release v0.2.0-alpha7

.github/dependabot.yml

@@ -9,7 +9,3 @@ updates:
     directory: "/" # Location of package manifests
     schedule:
       interval: "weekly"
-  - package-ecosystem: "npm" # See documentation for possible values
-    directory: "/" # Location of package manifests
-    schedule:
-      interval: "weekly"

.gitignore

@@ -1,10 +1,10 @@
 target/
 models/
 !models/.gitkeep
-venv/
+.venv/
 .env
 *.wav
 node_modules/
 dist/
 *.csv
-*.bin
+*.bin

Cargo.lock

@@ -92,9 +92,9 @@ dependencies = [
 
 [[package]]
 name = "anyhow"
-version = "1.0.99"
+version = "1.0.98"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b0674a1ddeecb70197781e945de4b3b8ffb61fa939a5597bcf48503737663100"
+checksum = "e16d2d3311acee920a9eb8d33b8cbc1787ce4a264e85f964c2404b969bdcd487"
 
 [[package]]
 name = "atomic-waker"
@@ -871,9 +871,9 @@ checksum = "2304e00983f87ffb38b55b444b5e3b60a884b5d30c0fca7d82fe33449bbe55ea"
 
 [[package]]
 name = "hermit-abi"
-version = "0.5.1"
+version = "0.3.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f154ce46856750ed433c8649605bf7ed2de3bc35fd9d2a9f30cddd873c80cb08"
+checksum = "d231dfb89cfffdbc30e7fc41579ed6066ad03abda9e567ccafae602b97ec5024"
 
 [[package]]
 name = "hound"
@@ -995,7 +995,7 @@ dependencies = [
  "hyper",
  "libc",
  "pin-project-lite",
- "socket2 0.5.9",
+ "socket2",
  "tokio",
  "tower-service",
  "tracing",
@@ -1412,7 +1412,7 @@ dependencies = [
  "reqwest",
  "serde",
  "tar",
- "thiserror 2.0.15",
+ "thiserror 2.0.12",
  "yada",
 ]
 
@@ -1636,9 +1636,9 @@ dependencies = [
 
 [[package]]
 name = "num_cpus"
-version = "1.17.0"
+version = "1.16.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "91df4bbde75afed763b708b7eee1e8e7651e02d97f6d5dd763e89367e957b23b"
+checksum = "4161fcb6d602d4d2081af7c3a45852d875a03dd337a6bfdd6e06407b61342a43"
 dependencies = [
  "hermit-abi",
  "libc",
@@ -1740,7 +1740,7 @@ checksum = "04744f49eae99ab78e0d5c0b603ab218f515ea8cfe5a456d7629ad883a3b6e7d"
 [[package]]
 name = "ort"
 version = "2.0.0-rc.10"
-source = "git+https://github.com/pykeio/ort.git#d269461e2130b407589feff404025df25faeb3bb"
+source = "git+https://github.com/pykeio/ort.git#1e6f7ee1c8b056b00d280167ba172c96e78fcd1c"
 dependencies = [
  "libloading",
  "ndarray",
@@ -1752,7 +1752,7 @@ dependencies = [
 [[package]]
 name = "ort-sys"
 version = "2.0.0-rc.10"
-source = "git+https://github.com/pykeio/ort.git#d269461e2130b407589feff404025df25faeb3bb"
+source = "git+https://github.com/pykeio/ort.git#1e6f7ee1c8b056b00d280167ba172c96e78fcd1c"
 dependencies = [
  "flate2",
  "pkg-config",
@@ -1812,7 +1812,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "198db74531d58c70a361c42201efde7e2591e976d518caf7662a47dc5720e7b6"
 dependencies = [
  "memchr",
- "thiserror 2.0.15",
+ "thiserror 2.0.12",
  "ucd-trie",
 ]
 
@@ -2141,7 +2141,7 @@ checksum = "dd6f9d3d47bdd2ad6945c5015a226ec6155d0bcdfd8f7cd29f86b71f8de99d2b"
 dependencies = [
  "getrandom 0.2.16",
  "libredox",
- "thiserror 2.0.15",
+ "thiserror 2.0.12",
 ]
 
 [[package]]
@@ -2308,7 +2308,7 @@ checksum = "28d3b2b1366ec20994f1fd18c3c594f05c5dd4bc44d8bb0c1c632c8d6829481f"
 
 [[package]]
 name = "sbv2_api"
-version = "0.2.0-alpha6"
+version = "0.2.0-alpha7"
 dependencies = [
  "anyhow",
  "axum",
@@ -2324,7 +2324,7 @@ dependencies = [
 
 [[package]]
 name = "sbv2_bindings"
-version = "0.2.0-alpha6"
+version = "0.2.0-alpha7"
 dependencies = [
  "anyhow",
  "ndarray",
@@ -2334,7 +2334,7 @@ dependencies = [
 
 [[package]]
 name = "sbv2_core"
-version = "0.2.0-alpha6"
+version = "0.2.0-alpha7"
 dependencies = [
  "anyhow",
  "base64 0.22.1",
@@ -2352,7 +2352,7 @@ dependencies = [
  "serde",
  "serde_json",
  "tar",
- "thiserror 2.0.15",
+ "thiserror 2.0.12",
  "tokenizers",
  "ureq",
  "zstd",
@@ -2360,7 +2360,7 @@ dependencies = [
 
 [[package]]
 name = "sbv2_wasm"
-version = "0.2.0-alpha6"
+version = "0.2.0-alpha7"
 dependencies = [
  "js-sys",
  "ndarray",
@@ -2430,9 +2430,9 @@ dependencies = [
 
 [[package]]
 name = "serde_json"
-version = "1.0.142"
+version = "1.0.140"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "030fedb782600dcbd6f02d479bf0d817ac3bb40d644745b769d6a96bc3afc5a7"
+checksum = "20068b6e96dc6c9bd23e01df8827e6c7e1f2fddd43c21810382803c136b99373"
 dependencies = [
  "itoa",
  "memchr",
@@ -2538,16 +2538,6 @@ dependencies = [
  "windows-sys 0.52.0",
 ]
 
-[[package]]
-name = "socket2"
-version = "0.6.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "233504af464074f9d066d7b5416c5f9b894a5862a6506e306f7b816cdd6f1807"
-dependencies = [
- "libc",
- "windows-sys 0.59.0",
-]
-
 [[package]]
 name = "socks"
 version = "0.3.4"
@@ -2710,11 +2700,11 @@ dependencies = [
 
 [[package]]
 name = "thiserror"
-version = "2.0.15"
+version = "2.0.12"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "80d76d3f064b981389ecb4b6b7f45a0bf9fdac1d5b9204c7bd6714fecc302850"
+checksum = "567b8a2dae586314f7be2a752ec7474332959c6460e02bde30d702a66d488708"
 dependencies = [
- "thiserror-impl 2.0.15",
+ "thiserror-impl 2.0.12",
 ]
 
 [[package]]
@@ -2730,9 +2720,9 @@ dependencies = [
 
 [[package]]
 name = "thiserror-impl"
-version = "2.0.15"
+version = "2.0.12"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "44d29feb33e986b6ea906bd9c3559a856983f92371b3eaa5e83782a351623de0"
+checksum = "7f7cf42b4507d8ea322120659672cf1b9dbb93f8f2d4ecfd6e51350ff5b17a1d"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -2766,9 +2756,9 @@ checksum = "1f3ccbac311fea05f86f61904b462b55fb3df8837a366dfc601a0161d0532f20"
 
 [[package]]
 name = "tokenizers"
-version = "0.21.4"
+version = "0.21.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a620b996116a59e184c2fa2dfd8251ea34a36d0a514758c6f966386bd2e03476"
+checksum = "4c3846d8588abed0daba25a0e47edd58ea15e450a6088b2575f5116fdb0b27ca"
 dependencies = [
  "ahash",
  "aho-corasick",
@@ -2793,7 +2783,7 @@ dependencies = [
  "serde",
  "serde_json",
  "spm_precompiled",
- "thiserror 2.0.15",
+ "thiserror 2.0.12",
  "unicode-normalization-alignments",
  "unicode-segmentation",
  "unicode_categories",
@@ -2801,9 +2791,9 @@ dependencies = [
 
 [[package]]
 name = "tokio"
-version = "1.47.1"
+version = "1.46.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "89e49afdadebb872d3145a5638b59eb0691ea23e46ca484037cfab3b76b95038"
+checksum = "0cc3a2344dafbe23a245241fe8b09735b521110d30fcefbbd5feb1797ca35d17"
 dependencies = [
  "backtrace",
  "bytes",
@@ -2814,9 +2804,9 @@ dependencies = [
  "pin-project-lite",
  "signal-hook-registry",
  "slab",
- "socket2 0.6.0",
+ "socket2",
  "tokio-macros",
- "windows-sys 0.59.0",
+ "windows-sys 0.52.0",
 ]
 
 [[package]]
@@ -2997,9 +2987,9 @@ checksum = "8ecb6da28b8a351d773b68d5825ac39017e680750f980f3a1a85cd8dd28a47c1"
 
 [[package]]
 name = "ureq"
-version = "3.1.0"
+version = "3.0.12"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "00432f493971db5d8e47a65aeb3b02f8226b9b11f1450ff86bb772776ebadd70"
+checksum = "9f0fde9bc91026e381155f8c67cb354bcd35260b2f4a29bcc84639f762760c39"
 dependencies = [
  "base64 0.22.1",
  "der",
@@ -3013,15 +3003,15 @@ dependencies = [
  "socks",
  "ureq-proto",
  "utf-8",
- "webpki-root-certs",
+ "webpki-root-certs 0.26.11",
- "webpki-roots",
+ "webpki-roots 0.26.11",
 ]
 
 [[package]]
 name = "ureq-proto"
-version = "0.5.0"
+version = "0.4.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c5b6cabebbecc4c45189ab06b52f956206cea7d8c8a20851c35a85cb169224cc"
+checksum = "59db78ad1923f2b1be62b6da81fe80b173605ca0d57f85da2e005382adf693f7"
 dependencies = [
  "base64 0.22.1",
  "http",
@@ -3221,6 +3211,15 @@ dependencies = [
  "wasm-bindgen",
 ]
 
+[[package]]
+name = "webpki-root-certs"
+version = "0.26.11"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "75c7f0ef91146ebfb530314f5f1d24528d7f0767efbfd31dce919275413e393e"
+dependencies = [
+ "webpki-root-certs 1.0.0",
+]
+
 [[package]]
 name = "webpki-root-certs"
 version = "1.0.0"
@@ -3230,6 +3229,15 @@ dependencies = [
  "rustls-pki-types",
 ]
 
+[[package]]
+name = "webpki-roots"
+version = "0.26.11"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "521bc38abb08001b01866da9f51eb7c5d647a19260e00054a8c7fd5f9e57f7a9"
+dependencies = [
+ "webpki-roots 1.0.0",
+]
+
 [[package]]
 name = "webpki-roots"
 version = "1.0.0"

Cargo.toml

@@ -3,7 +3,7 @@ resolver = "3"
 members = ["./crates/sbv2_api", "./crates/sbv2_core", "./crates/sbv2_bindings", "./crates/sbv2_wasm"]
 
 [workspace.package]
-version = "0.2.0-alpha6"
+version = "0.2.0-alpha7"
 edition = "2021"
 description = "Style-Bert-VITSの推論ライブラリ"
 license = "MIT"
@@ -12,7 +12,7 @@ repository = "https://github.com/neodyland/sbv2-api"
 documentation = "https://docs.rs/sbv2_core"
 
 [workspace.dependencies]
-anyhow = "1.0.99"
+anyhow = "1.0.96"
 dotenvy = "0.15.7"
 env_logger = "0.11.6"
 ndarray = "0.16.1"

crates/sbv2_api/Cargo.toml

@@ -16,7 +16,7 @@ env_logger.workspace = true
 log = "0.4.22"
 sbv2_core = { version = "0.2.0-alpha6", path = "../sbv2_core", features = ["aivmx"] }
 serde = { version = "1.0.210", features = ["derive"] }
-tokio = { version = "1.47.1", features = ["full"] }
+tokio = { version = "1.46.1", features = ["full"] }
 utoipa = { version = "5.4.0", features = ["axum_extras"] }
 utoipa-scalar = { version = "0.3.0", features = ["axum"] }
 

crates/sbv2_core/Cargo.toml

@@ -17,15 +17,15 @@ hound = "3.5.1"
 jpreprocess = { version = "0.12.0", features = ["naist-jdic"] }
 ndarray.workspace = true
 npyz = { version = "0.8.4", optional = true }
-num_cpus = "1.17.0"
+num_cpus = "1.16.0"
 once_cell.workspace = true
-ort = { git = "https://github.com/pykeio/ort.git", version = "2.0.0-rc.9", optional = true }
+ort = { git = "https://github.com/pykeio/ort.git", version = "2.0.0-rc.10", optional = true }
 regex = "1.10.6"
 serde = { version = "1.0.210", features = ["derive"] }
-serde_json = "1.0.142"
+serde_json = "1.0.128"
 tar = "0.4.41"
-thiserror = "2.0.15"
+thiserror = "2.0.11"
-tokenizers = { version = "0.21.4", default-features = false }
+tokenizers = { version = "0.21.2", default-features = false }
 zstd = "0.13.2"
 
 [features]
@@ -44,4 +44,4 @@ base64 = ["dep:base64"]
 
 [build-dependencies]
 dirs = "6.0.0"
-ureq = "3.1.0"
+ureq = "3.0.12"

crates/sbv2_core/src/jtalk.rs

@@ -1,175 +1,3 @@
-/*
-このファイルのコードは
-https://github.com/litagin02/Style-Bert-VITS2/blob/master/style_bert_vits2/nlp/japanese/g2p.py
-を参考にRustに書き換えています。
-
-以下はライセンスです。
-                   GNU LESSER GENERAL PUBLIC LICENSE
-                       Version 3, 29 June 2007
-
- Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
- Everyone is permitted to copy and distribute verbatim copies
- of this license document, but changing it is not allowed.
-
-
-  This version of the GNU Lesser General Public License incorporates
-the terms and conditions of version 3 of the GNU General Public
-License, supplemented by the additional permissions listed below.
-
-  0. Additional Definitions.
-
-  As used herein, "this License" refers to version 3 of the GNU Lesser
-General Public License, and the "GNU GPL" refers to version 3 of the GNU
-General Public License.
-
-  "The Library" refers to a covered work governed by this License,
-other than an Application or a Combined Work as defined below.
-
-  An "Application" is any work that makes use of an interface provided
-by the Library, but which is not otherwise based on the Library.
-Defining a subclass of a class defined by the Library is deemed a mode
-of using an interface provided by the Library.
-
-  A "Combined Work" is a work produced by combining or linking an
-Application with the Library.  The particular version of the Library
-with which the Combined Work was made is also called the "Linked
-Version".
-
-  The "Minimal Corresponding Source" for a Combined Work means the
-Corresponding Source for the Combined Work, excluding any source code
-for portions of the Combined Work that, considered in isolation, are
-based on the Application, and not on the Linked Version.
-
-  The "Corresponding Application Code" for a Combined Work means the
-object code and/or source code for the Application, including any data
-and utility programs needed for reproducing the Combined Work from the
-Application, but excluding the System Libraries of the Combined Work.
-
-  1. Exception to Section 3 of the GNU GPL.
-
-  You may convey a covered work under sections 3 and 4 of this License
-without being bound by section 3 of the GNU GPL.
-
-  2. Conveying Modified Versions.
-
-  If you modify a copy of the Library, and, in your modifications, a
-facility refers to a function or data to be supplied by an Application
-that uses the facility (other than as an argument passed when the
-facility is invoked), then you may convey a copy of the modified
-version:
-
-   a) under this License, provided that you make a good faith effort to
-   ensure that, in the event an Application does not supply the
-   function or data, the facility still operates, and performs
-   whatever part of its purpose remains meaningful, or
-
-   b) under the GNU GPL, with none of the additional permissions of
-   this License applicable to that copy.
-
-  3. Object Code Incorporating Material from Library Header Files.
-
-  The object code form of an Application may incorporate material from
-a header file that is part of the Library.  You may convey such object
-code under terms of your choice, provided that, if the incorporated
-material is not limited to numerical parameters, data structure
-layouts and accessors, or small macros, inline functions and templates
-(ten or fewer lines in length), you do both of the following:
-
-   a) Give prominent notice with each copy of the object code that the
-   Library is used in it and that the Library and its use are
-   covered by this License.
-
-   b) Accompany the object code with a copy of the GNU GPL and this license
-   document.
-
-  4. Combined Works.
-
-  You may convey a Combined Work under terms of your choice that,
-taken together, effectively do not restrict modification of the
-portions of the Library contained in the Combined Work and reverse
-engineering for debugging such modifications, if you also do each of
-the following:
-
-   a) Give prominent notice with each copy of the Combined Work that
-   the Library is used in it and that the Library and its use are
-   covered by this License.
-
-   b) Accompany the Combined Work with a copy of the GNU GPL and this license
-   document.
-
-   c) For a Combined Work that displays copyright notices during
-   execution, include the copyright notice for the Library among
-   these notices, as well as a reference directing the user to the
-   copies of the GNU GPL and this license document.
-
-   d) Do one of the following:
-
-       0) Convey the Minimal Corresponding Source under the terms of this
-       License, and the Corresponding Application Code in a form
-       suitable for, and under terms that permit, the user to
-       recombine or relink the Application with a modified version of
-       the Linked Version to produce a modified Combined Work, in the
-       manner specified by section 6 of the GNU GPL for conveying
-       Corresponding Source.
-
-       1) Use a suitable shared library mechanism for linking with the
-       Library.  A suitable mechanism is one that (a) uses at run time
-       a copy of the Library already present on the user's computer
-       system, and (b) will operate properly with a modified version
-       of the Library that is interface-compatible with the Linked
-       Version.
-
-   e) Provide Installation Information, but only if you would otherwise
-   be required to provide such information under section 6 of the
-   GNU GPL, and only to the extent that such information is
-   necessary to install and execute a modified version of the
-   Combined Work produced by recombining or relinking the
-   Application with a modified version of the Linked Version. (If
-   you use option 4d0, the Installation Information must accompany
-   the Minimal Corresponding Source and Corresponding Application
-   Code. If you use option 4d1, you must provide the Installation
-   Information in the manner specified by section 6 of the GNU GPL
-   for conveying Corresponding Source.)
-
-  5. Combined Libraries.
-
-  You may place library facilities that are a work based on the
-Library side by side in a single library together with other library
-facilities that are not Applications and are not covered by this
-License, and convey such a combined library under terms of your
-choice, if you do both of the following:
-
-   a) Accompany the combined library with a copy of the same work based
-   on the Library, uncombined with any other library facilities,
-   conveyed under the terms of this License.
-
-   b) Give prominent notice with the combined library that part of it
-   is a work based on the Library, and explaining where to find the
-   accompanying uncombined form of the same work.
-
-  6. Revised Versions of the GNU Lesser General Public License.
-
-  The Free Software Foundation may publish revised and/or new versions
-of the GNU Lesser General Public License from time to time. Such new
-versions will be similar in spirit to the present version, but may
-differ in detail to address new problems or concerns.
-
-  Each version is given a distinguishing version number. If the
-Library as you received it specifies that a certain numbered version
-of the GNU Lesser General Public License "or any later version"
-applies to it, you have the option of following the terms and
-conditions either of that published version or of any later version
-published by the Free Software Foundation. If the Library as you
-received it does not specify a version number of the GNU Lesser
-General Public License, you may choose any version of the GNU Lesser
-General Public License ever published by the Free Software Foundation.
-
-  If the Library as you received it specifies that a proxy can decide
-whether future versions of the GNU Lesser General Public License shall
-apply, that proxy's public statement of acceptance of any version is
-permanent authorization for you to choose that version for the
-Library.
-*/
 use crate::error::{Error, Result};
 use crate::mora::{CONSONANTS, MORA_KATA_TO_MORA_PHONEMES, MORA_PHONEMES_TO_MORA_KATA, VOWELS};
 use crate::norm::{replace_punctuation, PUNCTUATIONS};
@@ -299,20 +127,20 @@ impl JTalkProcess {
             Ok(phone_tone_list)
         } else if tone_values.len() == 2 {
             if tone_values == hash_set![0, 1] {
-                Ok(phone_tone_list)
+                return Ok(phone_tone_list);
             } else if tone_values == hash_set![-1, 0] {
-                Ok(phone_tone_list
+                return Ok(phone_tone_list
                     .iter()
                     .map(|x| {
                         let new_tone = if x.1 == -1 { 0 } else { 1 };
                         (x.0.clone(), new_tone)
                     })
-                    .collect())
+                    .collect());
             } else {
-                Err(Error::ValueError("Invalid tone values 0".to_string()))
+                return Err(Error::ValueError("Invalid tone values 0".to_string()));
             }
         } else {
-            Err(Error::ValueError("Invalid tone values 1".to_string()))
+            return Err(Error::ValueError("Invalid tone values 1".to_string()));
         }
     }
 

crates/sbv2_core/src/tts.rs

@@ -240,43 +240,39 @@ impl TTSModelHolder {
     }
     fn find_and_load_model<I: Into<TTSIdent>>(&mut self, ident: I) -> Result<bool> {
         let ident = ident.into();
-        // Locate target model entry
+        let (bytes, style_vectors) = {
-        let target_index = self
+            let model = self
-            .models
+                .models
-            .iter()
+                .iter()
-            .position(|m| m.ident == ident)
+                .find(|m| m.ident == ident)
-            .ok_or(Error::ModelNotFoundError(ident.to_string()))?;
+                .ok_or(Error::ModelNotFoundError(ident.to_string()))?;
-
+            if model.vits2.is_some() {
-        // Already loaded
+                return Ok(true);
-        if self.models[target_index].vits2.is_some() {
+            }
-            return Ok(true);
+            (model.bytes.clone().unwrap(), model.style_vectors.clone())
-        }
+        };
-
+        self.unload(ident.clone());
-        // Get bytes to build a Session
+        let s = model::load_model(&bytes, false)?;
-        let bytes = self.models[target_index]
-            .bytes
-            .clone()
-            .ok_or(Error::ModelNotFoundError(ident.to_string()))?;
-
-        // Enforce max loaded models by evicting a different loaded model's session, not removing the entry
         if let Some(max) = self.max_loaded_models {
-            let loaded_count = self.models.iter().filter(|m| m.vits2.is_some()).count();
+            if self.models.iter().filter(|x| x.vits2.is_some()).count() >= max {
-            if loaded_count >= max {
+                self.unload(self.models.first().unwrap().ident.clone());
-                if let Some(evict_index) = self
-                    .models
-                    .iter()
-                    .position(|m| m.vits2.is_some() && m.ident != ident)
-                {
-                    // Drop only the session to free memory; keep bytes/style for future reload
-                    self.models[evict_index].vits2 = None;
-                }
             }
         }
-
+        self.models.push(TTSModel {
-        // Build and set session in-place for the target model
+            bytes: Some(bytes.to_vec()),
-        let s = model::load_model(&bytes, false)?;
+            vits2: Some(s),
-        self.models[target_index].vits2 = Some(s);
+            style_vectors,
-        Ok(true)
+            ident: ident.clone(),
+        });
+        let model = self
+            .models
+            .iter()
+            .find(|m| m.ident == ident)
+            .ok_or(Error::ModelNotFoundError(ident.to_string()))?;
+        if model.vits2.is_some() {
+            return Ok(true);
+        }
+        Err(Error::ModelNotFoundError(ident.to_string()))
     }
 
     /// Get style vector by style id and weight

crates/sbv2_core/src/tts_util.rs

@@ -173,15 +173,8 @@ pub fn parse_text_blocking(
 }
 
 pub fn array_to_vec(audio_array: Array3<f32>) -> Result<Vec<u8>> {
-    // If SBV2_FORCE_STEREO is set ("1"/"true"), duplicate mono to stereo
-    let force_stereo = std::env::var("SBV2_FORCE_STEREO")
-        .ok()
-        .map(|v| matches!(v.as_str(), "1" | "true" | "TRUE" | "True"))
-        .unwrap_or(false);
-
-    let channels: u16 = if force_stereo { 2 } else { 1 };
     let spec = WavSpec {
-        channels,
+        channels: 1,
         sample_rate: 44100,
         bits_per_sample: 32,
         sample_format: SampleFormat::Float,
@@ -190,16 +183,8 @@ pub fn array_to_vec(audio_array: Array3<f32>) -> Result<Vec<u8>> {
     let mut writer = WavWriter::new(&mut cursor, spec)?;
     for i in 0..audio_array.shape()[0] {
         let output = audio_array.slice(s![i, 0, ..]).to_vec();
-        if force_stereo {
+        for sample in output {
-            for sample in output {
+            writer.write_sample(sample)?;
-                // Write to Left and Right channels
-                writer.write_sample(sample)?;
-                writer.write_sample(sample)?;
-            }
-        } else {
-            for sample in output {
-                writer.write_sample(sample)?;
-            }
         }
     }
     writer.finalize()?;