🔊 声学工具🔊 Acoustics Tools

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🔊 声学工具🔊 Acoustics Tools

共 28个免费在线工具

混响时间（Sabine）计算器Reverberation Time混响时间（T₆₀ = 0.161·V / A）Compute Sabine reverberation time from room volume and total absorption: RT60 = 0.161·V / A 声强距离平方反比计算器Intensity Inverse Square按距离平方反比定律计算声强随传播距离衰减，输入源强与距离，输出各点声强，适用于噪声传播预测、隔音设计与声场建模。Apply the inverse-square law to sound intensity with distance from a point source 房间轴向简正模式计算器Room Axial Mode房间轴向共振频率计算器，输入房间尺寸与模式阶数 n，按 f=n·c/(2L) 求矩形房轴向驻波频率，辅助建筑声学缺陷排查。Compute axial room modes from room dimension and mode order: f = n·c / (2L) 质量定律隔声量计算器Mass Law Tl质量定律隔声量估算器，输入频率与面密度，按 TL≈20·log₁₀(f·m)−48 估算单层均质墙隔声量，指导隔声设计。Estimate the mass-law transmission loss of a partition: TL ≈ 20·log₁₀(f·m) − 48 波长计算器（由频率）Wavelength Calculator输入频率与声速，按 λ=c/f 计算对应声波波长，用于扬声器分频、房间模态与声学测量中的波长估算。Compute wavelength from frequency and wave speed: λ = c / f 两声压级叠加计算器Combine Two Spl声压级能量叠加器，输入两个不相干声源的声压级，按对数能量叠加求总声级，用于多噪声源总声压评估。Combine two sound pressure levels on an energy basis: L = 10·log₁₀(10^(L₁/10) + 10^(L₂/10)) 声强级计算器Sound Intensity Level声强级（L_I = 10·log₁₀(I / I₀)）Compute the sound intensity level from intensity relative to the reference I₀ 空气中声速计算器Sound Speed Air空气中声速（v = 331.4 + 0.6·T）Compute the speed of sound in air from the air temperature 声功率级计算器Sound Power Level由声功率求声功率级（W₀=10⁻¹² W）Compute the sound power level from acoustic power: L_W = 10·log₁₀(W / W₀) 声压级计算器Sound Pressure Level由声压求声压级（p₀=20 µPa）Compute the sound pressure level from pressure relative to the reference p₀: SPL = 20·log₁₀(p / p₀) 弹簧-质量系统固有频率计算器Spring Natural Freq固有频率（f = (1/2π)·√(k/m)）Compute the natural frequency of a spring-mass system: f = (1 / 2π)·√(k / m) 频率转音名计算器Freq to Note将频率映射到最近的十二平均律音名Convert a frequency to its MIDI note number: n = 69 + 12·log₂(f / 440) 声学多普勒效应计算器Doppler Acoustic计算声源与观察者相对运动时的多普勒频移，输入声速、源频与相对速度，输出观测频率，适用于雷达测速、医学超声与声学实验。Compute the observed frequency from source and receiver motion and the speed of sound 平均吸声系数计算器Absorption Coeff Sabine由赛宾公式反推平均吸声系数Compute the average absorption coefficient from room volume, total surface area and reverberation time: ᾱ = 0.161·V /… 声压级叠加计算器Spl Add两声压级叠加（L = 10·log₁₀(10^(L₁/10)+10^(L₂/10))）Add multiple sound pressure levels on a logarithmic (energy) basis 声强级计算器Intensity Level由声强求声强级（I₀=10⁻¹² W/m²）Compute the intensity level from sound intensity relative to the reference I₀: L_I = 10·log₁₀(I / I₀) 开管基频计算器Pipe Open两端开口管基频（f₁ = v / 2L）Compute the fundamental frequency of an open pipe from its length and the speed of sound 弦基频计算器String Fundamental弦基频（f₁ = (1/2L)·√(T/μ)）Compute the fundamental frequency of a vibrating string from length, tension and linear density 拍频计算器Beat Frequency拍频（f_beat = |f₁ − f₂|）Compute the beat frequency produced by two close tones: f_beat = |f₁ − f₂ 闭管基频计算器Pipe Closed一端闭口管基频（f₁ = v / 4L）Compute the fundamental frequency of a closed (stopped) pipe from its length and the speed of sound 临界距离（混响声场）计算器Critical Distance直达声与混响声相等的临界距离Estimate the reverberation radius from source directivity, room volume and reverberation time: r_c ≈ 0.057·√(Q·V / RT60) 功率比分贝换算器Decibel Power Ratio输入两个功率值，按 10·log₁₀(P₂/P₁) 计算功率比的分贝数，用于放大器增益、声功率变化等相对量表达，适用于音响与电声工程。Convert a power ratio to decibels: L = 10·log₁₀(P₂ / P₁) 电压比分贝换算器Decibel Voltage Ratio场量（电压/声压）之比转分贝Convert a voltage (amplitude) ratio to decibels: L = 20·log₁₀(V₂ / V₁) 功率分贝换算器Decibel Power功率分贝（L = 10·log₁₀(P / P₀)）Convert between decibels and a power ratio using L = 10·log₁₀(P₂ / P₁) 电压分贝换算器Decibel Voltage电压分贝（L = 20·log₁₀(V / V₀)）Convert between decibels and a voltage or amplitude ratio using L = 20·log₁₀(V₂ / V₁) 波长与频率换算器Wavelength and Frequency Converter波长频率（λ = v / f）Convert between wavelength and frequency for a given wave speed: λ = c / f 自由场声强 I = P / (4πr²)Sound Intensity Spherical球面扩散声强计算器，输入点声源声功率与距离 r，按 I=P/(4πr²) 求自由场中距离 r 处的声强，用于声源辐射分析。Compute free-field spherical sound intensity: I = P / (4πr²) 特性声阻抗 Z = ρ·cAcoustic Impedance输入介质密度与声速，按 Z=ρ·c 计算特性声阻抗，描述介质对声波传播的阻碍，适用于声学材料选型、阻抗匹配与传感器耦合设计。Find the characteristic acoustic impedance of a medium from its density and sound speed: Z = ρ · c
📖关于「声学工具」About Acoustics Tools▼

📝栏目简介

声学工具集合收录了 28 个免费在线工具，覆盖声学场景下的常见计算、换算与查询需求。无论你是相关领域的从业者、学生还是普通用户，都能在这里找到即用即走的实用小工具。所有工具纯前端运行，数据不上传服务器，保护隐私安全。This collection gathers 28 free online Acoustics tools for everyday calculations, conversions and lookups. Whether you are a professional, a student or a casual user, you will find handy tools you can use right away. Everything runs client-side — no data is uploaded.

✨核心功能与适用场景

本页收录的声学工具包括（部分代表工具）：Featured Acoustics tools on this page include:

  • 混响时间（Sabine）计算器Reverberation Time
  • 房间轴向简正模式计算器Room Axial Mode
  • 质量定律隔声量计算器Mass Law Tl
  • 两声压级叠加计算器Combine Two Spl
  • 声强级计算器Sound Intensity Level
  • 声功率级计算器Sound Power Level
  • 声压级计算器Sound Pressure Level
  • 频率转音名计算器Freq to Note
  • 声学多普勒效应计算器Doppler Acoustic
  • 声压级叠加计算器Spl Add
  • 开管基频计算器Pipe Open
  • 弦基频计算器String Fundamental
  • 闭管基频计算器Pipe Closed
  • 临界距离（混响声场）计算器Critical Distance
  • 电压比分贝换算器Decibel Voltage Ratio
  • 功率分贝换算器Decibel Power
  • 波长与频率换算器Wavelength and Frequency Converter
  • 自由场声强 I = P / (4πr²)Sound Intensity Spherical

这些工具帮助你快速完成声学相关的常见任务，无需记忆复杂公式或手动换算，输入即可得结果。These tools help you complete Acoustics tasks quickly — no formulas to memorise and no manual conversion, just enter your values and get the result.

❓常见问题

声学分类下的工具需要下载或注册吗？Do Acoustics tools require any download or sign-up?

不需要。本页 28 个声学工具（如混响时间（Sabine）计算器、房间轴向简正模式计算器、质量定律隔声量计算器、两声压级叠加计算器、声强级计算器、声功率级计算器）都是纯前端页面，打开网页即可使用，无需安装软件、无需注册账号；输入的数据只在你的浏览器内处理，不会上传服务器。No. The 28 Acoustics tools on this page (including Reverberation Time, Room Axial Mode, Mass Law Tl, Combine Two Spl, Sound Intensity Level, Sound Power Level) are pure front-end pages: just open them and start using. No software to install, no account needed, and anything you enter is processed inside your browser — never uploaded.

声学工具的结果能直接用于医疗、法律或财务决策吗？Can the results be used directly for medical, legal or financial decisions?

不能直接作为决策依据。本页工具多为通用计算、换算与查询，结果仅供日常参考；涉及诊断、诉讼、投资、工程验收等专业场景，请以权威标准、原始仪器读数或持证专业人士的结论为准。所有运算都在本地完成，数据不上传。No — treat them as everyday references only. Most tools here are general-purpose calculators, converters and lookups; for diagnosis, litigation, investment or engineering acceptance, rely on authoritative standards, raw instrument readings or a licensed professional. Everything is computed locally and nothing is uploaded.