the microphone array 1 for the corresponding line based on the sound data indicating the sound input to the microphone array 200.
- the sound source specifying device 100b searches the column of the microphone array 2 for the corresponding line based on the sound data indicating the sound input to the microphone array 201.
- the information registered in the item of the sound source of the record in which the two lines match is the sound source. In this way, the sound source specifying device 100b identifies the sound source.
- the acquisition unit 120b acquires sound data indicating the sound input to the microphone array 200 and sound data indicating the sound input to the microphone array 201. Further, the acquisition unit 120b acquires the information for specifying the position of the car 503, the microphone array information 112b, and the sound source identification information 113b.
- the synchronization processing unit 192 synchronizes the sound data indicating the sound input to the microphone array 200 and the sound data indicating the sound input to the microphone array 201 with the synchronization signal as a reference.
- the calculation unit 10, the obstacle determination unit 150, and the car position specifying unit 160 execute the same processing as in the first embodiment for each of the plurality of sound data. For example, the calculation unit 10 calculates the accuracy Acc corresponding to each of the two sound data based on the sound data indicating the sound input to the microphone array 200 and the sound data indicating the sound input to the microphone array 201. ..
- Sound source identification unit 170b the relationship between the accuracy Acc and the threshold value Acc 1 and the threshold Acc 2 corresponding to each of the two sound data, the microphone array information 112b, identified by cage position specifying unit 160, the position of the car 503, failure
- the sound source is specified based on the result of the determination by the object determination unit 150 and the sound source identification information 113b.
- the sound source specific information 113b does not have to have an obstacle item.
- the sound source identification unit 170b identifies the sound source without using the result of the determination by the obstacle determination unit 150.
- the sound source specifying device 100b identifies the sound source using the sound data output from the plurality of microphone arrays, so that a more accurate sound source can be specified.
- 10,10a calculation unit 100,100a, 100b sound source identification device, 101 processor, 102 volatile storage device, 103 non-volatile storage device, 104 communication device, 110, 110a, 110b storage unit, 111 hoistway layout, 112, 112b Microphone array information, 113,113a, 113b sound source identification information, 120,120a, 120b acquisition unit, 130 score calculation unit, 140,140a accuracy calculation unit, 150,150a obstacle determination unit, 160 car position identification unit, 170,170a , 170b sound source identification unit, 180 output unit, 191 pattern identification unit, 192 synchronization processing unit, 200, 201 microphone array, 300 output device, 400 drive device, 501 wall surface, 502 car guide rail, 503 car, 504 upper guide shoe, 505 lower guide shoe, 506 counter weight guide rail, 507 counter weight, 508 counter weight upper guide shoe, 509 counter weight lower guide shoe.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Signal Processing (AREA)
- Health & Medical Sciences (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Human Computer Interaction (AREA)
- Audiology, Speech & Language Pathology (AREA)
- Computational Linguistics (AREA)
- Radar, Positioning & Navigation (AREA)
- Otolaryngology (AREA)
- General Physics & Mathematics (AREA)
- General Health & Medical Sciences (AREA)
- Remote Sensing (AREA)
- Circuit For Audible Band Transducer (AREA)
- Stereophonic System (AREA)
- Indicating And Signalling Devices For Elevators (AREA)
- Telephone Function (AREA)
- Electrophonic Musical Instruments (AREA)
Abstract
Description
図1は、実施の形態1の音源特定システムの例を示す図である。音源特定システムは、音源特定装置100とマイクアレイ200と出力装置300と駆動装置400とを含む。
音源特定装置100は、音源特定方法を実行する装置である。例えば、音源特定装置100は、エレベータに備えられている装置である。
音源特定装置100は、プロセッサ101、揮発性記憶装置102、不揮発性記憶装置103、及び通信装置104を有する。
カウンターウェイトガイドレール506は、カウンターウェイト507を上下に移動させるためのレールである。カウンターウェイト上ガイドシュー508とカウンターウェイト下ガイドシュー509は、カウンターウェイトガイドレール506とカウンターウェイト507との接合部である。
図3は、実施の形態1の音源特定装置が有する機能ブロックを示す図である。音源特定装置100は、記憶部110、取得部120、スコア算出部130、精度算出部140、障害物判定部150、かご位置特定部160、音源特定部170、及び出力部180を有する。また、取得部120及びスコア算出部130は、算出部10に含まれる。
取得部120、スコア算出部130、精度算出部140、障害物判定部150、かご位置特定部160、音源特定部170、及び出力部180の一部又は全部は、プロセッサ101又は処理回路によって実現してもよい。また、取得部120、スコア算出部130、精度算出部140、障害物判定部150、かご位置特定部160、音源特定部170、及び出力部180の一部又は全部は、プロセッサ101が実行するプログラムのモジュールとして実現してもよい。例えば、プロセッサ101が実行するプログラムは、音源特定プログラムとも言う。例えば、音源特定プログラムは、記録媒体に記録されている。
昇降路レイアウト111は、昇降路のレイアウトを示す情報である。例えば、昇降路レイアウト111は、壁面501、かごガイドレール502、かご503、カウンターウェイトガイドレール506、カウンターウェイト507、巻き上げ機、滑車、及び各階の乗場側のドアを示す。例えば、これらの情報は、座標で表される。
音源特定情報113の使用方法については、後で説明する。なお、音源特定情報113に登録される情報は、昇降路レイアウト111が変更された場合、変更される。
取得部120は、音データを取得する。例えば、取得部120は、音データをマイクアレイ200から取得する。また、例えば、取得部120は、当該音データが記録されている記録媒体から当該音データを取得する。取得部120が記録媒体から当該音データを取得する場合、音源特定装置100は、PC(Personal Computer)と考えてもよい。
スコア算出部130は、音データと予め決められた方法とに基づいて、複数の音源方向候補のスコアをそれぞれ示す複数のスコアを算出する。例えば、予め決められた方法とは、ビームフォーミング、遅延和法、最尤(Maximum Likelihood)法、最小分散(Minimum Variance)法、MUSIC(MUltiple SIgnal Classification)法、root-MUSIC法、最小ノルム法、又は学習済モデルである。また、予め決められた方法とは、以下に示すスコアの算出処理である。ここで、音源方向候補は、単に、方向と表現する場合がある。
次に、精度算出部140は、分散値Varの逆数を、精度Accとして算出する。詳細には、精度算出部140は、式(4)を用いて、精度Accを算出する。
また、精度Accは、次のように表現してもよい。精度Accは、各方向のスコアの中で、最大のスコアの方向の標準偏差の逆数である。
(ステップS11)マイクアレイ200は、収録を開始する。
(ステップS12)かご503は、昇降路を移動する。詳細には、かご503は、上昇又は降下する。
マイクアレイ200には、昇降路内の音が入力される。
(ステップS13)マイクアレイ200は、収録を終了する。
図6は、実施の形態1の音源特定装置が実行する処理の例を示すフローチャートである。
(ステップS21)取得部120は、マイクアレイ200が収録した音の音データなどを取得する。
(ステップS22)スコア算出部130は、音源データを用いて、複数の方向のそれぞれのスコアを算出する。
(ステップS23)精度算出部140は、複数の音源方向候補のそれぞれのスコアを用いて、分散値Varを算出する。
(ステップS25)かご位置特定部160は、かご503の位置を特定するための情報を用いて、かご503の位置を特定する。
(ステップS26)障害物判定部150は、精度Accと閾値Acc1と閾値Acc2とを用いて、障害物の存在を判定する。
(ステップS27)音源特定部170は、音源特定情報113を用いて、音源を特定する。
(ステップS28)出力部180は、音源を示す情報を出力装置300に出力する。
次に、実施の形態2を説明する。実施の形態2では、実施の形態1と相違する事項を主に説明する。そして、実施の形態2では、実施の形態1と共通する事項の説明を省略する。実施の形態2の説明では、図1~3を参照する。
音源特定装置100aは、記憶部110a、取得部120a、精度算出部140a、障害物判定部150a、音源特定部170a、及びパターン特定部191を有する。スコア算出部130と精度算出部140aは、算出部10aに含まれる。
記憶部110aは、音源特定情報113aを記憶する。ここで、音源特定情報113aを例示する。
また、音源特定情報113aの関係の項目に登録されている情報と音源特定情報113の関係の項目に登録されている情報が、異なる。ここで、音源特定情報113aの関係の項目に登録されている閾値Acc2は、第1の閾値とも言う。
スコア算出部130は、各方向のスコアを算出する。精度算出部140aは、各方向のスコアの平均よりも高いスコアが一定区間存在している方向が複数の方向の中に存在するか否かを判定する。当該判定を、図9及び図10を用いて説明する。
パターン特定部191は、複数のパターンの中から、スコア算出部130が算出した各方向のスコアに適合するパターンを特定する。例えば、パターン特定部191は、パターン1,2のうち、スコア算出部130が算出した各方向のスコアがどのパターンに適合するのかを判定する。また、パターン特定部191は、平均二乗誤差を用いて、スコア算出部130が算出した各方向のスコアがどのパターンに適合するのかを判定してもよい。
次に、実施の形態3を説明する。実施の形態3では、実施の形態1と相違する事項を主に説明する。そして、実施の形態3では、実施の形態1と共通する事項の説明を省略する。実施の形態3の説明では、図1~6を参照する。
実施の形態1,2では、1つのマイクアレイが使用される場合を説明した。実施の形態3では、複数のマイクアレイが使用される場合を説明する。
また、取得部120bは、かご503の位置を特定するための情報、マイクアレイ情報112b、及び音源特定情報113bを取得する。
算出部10、障害物判定部150、及びかご位置特定部160は、複数の音データのそれぞれについて、実施の形態1と同じ処理を実行する。例えば、算出部10は、マイクアレイ200に入力された音を示す音データとマイクアレイ201に入力された音を示す音データに基づいて、2つの音データのそれぞれに対応する精度Accを算出する。
Claims (11)
- エレベータのかごが移動する昇降路内の音を示す音データ、前記かごの位置を特定するための情報、前記音が入力されるマイクアレイの位置と前記マイクアレイの向きとを示すマイクアレイ情報、及び前記音の音源を特定するための情報である音源特定情報を取得する取得部と、
前記音データと予め決められた方法とに基づいて、複数の音源方向候補の確率密度をそれぞれ示す複数の確率密度を算出し、前記複数の確率密度のうちの最大値の逆数又は前記複数の確率密度に基づく分散値の逆数である第1の逆数を算出する算出部と、
前記かごの位置を特定するための情報に基づいて、前記かごの位置を特定するかご位置特定部と、
予め設定された第1の閾値と前記第1の逆数との関係、前記マイクアレイ情報、前記かごの位置、及び前記音源特定情報に基づいて、前記音源を特定する音源特定部と、
を有する音源特定装置。 - 前記第1の閾値と前記第1の逆数との関係に基づいて、前記音源と前記マイクアレイとの間に障害物が存在するか否かを判定する障害物判定部をさらに有し、
前記音源特定部は、前記第1の閾値と前記第1の逆数との関係、前記マイクアレイ情報、前記かごの位置、前記判定の結果、及び前記音源特定情報に基づいて、前記音源を特定する、
請求項1に記載の音源特定装置。 - パターン特定部をさらに有し、
前記取得部は、複数の第1の確率密度の複数のパターンを示す情報を取得し、
前記パターン特定部は、前記複数の確率密度の平均よりも高い確率密度が一定区間存在している音源方向候補が前記複数の音源方向候補の中に存在し、かつ前記第1の逆数が前記第1の閾値よりも小さい場合、前記複数のパターンの中から前記複数の確率密度に適合するパターンを特定し、
前記音源特定部は、前記第1の閾値と前記第1の逆数との関係、特定されたパターン、前記マイクアレイ情報、前記かごの位置、及び前記音源特定情報に基づいて、前記音源を特定する、
請求項1又は2に記載の音源特定装置。 - 前記音源特定部は、前記第1の閾値と予め設定された第2の閾値と前記第1の逆数との関係、前記マイクアレイ情報、前記かごの位置、及び前記音源特定情報に基づいて、前記音源を特定し、
前記第2の閾値は、前記第1の閾値よりも大きい、
請求項1に記載の音源特定装置。 - 前記第1の閾値と前記第2の閾値と前記第1の逆数との関係に基づいて、前記音源と前記マイクアレイとの間に障害物が存在するか否かを判定する障害物判定部をさらに有し、
前記音源特定部は、前記第1の閾値と前記第2の閾値と前記第1の逆数との関係、前記マイクアレイ情報、前記かごの位置、前記判定の結果、及び前記音源特定情報に基づいて、前記音源を特定する、
請求項4に記載の音源特定装置。 - 同期処理部をさらに有し、
前記取得部は、前記音が入力される複数のマイクアレイから出力された複数の音データ、前記かごの位置を特定するための情報、前記複数のマイクアレイの位置と前記複数のマイクアレイの向きとを示す前記マイクアレイ情報、及び前記音源特定情報を取得し、
前記同期処理部は、前記複数の音データを同期させ、
前記算出部は、前記複数の音データに基づいて、前記複数の音データのそれぞれに対応する前記第1の逆数を算出し、
前記音源特定部は、前記複数の音データのそれぞれに対応する前記第1の逆数と前記第1の閾値との関係、前記マイクアレイ情報、前記かごの位置、及び前記音源特定情報に基づいて、前記音源を特定する、
請求項1に記載の音源特定装置。 - 前記音源特定部は、前記複数の音データのそれぞれに対応する前記第1の逆数と前記第1の閾値と予め設定された第2の閾値との関係、前記マイクアレイ情報、前記かごの位置、及び前記音源特定情報に基づいて、前記音源を特定し、
前記第2の閾値は、前記第1の閾値よりも大きい、
請求項6に記載の音源特定装置。 - 前記かごの位置を特定するための情報は、前記かごの速度及び前記かごの移動時間を示し、
前記かご位置特定部は、前記かごの速度及び前記かごの移動時間に基づいて、前記かごの位置を特定する、
請求項1から7のいずれか1項に記載の音源特定装置。 - 前記音源を示す情報を出力する出力部をさらに有する、
請求項1から8のいずれか1項に記載の音源特定装置。 - 音源特定装置が、
エレベータのかごが移動する昇降路内の音を示す音データ、前記かごの位置を特定するための情報、前記音が入力されるマイクアレイの位置と前記マイクアレイの向きとを示すマイクアレイ情報、及び前記音の音源を特定するための情報である音源特定情報を取得し、
前記音データと予め決められた方法とに基づいて、複数の音源方向候補の確率密度をそれぞれ示す複数の確率密度を算出し、
前記複数の確率密度のうちの最大値の逆数又は前記複数の確率密度に基づく分散値の逆数である第1の逆数を算出し、
前記かごの位置を特定するための情報に基づいて、前記かごの位置を特定し、
予め設定された第1の閾値と前記第1の逆数との関係、前記マイクアレイ情報、前記かごの位置、及び前記音源特定情報に基づいて、前記音源を特定する、
音源特定方法。 - 音源特定装置に、
エレベータのかごが移動する昇降路内の音を示す音データ、前記かごの位置を特定するための情報、前記音が入力されるマイクアレイの位置と前記マイクアレイの向きとを示すマイクアレイ情報、及び前記音の音源を特定するための情報である音源特定情報を取得し、
前記音データと予め決められた方法とに基づいて、複数の音源方向候補の確率密度をそれぞれ示す複数の確率密度を算出し、
前記複数の確率密度のうちの最大値の逆数又は前記複数の確率密度に基づく分散値の逆数である第1の逆数を算出し、
前記かごの位置を特定するための情報に基づいて、前記かごの位置を特定し、
予め設定された第1の閾値と前記第1の逆数との関係、前記マイクアレイ情報、前記かごの位置、及び前記音源特定情報に基づいて、前記音源を特定する、
処理を実行させる音源特定プログラム。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020227031976A KR102538142B1 (ko) | 2020-05-11 | 2020-05-11 | 음원 특정 장치, 음원 특정 방법 및 음원 특정 프로그램 |
PCT/JP2020/018774 WO2021229628A1 (ja) | 2020-05-11 | 2020-05-11 | 音源特定装置、音源特定方法、及び音源特定プログラム |
CN202080100590.9A CN115552519A (zh) | 2020-05-11 | 2020-05-11 | 声源确定装置、声源确定方法和声源确定程序 |
JP2022522089A JP7204998B2 (ja) | 2020-05-11 | 2020-05-11 | 音源特定装置、音源特定方法、及び音源特定プログラム |
TW109136102A TWI838587B (zh) | 2020-05-11 | 2020-10-19 | 音源定位裝置、音源定位方法及記錄媒體 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2020/018774 WO2021229628A1 (ja) | 2020-05-11 | 2020-05-11 | 音源特定装置、音源特定方法、及び音源特定プログラム |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2021229628A1 true WO2021229628A1 (ja) | 2021-11-18 |
Family
ID=78525428
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2020/018774 WO2021229628A1 (ja) | 2020-05-11 | 2020-05-11 | 音源特定装置、音源特定方法、及び音源特定プログラム |
Country Status (5)
Country | Link |
---|---|
JP (1) | JP7204998B2 (ja) |
KR (1) | KR102538142B1 (ja) |
CN (1) | CN115552519A (ja) |
TW (1) | TWI838587B (ja) |
WO (1) | WO2021229628A1 (ja) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001278562A (ja) * | 2000-03-31 | 2001-10-10 | Mitsubishi Electric Building Techno Service Co Ltd | エレベータの異常音検出装置及び方法 |
JP2014137226A (ja) * | 2013-01-15 | 2014-07-28 | Advanced Telecommunication Research Institute International | 移動体、音響源マップ作成システムおよび音響源マップ作成方法 |
US20180090138A1 (en) * | 2016-09-28 | 2018-03-29 | Otis Elevator Company | System and method for localization and acoustic voice interface |
US20180257908A1 (en) * | 2015-09-28 | 2018-09-13 | Inventio Ag | Elevator arrangement adapted for determining positions of fixtures at various floors based on sound measurements |
JP2019087986A (ja) * | 2017-09-14 | 2019-06-06 | 富士通株式会社 | 音源方向判定装置、音源方向判定方法、及び音源方向判定プログラム |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH03187986A (ja) * | 1989-12-18 | 1991-08-15 | Mitsubishi Materials Corp | コンクリートパイプの補修方法 |
JP5313496B2 (ja) * | 2004-04-28 | 2013-10-09 | コーニンクレッカ フィリップス エヌ ヴェ | 適応ビームフォーマ、サイドローブキャンセラ、ハンズフリー通話装置 |
JP2010213091A (ja) | 2009-03-11 | 2010-09-24 | Ikegami Tsushinki Co Ltd | 音源位置推定装置 |
JP6569853B2 (ja) * | 2015-07-09 | 2019-09-04 | パナソニックIpマネジメント株式会社 | 指向性制御システム及び音声出力制御方法 |
JP2017032488A (ja) * | 2015-08-05 | 2017-02-09 | 株式会社リコー | 情報処理装置、診断方法、およびプログラム |
CN107396244B (zh) * | 2017-08-15 | 2019-12-24 | 浙江新再灵科技股份有限公司 | 一种基于麦克风阵列的声源定位系统及方法 |
CN110782911A (zh) * | 2018-07-30 | 2020-02-11 | 阿里巴巴集团控股有限公司 | 音频信号处理方法、装置、设备和存储介质 |
CN110875060A (zh) * | 2018-08-31 | 2020-03-10 | 阿里巴巴集团控股有限公司 | 语音信号处理方法、装置、系统、设备和存储介质 |
-
2020
- 2020-05-11 WO PCT/JP2020/018774 patent/WO2021229628A1/ja active Application Filing
- 2020-05-11 KR KR1020227031976A patent/KR102538142B1/ko active IP Right Grant
- 2020-05-11 CN CN202080100590.9A patent/CN115552519A/zh active Pending
- 2020-05-11 JP JP2022522089A patent/JP7204998B2/ja active Active
- 2020-10-19 TW TW109136102A patent/TWI838587B/zh active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001278562A (ja) * | 2000-03-31 | 2001-10-10 | Mitsubishi Electric Building Techno Service Co Ltd | エレベータの異常音検出装置及び方法 |
JP2014137226A (ja) * | 2013-01-15 | 2014-07-28 | Advanced Telecommunication Research Institute International | 移動体、音響源マップ作成システムおよび音響源マップ作成方法 |
US20180257908A1 (en) * | 2015-09-28 | 2018-09-13 | Inventio Ag | Elevator arrangement adapted for determining positions of fixtures at various floors based on sound measurements |
US20180090138A1 (en) * | 2016-09-28 | 2018-03-29 | Otis Elevator Company | System and method for localization and acoustic voice interface |
JP2019087986A (ja) * | 2017-09-14 | 2019-06-06 | 富士通株式会社 | 音源方向判定装置、音源方向判定方法、及び音源方向判定プログラム |
Also Published As
Publication number | Publication date |
---|---|
JPWO2021229628A1 (ja) | 2021-11-18 |
CN115552519A (zh) | 2022-12-30 |
TWI838587B (zh) | 2024-04-11 |
JP7204998B2 (ja) | 2023-01-16 |
KR20220130265A (ko) | 2022-09-26 |
KR102538142B1 (ko) | 2023-05-30 |
TW202143218A (zh) | 2021-11-16 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US9726504B2 (en) | Computing system with structure vertical-tier mechanism and method of operation thereof | |
US11216951B2 (en) | Method and apparatus for representing environmental elements, system, and vehicle/robot | |
US12014533B2 (en) | Methods and systems for real or near real-time point cloud map data confidence evaluation | |
US8045418B2 (en) | Position detecting device, autonomous mobile device, method, and computer program product | |
US20220113366A1 (en) | Method and system for tracking a mobile device | |
CN103858497A (zh) | 用于提供基于位置的信息的方法和设备 | |
US11372408B1 (en) | Dynamic trajectory-based orientation of autonomous mobile device component | |
WO2018221455A1 (ja) | 更新装置、制御方法、プログラム及び記憶媒体 | |
WO2019237319A1 (en) | Incremental segmentation of point cloud | |
WO2018221454A1 (ja) | 地図作成装置、制御方法、プログラム及び記憶媒体 | |
JP6294542B1 (ja) | 推定装置、推定方法及び推定プログラム | |
US20200264005A1 (en) | Electronic apparatus and controlling method thereof | |
US11274930B1 (en) | System for assessing an autonomously determined map | |
WO2021229628A1 (ja) | 音源特定装置、音源特定方法、及び音源特定プログラム | |
US11520332B1 (en) | System for automated exploration by an autonomous mobile device using markers based on image features | |
US12038287B2 (en) | Automatic egress/ingress detection in an acoustic positioning system | |
US11442463B1 (en) | System to determine stationary features by autonomous mobile device | |
KR102516005B1 (ko) | 실내 측위 조사로봇을 활용한 건물 붕괴 위험성 평가 방법 및 장치 | |
US12002458B1 (en) | Autonomously motile device with command processing | |
WO2022118367A1 (ja) | 音源方向推定装置、プログラム及び音源方向推定方法 | |
US11912304B1 (en) | System to maintain a dock location of an autonomous mobile device | |
CN118270611B (zh) | 一种基于语音信息的电梯控制方法及系统 | |
US11803188B1 (en) | System for docking an autonomous mobile device using inductive sensors |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 20935244 Country of ref document: EP Kind code of ref document: A1 |
|
ENP | Entry into the national phase |
Ref document number: 2022522089 Country of ref document: JP Kind code of ref document: A |
|
ENP | Entry into the national phase |
Ref document number: 20227031976 Country of ref document: KR Kind code of ref document: A |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 20935244 Country of ref document: EP Kind code of ref document: A1 |