Noise Guru: Decibel Meter

This app turns your iPhone into a professional sound level meter to precisely measure the sound pressure level (SPL).

○ CHOOSE YOUR DISPLAY FORMAT ○

〉Scale display to current noise level
〉Temporal graphs of ambient noise environment with fullscreen spectrogram support:
◆ Spectrogram: grayscale, heatmap, lava
◆ Linear: smooth or bar chart
◆ FFT plot with maximum & average values
〉Display customization:
◆ FFT resolution (1024, 2048, 4096, 8192)
◆ Fourier-transformation for Hanning Hamming, Blackman windows
◆ Scale: liner, logarithmic
◆ Octave (1, 1/3, 1/6)
〉Noise value display: mean & maximum value
◆ Noise measurement scale selection (ITU-R 468, A, B, C, Z)
◆ Display acceptable noise level for a typical environment: either display acceptable value or deviation from such, or typical location corresponding to observed noise level.


○ DB DOSIMETER ○

〉Keep track of noise you’re exposed to
〉Set acceptable noise standards: OSHA, NIOSH
〉Be informed if noise level exceeds acceptable typical threshold


○ HEARING TEST ○

〉Test your hearing to check for any hearing deficiencies you may be already experiencing
〉Keep a history of hearing tests to check for any changes in your hearing ability


○ EXPORT OPTIONS ○

〉Noise level value data: measurement scale (A,C,Z); mean, minimum, maximum, and peak value
〉Recording with geolocation coordinates or with location name in file title
〉Recording into WAV, SCV, PDF, HTML
〉DB Dosimeter data: employed standard (OSHA, NIOSH), threshold, step, TWA, dosage, estimated dosage


○ ADDITIONAL FEATURES ○

〉External microphone frequency calibration
〉Autosave audio recordings every 30 minutes
Export data to the Health app to keep your data safe & backed up


⌘ PREMIUM FEATURES ⌘

◆ Unlimited recording duration & number of noise level recordings ◆
◆ Monitor your hearing health over time by testing your hearing ◆
◆ Recognize sound events with AI ◆
◆ Measure noise in the background ◆
◆ Monitor noise pollution with DB Dosimeter ◆
◆ Superimpose noise recordings with video and geo-tagging ◆


“[..] perhaps as many as 40 million adults (24 percent)—have features of their hearing test that suggest hearing loss in one or both ears from exposure to loud noise. Researchers have also estimated that as many as 17 percent of teens (ages 12 to 19) have features of their hearing test suggestive of NIHL in one or both ears”
NIH report on noise-induced hearing loss, NIH Publication No. 14-4233, March 2014

Take control of your hearing health.
Once you partially lose hearing, you can’t get it back. Save yourself the expense & annoyance of having to buy expensive hearing aids later in life.

You can damage your hearing not only by attending loud music concerts, but by prolonged exposure to constant daily noise – such as at your workplace or while commuting on busy city streets, by rail, or air.

Use this app to check whether the noise you experience on a daily basis is safe for your hearing in the long term.
Check the loudness of music at a concert to see if you should wear noise-suppressing ear plugs to protect your hearing.


http://ilyasov.work/decibel/terms-of-use
http://ilyasov.work/decibel/privacy-policy