svg
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 56 56" role="img" aria-label="Echo"><title>Echo</title><desc>Three ring waves ripple out from the center in slow succession.</desc><defs><circle id="b" r="2.4" fill="#ffffff" opacity="0.07"/><circle id="l" r="3.1"/></defs><style>.l{fill:#ffffff;opacity:0;animation:icon-52-k 2600ms cubic-bezier(0.16, 1, 0.3, 1) infinite both;}@keyframes icon-52-k{0%{opacity:0.10;}20%{opacity:1;}60%{opacity:0.20;}100%{opacity:0.10;}}@media (prefers-reduced-motion:reduce){.l{animation:none;opacity:0.45;}}.d00,.d01,.d02,.d03,.d04,.d10,.d14,.d20,.d24,.d30,.d34,.d40,.d41,.d42,.d43,.d44{animation-delay:1733ms;}.d11,.d12,.d13,.d21,.d23,.d31,.d32,.d33{animation-delay:867ms;}.d22{animation-delay:0ms;}</style><use href="#b" x="6" y="6"/><use href="#b" x="17" y="6"/><use href="#b" x="28" y="6"/><use href="#b" x="39" y="6"/><use href="#b" x="50" y="6"/><use href="#b" x="6" y="17"/><use href="#b" x="17" y="17"/><use href="#b" x="28" y="17"/><use href="#b" x="39" y="17"/><use href="#b" x="50" y="17"/><use href="#b" x="6" y="28"/><use href="#b" x="17" y="28"/><use href="#b" x="28" y="28"/><use href="#b" x="39" y="28"/><use href="#b" x="50" y="28"/><use href="#b" x="6" y="39"/><use href="#b" x="17" y="39"/><use href="#b" x="28" y="39"/><use href="#b" x="39" y="39"/><use href="#b" x="50" y="39"/><use href="#b" x="6" y="50"/><use href="#b" x="17" y="50"/><use href="#b" x="28" y="50"/><use href="#b" x="39" y="50"/><use href="#b" x="50" y="50"/><use class="l d00" href="#l" x="6" y="6"/><use class="l d01" href="#l" x="17" y="6"/><use class="l d02" href="#l" x="28" y="6"/><use class="l d03" href="#l" x="39" y="6"/><use class="l d04" href="#l" x="50" y="6"/><use class="l d10" href="#l" x="6" y="17"/><use class="l d11" href="#l" x="17" y="17"/><use class="l d12" href="#l" x="28" y="17"/><use class="l d13" href="#l" x="39" y="17"/><use class="l d14" href="#l" x="50" y="17"/><use class="l d20" href="#l" x="6" y="28"/><use class="l d21" href="#l" x="17" y="28"/><use class="l d22" href="#l" x="28" y="28"/><use class="l d23" href="#l" x="39" y="28"/><use class="l d24" href="#l" x="50" y="28"/><use class="l d30" href="#l" x="6" y="39"/><use class="l d31" href="#l" x="17" y="39"/><use class="l d32" href="#l" x="28" y="39"/><use class="l d33" href="#l" x="39" y="39"/><use class="l d34" href="#l" x="50" y="39"/><use class="l d40" href="#l" x="6" y="50"/><use class="l d41" href="#l" x="17" y="50"/><use class="l d42" href="#l" x="28" y="50"/><use class="l d43" href="#l" x="39" y="50"/><use class="l d44" href="#l" x="50" y="50"/></svg>