the swedish work environment authority · 2017. 12. 11. · •”app of today” macworld...
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The Swedish Work Environment Authority
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The Swedish Work Environment Authority
Noise application tool
Magnus Moström and Stefan Nygård
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Noise
A smartphone application by Swedish Work Environment Authority
There is a need to estimate the sound pressure level in different situations
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Main reason for the app development / Targeted audience
Branding
Encourage working environment
Reach ”new” audience
Awareness about noise
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Noise - iOS version
• Release date: February 2011
• Downloads: 319 000+
• Developing costs: ≈ 28 000 €
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Noise - Android version
• Release date: February 2012
• Downloads: 115 000+
• Developing costs: ≈ 20 000 €
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Android events
iOS events
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One minute of fame
• 75 000+ downloads the first 2 weeks (iOS)
• Nominated for the Swedish Design Price 2011
• Used in TV during Skiing World Championships
• One of the first Swedish Authorities in App Store
• ”App of today” MacWorld magazine
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Dissemination strategy
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I often use the Noise App during inspections. It’s a fantastic tool, even if it’s not 100 % reliable. If we got a high noise level I refer to occupational health services.
Quote from Inspector Christer
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Specification - Estimation of sound pressure level – End user
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The logarithmic decibel scale
1 90 dB
2 93 dB
10 100 dB
100 110 dB
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A-weighted sound pressure level
Auditory threshold
Background noise office
Conversation
Rock concert
Metal workshop
Pain threshold
• Limited to 40 – 95 dB
• Depends on cell phone (brand and model)
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Frequency response - comparison
200 Hz – 5000 Hz
IEC 61672-1, class 2
sound level meter
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Development time
• Development of main code: ≈ 4 months
• Calibration of each model: ≈ 2 - 8 hours
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Main challenges to the app development
• Calibration of different cell phones (Brand and model)
‒ Frequency range
‒ Dynamic range
• Update of cell phone operating system
• Approval from App Store
• Users demanding more
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Other challenges
• Review-time by Apple when update (7 - 10 days)
• Answer all comments in App Store and Google Play
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Illuminance and contrast meter for iOS
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Ljus for iOS
• Release date: January 2012
• Downloads: 13 000+
• Developing costs: ≈ 50 000 €
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Web app – Sanction-charges-avoider, www.avgiftsundvikaren.se
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A part of a major campaign
First, we launched sanction charges. Now we help you to avoid them.
• Developing costs: ≈ 20 000 €
• Used 6500 times the first 2 months.
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Up coming web app – Systematic Work Environment Quiz
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Support
• Is there an interest to cooperate in order to further develop / maintain the noise app ?
‒ EU-OSHA
‒ Commission
‒ Others?
• Is there an interest to translate the app to other languages than Swedish and English?
• Other suggestions?
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THANK YOU !
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QUESTIONS ?
Magnus Moström Stefan Nygård