diff --git a/index.html b/index.html
index 001b9f2..6e5c0ef 100644
--- a/index.html
+++ b/index.html
@@ -194,13 +194,20 @@ footer .footer-track { flex: 1; min-width: 0; white-space: nowrap; overflow: hid
         <option value="kaiser">Kaiser</option>
         <option value="flatTop">Flat Top</option>
       </select>
-      <span style="font-size:11px;color:#555">Decay:</span>
+      <span style="font-size:11px;color:#555">Peak Decay:</span>
       <select id="decaySelect">
         <option value="0.995">Slow</option>
         <option value="0.985" selected>Medium</option>
         <option value="0.97">Fast</option>
         <option value="0.94">Very Fast</option>
       </select>
+      <span style="font-size:11px;color:#555;margin-left:8px">Bar Decay:</span>
+      <select id="barDecaySelect">
+        <option value="0.99">Slow</option>
+        <option value="0.96" selected>Medium</option>
+        <option value="0.9">Fast</option>
+        <option value="0.8">Very Fast</option>
+      </select>
       <span style="font-size:11px;color:#555;margin-left:8px">Crossfade:</span>
       <select id="crossfadeSelect">
         <option value="0" selected>Off</option>
@@ -275,6 +282,8 @@ let sortField = 'idx';
 let sortAsc = true;
 let windowType = 'hanning';
 let peakDecay = 0.985;
+let barDecay = 0.96;
+
 
 function initAudioCtx() {
   if (audioCtx) return;
@@ -459,7 +468,7 @@ function drawSpectrum() {
   grad.addColorStop(0, '#4a9dff');
   grad.addColorStop(0.4, '#1a6df5');
   grad.addColorStop(1, '#0a1a3e');
-  const smoothFactor = 0.96;
+  const smoothFactor = barDecay;
   const barW = Math.max(1, Math.floor(w / NUM_BARS * 0.75));
   const gap = Math.max(1, Math.floor(w / NUM_BARS * 0.25));
   const totalBar = barW + gap;
@@ -590,6 +599,7 @@ const audioInfo = document.getElementById('audioInfo');
 const errorEl = document.getElementById('error');
 const windowSelect = document.getElementById('windowSelect');
 const decaySelect = document.getElementById('decaySelect');
+const barDecaySelect = document.getElementById('barDecaySelect');
 const crossfadeSelect = document.getElementById('crossfadeSelect');
 
 const AUDIO_EXTS = new Set(['.mp3','.wav','.ogg','.flac','.m4a','.aac','.wma','.aiff','.alac','.opus']);
@@ -979,6 +989,7 @@ function deleteTrack() {
   const playingTrack = currentIndex >= 0 ? tracks[currentIndex] : null;
   for (const idx of sortedSel) URL.revokeObjectURL(tracks[idx].url);
   for (let j = sortedSel.length - 1; j >= 0; j--) tracks.splice(sortedSel[j], 1);
+  selectedIndices.clear();
   if (willDeleteCurrent) {
     if (tracks.length > 0) {
       currentIndex = Math.min(sortedSel[0], tracks.length - 1);
@@ -992,7 +1003,6 @@ function deleteTrack() {
     currentIndex -= removedBefore;
     renderTracks();
   }
-  selectedIndices.clear();
 }
 
 function getSortFn(field) {
@@ -1305,6 +1315,7 @@ sortSelect.addEventListener('change', () => {
 
 windowSelect.addEventListener('change', () => { windowType = windowSelect.value; });
 decaySelect.addEventListener('change', () => { peakDecay = parseFloat(decaySelect.value); });
+barDecaySelect.addEventListener('change', () => { barDecay = parseFloat(barDecaySelect.value); });
 crossfadeSelect.addEventListener('change', () => { crossfadeDuration = parseFloat(crossfadeSelect.value); });
 crossfadeDuration = parseFloat(crossfadeSelect.value);
 repeatSelect.addEventListener('change', () => { repeatMode = repeatSelect.value; });