KR20100117793A - Apparatus for analyzing sound source - Google Patents

Apparatus for analyzing sound source Download PDF

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Publication number
KR20100117793A
KR20100117793A KR1020090036433A KR20090036433A KR20100117793A KR 20100117793 A KR20100117793 A KR 20100117793A KR 1020090036433 A KR1020090036433 A KR 1020090036433A KR 20090036433 A KR20090036433 A KR 20090036433A KR 20100117793 A KR20100117793 A KR 20100117793A
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KR
South Korea
Prior art keywords
sound source
noise
sound
grid
measuring
Prior art date
Application number
KR1020090036433A
Other languages
Korean (ko)
Inventor
이장명
Original Assignee
주식회사 싸이언
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Priority to KR1020090036433A priority Critical patent/KR20100117793A/en
Publication of KR20100117793A publication Critical patent/KR20100117793A/en

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    • 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
    • G10L21/00—Speech or voice signal processing techniques to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
    • G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
    • G10L21/0208—Noise filtering
    • G10L21/0216—Noise filtering characterised by the method used for estimating noise
    • 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
    • G10L25/57—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 for processing of video signals
    • 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
    • G10L25/60—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 for measuring the quality of voice signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
    • H04N5/60—Receiver circuitry for the reception of television signals according to analogue transmission standards for the sound signals

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Computational Linguistics (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Quality & Reliability (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)

Abstract

A sound source analysis device is disclosed. The sound source analyzing apparatus includes an image generator for generating a sound source image by capturing a sound source, and a grid generator for generating a grid-shaped image grid for dividing the sound source image into a plurality of noise regions in the sound source image. And a display device connected to the grid generating camera to display the sound source image on which the grid is formed, a sound pressure value SIL corresponding to a sound pressure level generated from the sound source, a sound pressure level generated from a sound source, and a sound pressure level around the sound source. And a noise measuring device for measuring a noise value SPL including noise and outputting sound pressure data, and a data processing system for processing the respective sound pressure data.

Description

Sound source analysis device {APPARATUS FOR ANALYZING SOUND SOURCE}

The present invention relates to a sound source analysis device.

Recently, many social problems related to noise have occurred, and efforts to improve noise have been steadily performed. Recently, a noise analysis device for measuring and analyzing noise has also been developed.

Currently, the noise analyzing apparatuses are required to accurately measure and analyze the change of the noise value at various positions of the noise source and the distance between the noise source and the noise analyzing apparatus.

An object of the present invention is to provide a sound source analysis device having a function of measuring and displaying only the noise of the sound source to be distinguished from the ambient noise.

In addition, an object of the present invention provides a sound source analysis device that can analyze the noise of the noise source in the field simply by using a camera, unlike the analysis of the noise of the noise source by forming a grid using a conventional chamber.

An object of the present invention is to save the environment of the noise scene as it is, for example, the distance between the noise measurement object and the noise measurement position, the frequency characteristics at the time of photographic and noise measurement of the noise measurement object and the ambient noise at the time of noise measurement It provides a sound source analysis device having a function to capture and store the.

The sound source analyzing apparatus according to the present invention includes an image generator for generating a sound source image by photographing a sound source and a grid generator for generating a grid-shaped image grid for dividing the sound source image into a plurality of noise regions in the sound source image. A display device for connecting the grid generation camera, the grid generation camera and displaying the sound source image on which the grid is formed, generated from a sound pressure value (SIL) corresponding to the sound pressure level generated from the sound source and a sound source And a noise measuring device for measuring a sound pressure level (SPL) including the sound pressure level and the noise around the sound source and outputting sound pressure data, and a data processing system for processing the respective sound pressure data.

The noise measuring device includes a base body having a bar shape, at least two noise measuring microphones disposed on the base body to measure the sound pressure value and the noise value, the sound source and A distance measuring sensor measuring a distance between the noise measuring microphones, a sound source photographing camera disposed on the base body and photographing the sound source, and the distance measuring sensor, the sound source photographing camera and the noise measuring microphones It includes a capture switch for.

The noise measuring microphones include a first microphone and a second microphone for measuring the sound pressure value SIL and the noise value SPL, respectively.

And a light providing unit disposed on the base body and providing light to the sound source to operate the camera in a dark place.

The data processing system further includes a data storage configured to store the sound pressure value SIL, the noise value SPL, the measurement distance data, and the frequency characteristic data of the sound source.

The data processing system further includes a data comparator comparing the past data stored in the data storage unit in the past with the current data stored in the data storage unit to determine whether there is an abnormality of the sound source.

According to the present invention, the sound intensity level (SIL) and / or the sound pressure level (SPL) generated from the sound source can be displayed on the screen of the display device, and the noise generating area is determined by the grid generating camera. It has the effect of measuring the sound pressure value or the noise value in the noise area without forming a grid by forming a virtual yarn or a string.

Further, according to the present invention, a function capable of storing the noise scene environment as it is, for example, the distance between the noise measurement target and the noise measurement position, the photograph of the noise measurement target, the frequency characteristics at the time of noise measurement, and the surroundings at the time of noise measurement It has the effect of measuring noises and storing them at once.

Hereinafter, a sound source analyzing apparatus according to embodiments of the present invention will be described in detail with reference to the accompanying drawings, but the present invention is not limited to the following embodiments, and those skilled in the art The present invention may be embodied in various other forms without departing from the spirit of the invention.

1 is a cross-sectional view showing a sound source analysis apparatus according to an embodiment of the present invention.

Referring to FIG. 1, the sound source analyzing apparatus 100 includes a grid generating camera 10, a display device 20, a noise measuring device 30, and a data processing system DAQ 40.

The grid generation camera 10 includes an image generator 12 and a grid generator 14.

The image generating unit 12 generates a digitized sound source image 12a as shown in FIG. 2 by capturing a moving picture or a picture of the sound source. The sound source 13 shown in FIG. 2 is, for example, a speaker.

3 is a plan view illustrating a grid formed by a grid generator.

Referring to FIG. 3, the grid generator 14 generates a fixed grid 15 to display the plurality of noise regions 15a in the sound source image 12a generated by the image generator 12. In addition, the grid generators 14 may freely adjust the area of each noise area 15a by adjusting the space between the grids 15 to be wider or narrower, thereby narrowing the level distribution of sound generated from the sound source or It can be measured widely.

The display device 20 may be a flat panel display device, and the display device 20 displays the sound source image 12a output from the grid generation camera 10 or the sound source image 12a on which the grid 15 is formed. .

4 is a plan view illustrating the noise measuring apparatus illustrated in FIG. 1.

3 and 4, the noise measuring apparatus 30 measures the sound pressure level generated from the sound source 13 in each of the noise regions 15a displayed on the sound source image 12a displayed on the display device 20. Output sound pressure data.

The noise measuring apparatus 30 includes a base body 31, a microphone 34 for measuring noise, a distance measuring sensor 36, a sound source photographing camera 37, and a capture switch 39. In addition, the noise measuring device 30 further includes a light providing unit 38 for providing light to the sound source photographing camera 37.

The base body 32 fixes the noise measuring microphone 34, the distance measuring sensor 36, the sound source photographing camera 27 and the capture switch 29, and the base body 32 is, for example, a bar ( bar) shape.

The noise measuring microphones 34 include a first microphone 32 and a second microphone 33, and the noise measuring microphones 34 are fixed on the base body 32.

The first and second microphones 32 and 33 may output both a Sound Intensity Level (SIL) generated from a sound source, a Sound Pressure Level (SPL) including a sound source and noise around the sound source. . Here, the sound pressure value SIL means the sound pressure intensity of the sound generated from the sound source, and the noise value SPL includes ambient sound as well as the sound pressure value of the sound source.

Only the signal in the direction from the first microphone 32 to the second microphone 33 can be selectively detected using the first microphone 32 and the second microphone 33. The first and second microphones 32 and 34 may measure a sound pressure value traveling in only one direction through a processing process in the data processing unit of the data processing system 40. That is, the sound pressure value SIL coming from the sound source can be measured by placing the first microphone 32 on the side where the sound source is located and orienting the measuring unit so that the second microphone 33 is located next.

The distance measuring sensor 36 measures the distance between the sound source and the noise measuring microphone 34, and the distance measuring sensor 36 outputs a signal corresponding to the distance between the sound source and the noise measuring microphone 34.

The sound source photographing camera 37 stores as a still image which position of the sound source the sound pressure value SIL and the noise value SPL were measured by the noise measuring microphone 34. The sound source photographing camera 37 stores the environment at the time of noise, that is, the environment at the time of measuring the noise from the noise measuring microphone 34 as an image.

The light providing unit 38 provides light to the sound source when photographing the sound source with the sound source photographing camera 37 in a dark place such as a room.

The capture switch 39 serves to operate the distance measuring sensor 36, the sound source photographing camera 37, and the noise measuring microphone 34. By the capture switch 29, the noise measuring microphone 34 measures the noise of the sound source, and the distance measuring sensor 36 between the sound source and the noise measuring microphone 34 when the noise measuring microphone 34 is operated. Measure the distance.

Data generated from the noise measuring microphone 34, the distance measuring sensor 26, the sound source photographing camera 37, and the capture switch 39 are respectively transferred to the data processing system 40 to be described later using the BNC cable 30a. Is provided.

The data processing system 40 processes the data transmitted from the noise measuring device 30 by the BNC cable 30a to display the sound pressure value SIL and the noise value SPL generated from the sound source on the display device 20. do.

In this embodiment, the data processing system 40 is electrically connected to the data storage unit 48, and the data storage unit 48 has a sound pressure value SIL, a noise value SPL, measurement distance data, frequency of a sound source. The characteristic data is stored. Based on the data stored in the data storage unit 48, it is possible to determine whether a sound source, for example, a mechanical device or a mechanical object is abnormal.

Meanwhile, the data processing system 40 may further include a data comparator 49. The data comparator 49 compares the past sound source data stored in the data storage unit 48 with the current sound source data measured and stored in the data storage unit 48 to determine whether there is an abnormality and a decrease in performance of the mechanical device and the mechanism. .

The data processing system 40 stores the sound pressure value SIL and the noise value SPL in each noise region displayed in a grid in the sound source image, respectively, and thus uses the sound pressure value SIL as shown in FIG. 7. A noise map representing a sound source may be displayed on the image. The noise level shows the same noise level in an annular shape.

Hereinafter, the operation of the sound source analyzing apparatus according to the present embodiment will be described with reference to FIG. 5.

Referring to FIG. 5, a grid generating camera 10 is disposed in front of the sound source 13 to measure the sound pressure value SIL and the noise value SPL generated from the sound source 13 such as a speaker. The grid generation camera 10 generates a sound source image 12a as shown in FIG. 2 in the form of a video, and displays the sound source image 12a in the sound source image 12a as shown in FIG. Create a grid 15 that is divided into 15a).

The sound source image 12a on which the grid 15 is generated is displayed by the display device 20.

After the sound source image 12a on which the grid 15 is generated is displayed on the display device 20, the measurement researcher may select one of the plurality of noise regions 15a displayed on the sound source image 12a of the display device 20. The noise measuring microphone 34 of the noise measuring device 30 is disposed, and the sound pressure value SIL, the noise value SPL, and the distance data in the corresponding noise region 15a are pressed by pressing the capture switch 39. Provided to the processing system 40, the data processing system 40 processes the corresponding data and displays the processed data on the display device 20 as shown in FIG. The display device 20 displays the distance D between the sound source 13 and the noise measuring device 30, the sound pressure value SIL, and the sound pressure value SIL in each noise region 15a.

8 is a plan view illustrating information displayed on a display device.

Referring to FIG. 8, in addition to the sound pressure value SIL and the sound source value SIL of the sound source measured by the noise measuring microphone 34, the noise value SPL including the ambient noise level, and the frequency characteristic data of the sound source object. The distribution data of the sound source and the distance data with the sound source measured by the distance measuring sensor 26 are processed and stored in the data processing system 40 and then displayed by the display device 20.

Referring to FIG. 9, the display device 20 may simultaneously display a sound pressure value SPL of a sound source and a noise value SPL that displays ambient noise in addition to the sound pressure value of the sound source. By simultaneously displaying the sound pressure value SIL and the noise value SPL from the display device 20, the pure sound pressure value of the object to be measured and the noise value of the influence of the ambient noise can be compared and analyzed. This is useful when you want to know only the sound pressure value for a particular machine when several machines in the plant are running at the same time.

Referring to FIG. 10, the display device 20 captures and manages the acoustic characteristics (sound pressure value, acoustic frequency characteristic, etc.) of the measurement or management object as a picture, and then captures the change in the acoustic characteristics again after time passes. The photographs of the dogs are compared, and thus the change in acoustic characteristics of the object to be managed can be seen. By applying this, it is possible to respond to the failure diagnosis and the defect inspection of the machine.

As described in detail above, the sound pressure value SIL and / or the noise value SPL generated from the sound source can be displayed on the screen of the display device, and the noise generating area is virtually formed by the grid generating camera. It is possible to measure the sound pressure value or the noise value in the noise region without forming a grid with a cord or the like.

Further, according to the present invention, a function capable of storing the noise scene environment as it is, for example, the distance between the noise measurement target and the noise measurement position, the photograph of the noise measurement target, the frequency characteristics at the time of noise measurement, and the surroundings at the time of noise measurement It has the effect of measuring noises and storing them at once.

In the detailed description of the present invention described above with reference to the embodiments of the present invention, those skilled in the art or those skilled in the art having ordinary knowledge in the scope of the present invention described in the claims and It will be appreciated that various modifications and variations can be made in the present invention without departing from the scope of the art.

1 is a cross-sectional view showing a sound source analysis apparatus according to an embodiment of the present invention.

2 is a plan view illustrating a sound source image generated from an image generator of a grid generation camera.

3 is a plan view illustrating a virtual grid generated in a sound source image from a grid generator of a grid generation camera.

4 is a plan view of the noise measuring apparatus.

5 is a block diagram for explaining the operation of the sound source analysis apparatus according to the present embodiment.

6 is a plan view illustrating sound source information displayed on a display device.

7 is a plan view illustrating a noise map generated from a sound source shown in a display device.

8 to 10 are plan views illustrating various data displayed on the display device according to the present invention.

Claims (6)

A grid generation camera including an image generator for generating a sound source image by photographing a sound source and a grid generator for generating a grid-shaped image grid for dividing the sound source image into a plurality of noise regions in the sound source image; A display device connected to the grid generating camera to display the sound source image on which the grid is formed; A noise measuring device for outputting sound pressure data by measuring a sound pressure value SIL corresponding to the sound pressure level generated from the sound source, a sound pressure level generated from the sound source, and a noise value SPL including noise around the sound source; And And a data processing system for processing the respective sound pressure data. According to claim 1, wherein the noise measuring device A base body having a bar shape; At least two noise measurement microphones disposed in the base body for measuring the sound pressure value and the noise value; A distance measuring sensor disposed on the base body and measuring a distance between the sound source and the noise measuring microphones; A sound source photographing camera disposed on the base body to photograph the sound source; And And a capture switch for operating the distance measuring sensor, the sound source photographing camera, and the noise measuring microphones. The method of claim 2, The noise measuring microphones include a first microphone and the second microphone for measuring the sound pressure value (SIL) and the noise value (SPL). The method of claim 2, And a light providing unit disposed on the base body and providing light to the sound source to operate the camera in a dark place. The method of claim 1, The data processing system further comprises a data storage unit for storing the sound pressure value (SIL), the noise value (SPL), the measurement distance data, and the frequency characteristic data of the sound source. The method of claim 5, The data processing system may further include a data comparator comparing the past data stored in the data storage unit in the past with the current data stored in the data storage unit to determine whether there is an abnormality of the sound source.
KR1020090036433A 2009-04-27 2009-04-27 Apparatus for analyzing sound source KR20100117793A (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110470379A (en) * 2019-08-23 2019-11-19 武汉理工大学 A kind of substation's movable-type intelligent noise continuous collecting system
WO2020145417A1 (en) * 2019-01-07 2020-07-16 엘지전자 주식회사 Robot
CN115638876A (en) * 2022-12-14 2023-01-24 北京英视睿达科技股份有限公司 Noise calculation method, device, equipment and storage medium based on high-density grid
KR102574605B1 (en) * 2022-05-12 2023-09-06 주식회사 삼우에이엔씨 Method, apparatus and computer program for classifying audio data and measuring noise level using video data and audio data
CN117395588A (en) * 2023-12-11 2024-01-12 苏州清听声学科技有限公司 Sound field testing method and system for directional sound production equipment

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020145417A1 (en) * 2019-01-07 2020-07-16 엘지전자 주식회사 Robot
US11654575B2 (en) 2019-01-07 2023-05-23 Lg Electronics Inc. Robot
CN110470379A (en) * 2019-08-23 2019-11-19 武汉理工大学 A kind of substation's movable-type intelligent noise continuous collecting system
KR102574605B1 (en) * 2022-05-12 2023-09-06 주식회사 삼우에이엔씨 Method, apparatus and computer program for classifying audio data and measuring noise level using video data and audio data
CN115638876A (en) * 2022-12-14 2023-01-24 北京英视睿达科技股份有限公司 Noise calculation method, device, equipment and storage medium based on high-density grid
CN117395588A (en) * 2023-12-11 2024-01-12 苏州清听声学科技有限公司 Sound field testing method and system for directional sound production equipment
CN117395588B (en) * 2023-12-11 2024-03-26 苏州清听声学科技有限公司 Sound field testing method and system for directional sound production equipment

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