About PAcalculate
28 calculators (47 calculations) for pro-audio sound reinforcement and lighting, as well as reference info and utilities. A super handy tool for people dealing with PA, sound reinforcement, sound systems,...
28 calculators (47 calculations) for pro-audio sound reinforcement and lighting, as well as reference info and utilities. A super handy tool for people dealing with PA, sound reinforcement, sound systems, electro-acoustics, pro-audio and lighting Acoustics - SPL (sound pressure level) - SPL sum with phase, distance or time difference - Air absorption attenuation for a given humidity, temperature, frequency and distance - Ceiling speaker coverage - Time «» Distance - Audio frequency «» Wavelength (includes lambda/2 and 2*lambda/3 for line arrays or subwoofer arrays) - Transition distance for line arrays (near to far field) - End-fire and broadside array subwoofer modelling Audio electronics - dBu «» dBV «» Volts - Q «» B/W (bandwidth) - Limiter threshold, attack&releases times - Amplifier gain Cabling - Speaker cable: low impedance, high impedance (constant voltage line, 70V/100V). Calculates energy and level loss, system damping factor Lights DMX channel, RGB/RGBW/RGBA and CMY Useful reference info such as pinouts (proaudio and lighting) and graphs Utilities: Inclinometer, Flashlight / light with selectable intermittence (uses camera permission) Latest news from DoctorProAudio.com
Version History - SPL sum calculator now allows summing with phase distance or time difference - The flashlight / light can now flash at two speeds for signalling use 1.3.6 May 26 - Faster array simulators. Maps now default to 50m - Fixed inclinometer format in landscape mode - Format unchanged with virtual keyboard - You can choose a language in your phone's settings (to set one different from the phone's default) - Various minor improvements - 1.3.5 fixes inclinometer on some devices 1.3.5 12/22/2025 - Faster array simulators. Maps now default to 50m - Fixed inclinometer format in landscape mode - Format unchanged with virtual keyboard - You can choose a language in your phone's settings (to set one different from the phone's default) - Various minor improvements 1.3.4 12/18/2025 - New proyector calculator - Broadside simulator defaults to 1/4 wavelength - BPM calculator adds dot option and 1/32 crochet length - Alleviates issues with dark mode on some devices - Assorted minor improvements 1.3.3 03/06/2025 - Broadside (line) array modelling with electronic or mechanical arcing and steering as well as end-fire/gradient(cardioid) lines - Array modelling is now more insightful: provides a left/right mirror image option and 3 new graphics (isobar display, coverage map and multi-angle frequency responses) as well as a horizontal viewing mode that packs more information on the screen - Easier introduction of values below 1 in Q «» BW calculator - Fixed main menu link to news and educational content - Additional support for larger system fonts 1.3.2 03/08/2022 - Faster user interface- Larger screen real state for iPhones with notch - Better compatibility with larger font sizes - 32-bit option for recording file size calculator - End-fire calculator now shows correct freq for distances other than 1 - Default temperature is now 20 deg (sound speed more like standard values) - A number of small improvements 1.3.1 11/15/2021 - New calculator: end-fire arrays, with F2R frequency and polar response - 1/4λ option on Frequency «» wavelength calculators - 1-click faster access to audio calculators (menu pre-expanded) - Assorted UI improvements 1.3.0 08/01/2019 1.2.7 - New feature: limiter attack & release times - Bug fix: VIRP calculation now shows R when Power is the last variable entered - Celsius «» farenheit conversion now active on Time «» distance and Frequency «» wavelength calculators - UI improvements 1.2.6 - UI improvements - Minor bug fix (ceiling speaker calculator buttons) - Backdoor link to old Powersoft limiter calculator in main menu info ("i") page 1.2.5 - Equivalent frequency (Time » Distance calculator) and time (Frequency » λ calculator) are shown - TAP tempo feature in BPM calculator, can be linked to BPM results - Operational and UI improvements 1.2.7 05/31/2018 1.2.6 - UI improvements - Minor bug fix (ceiling speaker calculator buttons) - Backdoor link to old Powersoft limiter calculator in main menu info ("i") page 1.2.5 - Equivalent frequency (Time » Distance calculator) and time (Frequency » λ calculator) are shown - TAP tempo feature in BPM calculator, can be linked to BPM results - Operational and UI improvements 1.2.6 12/16/2017 - Equivalent frequency (Time » Distance calculator) and time (Frequency » λ calculator) are shown - TAP tempo feature in BPM calculator, can be linked to BPM results - Operational and UI improvements 1.2.5 11/26/2017 Array transition distance calculator (near field to far field) Output threshold for limiters (Powersoft) Operational improvements 1.2.4 10/03/2016 v1.2.3 Fix issue with calculators' info buttons on some devices v1.2.2 Assorted operational improvements v1.2.1 New flashlight functionalities for low light use Q «» B/W calculator allows for easier entry of decimal points Lighter graphics Localisation improvements (courtesy of Manlio Bonfadini!) New language: italiano v1.2.0 New calculator: Keyboard note to Hz Output voltage now displayed in Limiter calculator Pre-calculation (for one-way calculators) Assorted improvements 1.2.3 06/10/2016 v1.2.2 Assorted operational improvements v1.2.1 New flashlight functionalities for low light use Q «» B/W calculator allows for easier entry of decimal points Lighter graphics Localisation improvements (courtesy of Manlio Bonfadini!) New language: italiano v1.2.0 New calculator: Keyboard note to Hz Output voltage now displayed in Limiter calculator Pre-calculation (for one-way calculators) Assorted improvements 1.2.2 05/29/2016 New flashlight functionalities for low light use Q «» B/W calculator allows for easier entry of decimal points Now even lighter Localization improvements (courtesy of Manlio Bonfadini) New language: italiano Back feature from externals screens 1.2.1 03/17/2016 New calculator: Keyboard note to Hz Output voltage now displayed in Limiter calculator Pre-calculation (for one-way calculators) Assorted improvements 1.2.0 10/04/2015 v.1.1.1 Limiter, fixed threshold for 2496 processor v1.1.0 3 new calculators: Limiter threshold, amplifier gain and multi-channel recording file size «» time 2 new pinouts; Speakon NL4, NL8 1 new utility: Flashlight Inclinometer can now be paused (angles are kept on screen) 64-bit operation on devices with A7/A8 processor (iPhone 5, iPhone 6/6+, iPad Air/Mini2/Mini3) Assorted formatting and operational improvements 1.1.1 03/12/2015 3 new calculators: Limiter threshold, amplifier gain and multi-channel recording file size «» time 2 new pinouts; Speakon NL4, NL8 1 new utility: Flashlight Inclinometer can now be paused (angles are kept on screen) 64-bit operation on devices with A7/A8 processor (iPhone 5, iPhone 6/6+, iPad Air/Mini2/Mini3) Assorted formatting and operational improvements 1.1.0 03/05/2015 Font issue 1.0.4.4341 11/03/2014 Minor improvements Fix Chinese language 1.0.4.434 10/30/2014 Minor formatting improvements 1.0.4.234 07/23/2014 Assorted improvements Larger buttons New languages: French, German, Russian Pinouts: DB25 Graphs: Fletcher&Munson 1.0.4.134 07/19/2014 Unit/value local pre-assignments 1.0.3.1 02/19/2014 Better styling for larger screens Errors in pinouts fixed, clearer info 1.0.2 02/07/2014 0.1.5 01/21/2014
Previous Versions
Here you can find the changelog of PAcalculate since it was posted on our website on 2023-09-07 08:51:20.
The latest version is 1.3.6 and it was updated on 2026-06-24 15:59:49. See below the changes in each version.
PAcalculate version 1.3.6
Updated At: 2026-06-03
Changes: Version History - SPL sum calculator now allows summing with phase distance or time difference
- The flashlight / light can now flash at two speeds for signalling use 1.3.6 May 26 - Faster array simulators. Maps now default to 50m
- Fixed inclinometer format in landscape mode
- Format unchanged with virtual keyboard
- You can choose a language in your phone's settings (to set one different from the phone's default)
- Various minor improvements
- 1.3.5 fixes inclinometer on some devices 1.3.5 12/22/2025 - Faster array simulators. Maps now default to 50m
- Fixed inclinometer format in landscape mode
- Format unchanged with virtual keyboard
- You can choose a language in your phone's settings (to set one different from the phone's default)
- Various minor improvements 1.3.4 12/18/2025 - New proyector calculator
- Broadside simulator defaults to 1/4 wavelength
- BPM calculator adds dot option and 1/32 crochet length
- Alleviates issues with dark mode on some devices
- Assorted minor improvements 1.3.3 03/06/2025 - Broadside (line) array modelling with electronic or mechanical arcing and steering as well as end-fire/gradient(cardioid) lines
- Array modelling is now more insightful: provides a left/right mirror image option and 3 new graphics (isobar display, coverage map and multi-angle frequency responses) as well as a horizontal viewing mode that packs more information on the screen
- Easier introduction of values below 1 in Q «» BW calculator
- Fixed main menu link to news and educational content
- Additional support for larger system fonts 1.3.2 03/08/2022 - Faster user interface- Larger screen real state for iPhones with notch
- Better compatibility with larger font sizes
- 32-bit option for recording file size calculator
- End-fire calculator now shows correct freq for distances other than 1
- Default temperature is now 20 deg (sound speed more like standard values)
- A number of small improvements 1.3.1 11/15/2021 - New calculator: end-fire arrays, with F2R frequency and polar response
- 1/4λ option on Frequency «» wavelength calculators
- 1-click faster access to audio calculators (menu pre-expanded)
- Assorted UI improvements 1.3.0 08/01/2019 1.2.7
- New feature: limiter attack & release times
- Bug fix: VIRP calculation now shows R when Power is the last variable entered
- Celsius «» farenheit conversion now active on Time «» distance and Frequency «» wavelength calculators
- UI improvements
1.2.6
- UI improvements
- Minor bug fix (ceiling speaker calculator buttons)
- Backdoor link to old Powersoft limiter calculator in main menu info ("i") page
1.2.5
- Equivalent frequency (Time » Distance calculator) and time (Frequency » λ calculator) are shown
- TAP tempo feature in BPM calculator, can be linked to BPM results
- Operational and UI improvements 1.2.7 05/31/2018 1.2.6
- UI improvements
- Minor bug fix (ceiling speaker calculator buttons)
- Backdoor link to old Powersoft limiter calculator in main menu info ("i") page
1.2.5
- Equivalent frequency (Time » Distance calculator) and time (Frequency » λ calculator) are shown
- TAP tempo feature in BPM calculator, can be linked to BPM results
- Operational and UI improvements 1.2.6 12/16/2017 - Equivalent frequency (Time » Distance calculator) and time (Frequency » λ calculator) are shown
- TAP tempo feature in BPM calculator, can be linked to BPM results
- Operational and UI improvements 1.2.5 11/26/2017 Array transition distance calculator (near field to far field)
Output threshold for limiters (Powersoft)
Operational improvements 1.2.4 10/03/2016 v1.2.3
Fix issue with calculators' info buttons on some devices
v1.2.2
Assorted operational improvements
v1.2.1
New flashlight functionalities for low light use
Q «» B/W calculator allows for easier entry of decimal points
Lighter graphics
Localisation improvements (courtesy of Manlio Bonfadini!)
New language: italiano
v1.2.0
New calculator: Keyboard note to Hz
Output voltage now displayed in Limiter calculator
Pre-calculation (for one-way calculators)
Assorted improvements 1.2.3 06/10/2016 v1.2.2
Assorted operational improvements
v1.2.1
New flashlight functionalities for low light use
Q «» B/W calculator allows for easier entry of decimal points
Lighter graphics
Localisation improvements (courtesy of Manlio Bonfadini!)
New language: italiano
v1.2.0
New calculator: Keyboard note to Hz
Output voltage now displayed in Limiter calculator
Pre-calculation (for one-way calculators)
Assorted improvements 1.2.2 05/29/2016 New flashlight functionalities for low light use
Q «» B/W calculator allows for easier entry of decimal points
Now even lighter
Localization improvements (courtesy of Manlio Bonfadini)
New language: italiano
Back feature from externals screens 1.2.1 03/17/2016 New calculator: Keyboard note to Hz
Output voltage now displayed in Limiter calculator
Pre-calculation (for one-way calculators)
Assorted improvements 1.2.0 10/04/2015 v.1.1.1
Limiter, fixed threshold for 2496 processor
v1.1.0
3 new calculators: Limiter threshold, amplifier gain and multi-channel recording file size «» time
2 new pinouts; Speakon NL4, NL8
1 new utility: Flashlight
Inclinometer can now be paused (angles are kept on screen)
64-bit operation on devices with A7/A8 processor (iPhone 5, iPhone 6/6+, iPad Air/Mini2/Mini3)
Assorted formatting and operational improvements 1.1.1 03/12/2015 3 new calculators: Limiter threshold, amplifier gain and multi-channel recording file size «» time
2 new pinouts; Speakon NL4, NL8
1 new utility: Flashlight
Inclinometer can now be paused (angles are kept on screen)
64-bit operation on devices with A7/A8 processor (iPhone 5, iPhone 6/6+, iPad Air/Mini2/Mini3)
Assorted formatting and operational improvements 1.1.0 03/05/2015 Font issue 1.0.4.4341 11/03/2014 Minor improvements
Fix Chinese language 1.0.4.434 10/30/2014 Minor formatting improvements 1.0.4.234 07/23/2014 Assorted improvements
Larger buttons
New languages: French, German, Russian
Pinouts: DB25
Graphs: Fletcher&Munson 1.0.4.134 07/19/2014 Unit/value local pre-assignments 1.0.3.1 02/19/2014 Better styling for larger screens
Errors in pinouts fixed, clearer info 1.0.2 02/07/2014 0.1.5 01/21/2014
PAcalculate version 1.3.5
Updated At: 2025-12-22
Changes: - Faster array simulators. Maps now default to 50m
- Fixed inclinometer format in landscape mode
- Format unchanged with virtual keyboard
- You can choose a language in your phone's settings (to set one different from the phone's default)
- Various minor improvements
- 1.3.5 fixes inclinometer on some devices
PAcalculate version 1.3.3
Updated At: 2025-03-06
Changes: Mar 6, 2025
Version 1.3.3
- New proyector calculator
- Broadside simulator defaults to 1/4 wavelength
- BPM calculator adds dot option and 1/32 crochet length
- Alleviates issues with dark mode on some devices
- Assorted minor improvements
PAcalculate version 1.3.2
Updated At: 2022-03-08
Changes: Mar 8, 2022
Version 1.3.2
- Broadside (line) array modelling with electronic or mechanical arcing and steering as well as end-fire/gradient(cardioid) lines
- Array modelling is now more insightful: provides a left/right mirror image option and 3 new graphics (isobar display, coverage map and multi-angle frequency responses) as well as a horizontal viewing mode that packs more information on the screen
- Easier introduction of values below 1 in Q «» BW calculator
- Fixed main menu link to news and educational content
- Additional support for larger system fonts
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