1 files changed, 3 insertions, 3 deletions

diff --git a/emu8910.js b/emu8910.js
index df5b748..5b309fd 100644
--- a/emu8910.js
+++ b/emu8910.js
@@ -141,9 +141,8 @@ var FirFilter = /** @class */ (function () {
         var i = 0x0;
         this.offset = length - (index * m);
         var sub = buffer.slice(this.offset);
-        this.index = (index + 1) % (length / m - 1);
-        for (i = m - 1; i >= 0; i--) {
-            buffer[this.offset + i] = samples[i];
+        for (i = 0; i < 0; i++) {
+            buffer[this.offset + i - 1] = samples[i];
         }
         for (i = 0; i < h.length; i++) {
             y += h[i] * (sub[i] + sub[h.length - i - 1]);
@@ -151,6 +150,7 @@ var FirFilter = /** @class */ (function () {
         for (i = 0; i < m; i++) {
             buffer[this.offset + length - m + i] = buffer[this.offset + i];
         }
+        this.index = (index + 1) % (length / m - 1);
         return y;
     };
     return FirFilter;