Decibel Ultra pro
Sound Meter in perfection
$7.99
3.4for iPhone, iPad
Age Rating
Decibel Ultra pro Screenshots
About Decibel Ultra pro
• • • Decibel Ultra pro • • •
Would you like to know how loud is your music or your TV? Or is your neighbour to loud? With Decibel Ultra pro you know it exactly!
Decibel Ultra pro measures the volume and helps you figure out how big the noise level compared to reference values.
Calibrate with Decibel Ultra pro all your surround speakers to the same level.
Decibel Ultra pro measure the sound pressure level (SPL) in dB professional frequency weightings: A, B ,C, D ,Z and time weightings: Fast, Slow, Impulse.
- Perfect to tune guitars.
- Send the results quickly via email.
- Interested in how loud is the noise you?
- Via headphone jack supplied line output is calibrated to 94 dB at 0776 Vrms / 1000 Hz
- Ultra-precise measurement of frequencies, a sine of 1000.0 Hz appears really as 1000.0 Hz!
Decibel Ultra pro was calibrated with a Class 1 Sound Level Meter and calibrator! From device to device, it may still be fluctuations around a few dB (2-3 dB). The app set the device into a special, best possible measurement mode. The automatic gain control (AGC) will turn off to get clean measurement without distort signals. On some older devices, the AGC can not turned off by software, it will then automatically corrected in the calculation.
Depending on the unit generation, it varies how sensitive is the device. For example the current iOS devices e.g. iPhone 6 (plus) the internal microphone of an iOS device can not perform any measurement below 30 dB. Measurements below 40 dB with an external microphone or via the headphone jack supplied line output, are not possible with this current devices. The headset that came with the iOS device, cannot measure below about 44 dB. This is a limitation of the current device. But hey, 30 dB is already really sensitive!
Highly recommended is the MicW i436. It has a very linear frequency response and dynamic, ideal for precise professional measurements.
Continuous noise can be a potential hazard to your health!
I would like to thank the company MicW Audio and Synthax GmbH for their kind support.
Would you like to know how loud is your music or your TV? Or is your neighbour to loud? With Decibel Ultra pro you know it exactly!
Decibel Ultra pro measures the volume and helps you figure out how big the noise level compared to reference values.
Calibrate with Decibel Ultra pro all your surround speakers to the same level.
Decibel Ultra pro measure the sound pressure level (SPL) in dB professional frequency weightings: A, B ,C, D ,Z and time weightings: Fast, Slow, Impulse.
- Perfect to tune guitars.
- Send the results quickly via email.
- Interested in how loud is the noise you?
- Via headphone jack supplied line output is calibrated to 94 dB at 0776 Vrms / 1000 Hz
- Ultra-precise measurement of frequencies, a sine of 1000.0 Hz appears really as 1000.0 Hz!
Decibel Ultra pro was calibrated with a Class 1 Sound Level Meter and calibrator! From device to device, it may still be fluctuations around a few dB (2-3 dB). The app set the device into a special, best possible measurement mode. The automatic gain control (AGC) will turn off to get clean measurement without distort signals. On some older devices, the AGC can not turned off by software, it will then automatically corrected in the calculation.
Depending on the unit generation, it varies how sensitive is the device. For example the current iOS devices e.g. iPhone 6 (plus) the internal microphone of an iOS device can not perform any measurement below 30 dB. Measurements below 40 dB with an external microphone or via the headphone jack supplied line output, are not possible with this current devices. The headset that came with the iOS device, cannot measure below about 44 dB. This is a limitation of the current device. But hey, 30 dB is already really sensitive!
Highly recommended is the MicW i436. It has a very linear frequency response and dynamic, ideal for precise professional measurements.
Continuous noise can be a potential hazard to your health!
I would like to thank the company MicW Audio and Synthax GmbH for their kind support.
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What's New in the Latest Version 3.4
Last updated on Dec 8, 2017
Old Versions
- bug fixes
- calibration data for iPhone 8 and iPhone X
- support for iOS 8 - iOS 11.x
- calibration data for iPhone 8 and iPhone X
- support for iOS 8 - iOS 11.x
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Version History
3.4
Dec 8, 2017
- bug fixes
- calibration data for iPhone 8 and iPhone X
- support for iOS 8 - iOS 11.x
- calibration data for iPhone 8 and iPhone X
- support for iOS 8 - iOS 11.x
3.3
Jul 27, 2017
- Bug fixes general.
- Fix reset button.
- Better legibility.
- Better values report.
- Fix reset button.
- Better legibility.
- Better values report.
3.2
Dec 2, 2016
- support new devices
- bug fixes
- bug fixes
3.1
May 22, 2015
Bug fix:
- iPhone 6 calibration values
- slow / impulse time weighting
- location in measurement report
+ Improved visibility
+ faster start
- iPhone 6 calibration values
- slow / impulse time weighting
- location in measurement report
+ Improved visibility
+ faster start
3.0
Mar 1, 2015
- Bug fixes
+ Frequency lock
+ Improved visibility
+ 64 bit app on iOS devices with 64 bit processor
+ Frequency lock
+ Improved visibility
+ 64 bit app on iOS devices with 64 bit processor
2.9
Dec 31, 2014
- Bug fixes & improvements
+ Adaptation to iOS 8
+ Adaptation to new devices: iPhone 6 plus, iPhone 6, iPad Air 2, ipad mini 3
+ Adaptation to iOS 8
+ Adaptation to new devices: iPhone 6 plus, iPhone 6, iPad Air 2, ipad mini 3
2.2
Dec 18, 2013
- Important bug fix for the iPhone 4 (GSM Rev.A iPhone 4) Sorry!
- Various bug fixes, external microphones / calibration
+ Calibration in the setup possible
- Various bug fixes, external microphones / calibration
+ Calibration in the setup possible
2.1
Nov 21, 2013
• Text Translations
• Better Performance
• Less energy consumptive
• dB offset the window function
• Reset zeroes now only the values
• The app runs smooth on the iphone 4
• Integrated help texts and instructions
• Many small improvements bugs- and logic fixes
• Now with L1.0, L10.0, L50.0, L90.0 and L95.0 statistic values
• The site location is now only in the email configuration in Setup
• Trigger dB value and trigger counter in the email configuration in Setup
• Better Performance
• Less energy consumptive
• dB offset the window function
• Reset zeroes now only the values
• The app runs smooth on the iphone 4
• Integrated help texts and instructions
• Many small improvements bugs- and logic fixes
• Now with L1.0, L10.0, L50.0, L90.0 and L95.0 statistic values
• The site location is now only in the email configuration in Setup
• Trigger dB value and trigger counter in the email configuration in Setup
2.0
Oct 30, 2013
+ iOS 7 Supports
+ Complete new CORE
+ Real frequency measurement
+ True dB- A, B, C, D measurement!
+ Fast, Slow, Impuls weighting
+ LCPeak, LAE, LAeqt, LAFTeq, L01 - L99 measurements
+ frequency spectrum measurement
+ MicW i436 support.
+ tap on equalizer once for color change
+ tap twice for next equalizer mode
+ tap three times for History mode
+ Complete new CORE
+ Real frequency measurement
+ True dB- A, B, C, D measurement!
+ Fast, Slow, Impuls weighting
+ LCPeak, LAE, LAeqt, LAFTeq, L01 - L99 measurements
+ frequency spectrum measurement
+ MicW i436 support.
+ tap on equalizer once for color change
+ tap twice for next equalizer mode
+ tap three times for History mode
1.1
Mar 18, 2012
- Plus sign is displayed at the offset and values in the setup.
- code cleanup.
- iOS 5.1 tested.
- code cleanup.
- iOS 5.1 tested.
1.0
Mar 11, 2012
Decibel Ultra pro FAQ
Click here to learn how to download Decibel Ultra pro in restricted country or region.
Check the following list to see the minimum requirements of Decibel Ultra pro.
iPhone
iPad
Decibel Ultra pro supports English, French, German, Italian
