PAcalculate vs Octet Network Toolkit

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

Octet Network Toolkit is an all-in-one network diagnostics toolkit for network engineers, infrastructure teams and learners. From subnet math to live diagnostics, everything you need in the field is in one app. ■ Calculators (on-device, free) ・IPv4 subnet calculator: CIDR / subnet mask / broadcast / host range / binary view / subnet splitting ・IPv6 calculator: compressed and expanded forms / address count / EUI-64 generation ・Tap any result to copy it ■ Diagnostic tools ・DNS lookup (A/AAAA/MX/TXT and more), reverse lookup (PTR), whois ・SSL certificate check (chain, expiry, cipher suite), HTTP headers ・Public IP lookup ・ping (reachability and RTT), traceroute (path tracing) ・TCP port scan, LAN device scan (Bonjour), Wake-on-LAN ・MAC vendor lookup (offline OUI database) ■ Privacy first ・No account required ・No ads, no tracking ・Subnet calculations run entirely on your device (Diagnostic tools, by their nature, communicate with the targets you specify and servers along the network path.) ■ Octet Pro Unlock all diagnostic tools, unlimited history, iCloud history sync across devices, and SSL certificate expiry reminders. Choose a monthly subscription or a one-time purchase (Universal Purchase: buy once, use on iPhone, iPad and Mac). Available in English and Japanese — choose your language on first launch or anytime in Settings. The diagnostic features are intended for use on systems you are authorized to test and for legitimate purposes. Please comply with the target system's terms of use, your organization's policies and applicable laws.