WO2015151130A1 - Appareil de traitement du son, système de traitement du son, procédé de traitement du son - Google Patents

Appareil de traitement du son, système de traitement du son, procédé de traitement du son Download PDF

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Publication number
WO2015151130A1
WO2015151130A1 PCT/JP2014/001898 JP2014001898W WO2015151130A1 WO 2015151130 A1 WO2015151130 A1 WO 2015151130A1 JP 2014001898 W JP2014001898 W JP 2014001898W WO 2015151130 A1 WO2015151130 A1 WO 2015151130A1
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WIPO (PCT)
Prior art keywords
sound
unit
data
audio
predetermined
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Application number
PCT/JP2014/001898
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English (en)
Japanese (ja)
Inventor
岸本　倫典
泰章 渡邊
高桑　誠
中村　学
秀樹 首藤
田村　健二
龍次 山崎
寛夫 齊藤
明寛 秋山
Original Assignee
パナソニックＩｐマネジメント株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by パナソニックＩｐマネジメント株式会社 filed Critical パナソニックＩｐマネジメント株式会社
Priority to CN201480044954.0A priority Critical patent/CN105474665A/zh
Priority to PCT/JP2014/001898 priority patent/WO2015151130A1/fr
Priority to JP2015526798A priority patent/JPWO2015151130A1/ja
Publication of WO2015151130A1 publication Critical patent/WO2015151130A1/fr

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    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/32—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only
    • H04R1/40—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers
    • H04R1/406—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers microphones
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2201/00—Details of transducers, loudspeakers or microphones covered by H04R1/00 but not provided for in any of its subgroups
    • H04R2201/40—Details of arrangements for obtaining desired directional characteristic by combining a number of identical transducers covered by H04R1/40 but not provided for in any of its subgroups
    • H04R2201/401—2D or 3D arrays of transducers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2499/00—Aspects covered by H04R or H04S not otherwise provided for in their subgroups
    • H04R2499/10—General applications
    • H04R2499/15—Transducers incorporated in visual displaying devices, e.g. televisions, computer displays, laptops

Definitions

  • the present invention relates to a voice processing device, a voice processing system, and a voice processing method.
  • a monitoring system is used to monitor the situation of a factory, a store, or a public place in a specific room or a remote place.
  • the monitoring system includes, for example, a camera that picks up an image, a microphone that picks up sound, and a recorder device that stores predetermined data (for example, picked-up images and picked-up sound).
  • predetermined data for example, picked-up images and picked-up sound.
  • a system for an omnidirectional camera and a microphone array is known.
  • This system uses an array microphone formed by a plurality of microphones, extracts only sound from a specific direction by filtering, and forms a beam (see, for example, Patent Document 1).
  • the audio data collected using the array microphone may contain various useful information.
  • the use of audio data and image data is insufficient, and it is expected to improve the convenience of users who use the monitoring system.
  • the present invention has been made in view of the above circumstances, and provides an audio processing device, an audio processing system, and an audio processing method that can promote the utilization of audio data and image data and improve convenience.
  • An audio processing apparatus includes a data acquisition unit that acquires audio data collected by a sound collection unit including a plurality of microphones and image data captured by an imaging unit, and a display based on the image data.
  • a voice signal in the audio data in a plurality of directions designated by the designation unit and a plurality of directions designated by the designation unit corresponding to a designated place on the image to be specified.
  • a directivity processing unit is included in a data acquisition unit that acquires audio data collected by a sound collection unit including a plurality of microphones and image data captured by an imaging unit, and a display based on the image data.
  • a voice signal in the audio data in a plurality of directions designated by the designation unit and a plurality of directions designated by the designation unit corresponding to a designated place on the image to be specified.
  • a sound processing system including a sound collection device including a sound collection unit that collects sound using a plurality of microphones, an image pickup device including an image pickup unit that picks up an image, and the sound collection unit.
  • An audio processing device that processes the collected audio data, and the audio processing device acquires the audio data picked up by the sound pickup unit and the image data picked up by the image pickup unit Corresponding to a designated location on the image displayed based on the image data, a designation unit that designates a plurality of directions with reference to the sound collection unit, and a plurality of directions designated by the designation unit, A directivity processing unit that emphasizes a voice component in the voice data.
  • an audio processing method comprising: acquiring audio data collected by a sound collection unit including a plurality of microphones; and image data captured by an imaging unit; Designating a plurality of directions based on the sound collection unit corresponding to a designated location on the image displayed based on the step, emphasizing audio components in the audio data in the designated directions, Have
  • FIG. 1 The block diagram which shows the structural example of the monitoring system in 1st Embodiment.
  • the top view which shows an example of the arrangement
  • the flowchart which shows the operation example of the monitoring control apparatus in 1st Embodiment.
  • Overview diagram of directivity processing in the first embodiment Overview diagram of monitoring system in second embodiment
  • the block diagram which shows the structural example of the monitoring system in 2nd Embodiment.
  • the flowchart which shows the operation example of the monitoring control apparatus in 2nd Embodiment.
  • FIG. 1 is a schematic diagram of a monitoring system 100 according to the first embodiment.
  • an array microphone 10 Array microphones
  • a camera 20 a monitoring control device 30 are connected via a wired or wireless network 50.
  • the array microphone 10 is an example of a sound collection unit and a sound collection device.
  • the camera 20 is an example of an imaging unit and an imaging device.
  • the monitoring control device 30 is an example of a voice processing device.
  • the monitoring system 100 is an example of a voice processing system.
  • the array microphone 10 includes a plurality of microphones 11 (11A, 11B, 11C,...), Collects sounds around the array microphone 10, and obtains audio data.
  • the camera 20 captures a predetermined area that can be captured by the camera 20 and obtains image data.
  • the image data includes, for example, a moving image or a still image.
  • the monitoring control device 30 performs various processes related to monitoring according to the sound collection result by the array microphone 10 and the imaging result by the camera 20.
  • one camera 20 and 16 microphones 11 (11A, 11B, 11C,...) Included in the array microphone 10 are integrally incorporated in the unit housing 91 and stored.
  • a sound unit 90 is formed. Note that the number of microphones in the array microphone 10 may be 15 or less, or 17 or more. Further, the array microphone 10 and the camera 20 may be formed separately without forming the sound collection unit 90.
  • the camera 20 is disposed, for example, in a substantially central portion of the unit casing 91 with the center in the imaging direction (optical axis direction) vertically downward.
  • the plurality of microphones 11 are arranged at a constant interval on one circumference so as to surround the periphery of the camera 20 along the installation surface of the unit housing 91.
  • the plurality of microphones 11 may be arranged not on the circumference but on a rectangle, for example.
  • the arrangement relationship and arrangement shape of the camera 20 and the plurality of microphones 11 are examples, and other arrangement relationships and arrangement shapes may be used.
  • the camera 20 is configured to be able to simultaneously image a wide range (for example, omnidirectional) subjects, for example.
  • Each microphone 11 is configured to be able to detect sound waves coming from a wide range (for example, all directions), for example.
  • FIG. 2 is a block diagram illustrating a configuration example of the monitoring system 100.
  • the monitoring system 100 includes an array microphone 10, a camera 20, and a monitoring control device 30.
  • the array microphone 10, the camera 20, and the monitoring control device 30 are connected via a network 50 in a state where data communication is possible. Further, for example, a monitor 61, a touch panel 62, and a speaker 63 are connected to the monitoring control device 30.
  • FIG. 2 The configuration of FIG. 2 is assumed, for example, when the image and sound are monitored in real time, and the image data and sound data are recorded by the monitoring control device 30.
  • the image data may be recorded by the camera 20, the audio data may be recorded by the array microphone 10, and the image data and audio data may be referred to after recording.
  • the microphones other than the three microphones 11A to 11C have the same configuration and function as the microphones 11A to 11C.
  • the array microphone 10 is formed by regularly arranging a plurality of microphones 11A, 11B, and 11C in a close proximity to each other (for example, on the circumference).
  • the microphones 11A to 11C are converters that convert sound into electrical signals (sound data).
  • the plurality of microphones 11A, 11B, and 11C may not be regularly arranged. Even in this case, for example, information on the positions of the microphones 11A to 11C may be held in the monitoring system 100 and subjected to directivity processing.
  • the amplifiers 12A to 12C, A / D converters (ADC: Analog to Digital Converter) 13A to 13C, and audio encoders 14A to 14C are connected to the outputs of the microphones 11A to 11C.
  • a network processing unit 15 is connected to the outputs of the audio encoders 14A to 14C.
  • the microphones 11A to 11C generate audio data corresponding to acoustic vibrations input from various directions.
  • This audio data is analog audio data.
  • the amplifiers 12A to 12C amplify audio data output from the microphones 11A to 11C.
  • the A / D converters (ADC) 13A to 13C periodically sample the audio data output from the amplifiers 12A to 12C, and convert the audio data into digital data.
  • the audio encoders 14A to 14C encode the audio data (the time series change of the waveform of the audio data) output from the A / D converters 13A to 13C, and generate audio data in a predetermined format suitable for transmission.
  • the “voice” in the present embodiment may include, for example, a general acoustic or noise component generated by mechanical vibration, in addition to voice obtained by human speech.
  • “voice” may include, for example, voice other than the voice to be monitored. That is, the acoustic signal collected by the microphones 11A to 11C may be described as “voice” without distinguishing the type of acoustic.
  • the network processing unit 15 acquires the voice data generated by the voice encoders 14A to 14C and sends the voice data to the network 50.
  • the audio encoders 14A to 14C generate independent audio data for the audio collected by the microphones 11A to 11C. Therefore, the network processing unit 15 sends the audio data of a plurality of channels corresponding to the microphones 11A to 11C to the network 50.
  • the camera 20 includes a lens 21, a sensor 22, an image encoder 23, and a network processing unit 24.
  • the lens 21 is, for example, an omnidirectional lens or a fisheye lens.
  • the sensor 22 is an imaging device and includes, for example, a CCD (Charge Coupled Device) image sensor and a CMOS (Complementary Metal Oxide Semiconductor) image sensor.
  • the sensor 22 generates image data according to the light image of the subject that is incident on the imaging surface of the sensor 22 via the lens 21.
  • the image encoder 23 sequentially processes the image data output from the sensor 22 and generates image data conforming to a predetermined standard.
  • the network processing unit 24 sends the image data generated by the image encoder 23 to the network 50.
  • the monitoring control device 30 is, for example, a PC (Personal Computer).
  • the monitoring control device 30 includes, for example, a CPU (Central Processing Unit) or a DSP (Digital Signal Processor).
  • the monitoring control device 30 includes, for example, a ROM (Read Only Memory) or a RAM (Random Access Memory).
  • the monitoring control device 30 realizes various functions by executing a control program (for example, an application program or an active X format program) recorded in the ROM or RAM by the CPU or the DSP, for example.
  • a control program for example, an application program or an active X format program
  • the ROM or RAM forms a memory (not shown).
  • the monitoring control device 30 includes a network processing unit 31, an image decoder 32, an image output unit 33, an image recognition unit 34, a collected sound coordinate designation unit 35, an audio decoder 36, and a directivity processing unit 37.
  • the monitoring control device 30 includes a sound collection angle calculation unit 38, a detection unit 39, a sound source estimation unit 40, a voice synthesis unit 41, a voice output unit 42, and a data recording unit 43.
  • the network processing unit 31 performs data communication with the array microphone 10 and the camera 20 via the network 50. Through the data communication, the network processing unit 31 acquires audio data of a plurality of channels from the array microphone 10 and acquires image data from the camera 20.
  • the network processing unit 31 is an example of a data acquisition unit.
  • the network processing unit 31 may directly acquire the audio data transmitted from the array microphone 10 and the image data transmitted from the camera 20 from the array microphone 10 and the camera 20.
  • the network processing unit 31 may read out and acquire audio data or image data (at least audio data) recorded in the data recording unit 43 from the data recording unit 43 at an arbitrary time.
  • the network processing unit 31 may cause the data recording unit 43 to record audio data or image data directly acquired from the array microphone 10 and the camera 20 at an arbitrary time.
  • the image decoder 32 decodes the image data from the network processing unit 31 and generates reproducible image data.
  • the image output unit 33 converts the image data from the image decoder 32 into image data in a format that can be displayed on the monitor 61, and sends the image data to the monitor 61. Further, the image output unit 33 may control display on the monitor 61. The image output unit 33 may send image data corresponding to the detection information from the detection unit 39 to the monitor 61.
  • the monitor 61 displays various image data.
  • the monitor 61 displays an image according to the image data from the image output unit 33, for example.
  • an image captured by the camera 20 is displayed on the monitor 61.
  • the monitor 61 is an example of a presentation unit.
  • the image recognition unit 34 performs predetermined image processing on the image data from the image output unit 33, and recognizes, for example, whether or not the images match various patterns registered in advance in a memory (not shown). May be. For example, pattern matching processing is executed, and a pattern similar to a predetermined person or a predetermined person's face is extracted from various objects included in the image. A pattern of an object other than a person may be extracted.
  • the image recognition unit 34 may identify, for example, the type of object (for example, a person, a man, or a woman) included in the image data. Further, the image recognition unit 34 may have a VMD (Video Motion Detector) function and detect the presence or absence of motion in the image data.
  • VMD Video Motion Detector
  • the sound pickup coordinate designating unit 35 receives a plurality of inputs from the touch panel 62 or the image recognition unit 34, for example, and derives a plurality of coordinates corresponding to the input position or the input range. For example, in the image displayed on the screen of the monitor 61, the coordinates of a plurality of positions (for example, reference numerals P1 and P2 in FIG. 1) to be noted by the operator 60 are received as a plurality of sound collecting coordinates (x, y). .
  • the sound collection coordinate designating unit 35 designates a plurality of directions based on the sound collection unit (for example, the array microphone 10) corresponding to a designated portion (for example, sound collection coordinates) on the image displayed based on the image data. It is an example of a part.
  • the operator 60 operates the touch panel 62 while watching the monitor 61, for example.
  • the operator 60 moves the position of a pointer (not shown) displayed on the screen in accordance with a moving operation (for example, a drag operation) on the touch panel 62, so that the sound pickup coordinates can be changed in the display range on the screen.
  • a moving operation for example, a drag operation
  • the operator 60 touches the touch panel 62, the coordinates of the pointer are given to the sound collection coordinate designating unit 35 as sound collection coordinates.
  • the operator 60 is an example of a monitor who monitors using the monitoring system 100.
  • the sound pickup coordinates may be designated using an input means other than the touch panel 62.
  • a mouse may be connected to the monitoring control device, and the operator 60 may touch a desired image range using the mouse.
  • the image recognition unit 34 recognizes that a pre-registered pattern is included in the image data
  • the image recognition unit 34 has a plurality of positions (for example, symbols P1 and P2 in FIG. 1) on the monitor 61 where the recognized pattern exists.
  • the coordinates may be given to the sound collecting coordinate designating unit 35 as sound collecting coordinates.
  • the recognized pattern is, for example, the entire person or the face of the person.
  • the audio decoder 36 receives and decodes multiple channels of audio data from the network processing unit 15.
  • audio decoders that process audio data of a plurality of channels may be provided independently. In this case, multiple channels of audio data collected by each of the microphones 11A to 11C of the array microphone 10 can be processed simultaneously.
  • the sound collection angle calculation unit 38 derives (for example, calculates) the sound collection angle ⁇ that represents the directionality of the array microphone 10 based on the sound collection coordinates determined by the sound collection coordinate designating unit 35.
  • the sound collection angle ⁇ derived by the sound collection angle calculation unit 38 is input as a parameter of the directivity processing unit 37.
  • the sound collection coordinates and the sound collection angle ⁇ correspond one-to-one, and a conversion table including the correspondence information may be stored in a memory (not shown).
  • the sound collection angle calculation unit 38 may derive the sound collection angle ⁇ with reference to this conversion table.
  • the directivity processing unit 37 acquires information on the sound collection angle ⁇ from the sound collection angle calculation unit 38 and sound data from the sound decoder 36.
  • the directivity processing unit 37 synthesizes audio data of a plurality of channels output from the audio decoder 36 according to a sound collection angle ⁇ according to a predetermined algorithm to form directivity (directivity processing).
  • the directivity processing unit 37 increases the signal level of the sound component in the direction (directivity direction) of the place (attention point) where the person to be monitored exists, and decreases the signal level of the sound component in the other direction. .
  • the directivity processing unit 37 outputs the plurality of sound data subjected to directivity processing to the detection unit 39 and the speech synthesis unit 41.
  • the directivity processing unit 37 may perform directivity processing according to the position of the sound source (for example, a monitoring target person or abnormal sound) estimated by the sound source estimation unit 40.
  • the directivity processing unit 37 may acquire, for example, information on the estimated position of the sound source from the sound source estimation unit 40 a plurality of times, and change (for example, switch) the directionality of the directivity each time it is acquired. Thereby, even when the sound source moves, the position of the sound source can be tracked and monitored. That is, in tracking the position of the sound source, directivity is directed to the estimated position of the sound source.
  • the detecting unit 39 acquires a plurality of audio data that has been subjected to the directivity processing by the directivity processing unit 37.
  • the audio data includes, for example, first audio data in which the audio component in the first directivity direction is emphasized and second audio data in which the audio component in the second directivity direction is emphasized.
  • the detection unit 39 detects a monitoring target sound (an example of a predetermined sound) from at least one of the plurality of acquired sound data. That is, the detection unit 39 has a function as a sound detection unit.
  • the enhancement of the sound component is, for example, using an array microphone formed by a plurality of microphones and extracting only sound from a specific direction by filtering.
  • the detection unit 39 performs various processes when the monitoring target sound is detected. Details of the detection unit 39 will be described later.
  • the detection unit 39 is an example of a processing unit that performs a predetermined process when a monitoring target sound is detected.
  • the sound source estimation unit 40 acquires the audio data from the audio decoder 36 and estimates the position of the sound source that emits the monitoring target sound detected by the detection unit 39.
  • the sound source is, for example, a person who is talking, a person who makes a sound, a specific person (male, female), an object (for example, an emergency vehicle), a source of abnormal sound (for example, an emergency bell, a siren), or a specific environment Includes a wide range of sound sources and other sound sources.
  • the sound source estimation unit 40 is an example of an estimation unit.
  • the sound source estimation unit 40 estimates the position of the sound source by, for example, a known sound source estimation technique.
  • the estimation result of the position of the sound source by the sound source estimation unit 40 is used, for example, for tracking abnormal sound and switching directivity by the directivity processing unit 37.
  • the sound source estimation unit 40 may output the estimation result of the position of the sound source to the image output unit 33 or the audio output unit 42, for example.
  • the image output unit 33 or the audio output unit 42 presents the estimation result of the position of the sound source, so that the operator 60 can easily grasp the position of the sound source.
  • the voice synthesizer 41 acquires a plurality of voice data subjected to directivity processing from the directivity processor 37 and synthesizes the plurality of voice data.
  • the voice synthesizer 41 may synthesize voice data by simply adding the signal levels of a plurality of acquired voice data, and output the synthesized voice data to the voice output unit 42.
  • the voice synthesizer 41 has, for example, a voice switch, selects voice data having a signal level of voice data equal to or higher than a predetermined level or voice data having the maximum signal level, and passes the selected voice data to the voice output unit 42. Good.
  • the audio output unit 42 converts, for example, audio data from the audio synthesis unit 41 from digital audio data to analog audio data, amplifies the audio data, and supplies the amplified audio data to the speaker 63.
  • Speaker 63 outputs a sound corresponding to the audio data from the audio output unit 42. Therefore, the operator 60 can listen to the sound obtained by processing the audio data collected by the array microphone 10 from the speaker 63.
  • the speaker 63 is an example of a presentation unit.
  • the data recording unit 43 includes, for example, an HDD (Hard Disk Drive) and an SSD (Solid State Drive), and may sequentially record audio data or image data of a plurality of channels acquired by the network processing unit 31.
  • the data recording unit 43 records the generation time of the audio data and the generation time of the image data in association with each other.
  • the generation time information may be recorded together with audio data or image data.
  • the data recording unit 43 may be provided inside the monitoring control device 30 or may be provided as an external recording medium outside the monitoring control device 30.
  • the data recording unit 43 records information on a search tag for searching for recorded audio data or image data, for example.
  • the search tag recorded in the data recording unit 43 is appropriately referred to by other components in the monitoring control device 30.
  • the detecting unit 39 detects the sound data as the monitoring target sound.
  • the threshold information to be compared with the signal level of the audio data is held in a memory (not shown), for example.
  • the signal level of the audio data is equal to or lower than the second predetermined threshold, for example, there is a case where an operating sound of the machine is generated, but this machine stops and the operating sound disappears.
  • the detecting unit 39 detects, for example, an abnormal sound included in the sound data subjected to directivity processing as a monitoring target sound.
  • an abnormal sound pattern is stored in a memory (not shown), and the detection unit 39 detects the abnormal sound when the sound data includes the abnormal sound pattern.
  • the detecting unit 39 detects, for example, a predetermined keyword included in the sound data subjected to directivity processing as the monitoring target sound.
  • keyword information is stored in a memory (not shown), and the detection unit 39 detects the keyword when the voice data includes the keyword recorded in the memory.
  • a keyword for example, a known voice recognition technique may be used. In this case, the detection unit 39 has a known voice recognition function.
  • the monitoring target sound may be set in advance.
  • the detection unit 39 may set at least one of a sound whose signal level is equal to or higher than a first predetermined threshold value or lower than a second predetermined threshold value, an abnormal sound, and a keyword as the monitoring target sound.
  • This setting information is stored in a memory (not shown), for example.
  • the detection unit 39 When detecting the monitoring target sound, the detection unit 39 sends information indicating that the monitoring target sound has been detected (detection information) to at least one of the image output unit 33 and the audio output unit 42.
  • the detection information includes, for example, an abnormal sound, a sound having a signal level equal to or higher than a first predetermined threshold or lower than a second predetermined threshold, and warning information (alarm) indicating that a predetermined keyword has been detected.
  • the detection unit 39 when detecting the monitoring target sound, sends predetermined information to the data recording unit 43.
  • the detection unit 39 may send information about the search tag to the data recording unit 43 and hold it.
  • the search tag is a tag for searching the data recording unit 43 for audio data including the monitoring target sound or image data corresponding to the audio data.
  • the search tag may be recorded in the data recording unit 43 at the same timing as, for example, audio data or image data acquired in real time.
  • the search tag may be recorded in the data recording unit 43 in association with, for example, audio data or image data already recorded in the data recording unit 43.
  • the image decoder 32 or the audio decoder 36 records the audio data or image data recorded in the data recording unit 43.
  • data that matches or corresponds to the search tag is searched and acquired. Therefore, for example, even when audio data or image data is recorded or recorded for a long time, the search time can be shortened.
  • the operator 60 may select a specific search tag from a list in which a plurality of search tags are arranged in time series, for example, via the touch panel 62.
  • the operator 60 may select specific search tags in order from the search tag having the oldest generation time or the latest generation time.
  • the operator 60 may select, as a specific search tag, a search tag generated at a time corresponding to a time measured by a clock unit (not shown) via the touch panel 62, for example.
  • the image decoder 32 or the audio decoder 36 searches for and acquires data that matches or corresponds to the specific search tag from the audio data or image data recorded in the data recording unit 43.
  • the list is recorded in the data recording unit 43, for example.
  • the search tag includes, for example, information on the time when the monitoring target sound is detected by the detection unit 39.
  • the search tag includes, for example, information on the direction (directivity direction) of the sound source in which the monitoring target sound is generated.
  • the search tag includes, for example, information on the type of sound to be monitored (abnormal sound, sound including a keyword, sound having a signal level equal to or higher than a predetermined threshold or lower than a predetermined threshold).
  • the type of sound is determined by the detection unit 39 using a known voice recognition technique, for example.
  • the search tag includes, for example, information on the presence / absence or direction of movement of the sound source of the monitoring target sound detected by the VMD function.
  • the sound source from which the presence / absence of motion is detected is included in, for example, image data captured by the camera 20 at the time or time when the monitoring target sound is generated.
  • the information detected by the VMD function is sent from the image recognition unit 34 to the detection unit 39 every time motion is detected, for example.
  • the search tag includes, for example, information on the type of sound source of the monitoring target sound recognized by the image recognition unit 34.
  • the image data in which the type of the sound source is recognized is, for example, image data captured by the camera 20 at the generation time or generation time zone of the monitoring target sound.
  • Information on the type of the sound source is sent from the image recognition unit 34 to the detection unit 39.
  • the search tag includes, for example, a thumbnail image (still image).
  • the thumbnail image is, for example, at least a part of the image data captured by the camera 20 at the generation time or generation time zone of the monitoring target sound.
  • the thumbnail image is sent from the image recognition unit 34 to the detection unit 39.
  • the detecting unit 39 may start recording or recording audio data or image data received by the network processing unit 31 when detecting the monitoring target sound.
  • the network processing unit 31 temporarily stores audio data or image data for a predetermined period (for example, 30 seconds), and when the detection target sound is not detected by the detection unit 39, the network processing unit 31 Discard the image data.
  • the detection unit 39 instructs the network processing unit 31 to record the audio data or the image data in the data recording unit 43 including the audio data or the image data that is temporarily stored. Control (pre-recording, pre-recording).
  • the data recording unit 43 records audio data or image data from the network processing unit 31. Pre-recording and pre-recording may be terminated after a predetermined time has elapsed.
  • the detection unit 39 may delete the voice data including the keyword without recording it in the data recording unit 43.
  • the detection unit 39 may delete the portion of the keyword from the sound data, or may replace it with a sound other than the keyword.
  • the detection unit 39 may cause the data recording unit 43 to record voice data from which the keyword portion has been deleted or replaced. Thereby, confidential information and privacy can be protected when the keyword is information to be concealed.
  • Such processing related to keyword deletion or replacement is also referred to as “keyword processing”.
  • the keyword processing may be performed on the audio data recorded in the data recording unit 43.
  • the detecting unit 39 may instruct the directivity processing unit 37 to switch the direction of directivity when the monitoring target sound is detected.
  • the directivity processing unit 37 may switch the directivity direction to a predetermined direction. For example, information on a plurality of points (point A, point B) included in the imageable range of the camera 20 is registered in advance in a memory (not shown).
  • the directivity processing unit 37 may switch the directivity direction from the direction of the point A to a direction other than the point A (for example, the point B).
  • the detection unit 39 may record voice data including the keyword in the data recording unit 43.
  • This recording may include pre-recording and pre-recording.
  • FIG. 3 is a schematic diagram illustrating an example of an arrangement state of the array microphone 10, the camera 20, and each sound source.
  • the sound collection unit 90 is fixed to the indoor ceiling surface 101.
  • the plurality of microphones 11A to 11C included in the array microphone 10 are arranged along the ceiling surface 101 (installation surface of the sound collection unit 90).
  • Reference sign PA indicates a sound source.
  • the sound collection unit 90 is attached to the ceiling surface 101 so that the reference direction of the array microphone 10 and the reference direction (for example, the optical axis direction) of the camera 20 coincide.
  • the horizontal direction and the vertical direction with respect to the reference direction of the array microphone 10 coincide with the horizontal direction and the vertical direction with respect to the reference direction of the camera 20.
  • the horizontal direction is the x-axis direction and the y-axis direction
  • the vertical direction is the z-axis direction.
  • the reference direction of the array microphone 10 is, for example, the arrangement direction in which the microphones 11 in the array microphone 10 are arranged.
  • the sound collection angle ⁇ is an angle formed by the reference direction of the array microphone 10 and the directivity direction.
  • the horizontal component of the sound collection angle ⁇ formed by the reference direction of the array microphone 10 and the directivity direction is the horizontal angle ⁇ h.
  • the vertical component of the sound collection angle ⁇ formed by the reference direction of the array microphone 10 and the vertical direction of directivity is the vertical angle ⁇ v.
  • the horizontal direction along the arrangement plane (xy plane) can be in any direction.
  • the frequency characteristics of audio data are the same. Therefore, in the example of FIG. 3, the sound collection angle ⁇ substantially depends on the vertical angle ⁇ v. Therefore, in the following description, the description will be made mainly without considering the horizontal angle ⁇ h as the sound collection angle ⁇ .
  • the sound collection angle ⁇ (vertical angle ⁇ v) of the array microphone 10 in the sound collection unit 90 has a direction (x axis, y axis) parallel to the arrangement surface of the microphones 11A to 11C and directivity. This is the angle between the direction of maximum sensitivity.
  • the microphones 11A to 11C pick up sounds coming toward the microphones 11A to 11C. Further, the camera 20 images, for example, all directions around the camera 20 with the direction directly below (z-axis direction) as a reference direction (optical axis direction).
  • the sound collection target by the array microphone 10 or the image pickup target by the camera 20 may be limited to a part of the direction instead of all directions.
  • the array microphone 10 or the monitoring control device 30 synthesizes the sound data collected in a state where the sound collection target is limited in some directions, and the same sound data as when the sound collection target is omnidirectional. May be generated.
  • the camera 20 or the monitoring control device 30 synthesizes image signals captured in a state where the imaging target is limited in some directions, and generates an image signal similar to that when the imaging target is omnidirectional. Also good.
  • the horizontal angle ⁇ h may be considered.
  • directivity may be formed according to, for example, a three-dimensional (x, y, z) position or direction.
  • FIG. 4 is a flowchart illustrating an operation example of the monitoring control device 30.
  • FIG. 4 shows an example of real-time operation.
  • the real-time operation is, for example, an operation when the operator 60 monitors the audio data collected by the array microphone 10 and the image captured by the camera 20 in real time using the monitoring control device 30.
  • the network processing unit 31 receives the image data sent from the camera 20 via the network 50. Further, the network processing unit 31 receives the multi-channel audio data transmitted from the array microphone 10 via the network 50 (S11).
  • the image data received by the network processing unit 31 is decoded by the image decoder 32 and sent to the image output unit 33.
  • the image output unit 33 outputs the decoded image data to the monitor 61, and controls the monitor 61 to display an image (S12).
  • the network processing unit 31 may cause the data recording unit 43 to record image data and audio data.
  • the sound collection coordinate designating unit 35 accepts a plurality of coordinate inputs from the touch panel 62, for example (S13).
  • the operator 60 visually recognizes the display position of the image displayed on the monitor 61 and operates the touch panel 62 to designate an image range to be noted.
  • the sound collection coordinate designating unit 35 derives sound collection coordinates corresponding to the designated image range. For example, the operator 60 touches the position of a specific person (for example, reference numerals P1 and P2 in FIG. 1) included in the image displayed on the monitor 61, so that the sound collection coordinate designating unit 35 has a plurality of sound collection points. Get the coordinates.
  • the image range is an example of a monitoring area that should be monitored by a monitor.
  • the sound collection coordinate designating unit 35 instead of designating the image range by the operator 60, the image recognition unit 34 recognizes a plurality of predetermined patterns from the image, and acquires a plurality of coordinates where the predetermined pattern exists as sound collection coordinates. May be.
  • the sound collection angle calculation unit 38 derives the sound collection angle ⁇ by referring to, for example, a conversion table or performing a known calculation process based on the sound collection coordinates acquired by the sound collection coordinate designating unit 35 ( S14).
  • the plurality of sound collection angles ⁇ derived by the sound collection angle calculation unit 38 are input to the directivity processing unit 37.
  • the directivity processing unit 37 derives parameters for directivity processing of the array microphone 10 according to the sound collection angle ⁇ . Then, the directivity processing unit 37 performs directivity processing on the audio data from the audio decoder 36 using the derived parameters (S15). Thereby, in the sound data output from the directivity processing unit 37, for example, the sound collection sensitivity of the array microphone 10 is maximized with respect to the direction of the sound collection angle ⁇ .
  • the detection unit 39 detects a monitoring target sound (for example, an abnormal sound, a predetermined keyword, a sound having a signal level equal to or higher than the first predetermined threshold value or lower than the second predetermined threshold value) from the directivity-processed audio data. Detect (S16). It waits in S16 until the monitoring target sound is detected.
  • a monitoring target sound for example, an abnormal sound, a predetermined keyword, a sound having a signal level equal to or higher than the first predetermined threshold value or lower than the second predetermined threshold value
  • the image recognition unit 34 recognizes the image data including the detected sound source of the monitoring target sound, for example, and types of the sound source of the monitoring target sound (for example, human, male, female, object, other sound sources) May be identified (S17). Thereby, since the operator 60 can easily determine whether or not to monitor according to the type of the sound source, the burden on the operator 60 can be reduced, and the monitoring accuracy can be improved.
  • the image recognition unit 34 may detect the movement of the sound source of the monitoring target sound using, for example, the VMD function (S17). As a result, the operator 60 can easily focus on the movement of the sound source, so that the burden on the operator 60 can be reduced and the monitoring accuracy can be improved.
  • the image recognition unit 34 may send the result of image recognition (for example, information on the type of the sound source of the monitoring target sound and information on the movement of the sound source of the monitoring target sound) to the detection unit 39.
  • process of S17 may be omitted.
  • information on whether or not to omit the process of S17 may be set by the user via the touch panel 62, or a control unit (not shown) may be set according to the monitoring level.
  • Information about whether or not to omit the processing of S17 is held in a memory (not shown), for example.
  • the monitoring control device 30 performs a predetermined process (action) according to at least one of the detection result by the detection unit 39 and the image recognition result by the image recognition unit 34 (S18).
  • the detection unit 39 when the monitoring target sound is detected, the type of the sound source is identified, or the movement of the sound source is detected, that is, when a monitoring trigger is generated, the detection unit 39 notifies the warning information by an image.
  • the image output unit 33 may be instructed to do so.
  • the detection unit 39 may instruct the voice output unit 42 to notify the warning information by voice (S18). Further, the detection unit 39 may cause different warning sounds and warning information to be displayed according to the type of the monitoring trigger.
  • the operator 60 of the monitoring control device 30 can easily recognize the occurrence of the monitoring target sound, reduce the burden on the operator 60, and improve the monitoring accuracy.
  • the detection unit 39 may record information on the search tag in the data recording unit 43 (S18).
  • the detection unit 39 may record information on the search tag in the data recording unit 43 (S18).
  • the detection unit 39 may instruct the network processing unit 31 to perform at least one of pre-recording and pre-recording (S18).
  • pre-recording and pre-recording S18
  • the use efficiency of the data recording unit 43 can be improved by not recording or recording the data in the data recording unit 43.
  • audio data or image data at the time when the monitoring trigger occurs can be reliably recorded, and can be confirmed as a verification material in the future, for example.
  • the detection unit 39 may process the keyword (S18). Thereby, even when the keyword is confidential information, the confidential information can be protected. Further, when recording voice data including a keyword by deleting or replacing the keyword, the voice data can be stored while protecting confidential information.
  • the detection unit 39 may instruct the directivity processing unit 37 to switch the direction of directivity (S18).
  • the directivity processing unit 37 may switch the direction of directivity (S18).
  • the sound source estimation unit 40 estimates the position of the sound source of the monitoring target sound (S19). Thereby, the monitoring accuracy by the operator 60 can be improved.
  • the directivity processing unit 37 acquires information on the position of the sound source of the monitoring target sound estimated from the sound source estimation unit 40 at a predetermined timing (for example, every predetermined time), and directivity is set to the position of the sound source.
  • the direction of directivity is switched so as to face (S20).
  • the operator 60 can simultaneously monitor the image and sound in the current monitoring area via the monitor 61 and the speaker 63.
  • a plurality of arbitrary monitoring areas can be designated as a monitoring target. Further, by performing various processes according to the detection of the monitoring target sound, the usability of the audio data is increased and the convenience can be improved.
  • FIG. 5 is a schematic diagram illustrating a basic configuration example related to directivity processing.
  • the directivity processing unit 37 includes a plurality of delay units 37bA, 37bB, 37bC and an adder 37c, and directivity may be formed by these processes.
  • Analog audio data output from the microphones 11A to 11C is converted into digital audio data by the A / D converters 13A, 13B, and 13C, and the directivity processing unit 37 performs directional processing on the converted digital audio data.
  • the number of microphones included in the array microphone 10 (n), the number of A / D converters (n), and the number of delay units included in the directivity processing unit 37 (n) are increased or decreased as necessary.
  • the sound source 80 is a sound source of the monitoring target sound, for example.
  • each of the plurality of audio data is given a time delay by the delay units 37bA to 37bC to adjust the phase, and the audio data whose phases are adjusted are added by the adder 37c. Thereby, a plurality of audio data having the same phase are added, and the signal level is increased.
  • the arrival time difference changes according to the arrival direction (corresponding to the sound collection angle ⁇ ) of the sound wave incident on the housing incident surface 121 of the array microphone 10 from the sound source 80.
  • the plurality of microphones 11A to 11C detect sound waves coming from a specific direction ( ⁇ )
  • the phases of the plurality of sound data input to the adder 37c match, and the sound data output from the adder 37c
  • the signal level increases.
  • a phase difference occurs in a plurality of audio data input to the adder 37c, and the signal level of the audio data output from the adder 37c is attenuated. Therefore, the directivity of the array microphone 10 can be formed so that the sensitivity is increased with respect to the sound wave coming from the specific direction ( ⁇ ).
  • the delay times D1, D2, and D3 represented by (Equation 1) correspond to the delay devices 37bA, 37bB, and 37bC. Assigned as delay time.
  • L1 Difference in sound wave distance between the first microphone and the nth microphone (known constant)
  • L2 Difference in sound wave distance between the second microphone and the nth microphone (known constant)
  • L3 Difference in sound wave arrival distance between the third microphone and the nth microphone (known constant)
  • Vs speed of sound (known constant)
  • d Microphone arrangement interval (known constant)
  • Delay times D1 to D3 are assigned to the delay units 37bA, 37bB, and 37bC.
  • the directivity processing unit 37 acquires the delay times D1 to D3 based on the sound collection angle ⁇ from the sound collection angle calculation unit 38 and (Equation 1), and uses the delay times D1 to D3 as the delay units 37bA. Assign to ⁇ 37bC. Thereby, the sound data of the sound wave arriving at the housing incident surface 121 from the direction of the sound collection angle ⁇ can be emphasized, and the directivity of the array microphone 10 can be formed.
  • the assigned delay times D1 to D3 and known constants in (Expression 1) are stored in a memory (not shown) in the monitoring control device 30.
  • a plurality of monitoring area designations from the operator 60 of the monitoring control apparatus 30 are received, and directivity is directed in a direction corresponding to the monitoring area.
  • the monitoring control device 30 performs various processes, thereby promoting the utilization of audio data collected by the array microphone 10 and image data captured by the camera 20. Can improve convenience.
  • the monitoring system includes a recorder that records audio data or image data separately from the monitoring control device.
  • FIG. 6 is a schematic diagram of the monitoring system 100B in the embodiment. 6 and 1 are different in that the monitoring system 100B includes a recorder 70.
  • the recorder 70 is connected to the network 50.
  • the recorder 70 is an example of a storage device.
  • the recorder 70 stores, for example, audio data collected by the array microphone 10 and image data captured by the camera 20.
  • FIG. 7 is a block diagram showing a configuration example of the monitoring system 100B.
  • the same components as those of the monitoring system 100 shown in FIG. 2 are denoted by the same reference numerals, and description thereof is omitted or simplified.
  • the monitoring system 100B includes an array microphone 10, a camera 20, a monitoring control device 30B, and a recorder 70.
  • the monitoring control device 30B does not include the data recording unit 43 as compared with the monitoring control device 30 shown in FIG. Instead of recording data to the data recording unit 43 or reading data from the data recording unit 43, the monitoring control device 30 ⁇ / b> B accesses the data recording unit 72 included in the recorder 70 to record data or read data from the data recording unit 72. .
  • the data is communicated via the network processing unit 31, the network 50 of the monitoring control device 30B, and the network processing unit 71 of the recorder 70.
  • the recorder 70 includes a network processing unit 71 and a data recording unit 72.
  • the recorder 70 includes, for example, a CPU, DSP, ROM, or RAM, and realizes various functions by executing a control program recorded in the ROM or RAM by the CPU or DSP.
  • the network processing unit 71 acquires, for example, audio data of a plurality of channels transmitted from the array microphone 10 or image data transmitted from the camera 20 via the network 50.
  • the network processing unit 71 sends, for example, audio data or image data recorded by the data recording unit 72 to the network 50.
  • the data recording unit 72 has the same configuration and function as the data recording unit 43 of the monitoring control device 30 shown in FIG. Further, the data recording unit 72 records data similar to the data recorded by the data recording unit 43 (for example, audio data, image data, search tag information).
  • the data recording unit 72 may record the received data in association with each other.
  • the data recording unit 72 Information may be recorded in association with audio data or image data.
  • the audio data, the image data, and the search tag information recorded in the data recording unit 72 are read from the data recording unit 72 and executed by, for example, a predetermined command by the CPU, and the network processing unit 71. And transmitted to the monitoring control device 30B via the network 50.
  • the data recording unit 72 matches the information recorded as the search tag with the received predetermined information or It is determined whether or not it corresponds. If the data recording unit 72 determines that the two match, the data recording unit 72 searches the audio data or image data associated with the search tag and sends the searched audio data or image data to the network 50.
  • the search tag recorded in the recorder 70 it is possible to easily search for audio data or image data recorded in the past, shorten the search time, and improve the convenience of the operator 60.
  • FIG. 8 is a flowchart illustrating an operation example of the monitoring control device 30B.
  • FIG. 8 shows an example of recorder output playback operation.
  • the recorder output reproduction operation example is, for example, an operation when the operator 60 analyzes past audio data and image signals recorded in the recorder 70 using the monitoring control device 30B.
  • steps that perform the same processing as the processing in FIG. 4 are given the same step numbers, and description thereof is omitted or simplified.
  • the monitoring control device 30B instructs the recorder 70 to read out specific image data and audio data recorded in the recorder 70, for example, in accordance with an input operation from the operator 60.
  • the specific image data and audio data are read from the recorder 70 and received by the network processing unit 31 via the network 50 (S21).
  • the operator 60 can simultaneously monitor images and sound in the past monitoring area via the monitor 61 and the speaker 63.
  • a plurality of arbitrary monitoring areas can be designated as a monitoring target. Further, by performing various processes according to the detection of the monitoring target sound, the usability of the audio data is increased and the convenience can be improved.
  • search tag is recorded in association with the recorded image data or audio data, for example, when searching for data related to the monitoring target sound later, it is possible to quickly search.
  • the usability of the audio data is increased and the convenience can be improved.
  • recorder output reproduction operation example of FIG. 8 can also be applied to an operation in the case of handling data recorded in the data recording unit 43 in the first embodiment.
  • the monitoring system 100B for example, in the image data recorded in the past, a plurality of monitoring area designations from the operator 60 of the monitoring control apparatus 30B are received, and directivity is directed in the direction corresponding to the monitoring area. Can monitor for abnormalities.
  • the monitoring control device 30B performs various processes, thereby promoting the utilization of audio data collected by the array microphone 10 and image data captured by the camera 20, and the operator 60 Can improve convenience.
  • the present invention is not limited to the configuration of the above-described embodiment, and any configuration can be used as long as the functions shown in the claims or the functions of the configuration of the present embodiment can be achieved. Is also applicable.
  • the array microphone 10 or the camera 20 may include some components related to the audio processing included in the monitoring control devices 30 and 30B.
  • the array microphone 10 includes, for example, a part of the image recognition unit 34, the sound collection coordinate specification unit 35, the sound collection angle calculation unit 38, the directivity processing unit 37, the detection unit 39, the sound source estimation unit 40, and the speech synthesis unit 41. You may have everything. Thereby, the processing load of the monitoring control apparatuses 30 and 30B can be reduced. In the case where the array microphone 10 has some components related to voice processing, necessary data is communicated as appropriate via the network 50 between the monitoring control devices 30 and 30B and the array microphone 10.
  • the array microphone 10 in which the plurality of microphones 11 are arranged at a constant interval on one circumference is illustrated, but the arrangement of the microphones 11 may be different. For example, they may be arranged in a line along a single direction (for example, the x-axis direction) at regular intervals. Further, they may be arranged in a cross shape at regular intervals along two directions (for example, the x-axis direction and the y-axis direction). Moreover, you may arrange
  • the monitoring control devices 30 and 30B may associate and preset the actual spatial monitoring range and the sound collection angle ⁇ of the array microphone 10 without using the camera 20. That is, the memory (not shown) of the monitoring control devices 30 and 30B may hold correspondence information between the monitoring range and the sound collection angle ⁇ . In this case, for example, when the user designates a plurality of predetermined monitoring ranges via the touch panel 62 or the like, the sound collection angle calculation unit 38 refers to the correspondence information held in the memory and derives a plurality of sound collection angles ⁇ . May be.
  • the sound collection angle may be directly designated by the user via the touch panel 62 or the like, and the designated data may be handled as data derived by the sound collection angle calculation unit 38. Thereby, a plurality of directivity directions can be determined without using the camera 20.
  • the monitoring systems 100 and 100B may be a system for monitoring using sound without using an image.
  • the configuration unit for realizing the function related to the camera 20 or the display may be omitted.
  • the sound collection unit 90 is exemplified as being fixed to the indoor ceiling surface 101.
  • the sound collection unit 90 may be fixed to another position (for example, an indoor wall surface).
  • a plurality of cameras 20 may be provided in the monitoring systems 100 and 100B.
  • the monitor 61, the touch panel 62, and the speaker 63 may be included in the monitoring control devices 30 and 30B.
  • a software keyboard for performing volume adjustment may be displayed on the monitor 61.
  • the software keyboard By operating the software keyboard with the touch panel 62, for example, the volume of voice data subjected to directivity processing can be adjusted.
  • control unit may correct the distortion of the audio data generated according to the environment in which the sound collection unit 90 is installed. Further, a control unit (not shown) may correct distortion generated in image data captured by the camera 20 (for example, a camera having a fisheye lens).
  • the sound collection coordinate designation unit 35 is touched again by the touch panel 62.
  • the monitoring area may be excluded from the monitoring target. That is, when the same position or region in the image data displayed on the monitor 61 is touched a plurality of times, the sound collection coordinate designating unit 35 ends the derivation of the sound collection coordinates, and directivity processing by the directivity processing unit 37 is performed. May be terminated.
  • the sound collection coordinate designating unit 35 may exclude a plurality of monitoring areas from the monitoring target at the same time.
  • the sound collection coordinate designating unit 35 may move the monitoring area when a drag operation is received while the monitoring area is touched by the touch panel 62.
  • the sound collection coordinate designating unit 35 may accept a plurality of movements of the monitoring area at the same time.
  • the monitoring systems 100 and 100B may include a plurality of sound collection units 90.
  • the sound collection units 90 may form image data in cooperation with each other to form sound data.
  • images captured by the cameras 20 of the sound collection units 90 may be displayed on the divided screens of the monitor 61 at the same time.
  • the supervisory control devices 30 and 30B use the voice data collected by each sound collecting unit 90 to perform directivity processing even when a drag operation is accepted across the plurality of divided screens by the touch panel 62 in each divided screen. May be performed. This drag operation may be received simultaneously in a plurality of different areas on the monitor 61, for example.
  • An audio processing device includes a data acquisition unit that acquires audio data collected by a sound collection unit including a plurality of microphones and image data captured by an imaging unit, and a display based on the image data.
  • a voice signal in the audio data in a plurality of directions designated by the designation unit and a plurality of directions designated by the designation unit corresponding to a designated place on the image to be specified.
  • a directivity processing unit is included in a data acquisition unit that acquires audio data collected by a sound collection unit including a plurality of microphones and image data captured by an imaging unit, and a display based on the image data.
  • a voice signal in the audio data in a plurality of directions designated by the designation unit and a plurality of directions designated by the designation unit corresponding to a designated place on the image to be specified.
  • the supervisor who handles the voice processing apparatus can monitor the presence or absence of abnormality in a state where a plurality of monitoring areas are designated and directivity is formed in a direction corresponding to the monitoring area. Thereby, utilization of the collected voice data and captured image data can be promoted, and convenience for the supervisor can be improved.
  • the specifying unit specifies a plurality of image ranges in the image data acquired by the data acquisition unit
  • the directivity processing unit specifies the specification in the audio data.
  • a plurality of audio components coming from directions of a plurality of image ranges designated by the unit may be emphasized.
  • the monitor since the image data is used, the monitor can intuitively specify a plurality of monitoring areas. Therefore, the monitor can easily monitor a plurality of monitoring areas simultaneously based on listening to a predetermined sound. Moreover, when monitoring image data together with audio data, the monitoring accuracy can be improved.
  • the sound processing device further includes a sound detection unit that detects a predetermined sound from at least one of the sound components in the plurality of directions emphasized by the directivity processing unit, and the sound detection And a processing unit that performs a predetermined process when the predetermined sound is detected by the unit.
  • the sound processing device performs various actions in accordance with the detection of the predetermined sound, the utilization of the collected sound data and the captured image data is promoted, and the convenience of the supervisor Can be improved.
  • the processing unit detects audio data including the predetermined sound from a recording unit that records the audio data and the image data when the predetermined sound is detected.
  • a search tag for searching for image data including the sound source of the predetermined sound may be recorded in the recording unit.
  • the processing unit corresponds to a predetermined search tag included in the search tag recorded in the recording unit, or the audio data recorded in the recording unit or You may comprise so that image data may be acquired.
  • past audio data or image data in which a similar event has occurred can be searched using a search tag designated by the user via the touch panel. Therefore, utilization of audio data or image data can be promoted, convenience for the supervisor can be improved, and monitoring accuracy can be improved.
  • the search tag includes the type of the predetermined sound, the direction of the sound source of the predetermined sound with respect to the sound collection unit, and the sound detection unit. You may comprise so that at least 1 information may be included among the time when the predetermined sound was detected.
  • various information can be recorded as search tags corresponding to voice data, and desired voice data can be quickly searched when necessary.
  • the speech processing device is configured such that, when the predetermined sound is detected, the processing unit presents warning information including the fact that the predetermined sound is detected to the presentation unit. May be.
  • the sound processing device may be configured such that, when the predetermined sound is detected, the processing unit causes the recording unit to record sound data including the predetermined sound.
  • the speech processing apparatus may be configured such that the processing unit changes a direction in which the speech component is emphasized by the directivity processing unit when the predetermined sound is detected. .
  • the predetermined sound is tracked by changing the direction of directivity so as to face the preset direction. The possibility of being able to be improved.
  • the speech processing apparatus may be configured to include an estimation unit that estimates a position of a sound source that emits the predetermined sound and causes the presentation unit to present information on the estimated position.
  • the monitor since the monitor can easily check the estimated position of the sound source, the burden on the monitor can be reduced and the monitoring accuracy can be improved.
  • the speech processing apparatus includes an estimation unit that estimates a position of a sound source that emits the predetermined sound, and the directivity processing unit is a direction of the position of the sound source estimated by the estimation unit. It may be configured to emphasize the voice component coming from.
  • the monitor since the monitor can track the sound source of a predetermined sound by relying on the sound data, the trend of the sound source can be easily monitored and the monitoring accuracy can be improved.
  • the sound detection unit has a signal level of a sound component emphasized by the directivity processing unit equal to or higher than a first predetermined signal level or a second predetermined signal level.
  • the predetermined sound may be detected.
  • the threshold is set so as to be able to detect a sound that is louder than a normally expected life sound, thereby increasing the possibility of detecting an abnormal sound.
  • the sound processing device is configured such that the sound detection unit detects a predetermined keyword as a predetermined sound from at least one of sound components emphasized by the directivity processing unit. Also good.
  • a highly confidential keyword can be detected in a voice component in the direction of directivity, and various processes can be performed on the keyword, so that convenience for the user can be improved.
  • the speech processing apparatus may be configured such that the processing unit processes the portion of the predetermined keyword in the speech data including the detected predetermined keyword.
  • the confidential information can be protected. Further, for example, when recording voice data including a keyword by deleting or replacing the keyword, the voice data can be stored while protecting confidential information.
  • the speech processing apparatus may be configured such that the processing unit causes the recording unit to record speech data including the detected predetermined keyword.
  • recording of voice data can be started by using a keyword issued in the monitoring area as a trigger. Therefore, the use efficiency of the recording unit can be improved by not recording the voice data when no keyword is detected.
  • voice data including the keyword can be recorded, and can be confirmed as a verification material in the future, for example.
  • the sound detection unit detects a predetermined abnormal sound included in at least one of the sound components emphasized by the directivity processing unit as the predetermined sound. You may comprise.
  • An audio processing apparatus includes an image recognition unit that recognizes an image with respect to the image data, and the processing unit performs the predetermined process according to an image recognition result by the image recognition unit. It may be configured to do.
  • the abnormality detection accuracy in the monitoring region can be improved by considering the image recognition result together with the detection of the predetermined sound. Therefore, the supervisor can appropriately respond, and the monitoring accuracy can be improved.
  • the sound processing device may be configured such that the image recognition unit recognizes the type of the sound source of the predetermined sound in the image data.
  • the monitor can easily determine whether or not to monitor according to the type of the sound source, the burden on the monitor can be reduced and the monitoring accuracy can be improved.
  • the search tag indicating the type of sound source is added, even if the audio data is reviewed in the future, the search can be easily performed according to the type of sound source, and for example, the verification time can be shortened.
  • the audio processing apparatus may be configured such that the image recognition unit recognizes the presence or absence of movement of the sound source of the predetermined sound in the image data.
  • the monitor can easily focus on the movement of the sound source, the burden on the monitor can be reduced and the monitoring accuracy can be improved.
  • the search tag indicating the presence or absence of a sound source movement is added, even if the audio data is reviewed in the future, the search can be easily performed according to the presence or absence of the sound source movement, and for example, the verification time can be shortened.
  • the processing unit when the processing unit recognizes the image data by the image recognition unit, the recording unit that records the audio data and the image data A search tag for searching for audio data including a predetermined sound or image data including a sound source of the predetermined sound may be recorded in the recording unit.
  • the desired image data or a specific portion of the image data can be easily searched, and for example, the verification time can be shortened.
  • the processing unit corresponds to the predetermined search tag using a predetermined search tag included in the search tag recorded in the recording unit, You may comprise so that the said audio
  • the speech processing apparatus is configured such that the search tag includes at least one of the type of the sound source, the presence / absence of movement of the sound source, and a thumbnail image including the sound source. May be.
  • the processing unit when the predetermined sound is detected, the processing unit indicates that the predetermined sound is detected according to an image recognition result by the image recognition unit. You may comprise so that the warning information to include may be shown in a presentation part.
  • the monitor can be notified that a sound accompanying an abnormality has occurred, and attention such as strengthening the monitoring can be urged.
  • the processing unit when the predetermined sound is detected, the processing unit records audio data including the predetermined sound according to an image recognition result by the image recognition unit. You may comprise so that it may record on a part.
  • the recording unit it is possible to improve the utilization efficiency of the recording unit by not recording audio data when a predetermined sound is not detected. Further, when a predetermined sound is detected, the sound data at the time when the predetermined sound is generated can be reliably recorded using the image recognition result, and can be confirmed as a verification material in the future, for example. Similarly, when image data is recorded, the monitoring accuracy can be further improved.
  • the processing unit when the predetermined sound is detected, emphasizes a sound component by the directivity processing unit according to an image recognition result by the image recognition unit. You may comprise so that the direction to be changed may be changed.
  • the direction of directivity is changed to face the preset direction using the image recognition result.
  • the possibility of tracking a predetermined sound can be improved.
  • the sound processing system of one embodiment of the present invention includes a sound collection device that includes a sound collection unit that collects sound using a plurality of microphones, an image pickup device that includes an image pickup unit that picks up an image, and the sound collection unit.
  • a sound processing device that processes the sound data that has been sounded, wherein the sound processing device acquires the sound data picked up by the sound pickup unit and the image data picked up by the image pickup unit
  • a designation unit for designating a plurality of directions relative to the sound collection unit corresponding to a designated location on the image displayed based on the image data, and the plurality of directions designated by the designation unit
  • a directivity processing unit that emphasizes a voice component in the voice data.
  • the monitor can monitor the presence or absence of abnormality in a state where a plurality of monitoring areas are designated and directivity is formed in a direction corresponding to the monitoring area. Thereby, utilization of the collected voice data can be promoted, and convenience for the supervisor can be improved.
  • the specifying unit specifies a plurality of image ranges in the image data acquired by the data acquisition unit
  • the directivity processing unit specifies the specification in the audio data.
  • a plurality of audio components coming from directions of a plurality of image ranges designated by the unit may be emphasized.
  • the monitor since the image data is used, the monitor can intuitively specify a plurality of monitoring areas. Therefore, the monitor can easily monitor a plurality of monitoring areas simultaneously based on listening to a predetermined sound. Moreover, when monitoring image data together with audio data, the monitoring accuracy can be improved.
  • the sound processing unit detects a predetermined sound from at least one of the sound components in the plurality of directions emphasized by the directivity processing unit. And a processing unit that performs a predetermined process when the predetermined sound is detected by the sound detection unit.
  • the sound processing device performs various actions in accordance with the detection of the predetermined sound, the utilization of the collected sound data and the captured image data is promoted, and the convenience of the supervisor Can be improved.
  • the data acquisition unit acquires the audio data from the sound collection device, acquires the image data from the imaging device, and the audio processing device You may comprise so that the recording tag which records the tag for search for searching the audio
  • the audio processing system includes a recording device that records data, and the recording device receives audio data picked up by the sound pickup unit and image data picked up by the image pickup unit.
  • a recording unit that records the search tag for searching for audio data including the predetermined sound, the data acquisition unit including the audio data, the image data, and the data from the recording unit; You may comprise so that the tag for a search may be acquired.
  • a sound processing method in which sound data collected by a sound collecting unit including a plurality of microphones and image data captured by an imaging unit are acquired, and display is performed based on the image data. Designating a plurality of directions relative to the sound collection unit corresponding to a designated location on the image to be performed, and emphasizing audio components in the audio data in the designated plurality of directions. .
  • the monitor can monitor the presence or absence of abnormality in a state where a plurality of monitoring areas are designated and directivity is formed in the direction corresponding to the monitoring area. Thereby, utilization of the collected voice data and captured image data can be promoted, and the convenience of the supervisor can be improved.
  • the present invention is useful for an audio processing device, an audio processing system, an audio processing method, and the like that can promote the utilization of audio data and image data and improve convenience.

Abstract

La présente invention concerne un appareil de traitement du son qui peut favoriser l'utilisation de données sonores et des données d'image, ce qui permet d'améliorer l'expérience utilisateur. L'appareil de traitement du son comprend : une unité d'acquisition de données pour acquérir les données sonores de sons captés par une unité de prise de son comprenant une pluralité de microphones et également pour acquérir les données d'image d'images capturées par une unité de capture d'images; une unité de désignation pour désigner une pluralité de directions par rapport à l'unité de prise de sons qui correspondent à des points désignés sur une image affichée d'après les données d'images; et une unité de traitement de directivité pour mettre en valeur des composantes sonores des données sonores dans la pluralité de directions désignées par l'unité de désignation.
PCT/JP2014/001898 2014-03-31 2014-03-31 Appareil de traitement du son, système de traitement du son, procédé de traitement du son WO2015151130A1 (fr)

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CN201480044954.0A CN105474665A (zh) 2014-03-31 2014-03-31 声音处理装置、声音处理系统及声音处理方法
PCT/JP2014/001898 WO2015151130A1 (fr) 2014-03-31 2014-03-31 Appareil de traitement du son, système de traitement du son, procédé de traitement du son
JP2015526798A JPWO2015151130A1 (ja) 2014-03-31 2014-03-31 音声処理方法、音声処理システム、及び記憶媒体

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