Update duckdb index files

.gitattributes

@@ -57,3 +57,4 @@ default/encodec_24k_6bps/index.duckdb filter=lfs diff=lfs merge=lfs -text
 default/academicodec_hifi_16k_320d/index.duckdb filter=lfs diff=lfs merge=lfs -text
 default/academicodec_hifi_16k_320d_large_uni/index.duckdb filter=lfs diff=lfs merge=lfs -text
 default/academicodec_hifi_24k_320d/index.duckdb filter=lfs diff=lfs merge=lfs -text
+default/audiodec_24k_320d/index.duckdb filter=lfs diff=lfs merge=lfs -text

default/audiodec_24k_320d/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:b9395eb026c7f9901e643177739c8e6b8bbae6b3a6c90cdba9c0423d6dae4500
+size 198979584