From bc40409182f32446c5694eb7f3ecf8be84a803fb Mon Sep 17 00:00:00 2001
From: Lunar Journal <md.node.0@gmail.com>
Date: Mon, 29 Jan 2024 17:44:36 +0200
Subject: emu8910: core: fir: update filtering

---
 src/emu8910.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/emu8910.ts b/src/emu8910.ts
index 892df35..fc39745 100644
--- a/src/emu8910.ts
+++ b/src/emu8910.ts
@@ -214,7 +214,7 @@ class FirFilter {
             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];
-- 
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