diff --git a/Cargo.lock b/Cargo.lock
index bf919d7..ce96f4c 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -17,6 +17,17 @@ version = "2.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "512761e0bb2578dd7380c6baaa0f4ce03e84f95e960231d1dec8bf4d7d6e2627"
 
+[[package]]
+name = "ahash"
+version = "0.7.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "891477e0c6a8957309ee5c45a6368af3ae14bb510732d2684ffa19af310920f9"
+dependencies = [
+ "getrandom",
+ "once_cell",
+ "version_check",
+]
+
 [[package]]
 name = "aho-corasick"
 version = "1.1.3"
@@ -81,6 +92,44 @@ version = "1.0.89"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "86fdf8605db99b54d3cd748a44c6d04df638eb5dafb219b135d0149bd0db01f6"
 
+[[package]]
+name = "argmin"
+version = "0.7.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5698c8cd3510117a4e6b96749a8061ba7dce1a19578ce4ecdb12dd36d94a7f8d"
+dependencies = [
+ "anyhow",
+ "argmin-math",
+ "bincode 1.3.3",
+ "instant",
+ "num-traits",
+ "paste",
+ "rand",
+ "rand_xoshiro",
+ "serde",
+ "serde_json",
+ "slog",
+ "slog-async",
+ "slog-json",
+ "slog-term",
+ "thiserror",
+]
+
+[[package]]
+name = "argmin-math"
+version = "0.2.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "75f2b0dada81340718682df780c9a696b090b6ef7e83c3dcc770af6de9302995"
+dependencies = [
+ "anyhow",
+ "cfg-if",
+ "num-complex",
+ "num-integer",
+ "num-traits",
+ "rand",
+ "thiserror",
+]
+
 [[package]]
 name = "async-trait"
 version = "0.1.82"
@@ -189,6 +238,25 @@ dependencies = [
  "serde",
 ]
 
+[[package]]
+name = "bincode"
+version = "2.0.0-rc.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f11ea1a0346b94ef188834a65c068a03aec181c94896d481d7a0a40d85b0ce95"
+dependencies = [
+ "bincode_derive",
+ "serde",
+]
+
+[[package]]
+name = "bincode_derive"
+version = "2.0.0-rc.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7e30759b3b99a1b802a7a3aa21c85c3ded5c28e1c83170d82d70f08bbf7f3e4c"
+dependencies = [
+ "virtue",
+]
+
 [[package]]
 name = "bit-set"
 version = "0.5.3"
@@ -288,6 +356,12 @@ dependencies = [
  "libc",
 ]
 
+[[package]]
+name = "crawdad"
+version = "0.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "87fbd1ecd2ed790e11c8fbe034f9b3e7687404818d1bdfd8218d26ec645ec7c5"
+
 [[package]]
 name = "crc32fast"
 version = "1.4.2"
@@ -297,6 +371,15 @@ dependencies = [
  "cfg-if",
 ]
 
+[[package]]
+name = "crossbeam-channel"
+version = "0.5.13"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "33480d6946193aa8033910124896ca395333cae7e2d1113d1fef6c3272217df2"
+dependencies = [
+ "crossbeam-utils",
+]
+
 [[package]]
 name = "crossbeam-deque"
 version = "0.8.5"
@@ -394,6 +477,15 @@ dependencies = [
  "syn 2.0.77",
 ]
 
+[[package]]
+name = "deranged"
+version = "0.3.11"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b42b6fa04a440b495c8b04d0e71b707c585f83cb9cb28cf8cd0d976c315e31b4"
+dependencies = [
+ "powerfmt",
+]
+
 [[package]]
 name = "derive_builder"
 version = "0.20.1"
@@ -435,6 +527,27 @@ dependencies = [
  "crypto-common",
 ]
 
+[[package]]
+name = "dirs-next"
+version = "2.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b98cf8ebf19c3d1b223e151f99a4f9f0690dca41414773390fc824184ac833e1"
+dependencies = [
+ "cfg-if",
+ "dirs-sys-next",
+]
+
+[[package]]
+name = "dirs-sys-next"
+version = "0.1.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4ebda144c4fe02d1f7ea1a7d9641b6fc6b580adcfa024ae48797ecdeb6825b4d"
+dependencies = [
+ "libc",
+ "redox_users",
+ "winapi",
+]
+
 [[package]]
 name = "dotenvy"
 version = "0.15.7"
@@ -709,6 +822,15 @@ dependencies = [
  "crunchy",
 ]
 
+[[package]]
+name = "hashbrown"
+version = "0.12.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8a9ee70c43aaf417c914396645a0fa852624801b24ebb7ae78fe8272889ac888"
+dependencies = [
+ "ahash",
+]
+
 [[package]]
 name = "hashbrown"
 version = "0.14.5"
@@ -727,6 +849,12 @@ version = "0.3.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d231dfb89cfffdbc30e7fc41579ed6066ad03abda9e567ccafae602b97ec5024"
 
+[[package]]
+name = "hermit-abi"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "fbf6a919d6cf397374f7dfeeea91d974c7c0a7221d0d0f4f20d859d329e53fcc"
+
 [[package]]
 name = "hound"
 version = "3.5.1"
@@ -844,7 +972,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "68b900aa2f7301e21c36462b170ee99994de34dff39a4a6a528e80e7376d07e5"
 dependencies = [
  "equivalent",
- "hashbrown",
+ "hashbrown 0.14.5",
  "serde",
 ]
 
@@ -876,6 +1004,17 @@ dependencies = [
  "cfg-if",
 ]
 
+[[package]]
+name = "is-terminal"
+version = "0.4.13"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "261f68e344040fbd0edea105bef17c66edf46f984ddb1115b775ce31be948f4b"
+dependencies = [
+ "hermit-abi 0.4.0",
+ "libc",
+ "windows-sys 0.52.0",
+]
+
 [[package]]
 name = "is_terminal_polyfill"
 version = "1.70.1"
@@ -950,7 +1089,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "fe30c65ff4c092320f1bba3418ac111443a4827a9155442f6a7d8d0e3707cb51"
 dependencies = [
  "aho-corasick",
- "bincode",
+ "bincode 1.3.3",
  "lindera-core",
  "lindera-tokenizer",
  "once_cell",
@@ -966,7 +1105,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c156a875d35ef6fedf31cb9d6bb3c562d16faad4506a5be27e2ed44357d755d4"
 dependencies = [
  "anyhow",
- "bincode",
+ "bincode 1.3.3",
  "byteorder",
  "jpreprocess-core",
  "lindera-core",
@@ -983,7 +1122,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "0cd89b119949a5071e6f49d805829f3dc17169eb7c6aab809e4f373c70098709"
 dependencies = [
  "anyhow",
- "bincode",
+ "bincode 1.3.3",
  "byteorder",
  "csv",
  "glob",
@@ -1103,7 +1242,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "0c28191456debc98af6aa5f7db77872471983e9fa2a737b1c232b6ef543aed62"
 dependencies = [
  "anyhow",
- "bincode",
+ "bincode 1.3.3",
  "byteorder",
  "encoding_rs",
  "log",
@@ -1131,7 +1270,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "bdf5f91725e32b9a21b1656baa7030766c9bafc4de4b4ddeb8ffdde7224dd2f6"
 dependencies = [
  "anyhow",
- "bincode",
+ "bincode 1.3.3",
  "byteorder",
  "lindera-cc-cedict-builder",
  "lindera-core",
@@ -1151,7 +1290,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e41f00ba7ac541b0ffd8c30e7a73f2dd197546cc5780462ec4f2e4782945a780"
 dependencies = [
  "anyhow",
- "bincode",
+ "bincode 1.3.3",
  "byteorder",
  "csv",
  "derive_builder",
@@ -1207,7 +1346,7 @@ version = "0.32.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "903e558981bcb6f59870aa7d6b4bcb09e8f7db778886a6a70f67fd74c9fa2ca3"
 dependencies = [
- "bincode",
+ "bincode 1.3.3",
  "lindera-core",
  "lindera-dictionary",
  "once_cell",
@@ -1323,7 +1462,7 @@ version = "1.0.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "80e04d1dcff3aae0704555fe5fee3bcfaf3d1fdf8a7e521d5b9d2b42acb52cec"
 dependencies = [
- "hermit-abi",
+ "hermit-abi 0.3.9",
  "libc",
  "wasi",
  "windows-sys 0.52.0",
@@ -1384,6 +1523,12 @@ dependencies = [
  "num-traits",
 ]
 
+[[package]]
+name = "num-conv"
+version = "0.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "51d515d32fb182ee37cda2ccdcb92950d6a3c2893aa280e540671c2cd0f3b1d9"
+
 [[package]]
 name = "num-integer"
 version = "0.1.46"
@@ -1408,7 +1553,7 @@ version = "1.16.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "4161fcb6d602d4d2081af7c3a45852d875a03dd337a6bfdd6e06407b61342a43"
 dependencies = [
- "hermit-abi",
+ "hermit-abi 0.3.9",
  "libc",
 ]
 
@@ -1609,6 +1754,12 @@ dependencies = [
  "portable-atomic",
 ]
 
+[[package]]
+name = "powerfmt"
+version = "0.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "439ee305def115ba05938db6eb1644ff94165c5ab5e9420d1c1bcedbba909391"
+
 [[package]]
 name = "ppv-lite86"
 version = "0.2.20"
@@ -1733,6 +1884,7 @@ dependencies = [
  "libc",
  "rand_chacha",
  "rand_core",
+ "serde",
 ]
 
 [[package]]
@@ -1752,6 +1904,17 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ec0be4795e2f6a28069bec0b5ff3e2ac9bafc99e6a9a7dc3547996c5c816922c"
 dependencies = [
  "getrandom",
+ "serde",
+]
+
+[[package]]
+name = "rand_xoshiro"
+version = "0.6.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6f97cdb2a36ed4183de61b2f824cc45c9f1037f28afe0a322e9fff4c108b5aaa"
+dependencies = [
+ "rand_core",
+ "serde",
 ]
 
 [[package]]
@@ -1800,6 +1963,17 @@ dependencies = [
  "bitflags 2.6.0",
 ]
 
+[[package]]
+name = "redox_users"
+version = "0.4.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ba009ff324d1fc1b900bd1fdb31564febe58a8ccc8a6fdbb93b543d33b13ca43"
+dependencies = [
+ "getrandom",
+ "libredox",
+ "thiserror",
+]
+
 [[package]]
 name = "regex"
 version = "1.11.0"
@@ -1844,6 +2018,19 @@ dependencies = [
  "windows-sys 0.52.0",
 ]
 
+[[package]]
+name = "rucrf"
+version = "0.3.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "640271497e95c3a3a9502740187b5fc3a19485cad172e7be9a2fd8d86ffc1c28"
+dependencies = [
+ "argmin",
+ "argmin-math",
+ "bincode 2.0.0-rc.3",
+ "crossbeam-channel",
+ "hashbrown 0.12.3",
+]
+
 [[package]]
 name = "rustc-demangle"
 version = "0.1.24"
@@ -1952,6 +2139,7 @@ dependencies = [
  "tar",
  "thiserror",
  "tokenizers",
+ "vibrato",
  "zstd",
 ]
 
@@ -2059,6 +2247,49 @@ version = "0.3.11"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "38b58827f4464d87d377d175e90bf58eb00fd8716ff0a62f80356b5e61555d0d"
 
+[[package]]
+name = "slog"
+version = "2.7.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8347046d4ebd943127157b94d63abb990fcf729dc4e9978927fdf4ac3c998d06"
+
+[[package]]
+name = "slog-async"
+version = "2.8.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "72c8038f898a2c79507940990f05386455b3a317d8f18d4caea7cbc3d5096b84"
+dependencies = [
+ "crossbeam-channel",
+ "slog",
+ "take_mut",
+ "thread_local",
+]
+
+[[package]]
+name = "slog-json"
+version = "2.6.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3e1e53f61af1e3c8b852eef0a9dee29008f55d6dd63794f3f12cef786cf0f219"
+dependencies = [
+ "serde",
+ "serde_json",
+ "slog",
+ "time",
+]
+
+[[package]]
+name = "slog-term"
+version = "2.9.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b6e022d0b998abfe5c3782c1f03551a596269450ccd677ea51c56f8b214610e8"
+dependencies = [
+ "is-terminal",
+ "slog",
+ "term",
+ "thread_local",
+ "time",
+]
+
 [[package]]
 name = "smallvec"
 version = "1.13.2"
@@ -2171,6 +2402,12 @@ version = "1.0.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "a7065abeca94b6a8a577f9bd45aa0867a2238b74e8eb67cf10d492bc39351394"
 
+[[package]]
+name = "take_mut"
+version = "0.2.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f764005d11ee5f36500a149ace24e00e3da98b0158b3e2d53a7495660d3f4d60"
+
 [[package]]
 name = "tar"
 version = "0.4.42"
@@ -2188,6 +2425,17 @@ version = "0.12.16"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "61c41af27dd6d1e27b1b16b489db798443478cef1f06a660c96db617ba5de3b1"
 
+[[package]]
+name = "term"
+version = "0.7.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c59df8ac95d96ff9bede18eb7300b0fda5e5d8d90960e76f8e14ae765eedbf1f"
+dependencies = [
+ "dirs-next",
+ "rustversion",
+ "winapi",
+]
+
 [[package]]
 name = "thiserror"
 version = "1.0.64"
@@ -2208,6 +2456,47 @@ dependencies = [
  "syn 2.0.77",
 ]
 
+[[package]]
+name = "thread_local"
+version = "1.1.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8b9ef9bad013ada3808854ceac7b46812a6465ba368859a37e2100283d2d719c"
+dependencies = [
+ "cfg-if",
+ "once_cell",
+]
+
+[[package]]
+name = "time"
+version = "0.3.36"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5dfd88e563464686c916c7e46e623e520ddc6d79fa6641390f2e3fa86e83e885"
+dependencies = [
+ "deranged",
+ "itoa",
+ "num-conv",
+ "powerfmt",
+ "serde",
+ "time-core",
+ "time-macros",
+]
+
+[[package]]
+name = "time-core"
+version = "0.1.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ef927ca75afb808a4d64dd374f00a2adf8d0fcff8e7b184af886c3c87ec4a3f3"
+
+[[package]]
+name = "time-macros"
+version = "0.2.18"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3f252a68540fde3a3877aeea552b832b40ab9a69e318efd078774a01ddee1ccf"
+dependencies = [
+ "num-conv",
+ "time-core",
+]
+
 [[package]]
 name = "tinyvec"
 version = "1.8.0"
@@ -2490,6 +2779,26 @@ version = "0.9.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "0b928f33d975fc6ad9f86c8f283853ad26bdd5b10b7f1542aa2fa15e2289105a"
 
+[[package]]
+name = "vibrato"
+version = "0.5.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "df95d99b268877738d8f644c38604c4c9c09950219b1d1a725ada94d62e98722"
+dependencies = [
+ "bincode 2.0.0-rc.3",
+ "crawdad",
+ "csv-core",
+ "hashbrown 0.12.3",
+ "regex",
+ "rucrf",
+]
+
+[[package]]
+name = "virtue"
+version = "0.0.13"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9dcc60c0624df774c82a0ef104151231d37da4962957d691c011c852b2473314"
+
 [[package]]
 name = "wasi"
 version = "0.11.0+wasi-snapshot-preview1"
diff --git a/sbv2_core/Cargo.toml b/sbv2_core/Cargo.toml
index 209470d..312e885 100644
--- a/sbv2_core/Cargo.toml
+++ b/sbv2_core/Cargo.toml
@@ -24,6 +24,7 @@ serde_json = "1.0.128"
 tar = "0.4.41"
 thiserror = "1.0.63"
 tokenizers = { version = "0.20.0", default-features = false }
+vibrato = { version = "0.5.1", optional = true }
 zstd = "0.13.2"
 
 [features]
@@ -35,4 +36,5 @@ directml = ["ort/directml", "std"]
 tensorrt = ["ort/tensorrt", "std"]
 coreml = ["ort/coreml", "std"]
 default = ["std"]
-no_std = ["tokenizers/unstable_wasm"]
\ No newline at end of file
+no_std = ["tokenizers/unstable_wasm"]
+mecab = ["vibrato"]