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分贝仪 (专业版)

评价:
价格: 免费 支持应用内购买
兼容性: iPhone, iPad & Apple Watch

应用排名历史

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应用说明

"The best way to meter sound levels" - AppAdvice

Decibel Meter Pro is full of features sound level meter with exclusive accuracy of measurements and integrated spectrum analyzer. Calibrated with professional dB meter.

The world is a noisy place: cars, power tools, crowds, machinery, and other common sources produce amounts of noise that can, with continued exposure, lead to permanent hearing loss. Sound level meters are useful for anyone who wants to avoid exposing their ears to harmful noise levels, but who wants to spend hundreds of dollars on one?

dB Meter is free app which provides professional-quality measurement results, calibrated using an actual Nor140 high-precision decibel meter. With dB Meter, you can measure ambient noise levels, save your measurements and their locations, and share your measurements with others. dB Meter couples utility with stylish design and a polished user experience: a powerful tool in a sleek package, and at a tiny fraction of the cost of professional sound level meters.

(Please note that dB Meter soundmeter app is not a replacement for professional devices and should be used for personal purposes only.)

FEATURES:
● Saves location data for each measurement.

● Save measurements with custom names and rename existing measurements.

● Export measurements in CSV or Audio format.

● Allows you to save, export and play back recorded measurements.

● Highly accurate measurements.

● Integrated Fully Functional Spectrum Analyzer

● Octave Band Real Time Analyzer

● FFT Plot (Fast Fourier Transform)

● Linear and logarithm scales

● Up to 16384 FFT size

● A lot of available window functions

● Tracking for max value

● Max and Min for any selected frequency

● Stunned graphics

Have any questions or suggestions? Write to us: support@dbmeterpro.com

Decibel Sound Meter Pro offers an optional monthly subscription:
Premium Mode Subscription for $0.99 per month. Payment will be charged to your iTunes Account at the confirmation of purchase. Your subscription will automatically renew unless auto-renew is turned off within your Account Settings, at least 24-hours before the end of the current month. Your iTunes account will be charged $0.99 for renewal within 24-hours prior to the end of the current period. Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user's Account Settings after purchase. View our Terms of Use here: http://dbmeterpro.com/terms.html

DB Chart
150-160 dB = Eardrum rupture
140 decibel = Aircraft carrier deck.
130 dB = Jet take-off (100 meters), gun blast at close range.
120 dB= Human pain threshold, loud rock concert.
110 decibel = Serious hearing damage if sustained for more than 1 hour.
100 dB = Serious hearing damage if sustained for more than 8 hours.
90 decibel = Likely hearing damage if sustained for more than 8 hours.
80 decibel = Potential but unlikely hearing damage if sustained for more than 8 hours.
70 dB = Just annoying, but probably safe.
60 dB= Typical conversational volume.
50 dB = A quiet, library conversation.
40 decibel = A whisper.
30 dB= Barely audible sound.
20 decibel= Threshold of human hearing.

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应用评价和评级

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4.5
4,344 条评价

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