diff --git a/index.html b/index.html
index 48f95d1..d68e926 100644
--- a/index.html
+++ b/index.html
@@ -207,8 +207,8 @@ footer .footer-track { flex: 1; min-width: 0; white-space: nowrap; overflow: hid
       </select>
       <span style="font-size:11px;color:#6b7089">Peak Decay:</span>
       <select id="decaySelect">
-        <option value="0.995">Slow</option>
-        <option value="0.985" selected>Medium</option>
+        <option value="0.998" selected>Slow</option>
+        <option value="0.985">Medium</option>
         <option value="0.97">Fast</option>
         <option value="0.94">Very Fast</option>
       </select>
@@ -541,9 +541,10 @@ function drawSpectrum() {
     const gap = 4;
     const labelW = 12;
     const segCount = 32;
-    const segArea = vw - labelW - segCount;
-    const segW = segArea / segCount;
     const segG = 1;
+    const segW = Math.floor((vw - labelW - (segCount - 1) * segG) / segCount);
+    const totalSegW = segCount * segW + (segCount - 1) * segG;
+    const segLeft = labelW + Math.floor(((vw - labelW) - totalSegW) / 2);
     function getLevel(analyserCh) {
       const td = new Uint8Array(analyserCh.fftSize);
       analyserCh.getByteTimeDomainData(td);
@@ -567,7 +568,7 @@ function drawSpectrum() {
       if (level > peak) peak = level;
       else peak *= 0.990;
       for (let i = 0; i < segCount; i++) {
-        const sx = labelW + i * (segW + segG);
+        const sx = segLeft + i * (segW + segG);
         const on = i < lit;
         const pi = Math.round(peak * segCount);
         vuctx.fillStyle = on ? '#84a0c6' : '#1e2132';