diff --git a/index.html b/index.html
index 18d8a13..3adeb06 100644
--- a/index.html
+++ b/index.html
@@ -453,7 +453,7 @@ function drawSpectrum() {
   }
   const sampleRate = audioCtx.sampleRate;
   const maxBin = Math.min(binCount, Math.floor(19000 * fftSize / sampleRate));
-  const NUM_BARS = 24;
+  const NUM_BARS = 32;
   const barMags = new Float32Array(NUM_BARS);
   for (let b = 0; b < NUM_BARS; b++) {
     const start = 1 + Math.floor(b * (maxBin - 1) / NUM_BARS);
@@ -520,7 +520,7 @@ function drawSpectrum() {
     const rowH = 6;
     const gap = 4;
     const labelW = 12;
-    const segCount = 22;
+    const segCount = 32;
     const segArea = vw - labelW - segCount;
     const segW = segArea / segCount;
     const segG = 1;