{"id":2470,"date":"2026-04-17T14:44:43","date_gmt":"2026-04-17T14:44:43","guid":{"rendered":"https:\/\/profound.nl\/?p=2470"},"modified":"2026-04-18T09:27:26","modified_gmt":"2026-04-18T09:27:26","slug":"how-is-vibration-frequency-measured","status":"publish","type":"post","link":"https:\/\/profound.nl\/nl\/how-is-vibration-frequency-measured\/","title":{"rendered":"How Is Vibration Frequency Measured?"},"content":{"rendered":"<div data-elementor-type=\"wp-post\" data-elementor-id=\"2470\" class=\"elementor elementor-2470\" data-elementor-post-type=\"post\">\n\t\t\t\t<div class=\"elementor-element elementor-element-221ff94 e-flex e-con-boxed e-con e-parent\" data-id=\"221ff94\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-a19d88a elementor-widget elementor-widget-html\" data-id=\"a19d88a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"html.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<style>\r\n  :root {\r\n    --pf-blue-900: #083a54;\r\n    --pf-blue-800: #0b4f73;\r\n    --pf-blue-700: #0f6e9c;\r\n    --pf-blue-600: #1586b7;\r\n    --pf-sky-500: #27a7d8;\r\n    --pf-text: #0f2230;\r\n    --pf-muted: #5c6b76;\r\n    --pf-border: #e6edf2;\r\n    --pf-card: #ffffff;\r\n    --pf-bg: #f6f9fc;\r\n    --pf-radius: 22px;\r\n  }\r\n\r\n  .pf-wrap {\r\n    font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial, \"Helvetica Neue\", sans-serif;\r\n    color: var(--pf-text);\r\n    line-height: 1.55;\r\n  }\r\n\r\n  .pf-container {\r\n    width: min(1140px, 92vw);\r\n    margin: 0 auto;\r\n  }\r\n\r\n  \/* HERO *\/\r\n  .pf-hero {\r\n    background: linear-gradient(180deg, var(--pf-blue-900) 0%, var(--pf-blue-700) 70%, var(--pf-sky-500) 100%);\r\n    border-radius: 28px;\r\n    overflow: hidden;\r\n    box-shadow: 0 18px 40px rgba(8, 58, 84, .22);\r\n    margin-bottom: 40px;\r\n  }\r\n\r\n  .pf-hero-inner {\r\n    padding: clamp(26px, 4vw, 54px);\r\n    display: grid;\r\n    grid-template-columns: 1.15fr .85fr;\r\n    gap: clamp(18px, 3vw, 42px);\r\n    align-items: center;\r\n  }\r\n\r\n  .pf-hero h1 {\r\n    color: #fff;\r\n    font-size: clamp(30px, 3.4vw, 46px);\r\n    line-height: 1.08;\r\n    margin: 0 0 10px 0;\r\n    letter-spacing: .2px;\r\n  }\r\n\r\n  .pf-hero .pf-hero-subtitle {\r\n    color: rgba(255, 255, 255, .92);\r\n    font-weight: 800;\r\n    letter-spacing: .2px;\r\n    margin: 0 0 14px 0;\r\n    font-size: 16px;\r\n  }\r\n\r\n  .pf-hero p {\r\n    color: rgba(255, 255, 255, .88);\r\n    font-size: 16.5px;\r\n    margin: 0 0 18px 0;\r\n    max-width: 70ch;\r\n  }\r\n\r\n  .pf-actions {\r\n    display: flex;\r\n    flex-wrap: wrap;\r\n    gap: 12px;\r\n    margin-top: 8px;\r\n  }\r\n\r\n  .pf-btn {\r\n    display: inline-flex;\r\n    align-items: center;\r\n    justify-content: center;\r\n    padding: 12px 20px;\r\n    border-radius: 999px;\r\n    font-weight: 700;\r\n    text-decoration: none;\r\n    font-size: 14px;\r\n    letter-spacing: .2px;\r\n    transition: transform .08s ease, box-shadow .12s ease, opacity .12s ease;\r\n    user-select: none;\r\n    cursor: pointer;\r\n    max-width: 100%;\r\n    white-space: normal;\r\n    text-align: center;\r\n    line-height: 1.25;\r\n    overflow-wrap: anywhere;\r\n    word-break: break-word;\r\n  }\r\n\r\n  .pf-btn:hover { transform: translateY(-1px); 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}\r\n\r\n  @media (max-width: 900px) {\r\n    .pf-hero-inner { grid-template-columns: 1fr; }\r\n    .pf-card { grid-column: span 12; }\r\n    .pf-split { grid-template-columns: 1fr; }\r\n    .pf-hero-tag { position: static; text-align: left; margin-top: 10px; }\r\n    .pf-cta { flex-direction: column; align-items: flex-start; }\r\n  }\r\n\r\n  @media (max-width: 560px) {\r\n    .pf-actions {\r\n      flex-direction: column;\r\n      align-items: stretch;\r\n    }\r\n    .pf-btn {\r\n      width: 100%;\r\n      padding: 12px 16px;\r\n    }\r\n  }\r\n<\/style>\r\n\r\n<div class=\"pf-wrap\">\r\n  <div class=\"pf-container\">\r\n\r\n    <section class=\"pf-hero\" aria-label=\"Vibration Frequency hero\">\r\n      <div class=\"pf-hero-inner\">\r\n        <div>\r\n          <h1>Measuring Vibration Frequency<\/h1>\r\n          <p>\r\n           Frequency is one of the most important parameters in vibration monitoring. Understanding how\r\nit is measured helps you interpret compliance reports, set correct thresholds, and protect\r\nstructures more effectively.\r\n          <\/p>\r\n          <p>\r\n            Every vibration has two defining characteristics: how fast the motion occurs (frequency) and\r\nhow intense it is (amplitude). Standards like DIN 4150-3 and SBR-A do not simply set a single\r\nvelocity limit. They set limits that change depending on frequency. Without accurate frequency\r\nmeasurement, compliance assessment is impossible.\r\n          <\/p>\r\n\r\n          <div class=\"pf-actions\">\r\n            <a class=\"pf-btn pf-btn-hero-primary\" href=\"#standards\">Compliance Standards<\/a>\r\n            <a class=\"pf-btn pf-btn-hero-ghost\" href=\"#contact\">Contact<\/a>\r\n          <\/div>\r\n        <\/div>\r\n\r\n        <div class=\"pf-hero-media\">\r\n          <div class=\"pf-device\">\r\n            <img decoding=\"async\"\r\n              src=\"https:\/\/profound.nl\/wp-content\/uploads\/2025\/04\/Profound-sensor-085groot-scaled-1-1024x683.jpg\"\r\n              alt=\"Vibration Monitoring System\"\r\n              loading=\"lazy\"\r\n            \/>\r\n          <\/div>\r\n          <div class=\"pf-hero-tag\">\r\n            <div class=\"pf-model\">VIBRA 5+<\/div>\r\n            <div class=\"pf-sub\">Advanced MEMS Technology<\/div>\r\n          <\/div>\r\n        <\/div>\r\n      <\/div>\r\n    <\/section>\r\n\r\n   <section class=\"pf-section\" id=\"principle\">\r\n  <div class=\"pf-surface\">\r\n    <h2 class=\"pf-h2\">What Is Vibration Frequency?<\/h2>\r\n    \r\n    <p class=\"pf-lead\">\r\n      Frequency describes how many complete oscillation cycles occur per second. It is expressed in Hertz (Hz). \r\n      A vibration at 10 Hz completes 10 full back-and-forth cycles every second. A vibration at 50 Hz completes fifty.\r\n    <\/p>\r\n\r\n    <p class=\"pf-text-block\">\r\n      In practice, the vibrations caused by pile driving, demolition, or heavy machinery are not a single clean frequency. \r\n      They contain a mix of frequencies at the same time. The dominant frequency is the one carrying the most energy. \r\n      This is the frequency that monitoring systems extract for comparison against standard limit curves.\r\n    <\/p>\r\n\r\n    <div class=\"pf-callout\">\r\n      <p style=\"margin:0; color: var(--pf-text); font-size: 15px; line-height: 1.6;\">\r\n        <strong>Key concept: Dominant frequency<\/strong> is the frequency at which a vibration event carries its highest energy. \r\n        Building standards use this value to select the correct limit from their frequency-dependent curves. \r\n        Measuring PPV (Peak Particle Velocity) alone, without frequency, gives an incomplete and potentially misleading picture.\r\n      <\/p>\r\n    <\/div>\r\n  <\/div>\r\n<\/section>\r\n\r\n    <section class=\"pf-section\" id=\"standards\">\r\n      <div class=\"pf-surface\">\r\n        <h2 class=\"pf-h2\">Why Frequency Matters for Compliance<\/h2>\r\n\r\n        <p class=\"pf-lead\">\r\n          Standards like DIN 4150-3, BS 7385-2, and SBR-A define limits as a curve rather than a single\r\nnumber. The allowable Peak Particle Velocity (PPV) at 5 Hz is very different from the allowable\r\nPPV at 50 Hz. Lower frequencies are generally more damaging to structures, so limits are stricter\r\nin that range.\r\n        <\/p><br>\r\n        \r\n        <p class=\"pf-lead\">\r\n         This means a project on a soft-soil site producing low-frequency ground movement faces tighter\r\nconstraints than a project with high-frequency vibration at the same PPV level. Getting the\r\nfrequency wrong leads to either unnecessary work stoppages or actual risk to surrounding\r\nbuildings.\r\n        <\/p>\r\n\r\n        <div class=\"pf-table-wrap\">\r\n          <table class=\"pf-table\" aria-label=\"Frequency standards\">\r\n            <thead>\r\n              <tr>\r\n                <th>Standaard<\/th>\r\n                <th>Frequency Range<\/th>\r\n                <th>What Changes with Frequency<\/th>\r\n              <\/tr>\r\n            <\/thead>\r\n            <tbody>\r\n              <tr>\r\n                <td><strong>DIN 4150-3<\/strong><\/td>\r\n                <td>1 to 80 Hz<\/td>\r\n                <td>PPV limit rises with frequency for industrial and commercial buildings.<\/td>\r\n              <\/tr>\r\n              <tr>\r\n                <td><strong>SBR-A<\/strong><\/td>\r\n                <td>1 to 100 Hz<\/td>\r\n                <td>Three vibration classes with frequency-dependent A1 reference values.<\/td>\r\n              <\/tr>\r\n              <tr>\r\n                <td><strong>BS 7385-2<\/strong><\/td>\r\n                <td>1 to 250 Hz<\/td>\r\n                <td>Limit curves split into low, medium, and high sensitivity structures.<\/td>\r\n              <\/tr>\r\n              <tr>\r\n                <td><strong>ISO 4866<\/strong><\/td>\r\n                <td>0.1 to 80 Hz<\/td>\r\n                <td>Methodological reference for frequency weighting and filtering.<\/td>\r\n              <\/tr>\r\n            <\/tbody>\r\n          <\/table>\r\n        <\/div>\r\n      <\/div>\r\n    <\/section>\r\n\r\n    <section class=\"pf-section\" id=\"process\">\r\n      <div class=\"pf-surface\">\r\n        <h2 class=\"pf-h2\">How Frequency is Measured in Practice<\/h2>\r\n\r\n        <p class=\"pf-lead\">\r\n          Modern vibration monitors measure frequency through signal processing. The sensor captures a\r\ncontinuous time-domain signal: a waveform that shows how particle velocity or acceleration\r\nchanges over time. That raw signal is then analyzed to extract frequency content.\r\n        <\/p>\r\n\r\n        <div class=\"pf-grid\">\r\n          <div class=\"pf-card\">\r\n            <div class=\"pf-icon\">01<\/div>\r\n            <h3>Sensor captures the waveform<\/h3>\r\n            <p>A geophone or MEMS accelerometer records particle\r\nvelocity or acceleration as an analog signal in three axes: vertical, transverse, and longitudinal.<\/p>\r\n          <\/div>\r\n          <div class=\"pf-card\">\r\n            <div class=\"pf-icon\">02<\/div>\r\n            <h3>Analog-to-digital conversion<\/h3>\r\n            <p>The continuous waveform is sampled at a high rate\r\n(typically several hundred to several thousand samples per second) and converted to a digital\r\ntime series.<\/p>\r\n          <\/div>\r\n          <div class=\"pf-card\">\r\n            <div class=\"pf-icon\">03<\/div>\r\n            <h3>Fast Fourier Transform (FFT)<\/h3>\r\n            <p>The logger applies an FFT to transform the time-domain\r\nsignal into a frequency spectrum. This shows the amplitude at each frequency component\r\npresent in the event.<\/p>\r\n          <\/div>\r\n          <div class=\"pf-card\">\r\n            <div class=\"pf-icon\">04<\/div>\r\n            <h3>Dominant frequency identification<\/h3>\r\n            <p>The system identifies the frequency with the\r\nhighest spectral amplitude. This is stored as the dominant frequency alongside the PPV for each\r\nrecorded event.<\/p>\r\n          <\/div>\r\n          \r\n          <div class=\"pf-card\">\r\n            <div class=\"pf-icon\">05<\/div>\r\n            <h3>Comparison with the limit curve<\/h3>\r\n            <p>The monitoring system plots the measured PPV and\r\ndominant frequency against the applicable standard curve to determine compliance\r\nautomatically.<\/p>\r\n          <\/div>\r\n        <\/div>\r\n      <\/div>\r\n    <\/section>\r\n\r\n    <section class=\"pf-section\" id=\"sensors\">\r\n  <div class=\"pf-surface\">\r\n    <p class=\"pf-kicker\">\r\n    <h2 class=\"pf-h2\">Geophones vs. MEMS Accelerometers<\/h2>\r\n    \r\n    <p class=\"pf-lead\">\r\n      The choice of sensor directly affects how accurately frequency is captured, particularly at the\r\nlow end of the spectrum.\r\n    <\/p><br>\r\n\r\n    <div class=\"pf-text-block\">\r\n      <p><strong>Geophone Sensors<\/strong> Electromechanical sensors with a natural frequency typically around 4.5\r\nHz. Very accurate in the 4 to 300 Hz range but begin to roll off below their natural frequency. A\r\ncommon source of missed low-frequency events in older systems.<\/p>\r\n    <\/div>\r\n\r\n    <div class=\"pf-text-block\">\r\n      <p><strong>MEMS Accelerometers<\/strong> Micro-electromechanical sensors with a flat response from near 0 Hz\r\nupward. Modern systems like the Vibra 5+ use MEMS combined with advanced signal processing\r\nto achieve accurate measurements from 0.5 Hz, covering frequencies that geophones often\r\nmiss.<\/p>\r\n    <\/div>\r\n\r\n    <div class=\"pf-text-block\">\r\n      <p><strong>Tri-axial Measurement<\/strong> measurement Vibration frequency can differ per axis. A tri-axial sensor captures all\r\nthree spatial directions simultaneously and reports the dominant frequency and PPV per axis as\r\nwell as the resultant vector.<\/p>\r\n    <\/div>\r\n  <\/div>\r\n<\/section>\r\n\r\n   <section class=\"pf-section\" id=\"pitfalls\">\r\n  <div class=\"pf-surface\">\r\n    <h2 class=\"pf-h2\">Low-Frequency Vibration: A Critical Blind Spot<\/h2>\r\n\r\n    <p class=\"pf-lead\">\r\n      Low-frequency vibrations, typically in the 1 to 10 Hz range, are particularly relevant near soft soil conditions, during deep foundation work, and for sensitive structures like heritage buildings.\r\n    <\/p>\r\n\r\n    <div class=\"pf-text-block\">\r\n      <p>\r\n        Low-frequency vibrations, typically in the 1 to 10 Hz range, are particularly relevant near soft soil\r\nconditions, during deep foundation work, and for sensitive structures like heritage buildings.\r\nStandards like SBR-A set their strictest limits precisely in this range.\r\n      <\/p>\r\n    <\/div>\r\n\r\n    <div class=\"pf-text-block\">\r\n      <p>\r\n       A monitoring system that underperforms below 4 Hz can give the impression that measured\r\nvalues are safely within limits while the actual ground motion is significantly higher. This is one\r\nof the most common causes of disputed measurements on construction projects.\r\n      <\/p>\r\n    <\/div>\r\n\r\n    <div class=\"pf-text-block\">\r\n      <p>\r\n       When selecting monitoring equipment, always check the specified lower frequency limit in the\r\ntechnical datasheet. For Dutch projects under SBR-A and for most DIN 4150-3 applications, a\r\nsystem capable of accurate measurement from 1 Hz or lower is the correct requirement.\r\n      <\/p>\r\n    <\/div>\r\n  <\/div>\r\n<\/section>\r\n\r\n    <section class=\"pf-section\" id=\"resolution\">\r\n      <div class=\"pf-surface\">\r\n        <h2 class=\"pf-h2\">Tri-Axial Measurement and Frequency per Axis<\/h2>\r\n\r\n        <p class=\"pf-lead\">\r\n          Ground and structural vibrations do not travel equally in all directions. A vibration event from pile\r\ndriving will often show different dominant frequencies on the vertical axis compared to the\r\nhorizontal axes. Compliance standards typically require assessment in all three directions\r\nseparately and as a vector sum.\r\n        <\/p><br>\r\n        \r\n        <p class=\"pf-lead\">\r\n          Relying on a single-axis sensor and hoping it captures the worst case introduces risk. Tri-axial\r\nsystems record all three channels simultaneously, making it possible to identify which direction\r\nis driving the compliance result and to store complete raw traces for later review if a dispute\r\narises.\r\n        <\/p>\r\n      <\/div>\r\n    <\/section>\r\n\r\n   <section class=\"pf-section\" id=\"resolution\">\r\n      <div class=\"pf-surface\">\r\n        <h2 class=\"pf-h2\">Storing Raw Traces for Dispute Resolution<\/h2>\r\n\r\n        <p class=\"pf-lead\">\r\n          A logging system that stores only peak values and dominant frequencies records enough\r\ninformation for routine compliance checks. But in the event of a damage claim or regulatory\r\nchallenge, the raw time-domain trace is essential. It allows an independent expert to reprocess\r\nthe data with any standard or filter and verify the original measurement independently.\r\n        <\/p><br>\r\n        \r\n        <p class=\"pf-lead\">\r\n         Projects near sensitive buildings or in litigious environments should always configure their\r\nmonitoring system to store full raw waveforms for all exceedance events and, ideally, for all\r\nsignificant events above a defined pre-trigger threshold.\r\n        <\/p>\r\n      <\/div>\r\n    <\/section>\r\n    \r\n     <section class=\"pf-section\" id=\"resolution\">\r\n      <div class=\"pf-surface\">\r\n        <h2 class=\"pf-h2\">Common Mistakes in Frequency Measurement<\/h2>\r\n\r\n        <p class=\"pf-lead\">\r\n         Using a sensor with inadequate low-frequency response. A geophone with a natural frequency of\r\n4.5 Hz will not accurately capture events dominated by 1 to 3 Hz content. This is especially\r\nproblematic near soft soil or during vibrocompaction work.\r\n        <\/p><br>\r\n        \r\n        <p class=\"pf-lead\">\r\n       Setting thresholds based on PPV alone. Without entering the applicable standard and the\r\ncorrect structure category, a monitor cannot automatically evaluate compliance. The threshold\r\nat 5 Hz and at 50 Hz are not the same number.\r\nPoor sensor coupling. A sensor that is not firmly attached to the structure or ground will\r\nintroduce its own resonance and give a distorted frequency reading. Always follow the mounting\r\ninstructions and verify coupling before measurement begins.\r\n        <\/p><br>\r\n        \r\n         <p class=\"pf-lead\">\r\n         Not storing raw traces. If only processed peak results are saved, an independent technical\r\nreview of a disputed event becomes impossible. Configure the system to store raw data from the\r\nstart of the project.\r\n        <\/p>\r\n      <\/div>\r\n    <\/section>\r\n    \r\n    <section class=\"pf-section\" id=\"process\">\r\n      <div class=\"pf-surface\">\r\n        <h2 class=\"pf-h2\">Frequently Asked Questions<\/h2>\r\n\r\n        <div class=\"pf-grid\">\r\n          <div class=\"pf-card\">\r\n            <div class=\"pf-icon\">01<\/div>\r\n            <h3>What frequency range is most important for building protection?<\/h3>\r\n            <p>For building protection\r\nunder DIN 4150-3 and SBR-A, the range from 1 to 50 Hz is most critical. Low-frequency content\r\nbetween 1 and 10 Hz is subject to the strictest limits. Systems that cannot measure reliably\r\nbelow 4 Hz risk missing the most damaging part of the vibration event.<\/p>\r\n          <\/div>\r\n          <div class=\"pf-card\">\r\n            <div class=\"pf-icon\">02<\/div>\r\n            <h3>Is dominant frequency the same as peak frequency?<\/h3>\r\n            <p>These terms are often used\r\ninterchangeably in construction monitoring. Both refer to the frequency at which the most\r\nenergy is concentrated in a given event. In formal signal processing, the peak in the FFT\r\nspectrum corresponds to the dominant frequency used in compliance assessment.<\/p>\r\n          <\/div>\r\n          <div class=\"pf-card\">\r\n            <div class=\"pf-icon\">03<\/div>\r\n            <h3>Can frequency change during a construction activity?<\/h3>\r\n            <p>Yes. The dominant frequency of ground\r\nvibration from pile driving, for example, can shift depending on the pile type, driving energy, and\r\nsoil layering. This is why continuous logging rather than spot checks is the correct approach for\r\ncompliance monitoring.<\/p>\r\n          <\/div>\r\n          <div class=\"pf-card\">\r\n            <div class=\"pf-icon\">04<\/div>\r\n            <h3>Do I need a separate instrument to measure frequency and PPV?<\/h3>\r\n            <p>No. Modern vibration\r\nmonitors record both simultaneously from the same sensor. A single tri-axial logger will capture\r\nPPV and dominant frequency in all three axes and compare them to the selected standard\r\nautomatically.<\/p>\r\n          <\/div>\r\n          \r\n          <div class=\"pf-card\">\r\n            <div class=\"pf-icon\">05<\/div>\r\n            <h3>What standard should I apply on a Dutch construction project?<\/h3>\r\n            <p>SBR-A applies to nuisance\r\nassessment near residential buildings and SBR-B applies to structural damage risk. For projects\r\nwith an international or German client or specification, DIN 4150-3 may also be required. Always\r\nconfirm the applicable standard with the permit authority before starting measurement.<\/p>\r\n          <\/div>\r\n        <\/div>\r\n      <\/div>\r\n    <\/section>\r\n    \r\n    <section class=\"pf-section\" id=\"resolution\">\r\n      <div class=\"pf-surface\">\r\n        <h2 class=\"pf-h2\">Accurate from 0.5 Hz upward<\/h2>\r\n\r\n        <p class=\"pf-lead\">\r\n          The Vibra 5+ uses MEMS technology combined with advanced processing to deliver reliable\r\nfrequency and PPV measurement across the full range required by DIN 4150-3, SBR-A\/B, and BS\r\n7385-2. No low-frequency blind spots, no manual data retrieval, no gaps in your compliance\r\nrecord.\r\n        <\/p>\r\n      <\/div>\r\n    <\/section>\r\n\r\n    <section class=\"pf-section\" id=\"contact\">\r\n      <div class=\"pf-cta\">\r\n        <div>\r\n          <h3>Want to ensure your vibration measurements are accurate?<\/h3>\r\n          <p>\r\n            We help you select the right equipment and interpret frequency data according to DIN 4150-3, SBR, and BS 7385-2.\r\n          <\/p>\r\n        <\/div>\r\n\r\n        <div class=\"pf-actions\">\r\n          <a class=\"pf-btn pf-btn-primary\" href=\"\/nl\/contact\/\">Contact us<\/a>\r\n          <a class=\"pf-btn pf-btn-secondary\" href=\"#standards\">View Standards<\/a>\r\n        <\/div>\r\n      <\/div>\r\n    <\/section>\r\n\r\n  <\/div>\r\n<\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"<p>Measuring Vibration Frequency Frequency is one of the most important parameters in vibration monitoring. Understanding how it is measured helps you interpret compliance reports, set correct thresholds, and protect structures more effectively. Every vibration has two defining characteristics: how fast the motion occurs (frequency) and how intense it is (amplitude). Standards like DIN 4150-3 and [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":1978,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"inline_featured_image":false,"page_builder":"","footnotes":""},"categories":[19],"tags":[],"class_list":["post-2470","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"_links":{"self":[{"href":"https:\/\/profound.nl\/nl\/wp-json\/wp\/v2\/posts\/2470","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/profound.nl\/nl\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/profound.nl\/nl\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/profound.nl\/nl\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/profound.nl\/nl\/wp-json\/wp\/v2\/comments?post=2470"}],"version-history":[{"count":4,"href":"https:\/\/profound.nl\/nl\/wp-json\/wp\/v2\/posts\/2470\/revisions"}],"predecessor-version":[{"id":2475,"href":"https:\/\/profound.nl\/nl\/wp-json\/wp\/v2\/posts\/2470\/revisions\/2475"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/profound.nl\/nl\/wp-json\/wp\/v2\/media\/1978"}],"wp:attachment":[{"href":"https:\/\/profound.nl\/nl\/wp-json\/wp\/v2\/media?parent=2470"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/profound.nl\/nl\/wp-json\/wp\/v2\/categories?post=2470"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/profound.nl\/nl\/wp-json\/wp\/v2\/tags?post=2470"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}