1 files changed, 1 insertions, 1 deletions
diff --git a/emu8910.js b/emu8910.js
index 6673767..df5b748 100644
--- a/emu8910.js
+++ b/emu8910.js
@@ -146,7 +146,7 @@ var FirFilter = /** @class */ (function () {
             buffer[this.offset + i] = samples[i];
         }
         for (i = 0; i < h.length; i++) {
-            y += h[i] * sub[i];
+            y += h[i] * (sub[i] + sub[h.length - i - 1]);
         }
         for (i = 0; i < m; i++) {
             buffer[this.offset + length - m + i] = buffer[this.offset + i];