PAcalculate vs Vos Lite

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

Vos Lite 是一款专业的移动声学测量工具，Vos 系列的轻量版，集声级测量、实时频谱分析与混响时间测量于一体。 【核心功能】 • 实时声级 SPL：大数字读数、Max 峰值统计、多种测量模式 • RTA 实时频谱：实时观察频率成分分布 • 声谱图：时间-频率-强度可视化，信号变化一目了然 • RT60 混响时间：脉冲法测量房间混响，专业评估声学特性 • Mag 频响测量：幅频/相位曲线，1/N 倍频程平滑 • 信号发生器：多波形输出，方便本机扫频测试 【特色】 • 横屏专业测量界面，为手机场景优化 • 支持导出测量报告 • 音频仅在设备本地处理，不录制、不上传 【适用场景】 室内声学检查、音响系统调试、噪音评估、声学教学与学习。 注：手机麦克风硬件因机型而异，测量结果供参考，可配合校准功能使用。