Permission Slip by CR 对比 NIOSH Sound Level Meter 的使用情况和统计数据

Permission Slip has submitted 2 million+ data deletion and opt-out requests on your behalf! Permission Slip gives you a powerful set of tools and automations, combined with human-powered support to make it simple to delete old or unwanted accounts, or to opt-out of the sale of your data. Featuring hundreds of companies ranging from health care and insurance, social media, shopping, dating apps, finance, news and more, Permission Slip helps you take back control of the data companies have about you. It’s no secret that companies are collecting, buying and selling data about us. We’ll show you what data companies collect so you can set boundaries and regain control over your personal information. We’ll act as your agent and demand the removal of your data, or request it not be sold for profit behind your back. Tell companies to stop selling your data We’ll file requests on your behalf, ordering companies to stop selling your personal information. Delete your data with a tap When it’s time to delete your data from a company’s database, Permission Slip will handle the requests for you. Save time with bulk requests Send requests to 50 companies at a time with bulk requests. Permission Slip was created by Consumer Reports, an independent, nonprofit that works with consumers to create a fair and just marketplace. We advocate for laws and company practices that put consumers first. Terms of Use: https://www.consumerreports.org/2015/01/user-agreement/ and https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

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NIOSH Sound Level Meter

This award-winning app combines the best features of professional sound level meters and noise dosimeters into a simple, easy-to-use package. - Developed by experienced acoustics engineers and hearing loss experts. - Completely FREE – No ads, no limited features, and no in-app purchases. - Tested and validated (accuracy ± 2 dBA) according to standards in a reverberant chamber at NIOSH acoustics lab – the only proper method to validate accuracy. - Trusted source and world-class expertise in noise and hearing research. - Meets Type 2 requirements of IEC 61672:3 SLM standard when used w/ external microphone.* - Provides the most relevant metrics found in professional sound instruments today. Averages such as LAeq and TWA, Max and Peak Levels, Noise Dose and Projected Dose according to NIOSH and OSHA standards, and all three major weighting networks (A, C, and Z). - Capability to calibrate either internal or external microphone. Reporting and Sharing data. - Up-to-date informational screens on what noises are considered hazardous, how to conduct a noise measurement, how to properly select a hearing protector, and guidelines for preventing hearing loss, all at the palm of your hand. - Excellent and timely support from NIOSH hearing experts. - Support for Apple's Health (Hearing) app. * Celestina M, Hrovat J, Kardous CA [2018]. Smartphone-based sound level measurement apps: Evaluation of compliance with international sound level meter standards. Applied Acoustics, 139:119-128. https://doi.org/10.1016/j.apacoust.2018.04.011 More resources (including instructional videos and a user manual), a science blog, FAQ, and information about how to interpret results can be found on the NIOSH SLM website https://www.cdc.gov/niosh/topics/noise/app.html