PAcalculate app: calculators for sound reinforcement and lighting; utilities and reference info

Free super handy multi-platform multi-lingual (English, French, German, Italian, Portuguese, Russian, simplified Chinese and Spanish) app with over 26 calculators 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, electroacoustics, pro-audio and lighting The app is very light (~1MB, like a typical mobile phone photo), works offline and uses no data bandwidth More than 42 calculations spread across 26 calculators: - SPL (sound pressure level). Enter sensitivity in dB SPL, power, number of loudspeakers, phase and distance - SPL sum - 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) - Line Array transition distance (near field to far field) - Subwoofer Array simulation : I