Presentation 01. A way to Measure Community Noise in a Complex
Contents
1. lowes 10 100 1000 10000 100000 Hz RB qr o2 00000 Hz 3 1 73 3Z d gn TN BY E IF 5p TO mE dB gt KD TT NO UJ I UA 10 100 1000 10000 100000 Hz Function of AS 40PA1 Dividing the useful from the useless data O From all2. 180 Sound direction Area Targeting Make judgment of useful or useless data from sound direction in every 1 sec of LAed Example validation range 0 deg to 100 deg Time LAeg 15 Direction Target hh mm ss dB deg 10 22 05 10 22 06 64 9 10 22 10 Editing of Measuring Values Adjust any PL range exactly Adjust useful useless range in 1 sec steps on the measuring graph Siren Factory noise arnboutarn Adjustable range Editing of Calculated Values E By checking calculated values on a list of collected data and listening to the recorded sounds users make judgment of useful or useless data To easily remove calculated value including abnormal noises 10 00 00 Making useful Or 10 20 00 s 10 30 00 63 8 Sound O O TW reproduction available on the table Microphones for Detection of Direction AN 37 detects a direction of the sound source B Tri axial microphones Compact device 25 cm interval from a center pole m Weather resistant The direction data IS used for 4 exclusion of some noise un sources G Directional Data of Sound Source Directions of sound sources are detected by tri axial microphones every second The data are used to locate and identify sounds in a specified direction Detection of Sound Direction Principle We make use of time difference o
3. hd Show period daily report SA 50PAI Software Event total screem AS5 5U0PAT Client Program File Tool Help Im Gategoryl Airports Status ABC Park Marigold Airport E Seed Station Event Summary Daily count Monthly count Yearly count Period summary leaf Station Peanut Airport 7 E x H asc aan 4 2008 04 23 00 00 00 2008 04 23 23 59 59 gt aL data v Close Site ABC Park Last collect 2008 09 13 18 51 Disp period 2008 04 25 00 00 00 2008 04 23 23 53 58 395CounE Last update 2008 09 13 18 51 ExpT 2008 04 23 09 15 09 8 48 i 2008 04 23 09 15 45 ABC 20 5 48 68 5 0 0 0 0 H 2008 04 23 09 20 50 16 5 47 80 1 0 0 D z Moise events a i i Direction vector Show noise event report TEETH Ie Show multiple stations event report N Av form vector 38 90 TTTTTTTTTTTTTTTTTTTTTTTTTTH i3 dB Daily reports Di B 0 et Show daily report pee Lenath 0 65 30 10098 Monthly reports EE EP I ld oe Show monthly report Ww E Cursor position 09 18 04 000 0
4. O LN1 LN2 LN3 LN4 LN5 L5 L10 L50 L90 L95 Leq 10min m Measured values Original data that are used for calculated values Ll Leq 1sec O Lea 100msec Lp 100msec O Sound direction In every 1 sec B Sound recording files MP3 or WAV 8 Other data for administration AS 40PA1 Function OO OO Q Data make available Measuring data are made up in accordance with measuring values and calculated values periodically Lists of calculated values are available B Daily Monthly Yearly Function of AS 40PA1 O Collected data Percentile sound level L5 L10 L50 L90 L95 Every hour Every day m Equivalent continuous sound level Led Every hour Every day Equivalent continuous sound level with time periods O Leg day Leq evening Leg night O Ldn calculated with two periods Lden calculated with three periods Flowchart of AS 40PA1 Data Availability Calculated values for Daily collected Monthly Yearly 10 min data collected data collected data Calculated Calculated values 10 min EN collected data Calculated values 10 min Cumulative collected data are calculated from the previous collected data Conclusions O Flexible O Combines sound meteorological and location data with accurate timing O Sound can be saved Automatic or manual exclusion of non important events Data retrieval by LAN Wirelss Thumb drive Requirement
5. OR Lp eee ie Mar mr zi Mm FI TER HL HE R 140 Ferrite cores 32 Frequency Response with Windscreen gp esuodsey Wind noise Reduction WS 13 30 120 1 O 9A9 9SIOU puly 3911911910818 V gt 00 o C 4 sa E u 00 D LL m s Wind speed 22 10m s Overall Frequency Response CO O GREEN DOTTED WITHOUT WINDSCREEN or COMPENSATION RED WITH WINDSCREEN but WITHOUT COMPENSATION 4 0 BLACK WITH WINDSCREEN and COMPENSATION 3 5 3 0 5 2 5 2 0 E 15 1 0 0 5 0 0 o 0 5 1 0 gt 1 5 b 2 0 Dd 2 3 0 3 5 4 0 10 100 1000 10000 100000 Frequency Hz IEC61672 1 JIS C 1509 1 Wind Wind Total Total screen screen Respouse expanded correction combined Wind uncertainty dB Screen e eml osl ml 0 ml os of m 03 of oof 9 of o2 02 z o m mi oo 02 03 Issues of Environmental Noise Monitoring For instance noise monitoring at the boundary between a factory and a road amp residential area Undesirable additional ambient sounds Manual Removal of Undesirable Sou
6. T Annual reports Elevation 15 3U 7098 Show annual report Dir 26 60 ETT Period reports 5 Ign 2 90 4HHE Show period daily report 52 5456 5600 02 04 06 08 1012 14 1618 The End
7. resistant gt EMC shielded gt Remote calibration check Features Options available to extend NA 37 functions O Automatically adjust clock L Automatically record measuring coordinates L Check data at measuring site L Receive and log weather information Features Communication interface BH LAN m RS 232 C m Modem through analog public line L Sound recording functions when using optional a SOry NX 37WR MP3 WAV format Level trigger interval trigger O Massive internal memory capacity B E g 40 days with 1 000 events day and sound recording with NX 37WR and MP3 format in 5 sec sampling L Data extraction m On line communication m USB memory stick available System Configuration Example MS 11 3 axis microphone Windows PC NA 37 main body Microphone system Measuring Microphone and Windscreen Measuring Microphone O Microphone section O Compact windscreen L1 Built in calibration sound Source Built in heater to prevent condensation O Bird spike 16 7 Microphone MS 11 structure Microphone Cartrid RS 9187AS7M 920 8 24 107 8 141 3 All weather Windscreen Structure Outdoor Microphone MS 11 Preamplifier with Integrated sound source and heater Construction principle of WS 13 Unit 7P microphone extension cable
8. A Way to Measure Community Noise tn a Complex Acoustical Environment Richard J Peppin ocantek Inc www Scantekinc com 800 224 3813 PeppinR asme org 301 910 2813 cell qii b qu 1 ul III Environmental Noise Monitoring System Used for Road traffic noise Construction noise 1 Rail yard and rail pass by noise O Factory noise The system allows you to O Collect environmental noise data O Store data O Recall and analyze data The Environmental Noise System Environmental Noise Monitor O Sound Level Meter O Outdoor Microphone Set O Environmental Noise Processing Program Noise Identification Unit to detect a direction from sound source Data Processing O Environmental noise data processing software f NN D ONE lt NA 3 Front Panel BY RION NA 37 ENVIRONMENTAL SOUND MONITOR La ID Date 15 Laa LE Dur ae gt IL 11 23 23 70 04B 80 048 10 0 SOdB SE 2A AC IN c RION CO LTD C USB USB A MEMORY PRINTER a FUS NA 83 SERIAL 1 SERI EC IN n AC DC OUT m e gt AC IN DC IN 12V 100V 240M Sound Level Meter 83 for na 37 1 O Compliant with IEC 61672 1 Class 1 with all weather windscreen and microphone extension cable Periodic calibration just means E a small unit gt Rain and wind
9. data collected m Making up useful data Making up useless data The RION Environmental Noise System Environmental Noise Monitor Environmental Noise Processing Program 37 Sound Level Meter Class 1 NA 83 O0 Noise Identification Unit to detect a direction from sound source AN 37 O Data Processing Environmental noise data processing software AS 40PA1 Overview of the NA 36 system Operation BY RION _NA 37 ENVIRONMENTAL SOUND YONITOR Keys Color LCD Sound Level Meter NA 83 2007 10 15 11 23 50 10 7 U gt 70 0cB Last ID Date 15 LE Dur 3N 70 04B 83 AC DC OUT LY Identification Unit AN 37 GPS module x IN AC DC IN 12V 100V 240V SSR Receiver a AN 37R LAN RS 232 C DC Power AC Power Battery Unit Sound Level Meter 83 for na 37 2 AC ndi Industrial plant 7P Microphone noise monitor ing Extension Gable EC 04 series Sound Level Meter NA 83 Ser ial RS 2320 em Public information System Features of NA 37 Sound Level Meter section NA 83 Applicable to EC 61672 1 Class1 CE marked Applicable for Japanese Measurement Law Japanese homologation system type approval and accepted in all countries Single large dynamic range 110 dB Features of NA 37 L Measures against power failure B internal battery to r
10. ent Program File Tool Help Gategory1 Airports Status ABC Park Marigold Airport Event Summary Daily count Monthly count Yearly count Period summary Peanut Airport lt 2008 06 z 2008 06 gt mmm C AEC Park Site Park Edit Disp period 2008 06 01 2008 06 30 Last update 2008 09 13 19 02 Sound Event gt gt A 2008 06 01 46 9 2008 06 02 44 0 44 0 44 0 59 4 38 1 3 2 0 0 0 0 53 7 2008 06 03 38 2 38 2 38 2 49 1 3 3 0 0 0 0 0 0 51 0 2008 06 04 41 2 41 2 41 2 52 6 3 0 0 0 0 0 0 0 52 0 2008 06 05 39 3 38 3 38 3 52 0 21 1 0 0 0 0 0 0 53 4 2008 06 06 37 9 37 9 37 9 51 9 12 1 0 0 0 0 0 0 48 9 eee ae eT x 2008 06 07 32 0 32 0 32 0 46 9 2 3 0 0 0 0 0 0 47 5 2008 06 08 30 0 30 0 30 0 47 9 3 0 0 0 0 0 0 0 49 0 Daily reports pum lI 2008 06 09 38 2 38 2 38 2 52 8 5 7 0 0 0 0 oo 49 4 2008 06 10 Tue 43 1 43 1 43 1 56 7 10 2 0 0 0 0 0 0 50 8 2008 06 11 47 6 47 6 47 6 61 8 73 8 0 0 0 0 0 0 51 1 2008 06 12 43 1 43 1 43 1 58 9 13 2 0 0 0 0 0 0 51 7 Annual reports 2008 06 13 Fri 41 7 41 7 41 7 57 6 3 7 0 0 0 0 0 0 53 8 Show annual report 2008 06 14 38 9 38 9 38 9 55 6 0 4 0 0 0 0 0 0 527 m e e e Noise events e Show noise event report e e e e e Show monthly repart e Period reports
11. ers 3 Clients owchart of AS 40PA1 Data Availability Calculated values nthly early for 10 min collected gt collected collected data data data 10 min rc MM rc MM 10 min collected data EUM 10 Cumulative collected data are calculated FOr IC DI CVIOU JHE SU Aircraft noise processing program NX 37B Automated aircraft sound identification m Automatic sound event detection m Sky sound detection by elevation angle data calculated by 2 microphone used correlation method m The distance of an aircraft is detected by receiving the intensity of a radar Signa leve Monitor microphon microphon es Cubicle Detection of peak noise event Detection procedure AS GN plus 10dB When a Maximum level exceed the threshold level When a Duration time exceed the specified time threshold Maximum level dB Threshold level Duration time time trigger event time Aircraft sound discrimination 3D sound arrival direction Three axis microphone System 0 57 mm Elevation angle 0 Directional angle 6 Pattern Analysis using sound arrival directions Typical sound arrival direction South east landing noise Above take off noise Reverse noise South west takeoff noise Car ground noise Wind noise PA1 Software SA 5 report screem AS 570PAT Cli
12. f which two microphones receive a sound We can get angle against the sound source from the time difference Waveform When sound arrives simultaneously at two M1 AN microphones 7o difference in 2 waveform at microphone Detection of Sound Direction Arrival time differences of a sound at microphones will occur except when the sound reaches the microphones simultaneously An angle of incidence against microphones is calculated from time differences between waveforms 1 Waveform Angle 9 is calculated from the time difference t Direction of Sound Tri axial microphones enable three dimensional detection of sound direction elevation and direction Tri axial direction identification device ow esy UD E Sound direction is calculated i KC v6 I Software for Review and Analysis Calculations of Lea Ly Interval mode Repeats measuring the first part of regular intervals iS Measuring Wait Measuring Wait Interval Interval For example we measure the first 10 min for every 1 hour Calculations of Leq L 1 Continuous mode Continuously measurement in every measurement interval Measuring Measuring A GG Measuring Interval Measuring interval For example we continuously measure every 1 hour AS 40PA1 Function Various data are extracted from NX 37A B X Calculated values Data that are calculated under NX 37A
13. igger File format MP3 WAV BHU Software for Results XP or Vista Software to allow a simple method to collecting measurement data show results of measurements It controls and sets up NA 37 Automatic data processing Allows data collection manual or automatic On line collection LAN O Off line collection when using USB memory 1 Allows maintenance by administrator O O O Features Options available to extend 37 functions Automatically adjust clock m Auto time adjustment function Automatically record measuring coordinates m With GPS module L Check data at measuring site Print out function When using USB printer Receive and log weather information Meteorological data logging function When using an exclusive meteorological meter Sound Recording Trigger recording Level trigger records sounds above a set threshold level Interval trigger records sound periodically m Manual trigger when START is pressed File format MP3 Stores massive amount of data because stored data are compressed m WAV Higher quality but takes more memory than MP3 format Recording time 5 to 60 sec when using level trigger each stored separately Internal memory has a capacity to store data for 40 days MP3 format 5 sec 1000 events in a day dB dB
14. nds from Time History I Removal range can be determined by trend of the sound level and the nature of the sound u AE Factory par Sirer noise nce Example Calculated Values for 10 min EE Collected data are calculated from 10 min O LN1 LN2 LN3 LN4 LN5 O L5 L10 L50 L90 L95 Leq 10min Calculated values are extracted from NX 37A When removing undesirable noises data are recalculated from measured values AS 40PA1 Noise exclusion Calculation Issue of Environmental Noise Measurements We want to remove undesirable sounds from objective sound source t is troublesome to remove undesirable sounds by listening to reproduced sounds Undesirable sound sources sounds comes from the other directions except that of objective sound We have automatic noise removal by sound direction Direction Detection Microphones Area Targeting Objective sounds are distinguished by sound directions Set microphones with directions toward a measuring object Out of object Setting Microphones Toward Object of Sound specify area of direction angle azimuth into that of objective sound in horizontal plane Example 60 to 60 degrees _ lt 90 Method of Noise Removal Automatic removal of noises coming from the other areas and directions than objective a area SPL a Factory noise Bark Time 180 deg
15. s for environmental sound monitor system Stability operation for long term m Stability operation of microphone in harsh outdoor location m Operation guarantee when power outage m Notification to server when abnormality occurs O High reliability of measured data Identification of targeted noise and manual or automatic removal of extraneous noise The re analysis and the post processing of the measured data should be able to be done easily DAY EVENING NIGHT Metrics Can be Calculated i j I G FY I I I I 9II II III HI I I II I Z I9I I I I I IIIIIIIII III U O QQOecCcC L Ldn Dividing one day into two time periods day and night and calculated with Leq Lder Dividing one day into three time periods day evening and night and calculated with Lea vening e ei Reference Function of AS 40PAL List of collected data Graph of collected data Printout of lists Export data in text file O Replay of sound Environmental Noise Processing Program NX 37A os O Calculated data Leq Interval mode and continuous mode Sampling interval 0 1 to 10 sec Measurement time 0 5 sec to 24 hours O Measurement data Leq 1sec Loen Lon Direction data in every 1 sec Weather data Daily reports Weekly reports SPL every 100ms Directional vector every 200ms ound recording Option NX 37WR Level trigger Interval trigger manual tr
16. un it at least 2 hours B Optional external battery B Auto shutdown and auto recovery It allows operation in areas with non uniform power supply FeatureS Of NA 37 m LAN c9 RS 232 C lt Modem through analog public line 5 X Sound recording functions when using optional accessory N MP3 WAV format m Level trigger interval trigger Massive internal memory capacity B 40 days with 1 000 events day and sound recording with NX 37WR and MP3 format in 5 sec sampling Data extraction On line communication m USB memory stick available X 5 0038 EAS LA ILE e LAEC7B 0 4 e LAEC10dB e AECI3dB 2x e LAEC15dB M E 02 041 ja gt Q RR EO lt x Es eut 0 3 O 04 0 5 5 10 15 20 25 30 35 40 45 50 duration s AS 40PA1 System Diagram NA 37 iii s NX 37A NA 37 NX 37A Server er Program Program NA 37 Data collection NX 37A Setting up and control of NX 37A Server Database Client can be in one PC and one of them can be in the other PC if necessary One license cov
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