Add the FCPE pitch model (fcpe/fcpe_c_v001.pt from torchfcpe 0.0.4)

The model torchfcpe bundles, copied unchanged (SHA-256 b9aeaeb6…0015), with its MIT licence; manifest.json and README.md list it. rvc-next downloads it as the fcpe asset.

README.md

@@ -14,9 +14,10 @@ RVC demo voices.
 
 Everything here is copied unchanged from the official RVC repository,
 [lj1995/VoiceConversionWebUI](https://huggingface.co/lj1995/VoiceConversionWebUI) (revision
-`e6d0c1a`). The demo voices come from inside its distribution packages (`RVC*.7z`), where they
-are the only copies. `manifest.json` lists every file with its size, SHA-256 and where it came
-from.
+`e6d0c1a`), except the FCPE pitch model, copied unchanged from the
+[torchfcpe](https://github.com/CNChTu/FCPE) 0.0.4 package, which bundles it. The demo voices come
+from inside RVC's distribution packages (`RVC*.7z`), where they are the only copies.
+`manifest.json` lists every file with its size, SHA-256 and where it came from.
 
 ## Contents
 
@@ -24,6 +25,7 @@ from.
 | --- | --- | --- | --- |
 | `hubert/hubert_base/` | `config.json`, `preprocessor_config.json`, `pytorch_model.bin` | Content features (HuBERT/ContentVec), for conversion and training | `hubert_base/` |
 | `rmvpe/` | `rmvpe.pt`, `rmvpe.onnx` | Pitch extraction (RMVPE); the ONNX export for DirectML | `rmvpe.pt`, `rmvpe.onnx` |
+| `fcpe/` | `fcpe_c_v001.pt`, `LICENSE-FCPE.txt` | Pitch extraction (FCPE) | `torchfcpe/assets/fcpe_c_v001.pt` in torchfcpe 0.0.4 |
 | `pretrained/v1/` | `{f0,}{G,D}{32k,40k,48k}.pth` | Base models for training v1 voices, with (`f0`) and without pitch guidance | `pretrained/` |
 | `pretrained/v2/` | the same twelve files | Base models for training v2 voices | `pretrained_v2/` |
 | `separation/` | five BS-/Mel-Roformer checkpoints and their YAML | Vocal separation, dereverb and karaoke (PyMSS) | `pymss_weights/` |
@@ -50,3 +52,6 @@ software is for research use only, and users bear full responsibility for the vo
 and distribute; anyone who does not accept this may not use these files. The licences of the
 components the models build on (ContentVec, VITS, HiFi-GAN, UVR, audio-slicer) are listed in the
 same file.
+
+The FCPE model (`fcpe/`) is not part of RVC: it is MIT-licensed by its authors (Copyright (c) 2023
+CN_ChiTu), without the research-use clause; its licence is `fcpe/LICENSE-FCPE.txt`.

fcpe/LICENSE-FCPE.txt

@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2023 CN_ChiTu
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

fcpe/fcpe_c_v001.pt

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:b9aeaeb673436eeda50ceafd632aa681aa63417e52eae4207503d180c9b10015
+size 43363260

manifest.json

@@ -294,6 +294,16 @@
         "path": "rmvpe.pt"
       }
     },
+    {
+      "path": "fcpe/fcpe_c_v001.pt",
+      "category": "fcpe",
+      "size": 43363260,
+      "sha256": "b9aeaeb673436eeda50ceafd632aa681aa63417e52eae4207503d180c9b10015",
+      "origin": {
+        "repository": "pypi:torchfcpe==0.0.4",
+        "path": "torchfcpe/assets/fcpe_c_v001.pt"
+      }
+    },
     {
       "path": "separation/config_mel_band_roformer_karaoke.yaml",
       "category": "separation",