▲ Solution ContentCopy

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"paragraph", "children": [ { "type": "span", "value": "由于校准结果可能在设备的寿命内发生变化，因此有必要定期校准测量麦克风。" } ] }, { "type": "paragraph", "children": [ { "type": "span", "value": "我们的解决方案允许在DewesoftX软件中以几种不同的方式校准麦克风：" } ] }, { "type": "list", "style": "bulleted", "children": [ { "type": "listItem", "children": [ { "type": "paragraph", "children": [ { "type": "span", "marks": [ "strong" ], "value": "通过TEDS校准:" }, { "type": "span", "value": " 麦克风的灵敏度写在TEDS芯片上，软件可以自动读取校准信息。" } ] } ] }, { "type": "listItem", "children": [ { "type": "paragraph", "children": [ { "type": "span", "marks": [ "strong" ], "value": "通过外置的麦克风校准器:" }, { "type": "span", "value": " 可以将麦克风与麦克风校准器直接连接，在Dewesoft X 数据采集软件中完成麦克风的校准。" } ] } ] }, { "type": "listItem", "children": [ { "type": "paragraph", "children": [ { "type": "span", "marks": [ "strong" ], "value": "通过厂家的校准证书:" }, { "type": "span", "value": " 只需将灵敏度系数输入麦克风通道简单配置即可。" } ] } ] } ] }, { "type": "paragraph", "children": [ { "type": "span", "value": "Dewesoft 还为您所有的声学传感器提供了专业认证的IEC/ANSI声学校准 。" } ] } ] } }, "blocks": [], "links": [] }, "images": [ { "responsiveImage": { "aspectRatio": 1.1600000000000001, "base64": "data:image/jpeg;base64,/9j/4AAQSkZJRgABAQAAAQABAAD/2wCEAAoHBwgHBgoICAgLEhEPFxgNDg0NDh0NDg0NFx8ZGCIVFhUaHysjGh0oHSEiJDUlKC0vMjIyGSI4PTcwPCsxMi8BCgsLDg0OHA0QETUdFhwvLy8vLy8vLy8vLy8vLy8vLy8vLy8vLy8vLy8vLy8vLy8vLy8vLy8vLy8vLy8vLy8vL//AABEIABUAGAMBIgACEQEDEQH/xAAYAAADAQEAAAAAAAAAAAAAAAAABAYFAf/EAB0QAAICAwEBAQAAAAAAAAAAAAABAxECBCESEwX/xAAXAQADAQAAAAAAAAAAAAAAAAACAwQB/8QAGREAAgMBAAAAAAAAAAAAAAAAAAECITED/9oADAMBAAIRAxEAPwCvz31d2Iy/ox5Z16RlzbOXzdMn5dnYey6bGyYMeNFpFuL1xgTWpsTt9s6amIfKxrY5GzKjpzu0ACmXrByLLznwAAJE0tP/2Q==", "height": 689, "sizes": "(max-width: 800px) 100vw, 800px", "src": "https://www.datocms-assets.com/53444/1654070959-gras-microphone-calibrator-2.jpg?auto=format&fit=max&w=800", "srcSet": "https://www.datocms-assets.com/53444/1654070959-gras-microphone-calibrator-2.jpg?auto=format&dpr=0.25&fit=max&w=800 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"children": [ { "type": "span", "marks": [ "strong" ], "value": "A-计权" }, { "type": "span", "value": " 用于测量声级，等效感知人耳对声音的响应，人耳对低频和高频的声音不太敏感。" } ] } ] }, { "type": "listItem", "children": [ { "type": "paragraph", "children": [ { "type": "span", "marks": [ "strong" ], "value": "B-计权" }, { "type": "span", "value": " 是用于音乐聆听目的的极佳选择。" } ] } ] }, { "type": "listItem", "children": [ { "type": "paragraph", "children": [ { "type": "span", "marks": [ "strong" ], "value": "C-计权" }, { "type": "span", "value": " 用于高强度噪声测量。" } ] } ] }, { "type": "listItem", "children": [ { "type": "paragraph", "children": [ { "type": "span", "marks": [ "strong" ], "value": "D-计权" }, { "type": "span", "value": " 是专门根据IEC 537测量标准为测量高水平飞机噪音而设计的。D计权曲线的大峰值反映了人类听到的随机噪声与纯音不同这样一个事实，这种效应在6kHz左右特别明显。" } ] } ] }, { "type": "listItem", "children": [ { "type": "paragraph", "children": [ { "type": "span", "marks": [ "strong" ], "value": "Z-计权" }, { "type": "span", "value": " 在所有频率上都是线性的，对所有测量值都有相同的影响。" } ] } ] } ] } ] } }, "blocks": [], "links": [] }, "images": [ { "responsiveImage": { "aspectRatio": 1, "base64": "data:image/jpeg;base64,/9j/4AAQSkZJRgABAQAAAQABAAD/2wCEAAoHBwgHBgoIDQgSDRYLDQ8NDQ0QDx0JFgcNFxMZGBYVIhUaHysjGh0oHRUiJDUlKC0vMjIyGSI4PTcwPCsxMi8BCgsLBQUFEAUFEC8cFhwvLy8vLy8vLy8vLy8vLy8vLy8vLy8vLy8vLy8vLy8vLy8vLy8vLy8vLy8vLy8vLy8vL//AABEIABgAGAMBIgACEQEDEQH/xAAYAAEBAAMAAAAAAAAAAAAAAAAABQEDB//EAB4QAAMAAgMAAwAAAAAAAAAAAAABAwIEESEyBRMU/8QAFQEBAQAAAAAAAAAAAAAAAAAAAAL/xAAUEQEAAAAAAAAAAAAAAAAAAAAA/9oADAMBAAIRAxEAPwDqVc4yt6NVNqX2Lsn7WvbPZS5MV+Pr0+SkqyzjVegT9XTqn6AFCkn+hMxZZPJIADZjLPFcgAD/2Q==", "height": 800, "sizes": "(max-width: 800px) 100vw, 800px", "src": "https://www.datocms-assets.com/53444/1653984901-sound-level-meter-frequency-weighting-curves.png?auto=format&fit=max&w=800", "srcSet": "https://www.datocms-assets.com/53444/1653984901-sound-level-meter-frequency-weighting-curves.png?auto=format&dpr=0.25&fit=max&w=800 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"children": [ { "type": "heading", "level": 2, "children": [ { "type": "span", "value": "时间计权分析" } ] }, { "type": "paragraph", "children": [ { "type": "span", "value": "使用任何级别的声级计测量声级，都需要有" }, { "type": "span", "marks": [ "strong" ], "value": "快速，慢速，或者脉冲时间计权" }, { "type": "span", "value": "。 这些计权可以追溯到有模拟仪表时候的声级计，并定义了仪表变化的速度。" } ] }, { "type": "list", "style": "bulleted", "children": [ { "type": "listItem", "children": [ { "type": "paragraph", "children": [ { "type": "span", "marks": [ "strong" ], "value": "快速:" }, { "type": "span", "value": " 针会移动得很快，以显示快速变化的噪音。 快对应一个125ms的时间常数。" } ] } ] }, { "type": "listItem", "children": [ { "type": "paragraph", "children": [ { "type": "span", "marks": [ "strong" ], "value": "慢速:" }, { "type": "span", "value": " 针会带有阻尼，平滑的移动，更容易读取数据。 慢对应1秒时间常数。" } ] } ] }, { "type": "listItem", "children": [ { "type": "paragraph", "children": [ { "type": "span", "marks": [ "strong" ], "value": "脉冲:" }, { "type": "span", "value": " 脉冲时间计权权比快速计权快四倍，上升时间常数较短，但下降常数较慢。 脉冲的上升时间常数为35ms，下降时间常数为1.5s。" } ] } ] } ] } ] } }, "blocks": [], "links": [] }, "images": [ { "responsiveImage": { "aspectRatio": 1, "base64": "data:image/jpeg;base64,/9j/4AAQSkZJRgABAQAAAQABAAD/2wCEAAoHBwYSBg0SBgcGCAcIDRgQBwYJDhENFgcOFxMZGBYTFhUaHysjGh0oHRUWJDUlKC0vMjIyGS44PTcwPCsxMi8BCgsLDg0OHRANFS8dFhwvLy8vLy8vLy8vLy8vLy8vLy8vLy8vLy8vLy8vLy8vLy8vLy8vLy8vLy8vLy8vLy8vL//AABEIABgAGAMBIgACEQEDEQH/xAAXAAEBAQEAAAAAAAAAAAAAAAAAAQIH/8QAFRABAQAAAAAAAAAAAAAAAAAAAAH/xAAWAQEBAQAAAAAAAAAAAAAAAAACAwD/xAAXEQEBAQEAAAAAAAAAAAAAAAAAAgER/9oADAMBAAIRAxEAPwDkFRayE4tVKAaHVZBpbQAhf//Z", "height": 800, "sizes": "(max-width: 800px) 100vw, 800px", "src": "https://www.datocms-assets.com/53444/1654070954-sound-level-meter-time-weighting.png?auto=format&fit=max&w=800", "srcSet": "https://www.datocms-assets.com/53444/1654070954-sound-level-meter-time-weighting.png?auto=format&dpr=0.25&fit=max&w=800 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"声学参数计算" } ] }, { "type": "paragraph", "children": [ { "type": "span", "value": "Dewesoft声级计在测量过程中实时计算多个参数和通道。 部分计算参数为：" } ] }, { "type": "list", "style": "bulleted", "children": [ { "type": "listItem", "children": [ { "type": "paragraph", "children": [ { "type": "span", "marks": [ "strong" ], "value": "频率计权:" }, { "type": "span", "value": " LFTp - 已经被调整到分贝(" }, { "type": "span", "marks": [ "strong" ], "value": "dB" }, { "type": "span", "value": ")值的经过时间和频率计权的声压级(SPL) 。" } ] } ] }, { "type": "listItem", "children": [ { "type": "paragraph", "children": [ { "type": "span", "marks": [ "strong" ], "value": "时间计权" } ] } ] }, { "type": "listItem", "children": [ { "type": "paragraph", "children": [ { "type": "span", "marks": [ "strong" ], "value": "Lpk 计权:" }, { "type": "span", "value": " Lpk值, 显示当前声级的极大值。" } ] } ] }, { "type": "listItem", "children": [ { "type": "paragraph", "children": [ { "type": "span", "marks": [ "strong" ], "value": "频率计权原始数据:" }, { "type": "span", "value": " F计权的原始数据，显示了以Pa为单位的声音频率计权时间曲线。" } ] } ] }, { "type": "listItem", "children": [ { "type": "paragraph", "children": [ { "type": "span", "marks": [ "strong" ], "value": "统计声级:" }, { "type": "span", "value": " 整个测量时间内或次数中出现时间或次数占比达到一定比例以上的声级，可以选择LAF 1, 5, 10, 50, 90, 95和99% 。" } ] } ] }, { "type": "listItem", "children": [ { "type": "paragraph", "children": [ { "type": "span", "marks": [ "strong" ], "value": "Lp (SPL):" }, { "type": "span", "value": " 已经被调整到分贝(" }, { "type": "span", "marks": [ "strong" ], "value": "dB" }, { "type": "span", "value": ")值的经过时间和频率计权的" }, { "type": "span", "marks": [ "strong" ], "value": "声压级" }, { "type": "span", "value": " (SPL) " } ] } ] }, { "type": "listItem", "children": [ { "type": "paragraph", "children": [ { "type": "span", "marks": [ "strong" ], "value": "Lim:" }, { "type": "span", "value": " 脉冲计权的等效声级。" } ] } ] }, { "type": "listItem", "children": [ { "type": "paragraph", "children": [ { "type": "span", "marks": [ "strong" ], "value": "LE:" }, { "type": "span", "value": " 频率计权权声能量的值" } ] } ] } ] } ] } }, "blocks": [], "links": [] }, "images": [ { "responsiveImage": { "aspectRatio": 1, "base64": "data:image/jpeg;base64,/9j/4AAQSkZJRgABAQAAAQABAAD/2wCEAAoHBwgHBgoICAgFCgoFBQwFBQUFBREJCgUMFxMZGBYTFhUaHysjGh0oHRUWJDUlKC0vMjIyGSI4PTcwPCsxMi8BCgsLBQUFEAUFEC8cFhwvLy8vLy8vLy8vLy8vLy8vLy8vLy8vLy8vLy8vLy8vLy8vLy8vLy8vLy8vLy8vLy8vL//AABEIABgAGAMBIgACEQEDEQH/xAAVAAEBAAAAAAAAAAAAAAAAAAAAB//EABQQAQAAAAAAAAAAAAAAAAAAAAD/xAAVAQEBAAAAAAAAAAAAAAAAAAAAAv/EABQRAQAAAAAAAAAAAAAAAAAAAAD/2gAMAwEAAhEDEQA/AKUApQAAAAAD/9k=", "height": 800, "sizes": "(max-width: 800px) 100vw, 800px", "src": "https://www.datocms-assets.com/53444/1654070950-sound-level-meter-calculated-parameters.png?auto=format&fit=max&w=800", "srcSet": "https://www.datocms-assets.com/53444/1654070950-sound-level-meter-calculated-parameters.png?auto=format&dpr=0.25&fit=max&w=800 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"children": [ { "type": "span", "value": "真实的峰值" } ] }, { "type": "paragraph", "children": [ { "type": "span", "value": "真实峰值水平显示了输入信号的真实峰值dB(分贝)。" }, { "type": "span", "marks": [ "strong" ], "value": "声压级 (SPL)" }, { "type": "span", "value": " 包含了一个时间计权滤波器，它对真实峰值是有影响的。" } ] }, { "type": "paragraph", "children": [ { "type": "span", "value": "不管选择F，S或者I 时间计权，声压级值都不会达到真实的峰值，而LCpk可以显示\"真实的峰值\"。" } ] } ] } }, "blocks": [], "links": [] }, "images": [ { "responsiveImage": { "aspectRatio": 1, "base64": "data:image/jpeg;base64,/9j/4AAQSkZJRgABAQAAAQABAAD/2wCEAAoHBwgHEQ0ICAgLChENDQ0NDQ0RDhEOFg0NFxUZGBYVFhUjKzcjGh0oHRUWJDUlKC0vMjIyGSI4PTcwPCsxMi8BCgsLDg4OEBANFjscFh0vLy8vLy8vLy8vLy8vLy8vLy8vLy8vLy8vLy8vLy8vLy8vLy8vLy8vLy8vLy8vLy8vL//AABEIABgAGAMBIgACEQEDEQH/xAAZAAADAAMAAAAAAAAAAAAAAAAAAQQCAwf/xAAhEAACAQMDBQAAAAAAAAAAAAAAAQIDQVIEBaETFCJCUf/EABUBAQEAAAAAAAAAAAAAAAAAAAEA/8QAFBEBAAAAAAAAAAAAAAAAAAAAAP/aAAwDAQACEQMRAD8A5TPVaa0WzU9TRwZZOjtuRg6W2r25ApO4o4MCiUNutLkRJFLp2bE1CzYAILx+sQASf//Z", "height": 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"question": "声级计是如何工作的?", "answer": "<p>声级计使用四个主要部件：<strong>麦克风</strong>、<strong>前置放大器</strong>、<strong>信号处理</strong>和<strong>显示器</strong>。麦克风将声音信号转换为等效的电信号。最适合用于声级计的麦克风是电容式麦克风，它集精度、稳定性和可靠性于一身。麦克风产生的电信号处于非常低的电平，在由主处理器（通常是软件）处理之前，前置放大器会使其变得更强。</p>\n<p>信号处理包括根据国际标准（如 <strong>IEC 61672-1</strong>）对信号应用频率和时间加权，声级计应遵守这些标准。</p>" }, { "question": "什么是声压和声压级?", "answer": "<p><strong>声压</strong>或<strong>声学压力</strong>是由声波引起的与环境（平均或平衡）大气压的局部压力偏差。在空气中，声压可以用麦克风测量，在水中，声压可以用水听器测量。声压的单位是帕斯卡（符号：Pa）。</p>\n<p><strong>声压级&nbsp;(SPL)</strong>或<strong>声级</strong>是相对于参考值的声音的有效声压的对数量度。它以高于标准参考水平的分贝（dB）为单位进行测量。空气或其他气体中声压的标准参考值为20&micro;Pa，通常被认为是人类听力的阈值(1 kHz)。了解更多。</p>" }, { "question": "Dewesoft 声级计支持哪些标准?", "answer": "<p>Dewesoft声级计支持以下国际标准-IEC 61672和IEC 60651、IEC 60804。这使它成为<strong>Class 1(1类) 声级计</strong>。</p>" }, { "question": "Dewesoft声级计是否包含软件?", "answer": "<p>是。Dewesoft声级计包括先进且易用的记录、声音分析和可视化软件。它提供实时声音处理和分析。该软件是免费的，并提供终生免费升级。可以下载具有完整功能的评估版进行试用。</p>" } ], "relatedProducts": [ { "__typename": 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