Headphones Sound Bars: Hairline Animation

Headphones Sound Bars

Isometric hairline over-ear headphones with a row of equalizer bars rising between the cups, each on its own sprung delay. The bars scale inside their upright plane, so they stay on the grid.

Also known as: hairline animation, isometric headphones animation, equalizer bars css, sound bars animation.

Color Base size 16px Dark background

HTML

<div class="hln-headphones-eq" role="img" aria-label="Headphones with sound bars rising">
  <svg viewBox="-110 -60 220 120" aria-hidden="true">
    <g transform="translate(-29.3 4.9) scale(1.15)">
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      <g transform="matrix(1 -.5 0 -1 7 -9.5)"><circle cx="0" cy="0" r="11"/></g>
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      <g transform="matrix(1 -.5 0 -1 10 -8)"><circle cx="0" cy="0" r="9.5"/><circle class="hln-headphones-eq-l" cx="0" cy="0" r="5.5"/></g>
      <g transform="matrix(1 .5 0 -1 14.5 3.25)"><g class="hln-headphones-eq-bar" style="--i: 0; --h: 5"><rect x="0" y="0" width="1.8" height="1"/></g></g><g transform="matrix(1 .5 0 -1 17.7 4.85)"><g class="hln-headphones-eq-bar" style="--i: 1; --h: 9"><rect x="0" y="0" width="1.8" height="1"/></g></g><g transform="matrix(1 .5 0 -1 20.9 6.45)"><g class="hln-headphones-eq-bar" style="--i: 2; --h: 13"><rect x="0" y="0" width="1.8" height="1"/></g></g><g transform="matrix(1 .5 0 -1 24.1 8.05)"><g class="hln-headphones-eq-bar" style="--i: 3; --h: 17"><rect class="hln-headphones-eq-a" x="0" y="0" width="1.8" height="1"/></g></g><g transform="matrix(1 .5 0 -1 27.3 9.65)"><g class="hln-headphones-eq-bar" style="--i: 4; --h: 12"><rect x="0" y="0" width="1.8" height="1"/></g></g><g transform="matrix(1 .5 0 -1 30.5 11.25)"><g class="hln-headphones-eq-bar" style="--i: 5; --h: 8"><rect x="0" y="0" width="1.8" height="1"/></g></g><g transform="matrix(1 .5 0 -1 33.7 12.85)"><g class="hln-headphones-eq-bar" style="--i: 6; --h: 4"><rect x="0" y="0" width="1.8" height="1"/></g></g>
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      <g transform="matrix(1 -.5 0 -1 51 12.5)"><circle cx="0" cy="0" r="11"/><circle class="hln-headphones-eq-l" cx="0" cy="0" r="7.5"/><circle class="hln-headphones-eq-l" cx="0" cy="0" r="1.2"/></g>
    </g>
  </svg>
</div>

CSS

.hln-headphones-eq {
  --c: var(--hln-color, #ff4f2e);
  font-size: var(--hln-size, 16px);
  position: relative;
  display: grid;
  place-items: center;
  width: 22em;
  height: 12em;
  border-radius: 0.75em;
  background: #f6f5f1;
  overflow: hidden;
}
.hln-headphones-eq svg {
  width: 100%;
  height: 100%;
  overflow: visible;
  fill: #ffffff;
  stroke: #1c1d21;
  stroke-width: 1.25;
  stroke-linejoin: round;
  stroke-linecap: round;
}
.hln-headphones-eq svg * {
  vector-effect: non-scaling-stroke;
}
.hln-headphones-eq .hln-headphones-eq-l {
  stroke: #9a9ca3;
}
.hln-headphones-eq .hln-headphones-eq-a {
  stroke: var(--c);
}
.hln-headphones-eq .hln-headphones-eq-bar {
  transform: scale(1, var(--h));
  animation: hln-headphones-eq-eq 5s calc(var(--i) * 0.07s) infinite both;
}
@keyframes hln-headphones-eq-eq {
  0% { transform: scale(1, 1); }
  12% { transform: scale(1, 1); animation-timing-function: linear(0, 0.035, 0.125, 0.247, 0.384, 0.524, 0.655, 0.771, 0.87, 0.948, 1.008, 1.05, 1.077, 1.091, 1.095, 1.091, 1.083, 1.071, 1.058, 1.045, 1.032, 1.021, 1.012, 1.005, 0.999, 0.995, 0.993, 0.991, 0.991, 0.991, 0.992, 0.993, 1); }
  32% { transform: scale(1, var(--h)); }
  76% { transform: scale(1, var(--h)); animation-timing-function: cubic-bezier(.65,0,.35,1); }
  90% { transform: scale(1, 1); }
  100% { transform: scale(1, 1); }
}
@media (prefers-reduced-motion: reduce) {
  .hln-headphones-eq * {
    animation: none !important;
  }
}

@media (prefers-reduced-motion: reduce) {
  .hln-headphones-eq, .hln-headphones-eq *, .hln-headphones-eq::before, .hln-headphones-eq::after, .hln-headphones-eq *::before, .hln-headphones-eq *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

Customizing this snippet

Color: set --hln-color on the element or a parent. Currently previewing #3b82f6.
Base size: set --hln-size. Every other dimension is in em, so the whole thing scales together. Currently previewing 16px.
Speed: change the duration on the transition or animation shorthand. Staggered delays are relative, so they keep their rhythm.
Reduced motion: the rule at the end of the CSS turns the motion off for people who asked their OS for less of it. Keep it.

Headphones Sound Bars

HTML

CSS

Customizing this snippet

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