PAcalculate vs LanSplit

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

Ever connected to your digital mixer's Wi-Fi and lost internet, because your device insists on sending traffic out through a Wi-Fi network that has none? LanSplit fixes this with a single switch: - Traffic to the Wi-Fi LAN (mixer, stage box, audio gear) → stays on Wi-Fi - All internet (LINE, YouTube, streaming, video calls) → goes out via mobile data - No SIM or mobile data off → internet falls back to Wi-Fi automatically Both paths work at the same time. No switching networks, no manual IP setup, no jailbreak. LanSplit Link — share internet with a tablet that has no SIM Install LanSplit on both devices. The phone with a SIM taps "Share" and gets a QR plus a short 8-character code. The tablet taps "Link" and scans the QR — or just types the code, and the app finds the sharing phone on the network automatically. The tablet instantly gets the phone's mobile internet over the same mixer Wi-Fi, while still controlling the console. The pairing code stays the same, so you pair once. A clear status line tells you when internet is actually working. Who it's for - Sound engineers controlling digital mixing consoles from iPhone/iPad - Event crews who must join equipment Wi-Fi while staying online - Anyone who needs to connect to a Wi-Fi network without internet, but stay online via SIM How it works LanSplit creates a local split tunnel inside your device and picks the route for each connection itself — so it behaves identically on every device, regardless of the system's network preferences. Privacy - No external server — your traffic never passes through anyone's machine but the normal destination - Nothing collected, logged, or shared - No ads, no analytics, no account required Note: LanSplit is not a VPN service for changing your IP, hiding your identity, or accessing geo-restricted content. It is a device-local network routing tool. Internet sharing (LanSplit Link) works only between devices running the app on the same Wi-Fi network, paired with a local code — it is not a public hotspot. By Preecha Music — built by live-sound people, for live-sound people.